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2t5hks | Does the spin of the earth have any significant effect on the time it takes to complete a trans-pacific flight vs a trans-atlantic flight? | The Earth spins west towards the east. This [GIF](_URL_0_) helps visualize it.
Assume that its the same model of plane, travelling at the same altitude and speed, with the same mass, same weather conditions, same distance
Its ~7500 km from Toronto to Moscow, and Vancouver to Tokyo (google).
Would the rotation of the... | askscience | {
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"Nope, the plane is in the rotating reference frame.\nBut, it actually does because the coriolis force contributes to atmospheric winds, among them the jet stream which runs in one direction only ... | {
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} | Does the spin of the earth have any significant effect on the time it takes to complete a trans-pacific flight vs a trans-atlantic flight?
The Earth spins west towards the east. This [GIF](_URL_0_) helps visualize it. Assume that its the same model of plane, travelling at the same altitude and speed, with the same mass... | [
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5u4tlp | What would the evolutionary benefits be for male mammals' testicles being located in such a vulnerable location instead of being inside the body? | Being such an important organ (perhaps most important, considering an animal's ultimate goal in life is reproduction) what would/could be the reasons why mammals have not evolved in parallel to have testicles located in a much safer location inside the body rather than exposed in the way they are? I just noticed the o... | askscience | {
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} | What would the evolutionary benefits be for male mammals' testicles being located in such a vulnerable location instead of being inside the body?
Being such an important organ (perhaps most important, considering an animal's ultimate goal in life is reproduction) what would/could be the reasons why mammals have not evo... | [
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1jkcy3 | Why do resistor values need to be color-coded, unlike capacitors wherein the capacitance is already printed on it? | Wouldn't it be much more easier if the values are already printed on the resistor itself? | askscience | {
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"Well, they are for surface mount resistors: _URL_0_\n\nFrom [wikipedia](_UR... | {
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"http://www.resistorguide.com/resistor-smd-code/",
"http://www.expo21xx.com/automation21xx/345_st3_scara-robot/2.jpg",
"http://www.tpub.com/neets/book2/32VS0004.GIF",
"https:... | Why do resistor values need to be color-coded, unlike capacitors wherein the capacitance is already printed on it?
Wouldn't it be much more easier if the values are already printed on the resistor itself? | [
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23e3el | Spacetime can be streched and bend. But can it vibrate? If so, does it has resonance frequency? | askscience | {
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"> Can it vibrate?\n\nVibrations of spacetime are called gravitational waves. They have been detected indirectly by observing the orbits of binary neutron stars: The orbits lose energy as the stars emit the waves. \n\nThere is no resonan... | {
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} | Spacetime can be streched and bend. But can it vibrate? If so, does it has resonance frequency?
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wfv4a | Is their a psychological or physical benefit to tennis players who "moan", "groan" or scream every time they hit the ball? | I was visiting my grandma the other day. While watching tennis I noted how some players "moan","groan", or scream with every hit they give. It annoyed me terribly so I asked my grandma (who watches a lot of tennis) why they do it and she couldn't give me answer. She did, however, note that it only started a couple of y... | askscience | {
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} | Is their a psychological or physical benefit to tennis players who "moan", "groan" or scream every time they hit the ball?
I was visiting my grandma the other day. While watching tennis I noted how some players "moan","groan", or scream with every hit they give. It annoyed me terribly so I asked my grandma (who watches... | [
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6rvfui | Because of the curvature of the Earth, are nearby skyscrapers closer together at the base than they are at the top? | askscience | {
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"Yes.\n\nIf the two 100-floor buildings are one NYC block apart, which is 0.05 mile or 1/500000 of Earth's circumference, their 100th floors, which are .2 mile higher than their first floors, are going to be 2 * .2 mi * pi / 500000 further a... | {
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"url": [
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} | Because of the curvature of the Earth, are nearby skyscrapers closer together at the base than they are at the top?
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582vaf | Has it been scientifically proven that Nuclear Fusion is actually a possibility and not a 'golden egg goose chase'? | Whelp... I went popped out after posting this... looks like I got some reading to do thank you all for all your replies! | askscience | {
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"https://youtu.be/nWjAJKPLMEo",
"https://www.amazon.com/Plasma-Physics-Fusion-Jeffrey-Freidberg/dp/0521733170",
"http://klotza.blogspot.com/2016/08/whats-deal-with-fusion-power... | Has it been scientifically proven that Nuclear Fusion is actually a possibility and not a 'golden egg goose chase'?
Whelp... I went popped out after posting this... looks like I got some reading to do thank you all for all your replies! | [
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192wsu | Can blue whales have heart attacks or are their arteries just too big to clog up? | askscience | {
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21pt1j | How far along in the digestive process can something still be regurgitated? | askscience | {
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"It's not normal by any means, but it's entirely possible to vomit things from as far along as the large intestine ([fecal vomiting](_URL_1_)), at least in humans.\n\nAlso, you shouldn't assume that two animals' digestive syst... | {
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"url": [
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} | How far along in the digestive process can something still be regurgitated?
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4n5usy | Can the completion of a circuit be used to communicate instantaneously? (Faster than light) | I'm currently taking physics 20 so I'm really inexperienced with this stuff, so I need someone who knows their stuff to help me with this: If you have an ideal battery on Earth (enough power to complete the task I'm about to propose), and you run an ideal wire from the negative terminal to a person standing on the moon... | askscience | {
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"> My physics teacher says yes,\n\nHe... | {
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} | Can the completion of a circuit be used to communicate instantaneously? (Faster than light)
I'm currently taking physics 20 so I'm really inexperienced with this stuff, so I need someone who knows their stuff to help me with this: If you have an ideal battery on Earth (enough power to complete the task I'm about to pro... | [
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wvoxz | I accidentally threw a non-rechargeable battery in a charger with some rechargeable batteries a day or so ago. I only noticed this morning. Did I narrowly avoid something catastrophic? | From what I understand, brands of rechargeable battery and charger are interchangeable (seen on a Ray-o-Vac and Energizer websites, can't link now - my apologies), but the charger was Ray-o-Vac and the non-rechargeable battery was Energizer.
Thanks in advance. | askscience | {
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"You could have potentially caused the battery to overheat, rupture, and leak out some electrolyte. I've never seen or heard of a (non-lithium) battery explode unless fire was invo... | {
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"http://en.wikipedia.org/wiki/Recharging_alkaline_batteries",
"http://en.wikipedia.org/wiki/Nickel%E2%80%93cadmium_battery"
]
} | I accidentally threw a non-rechargeable battery in a charger with some rechargeable batteries a day or so ago. I only noticed this morning. Did I narrowly avoid something catastrophic?
From what I understand, brands of rechargeable battery and charger are interchangeable (seen on a Ray-o-Vac and Energizer websites, can... | [
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ik6de | I wish to get into DIY Biology as a hobby. More inside.
| Finishing up my BS in Biology. Grad school in the near future. So, I will be succinct. I want to get into DIY Biology. I have the space and adequate funds for this project. Can any other DIY biologists provide me with some further insights into resources, potential problems, and essential equiptment. Also suggestions o... | askscience | {
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} | I wish to get into DIY Biology as a hobby. More inside.
Finishing up my BS in Biology. Grad school in the near future. So, I will be succinct. I want to get into DIY Biology. I have the space and adequate funds for this project. Can any other DIY biologists provide me with some further insights into resources, potentia... | [
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pgqq3 | A controversial question about the Egyptian Pyramids and the history of human civilization (including a challenge to the current evolutionary timeline). I'm hoping to see discussion/input from multiple disciplines. Peace. | askscience | {
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"> The length that we call a Metre (Meter in American English), is a very precisely defined unit of measure with correlations to both the circumference of the earth and the speed of light.\n\nThere's nothing spe... | {
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"url": [
"http://www.google.ca/webhp?rlz=1C1GPEA_enCA361CA384&sourceid=chrome-instant&ix=heb&ie=UTF-8&ion=1#hl=en&safe=off&rlz=1C1GPEA_enCA361CA384&output=search&sclient=psy-ab&q=convert%20cubits%20to%20meters&pbx=1&oq=&aq=&aqi=&aql=&gs_sm=&gs_upl=... | A controversial question about the Egyptian Pyramids and the history of human civilization (including a challenge to the current evolutionary timeline). I'm hoping to see discussion/input from multiple disciplines. Peace.
| [
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2put62 | If I add 0,5 L of 100 °C water to 0,5 L of 0 °C water, will I get 1 L of 50 °C water? | And if no, why not?
Green tea manufacturers and sellers always say to use 75 °C water to make aforementioned green tea, but I'm not sure how to do that, so I figured I'll add two volumes of boiling (100 °C) to one volume of room temperature (20 °C) water because (100+100+20)/3 gives a number close enough to 75 (73,333... | askscience | {
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"This works to the extent that we can treat the specific heat of water (the amount of energy needed to raise a mass of water one degree) as independent of temperature.\n\nBetween 0 and 100, the sp... | {
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"url": [
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} | If I add 0,5 L of 100 °C water to 0,5 L of 0 °C water, will I get 1 L of 50 °C water?
And if no, why not? Green tea manufacturers and sellers always say to use 75 °C water to make aforementioned green tea, but I'm not sure how to do that, so I figured I'll add two volumes of boiling (100 °C) to one volume of room tempe... | [
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3c9e47 | Can commercial airlines fly upside down (loops, rolls, etc)? | While flying into Denver today I remembered a strip from Calvin and Hobbes: Calvin--imagining himself a pilot--competes against a rival pilot to land his aircraft first. In one of the final scenes, Calvin "switches on the 'Fasten Seatbelt' light and does a barrel-roll" (or something to the effect).
Could this happen ... | askscience | {
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"I can't speak for specifically all commercial planes, but here is a video of as well as interview of test pilot Tex Johnson executing a roll in a Boeing 707, \n_URL_0_",
"What maneuvers an aircraft can do ... | {
"url": []
} | {
"url": []
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"url": [
"https://youtu.be/Ra_khhzuFlE",
"https://youtu.be/gWIWAI6GmQQ?t=57",
"https://www.youtube.com/watch?v=RJxnwF-MPi0",
"https://www.youtube.com/watch?v=B5_8D8HCnS4",
"https://www.youtube.com/watch?v=fRtOGJTqjkQ",
"https://www.youtube.com/watch?v=EniTCmJlVEo"
]
} | Can commercial airlines fly upside down (loops, rolls, etc)?
While flying into Denver today I remembered a strip from Calvin and Hobbes: Calvin--imagining himself a pilot--competes against a rival pilot to land his aircraft first. In one of the final scenes, Calvin "switches on the 'Fasten Seatbelt' light and does a ba... | [
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1e1ozi | why aren't semis shaped like a bullet train? | a big factor in the poor fuel economy of semi trucks is their drag. I assume that bullet trains are one of the best designs in terms of reducing drag. why are semis not shaped similarly? | askscience | {
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"url": []
} | {
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a big factor in the poor fuel economy of semi trucks is their drag. I assume that bullet trains are one of the best designs in terms of reducing drag. why are semis not shaped similarly? | [
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1rtwd1 | Why do I struggle not to sink in water while everyone else I know floats with ease? | askscience | {
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} | Why do I struggle not to sink in water while everyone else I know floats with ease?
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nqjqn | How does a cell "know" where to position it's self in the body. | This is very hard for to to try to explain, but for example when a lizard's tail is cut off, how do the stem cells "move" in the position of the tail.
| askscience | {
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"Generally, development follows the direction of [morphogens](_URL_1_), biological signals that form a gradient that cells use to determine where to migrate.\n\nInterestingly, a famous one is named [Sonic Hedgehog](_URL_0_), from those heady... | {
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} | {
"url": [
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This is very hard for to to try to explain, but for example when a lizard's tail is cut off, how do the stem cells "move" in the position of the tail. | [
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pt6bv | Have you ever looked over at a passing car on the highway, to be met a few seconds later by the occupant's gaze? Why do we seem able to detect when others are looking at us? | askscience | {
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"http://science.discovery.com/videos/through-the-wormhole-sixth-sense/",
"http://www.sheldrake.org/Articles&Papers/papers/staring/"
]
} | Have you ever looked over at a passing car on the highway, to be met a few seconds later by the occupant's gaze? Why do we seem able to detect when others are looking at us?
| [
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21841b | Ethics in Science: Part 4 of our feature series on how science is conducted | Welcome to the final week of our feature series on the process of being a scientist! In previous weeks we've covered [aspects of day-to-day life](_URL_0_) while working in research, [the peer review/publication process](_URL_1_), and [current and landmark papers of note](_URL_2_).
_____
This week we'll be discussing... | askscience | {
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"How do you explain the huge gap in worker compensation between academia and industry? I hear lots of stories about university faculty a... | {
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"http://www.reddit.com/r/askscience/comments/1y589g/stand_back_im_going_to_try_science_a_new_weekly/",
"http://www.reddit.com/r/askscience/comments/1zfkg4/behind_the_veil_of_peerreview_part_2_of_our/",
"http://www.reddit.com/r/askscience/comments/201l1k/journal_club_part_3_of_our_feature_series... | {
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"http://en.wikipedia.org/wiki/Milgram_experiment",
"http://en.wikipedia.org/wiki/Stanford_prison_experiment",
"http://en.wikipedia.org/wiki/Tearoom_Trade",
"http://en.wikipedia.org/wiki/Tuskegee_syphilis_experiment"
]
} | Ethics in Science: Part 4 of our feature series on how science is conducted
Welcome to the final week of our feature series on the process of being a scientist! In previous weeks we've covered [aspects of day-to-day life](_URL_0_) while working in research, [the peer review/publication process](_URL_1_), and [current a... | [
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4htzhn | PLOS Science Wednesday: Hi reddit, we’re Neelesh Patankar and Malcolm MacIver, and we published a paper in PLOS Biology showing a mechanically optimal method of swimming evolved independently in vertebrate and invertebrate swimmers – Ask Us Anything! | Hi Reddit!
My name is Neelesh Patankar, and I am the Charles Deering McCormick Professor of Teaching Excellence and Associate Chair of the Department of Mechanical Engineering at Northwestern University. Following my Ph.D. in Mechanical Engineering at University of Pennsylvania, I was a post-doctoral associate with P... | askscience | {
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"http://www.sciencedirect.com/science/article/pii/S0022249605000891",
"http://www.ncbi.nlm.nih.gov/pubmed/1697... | PLOS Science Wednesday: Hi reddit, we’re Neelesh Patankar and Malcolm MacIver, and we published a paper in PLOS Biology showing a mechanically optimal method of swimming evolved independently in vertebrate and invertebrate swimmers – Ask Us Anything!
Hi Reddit! My name is Neelesh Patankar, and I am the Charles Deering ... | [
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1mtuin | Why water? | The majority of all power plants uses some sort of energy source to heat up water. It is then the water vapor which turns the turbines that produces electricity.
Water is also a compound has an extremely high heat capacity (requires an incredible amount of energy to heat up).
**My question is this:** Why not use a com... | askscience | {
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"http://en.wikipedia.org/wiki/Steam_generator_\\(nuclear_power\\)#Typical_operating_conditions",
"http://en.wikipedia.org/wiki/Stirling_engine",
... | Why water?
The majority of all power plants uses some sort of energy source to heat up water. It is then the water vapor which turns the turbines that produces electricity. Water is also a compound has an extremely high heat capacity (requires an incredible amount of energy to heat up). **My question is this:** Why not... | [
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a9bkz3 | Are there any animals that don’t fit easily into a group (mammals, birds, etc)? | Like a mammal that lays eggs or a bird that’s cold blooded? Obviously that’s pretty extreme. But are there any animals whose group is debated?
I find it kinda of amazing that in the process of evolution and natural selection, these groups would be so distinct and animals fit so well in them. | askscience | {
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"url": [
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"https://en.wikipedia.org/wiki/Horizontal_gene_transfer",
"https://en.wikipedia.org/wiki/Endosymbiont",
"https://en.wi... | Are there any animals that don’t fit easily into a group (mammals, birds, etc)?
Like a mammal that lays eggs or a bird that’s cold blooded? Obviously that’s pretty extreme. But are there any animals whose group is debated? I find it kinda of amazing that in the process of evolution and natural selection, these groups w... | [
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8gg8dh | How was the first parachute tested? | askscience | {
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} | How was the first parachute tested?
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1lx3wz | How can such a TINY amount of venom from some poisonous species so adversely affect the human body relative to weight. | Not just the human body, but large animals in general.
For example the for the poison dart frog, only 2 micrograms of its toxin (the amount that fits on the head of a pin) being and 0.006mg of the Brazilian Wandering Spider's venom are enough to kill a human.
It's just hard to wrap my head around just how deadly so... | askscience | {
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} | How can such a TINY amount of venom from some poisonous species so adversely affect the human body relative to weight.
Not just the human body, but large animals in general. For example the for the poison dart frog, only 2 micrograms of its toxin (the amount that fits on the head of a pin) being and 0.006mg of the Braz... | [
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1fmwet | Why is it possible to freeze semen and then have it function properly when thawed? | And can this be done with other organism and what are the limits? | askscience | {
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And can this be done with other organism and what are the limits? | [
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pc1b4 | Why is the content in the universe localized.
| What I mean by that is why are there galaxies, solar system and in between them nothing. Why isn't the material in the universe equally spread throughout. | askscience | {
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} | Why is the content in the universe localized.
What I mean by that is why are there galaxies, solar system and in between them nothing. Why isn't the material in the universe equally spread throughout. | [
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nhsey | Since the optometrist just asks me "Which is better: A or B?" over and over, why can't I just go to the glasses store and do that with all the lenses they have? | I understand there are specific conditions that need more attention than that and contacts have to be certain sizes (or something?), but for just basic glasses, why do we need prescriptions?
Edit: I apologize if I made the process sound incredibly simplistic. I knew there had to be more to it than I was understanding.... | askscience | {
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"url": [
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"http://en.wikipedia.org/wiki/Astigmatism_(eye\\)",
"http://www.ted.com/talks/josh_silver_demos_adjustable_liquid_filled_eyeglasses.html"
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} | Since the optometrist just asks me "Which is better: A or B?" over and over, why can't I just go to the glasses store and do that with all the lenses they have?
I understand there are specific conditions that need more attention than that and contacts have to be certain sizes (or something?), but for just basic glasses... | [
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87jf7s | Are mascara and make-up a problem in satellite clean rooms? | I just happened to see photos of people in a satellite clean room and one had mascara and make-up. I was thinking about potential contamination of the device if some mascara or make-up dust would fall on the device. | askscience | {
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"url": [
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} | Are mascara and make-up a problem in satellite clean rooms?
I just happened to see photos of people in a satellite clean room and one had mascara and make-up. I was thinking about potential contamination of the device if some mascara or make-up dust would fall on the device. | [
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o32bp | AskScience AMA Series - IAMA Population Genetics/Genomics PhD Student | askscience | {
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} | {
"url": [
"http://www.ted.com/talks/cynthia_kenyon_experiments_that_hint_of_longer_lives.html",
"http://www.ted.com/talks/juan_enriquez_on_genomics_and_our_future.html",
"http://www.ama-assn.org/amednews/2011/12/19/gvsc1219.htm"
]
} | AskScience AMA Series - IAMA Population Genetics/Genomics PhD Student
| [
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tq49p | Is the 'tension' of which masseurs speak a real thing? | When you are stressed, do your muscles tighten? And how is this detected (and further: alleviated) by poking around?
| askscience | {
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"url": [
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When you are stressed, do your muscles tighten? And how is this detected (and further: alleviated) by poking around? | [
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1mat3m | How is .999999999 ad infinitum exactly equal to 1? | askscience | {
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"url": []
} | {
"url": []
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"url": [
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]
} | How is .999999999 ad infinitum exactly equal to 1?
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5h0cf9 | Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology | Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on **Economics, Political Science, Linguistics, Anthropology**
Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big ... | askscience | {
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"text": [
"What aspect/topic/principle in economics is often seen as confusing but is actually easy to understand?",
"When discussing economics of different ... | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/askscience/search?q=flair%3A%27meta%27&restrict_sr=on&sort=new&t=all",
"http://www.reddit.com/r/askscience/wiki/index#wiki_answering_askscience",
"https://www.reddit.com/r/askscience/comments/3exo6p/askscience_panel_of_scientists_xiii/"
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} | {
"url": []
} | Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on **Economics, Political Science, Linguistics, Anthropology** Do you have a question within these topics you weren't sure was worth submitting? Is something... | [
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1jcmxa | Are $X.99 pricing schemes still effective psychological tricks to make a person feel as if something costs less than it actually does? | Is there any data on the effectiveness of these kinds of pricing schemes as time goes on? I mean, nowadays you see $99.95 dollars and you think "a hundred bucks." I can't imagine the psychological trickery that would make a person just glance at the price and think "99 dollars" instead is as effective anymore.
Tha... | askscience | {
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} | Are $X.99 pricing schemes still effective psychological tricks to make a person feel as if something costs less than it actually does?
Is there any data on the effectiveness of these kinds of pricing schemes as time goes on? I mean, nowadays you see $99.95 dollars and you think "a hundred bucks." I can't imagine the ps... | [
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zak7x | Evolution: What similar features in nature have evolved completely independent from one another. | Hello askscience,
I got the following question:
Are there features that have evolved on two different lifeforms that can not be traced back to a common ancestor?
So lets say there are insects and mammals, and both have eyes. Do these eyes come from a creature that is a common ancestor to both, or did this evolution ... | askscience | {
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"It seems silly to type it all out when wikipedia has a great article on this one. It is called [convergent evolution](_URL_0_). They even have a huge list [of examples](_URL_1_). It is an interesting phenomena that highlig... | {
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"http://en.wikipedia.org/wiki/Analogy_(biology)",
"http://en.wikipedia.org/wiki/Homology_(biology... | Evolution: What similar features in nature have evolved completely independent from one another.
Hello askscience, I got the following question: Are there features that have evolved on two different lifeforms that can not be traced back to a common ancestor? So lets say there are insects and mammals, and both have eyes... | [
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1kau1g | About Hiroshima and Nagasaki... is my friend full of shit? | So I have a friend who was in the military and claims to have once had top clearance... the thing is I think at least half the things she says is total bullshit. One of her favorite rants is about how the bombings at Hiroshima and Nagasaki are still causing shockwaves and another one is due shortly. Some of the effec... | askscience | {
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"http://en.wikipedia.org/wiki/Tsar_Bomba"
]
} | About Hiroshima and Nagasaki... is my friend full of shit?
So I have a friend who was in the military and claims to have once had top clearance... the thing is I think at least half the things she says is total bullshit. One of her favorite rants is about how the bombings at Hiroshima and Nagasaki are still causing sho... | [
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3j81fq | Came across this "fact" while browsing the net. I call bullshit. Can science confirm? | If you have 23 people in a room, there is a 50% chance that 2 of them have the same birthday. | askscience | {
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"https://en.wikipedia.org/wiki/Birthday_problem",
"https://www.survey... | Came across this "fact" while browsing the net. I call bullshit. Can science confirm?
If you have 23 people in a room, there is a 50% chance that 2 of them have the same birthday. | [
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4f1f5s | What makes electomagnetic waves able to propagate without a medium and other not other waves?? | askscience | {
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} | What makes electomagnetic waves able to propagate without a medium and other not other waves??
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9pyd2c | Is there way to determine how fast program will execute task? | I know some programming languages are faster and some slower, can we predict how much time computer need in particular language? | askscience | {
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3p2ktg | How were scientists able to study molecular structure in the 1800's? | I was just watching a SciShow video about how scientists discovered what the compound vanillin "looked like" (what gives vanilla it's taste), aka it's molecular structure... and tried to recreate it from a component in tree bark. Then I learned this was in 1874. I thought I misheard it at first.
How in the world w... | askscience | {
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"https://en.wikipedia.org/wiki/Vanillin",
"https://en.wikipedia.org/wiki/Mass_spectrome... | How were scientists able to study molecular structure in the 1800's?
I was just watching a SciShow video about how scientists discovered what the compound vanillin "looked like" (what gives vanilla it's taste), aka it's molecular structure... and tried to recreate it from a component in tree bark. Then I learned this w... | [
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58b033 | How can I draw erasably on a pumpkin? | I do very intricate pumpkin carvings and this year I'm trying to sketch it by hand first instead of making a stencil and transfering the pattern by puncturing it. This is due to my poor results last year. The waxy skin is making this very difficult.
So I'm looking for something that will:
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I do very intricate pumpkin carvings and this year I'm trying to sketch it by hand first instead of making a stencil and transfering the pattern by puncturing it. This is due to my poor results last year. The waxy skin is making this very difficult. So I'm looking for something tha... | [
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10uhfj | Science teacher - struggling with some concepts around rolling balls. Help? | I'm a bit embarrassed to be asking this, since I am a science teacher, but I need some help.
I'm an elementary science teacher developing a new unit for first graders about some simple physics concepts and experimental design. The students will be doing experiments with balls and inclined planes. I have a whole bunch ... | askscience | {
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]
} | Science teacher - struggling with some concepts around rolling balls. Help?
I'm a bit embarrassed to be asking this, since I am a science teacher, but I need some help. I'm an elementary science teacher developing a new unit for first graders about some simple physics concepts and experimental design. The students will... | [
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z2uot | Why can't we bend things like glass or concrete? | Intuitively, it would seem as though given enough time and enough pressure, we should be able to bend anything.
Am I wrong in assuming some things aren't bendable? And if I'm right, and we can't bend certain things, why not? | askscience | {
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"url": [
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} | Why can't we bend things like glass or concrete?
Intuitively, it would seem as though given enough time and enough pressure, we should be able to bend anything. Am I wrong in assuming some things aren't bendable? And if I'm right, and we can't bend certain things, why not? | [
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25d7so | We are planetary scientists! AUA! | We are from [The University of Arizona](_URL_2_)'s [Department of Planetary Science, Lunar and Planetary Lab (LPL)](_URL_3_). Our department contains research scientists in nearly all areas of planetary science.
In brief (feel free to ask for the details!) this is what we study:
* **K04PB2B**: orbital dynamics, exop... | askscience | {
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We are from [The University of Arizona](_URL_2_)'s [Department of Planetary Science, Lunar and Planetary Lab (LPL)](_URL_3_). Our department contains research scientists in nearly all areas of planetary science. In brief (feel free to ask for the details!) this is what we study: * **K0... | [
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1zn6od | Youngest person to achieve atomic fusion: what has he actually done? | If you haven't seen it in the news here is a link: _URL_0_
I understand the basic principles of fusion, but how is this different to what governments are spending billions on? If it's so easy why aren't more people doing it? | askscience | {
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If you haven't seen it in the news here is a link: _URL_0_ I understand the basic principles of fusion, but how is this different to what governments are spending billions on? If it's so easy why aren't more people doing it? | [
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10qenp | My Crabapple tree is blooming in the fall and we live in Alberta, Canada. This has never happened before and we've lived here for 10 years. What is happening? [pic] | Here is a [picture](_URL_0_) we took a few days ago of the first bloom we noticed. The tree gets lightly trimmed every year and is well taken care. It never undergoes any stress, as far as we know.
Super curious! Any thoughts? | askscience | {
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Here is a [picture](_URL_0_) we took a few days ago of the first bloom we noticed. The tree gets lightly trimmed every year and is well taken care. It neve... | [
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20wp8p | When building like the Empire State Building (or taller) get too old and need to be brought down, how will they do it safely? | askscience | {
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... | When building like the Empire State Building (or taller) get too old and need to be brought down, how will they do it safely?
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6c3t0s | If each day is only 23h56m4s, over the course of 4 years, we accumulate 95.7 hours of unaccounted time when approximating each day to 24 hours. We give ourselves one extra day in February, which accounts for only 24 hours of that extra time, but where does that extra 71.7 hours go? | This also means that our calendar should shift over 3 days every 4 years, changing the "location" of the seasons in our man made calendar
Edit: Thanks for the responses everyone, I understand it totally now. My students ask me this question every year when I teach the unit on Earth and space and every year a student a... | askscience | {
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This also means that our calendar sho... | [
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zq25j | Today I found what appears to a be a plant that repaired a broken limb with as smaller support limb. What is going on with this? (Pics inside) | So I am calling it a buttress, but I don't really know what this phenomenon is called. I have been unsuccessful in googleing any information on the matter.
Please excuse my fuzzy phone pics.
[PICS](_URL_0_)
PS: I posted the same gallery in r/plants to see if they could identify the plant itself, in case that helps.... | askscience | {
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} | Today I found what appears to a be a plant that repaired a broken limb with as smaller support limb. What is going on with this? (Pics inside)
So I am calling it a buttress, but I don't really know what this phenomenon is called. I have been unsuccessful in googleing any information on the matter. Please excuse my fuzz... | [
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73nf2b | Why can't we recycle everything? | Aside from food and wood-related products (like paper), nearly everything we use is made out of plastic and metal, so why can't we just recycle *all* of it? Are we really just limited to plastic bottles and aluminum, or is it simply not cost-effective to recycle everything we make?
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} | Why can't we recycle everything?
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4p4cji | Hi Reddit, I’m Margaret Leinen, here to talk about the world’s oceans and how we observe them. Ask Me Anything! | I’m the president (_URL_0_) of the American Geophysical Union, the world’s leading organization of earth and space scientists, and I’m also the director of Scripps Institution of Oceanography (_URL_1_) at UC San Diego (_URL_4_), which has a global focus on understanding and protecting the planet through ocean, earth, a... | askscience | {
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... | Hi Reddit, I’m Margaret Leinen, here to talk about the world’s oceans and how we observe them. Ask Me Anything!
I’m the president (_URL_0_) of the American Geophysical Union, the world’s leading organization of earth and space scientists, and I’m also the director of Scripps Institution of Oceanography (_URL_1_) at UC ... | [
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ilt24 | If an explosive goes off inside a 20 feet wide lead cube with no openings and a hollow center shaped as the explosive, do you hear it? | This once popped into my mind ages ago. I guess I wanted to know what happens when a powerful explosion goes off in a 100% solid container. As in: if the container doesn't blow up, what happens to all the energy of the explosion as sensed by someone right outside the cube? Would I hear an explosion? Would I just feel h... | askscience | {
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"What you just described is called a bomb calorimeter, and yes, you can hear it. \"Bombs\" are used to very precisely measure the amount of energy released during a comb... | {
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} | If an explosive goes off inside a 20 feet wide lead cube with no openings and a hollow center shaped as the explosive, do you hear it?
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mjaer | Can "nothing" exist? | Like an area in the universe where there are no physical particles present? What is empty space then?
Edit: I'll try and clarify, I'm asking if it is possible for an area with absolutely *no* particles to exist. | askscience | {
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} | Can "nothing" exist?
Like an area in the universe where there are no physical particles present? What is empty space then? Edit: I'll try and clarify, I'm asking if it is possible for an area with absolutely *no* particles to exist. | [
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4ssvvc | AskScience AMA Series: I am /u/CosmoSounder and I study the processes inside supernovae. Ask Me Anything! | Hi everyone. I do theoretical and computational work on supernova neutrino oscillations and nucleosynthesis. I have worked with trying to predict the neutrino output of a star undergoing the early stages of supernova, and am currently working on a project that will examine the feedback process between neutrino oscillat... | askscience | {
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Hi everyone. I do theoretical and computational work on supernova neutrino oscillations and nucleosynthesis. I have worked with trying to predict the neutrino output of a star undergoing the early stages of superno... | [
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1t896v | Is a stream of accelerated protons visible and if so, what does it look like? | askscience | {
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"http://cerncourier.com/cws/article/cern/27915",
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474tu1 | How does a computer store a number like e? Where would I find e in a computer's memory? | Or pi. Or i. If a number cannot be represented by a ratio of integers, how can we use it in a computer comprising discrete bits? | askscience | {
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} | How does a computer store a number like e? Where would I find e in a computer's memory?
Or pi. Or i. If a number cannot be represented by a ratio of integers, how can we use it in a computer comprising discrete bits? | [
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8vramb | AskScience AMA Series: We are developing a multi-sensor robotic vehicle (named Ugo 1st) for humanitarian de-mining. Ask Us Anything! | Hi reddit! We are developing a multi-sensor robotic vehicle (named Ugo 1st) for humanitarian de-mining in the Eastern Ukraine conflict zone. You can read a bit about it [here](_URL_1_) and see it in action!
Our system includes an impulse ground penetrating radar array (1Tx+4Rx) for rapid detection and precise localiza... | askscience | {
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"How does the system compare with traditional techniques?\n\nIs it capable of operating in active conflict zones like South Sudan?\n\nDoes it have a SI... | {
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} | {
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"http://fenix-insight.com/",
"https://www.nato.int/cps/en/natolive/78209.htm",
"http://www.walnut.co.jp/company/",
"http://www.dsns.gov.ua/en/"... | {
"url": [
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} | AskScience AMA Series: We are developing a multi-sensor robotic vehicle (named Ugo 1st) for humanitarian de-mining. Ask Us Anything!
Hi reddit! We are developing a multi-sensor robotic vehicle (named Ugo 1st) for humanitarian de-mining in the Eastern Ukraine conflict zone. You can read a bit about it [here](_URL_1_) an... | [
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ohei4 | Why is it that romaine lettuce healthier than iceberg lettuce? | askscience | {
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"Looking at the raw data, it seems that romaine by weight is much higher in vitamin content. Now, whether vitamin content is sufficient to conclude that it is healthier or not I'll leave to the reader.\n\nSources: [Romaine](_URL_1_) v [Icebe... | {
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} | {
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"http://nutritiondata.self.com/facts/vegetables-and-vegetable-products/2476/2",
"http://nutritiondata.self.com/facts/vegetables-and-vegetable-products/2475/2",
"http://www.wolframalpha.com/input/?i=+compare+romaine+to+iceberg+lettuce"
]
} | Why is it that romaine lettuce healthier than iceberg lettuce?
| [
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25flqf | Why is the brain folded to such a high degree? | I've heard many answers to this question, mostly along the lines of "it increases the surface area of the brain and this increases the amount of neurons" .
I'm confused as to why the trade off of brain volume for increased surface area allows for greater neurons than the converse. | askscience | {
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} | {
"url": []
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"http://www.nature.com/nature/journal/v385/n6614/abs/385313a0.html",
"https://en.wikipedia.org/wiki/Axons",
... | Why is the brain folded to such a high degree?
I've heard many answers to this question, mostly along the lines of "it increases the surface area of the brain and this increases the amount of neurons" . I'm confused as to why the trade off of brain volume for increased surface area allows for greater neurons than the c... | [
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25fmqd | Are there any machines that are completely able to replicate themselves? | I had an /r/Showerthoughts about 3d printers being able to print themselves, but apprently that's not 100% possible what with the non plastic parts required. But are there any machines that have been designed to be able to 100% replicate themselves? If not, would this be possible with todays technology? | askscience | {
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"[Relevant](_URL_0_): The mathematician Von Neumann thought long and hard about this problem, and many others have as well. It relates to Doug Hofstadter's tangled lo... | {
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} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Self-replicating_machine",
"http://reprap.org/wiki/MetalicaRap",
"http://reprap.org/wiki/Tantillus",
"http://hackaday.com/2009/04/19/printing-circuits-on-the-reprap/"
]
} | Are there any machines that are completely able to replicate themselves?
I had an /r/Showerthoughts about 3d printers being able to print themselves, but apprently that's not 100% possible what with the non plastic parts required. But are there any machines that have been designed to be able to 100% replicate themselve... | [
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4jqky9 | Where is the line drawn for what counts as one molecule? Is a full strand of DNA one molecule? Is the membrane for the nucleus? | askscience | {
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"url": []
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"url": [
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"http://i.imgur.com/HYe2yQG.gif",
"https://en.wikipedia.org/wiki/Duck_test",
"https://www.ncbi.nlm.nih.gov/books/NBK22534/",
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3438546/"
]
} | Where is the line drawn for what counts as one molecule? Is a full strand of DNA one molecule? Is the membrane for the nucleus?
| [
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487vbb | Would the trans-atlantic cable still be in existence? | It was laid so long ago, Has anyone looked for it? Is it too deep or the currents moved it? Or has the saltwater corroded it into dust?
Sorry if this may not be a suitable question for r/askscience
| askscience | {
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"The transatlantic telegraph cable was insulated by [gutta-percha](_URL_1_). Wikipedia is lacking in detail, but from my Bell labs book (The Idea Factory) and [here](_URL_0_), the [Teredo Worm](_... | {
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"url": []
} | {
"url": [
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"https://m.flickr.com/#/photos/baccalieu/5550902196/in/set-72157626327302894/",
"http://www.h... | Would the trans-atlantic cable still be in existence?
It was laid so long ago, Has anyone looked for it? Is it too deep or the currents moved it? Or has the saltwater corroded it into dust? Sorry if this may not be a suitable question for r/askscience | [
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1445df | Does our body store every antibody to every infection/disease we've ever had? | If so, where are they stored and how is it "coded"? | askscience | {
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"url": []
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} | Does our body store every antibody to every infection/disease we've ever had?
If so, where are they stored and how is it "coded"? | [
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1i1jq7 | Why is thermal vision like FLIR so expensive? Is it the materials? | askscience | {
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"url": [
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"http://en.wikipedia.org/wiki/Mercury_cadmium_telluride",
"http://en.wikipedia.org/wiki/Curiosity_(rover\\)#Chemistr... | Why is thermal vision like FLIR so expensive? Is it the materials?
| [
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7mub6z | Can temperature affect the speed of electricity? And if so can extreme temperature, hot or cold, completely stop the electric current through something? Power lines, electronics, etc. | Just curious if extreme cold but also extreme heat can affect the speed of electricity through something..? I’ve seen when it is extremely cold my phone appears “laggy” is this do to the cold on its processor? And also can extreme temperatures affect power lines and things of that sort?
Edit: Thank you guys for all o... | askscience | {
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"I am not quite sure about the actual \"speed\" of the electr... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://en.m.wikipedia.org/wiki/Electromagnetic_wave_equation",
"https://www.doitpoms.ac.uk/tlplib/dielectrics/temperature.php",
"https://en.wikipedia.org/wiki/Characteristic_impedance",
"https://en.wikipedia.org/wiki/Speed_of_electricity",
"https://en.wikipedia.org/wiki/Superconductiv... | Can temperature affect the speed of electricity? And if so can extreme temperature, hot or cold, completely stop the electric current through something? Power lines, electronics, etc.
Just curious if extreme cold but also extreme heat can affect the speed of electricity through something..? I’ve seen when it is extreme... | [
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68y8fk | Alright, I am not a Flat Earther, but I want to know how and why it's a sphere and how I can prove that without using Bill Nye? | askscience | {
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"This is the kind of really great question some of my highschool physics teachers would ask us when then wanted to keep us on our toes, ... | {
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} | {
"url": []
} | {
"url": [
"https://en.wikipedia.org/wiki/Geoid",
"http://media.al.com/news_impact/photo/lunar-eclipsejpg-b54a8b07291a6715.jpg",
"https://en.wikipedia.org/wiki/Eratosthenes",
"http://burro.case.edu/Academics/Astr306/Coords/NMSkies_StarTrails2.jpg",
"http://onlinelibrary.wiley.com/doi/10.1029/2000J... | Alright, I am not a Flat Earther, but I want to know how and why it's a sphere and how I can prove that without using Bill Nye?
| [
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8thjes | Can we apply the principle behind quantum tunnel (of greatly reduced, but greater than 0 chance of occuring) to chemical systems? | Hello!
I am wondering whether the idea behind quantum tunneling, that while there is a well defined, high probably set of probabilities that will occur, less probable outcomes are still possible, although exponentionally less so.
What I am thinking as an example is a simple stochiometric mixture of H2 and Cl2 at atmo... | askscience | {
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"text": [
"Quantum tunneling is an important part of many chemical reactions. However, hydrogen is really the only atom that undergoes tunneling to a significant extent, since other atoms are too heavy. However, there are a few exceptions:\n\n_URL_1_\... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://aip.scitation.org/doi/abs/10.1063/1.468486",
"http://science.sciencemag.org/content/299/5608/833",
"https://books.google.com/books?id=vyHwCAAAQBAJ&pg=PA67&lpg=PA67&dq=D2+Cl2+kinetics&source=bl&ots=6ZBYWcPiGF&sig=dMBQHaQ_kb7sAx_BQyXnRCBPbj0&hl=en&sa=X&... | Can we apply the principle behind quantum tunnel (of greatly reduced, but greater than 0 chance of occuring) to chemical systems?
Hello! I am wondering whether the idea behind quantum tunneling, that while there is a well defined, high probably set of probabilities that will occur, less probable outcomes are still poss... | [
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1d8tuw | Difficulty of simulating fluids | What are the specific difficulties involved in simulating fluids? How are fluids simulated in most programs and how can it be simulated perfectly? | askscience | {
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} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Navier-Stokes_equations",
"http://apollo.lsc.vsc.edu/classes/met455/notes/section7/1.html",
"https://en.wikipedia.org/wiki/Molecular_dynamics",
"https://en.wikipedia.org/wiki/Large_eddy_simulation"
]
} | Difficulty of simulating fluids
What are the specific difficulties involved in simulating fluids? How are fluids simulated in most programs and how can it be simulated perfectly? | [
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n29mi | "Mexican Standoffs": Why doesn't one guy just shoot the other in the head? Is there a real danger in shooting someone in the head who has a gun pointed at you? | I hope that the title makes sense. I'll clarify if it isn't 'science-y' enough.
EDIT: Specifics about this case:
*
Only two shooters, Shooter A and B.
*
Shooter 'A' never misses, guaranteeing a perfect headshot.
My question is this: Could Shooter B's body, specifically his trigger finger, "twitch" with enough ... | askscience | {
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"I would split this question into the following parts:\n\nQuestion One: Can the nervous system react to hearing a shot being fired before the fired bullet hits the head?\n\nI can figure out the answer for this one. Assume the ... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.humanbenchmark.com/tests/reactiontime/",
"http://www.youtube.com/watch?v=YYDidT0C0Ic",
"http://en.wikipedia.org/wiki/.44_Magnum",
"http://www.dailymail.co.uk/news/article-1259841/Russian-roulette-shock-wedding-guest-shoots-party-trick-gone-wrong.html"
]
} | "Mexican Standoffs": Why doesn't one guy just shoot the other in the head? Is there a real danger in shooting someone in the head who has a gun pointed at you?
I hope that the title makes sense. I'll clarify if it isn't 'science-y' enough. EDIT: Specifics about this case: * Only two shooters, Shooter A and B. * Shooter... | [
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8nqm8y | Why is the brain divided? | * [A search](_URL_0_) doesn't reveal anything that answers this question specifically.
* Yes, I know that [many of the left brain/right brain claims are false](_URL_1_).
* Essentially I'm asking about the cerebrum's [longitudinal fissure](_URL_2_)--why would such a feature be selected for? Doesn't it waste space that... | askscience | {
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"url": []
} | {
"url": [
"https://www.reddit.com/r/askscience/search?q=brain+divided&restrict_sr=on",
"https://en.wikipedia.org/wiki/List_of_common_misconceptions#Brain",
"https://en.wikipedia.org/wiki/Longitudinal_fissure"
]
} | {
"url": [
"https://www.quizover.com/ocw/mirror/col11496/m46535/1302_Brain_Vesicle_DevN.jpg",
"https://en.wikipedia.org/wiki/Bilateria",
"https://www.frontiersin.org/articles/10.3389/fpsyg.2013.00939/full",
"https://www.amazon.com/Master-His-Emissary-Divided-Western/dp/0300188374/ref=sr_1_1?ie=UTF8&am... | Why is the brain divided?
* [A search](_URL_0_) doesn't reveal anything that answers this question specifically. * Yes, I know that [many of the left brain/right brain claims are false](_URL_1_). * Essentially I'm asking about the cerebrum's [longitudinal fissure](_URL_2_)--why would such a feature be selected for? Doe... | [
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mbpi5 | What different explanations are there of the Easter Island? | I've heard of Jared Diamond's explanation of environmental damage caused by humans. But are there other explanations of these events?
And do the events of actually mean anything compared to us as a race? Is this to serve as a warning? | askscience | {
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"text": [
"Dutch scientist [Jan Boersema](_URL_1_) argues in his book ([English review here](_URL_0_)) that Diamond is cutting corners. \"A collapse in the way most authors have described it, involving a deforestation followed by hunger... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.kitlv-journals.nl/index.php/btlv/article/viewFile/URN%3ANBN%3ANL%3AUI%3A10-1-101395/8665",
"http://www.ivm.vu.nl/en/news-and-agenda/news/2011/jan-boersema.asp"
]
} | What different explanations are there of the Easter Island?
I've heard of Jared Diamond's explanation of environmental damage caused by humans. But are there other explanations of these events? And do the events of actually mean anything compared to us as a race? Is this to serve as a warning? | [
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1pbpbz | Why don't I crush cells when I sit down? | When I put all 160 pounds of me on my rear cells or even foot cells why don't they burst? It just seems like they are so fragile, how do they withstand so much pressure? | askscience | {
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"If you were to put all 160lbs on one cell, it would make sense that the cell would burst. However, that's not what's happening when you sit down. There are thousands, if not millions of cells supporting your weight. The force experienced by... | {
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"url": []
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"url": []
} | Why don't I crush cells when I sit down?
When I put all 160 pounds of me on my rear cells or even foot cells why don't they burst? It just seems like they are so fragile, how do they withstand so much pressure? | [
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nb845 | What's wrong with this baby? | askscience | {
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"That baby is beautiful.\n\nIt looks like Ambras Syndrome to me. I have read that in females it can be more patchy.",
"This thread appears is a bit too close to violating the no medical advice. Ask your old friend what th... | {
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3h7r2q | Is it just complete coincidence that quartz vibrates at an exact fraction of a second and on a binary power? | askscience | {
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ajestt | If inflamation is a response of our immune system, why do we suppress it? Isn't it like telling our immune system to take it down a notch? | askscience | {
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3gup5w | What makes a 'supercomputer' special as compared to a networked server farm? | Supercomputers are built by combining thousands of processing cores together, right? When programming for supercomputers, you already have to be doing massively parallel calculations. Most are using standard, off the shelf commercial grade CPU's and GPU's these days. Its not like the 90's where there was special CPU ar... | askscience | {
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"https://azure.microsoft.com/en-us/services/batch/",
"... | What makes a 'supercomputer' special as compared to a networked server farm?
Supercomputers are built by combining thousands of processing cores together, right? When programming for supercomputers, you already have to be doing massively parallel calculations. Most are using standard, off the shelf commercial grade CPU... | [
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5rtjgk | AskScience AMA Series: I'm Lawrence Krauss, Chair of the Board of Sponsors of the Bulletin of the Atomic Scientists, ask me anything! | Lawrence Krauss, a renowned theoretical physicist, is director of the Origins Project at Arizona State University as well as the Chair of the Board of Sponsors of the Bulletin of the Atomic Scientists, who recently moved the [Doomsday Clock](_URL_0_) 30 seconds closer to midnight. He is the author of more than 300 scie... | askscience | {
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"https://www.reddit.com/r/Physics/co... | AskScience AMA Series: I'm Lawrence Krauss, Chair of the Board of Sponsors of the Bulletin of the Atomic Scientists, ask me anything!
Lawrence Krauss, a renowned theoretical physicist, is director of the Origins Project at Arizona State University as well as the Chair of the Board of Sponsors of the Bulletin of the Ato... | [
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1dazzt | How far back in time would I have to go for my current laptop to be the most powerful computer on earth? | askscience | {
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} | How far back in time would I have to go for my current laptop to be the most powerful computer on earth?
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yjjfe | Response to Irreducible Complexity | Hi everyone,
I've been following the back-and-forths between Michael Behe and his wide variety of opposition and the point I've landed at is this:
**Lee Strobel's Interview with Michael Behe:**
*(On John McDonald)*
**L:** ". . . For instance, John McDonald of the University of Delaware said mousetraps can work well... | askscience | {
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} | {
"url": [
"http://www.arn.org/docs/behe/mb_toresp.htm",
"http://arn.org/docs/behe/mb_trueacidtest.htm"
]
} | {
"url": [
"http://en.wikipedia.org/wiki/Muller%27s_ratchet"
]
} | Response to Irreducible Complexity
Hi everyone, I've been following the back-and-forths between Michael Behe and his wide variety of opposition and the point I've landed at is this: **Lee Strobel's Interview with Michael Behe:** *(On John McDonald)* **L:** ". . . For instance, John McDonald of the University of Delawar... | [
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mw63o | Does a vibration feature on standard disposable razer blades accomplish anything more then adding cost? | Recently I have been disappointed with the performance of my pretty much standard Gillette razer. Shaving along the neck tended to drag and pinch regardless of the age of the blade, shaving cream, or hair length.
In a moment of possible inspiration, possible gullibility I decided to purchase a slightly fancier vibrati... | askscience | {
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"[Gillette bought Duracell](_URL_1_) in 1996 and [Energizer bought Schick](_URL_0_) in 2003. \nNow there are batteries in razors. Funny coincidence. In fact the M3Power [doesn't work as advertised](_URL_2_), and if you bough... | {
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"http://www.m3powersettlement.com/RazorRequest.aspx?lang=EN",
"http://www.madphysics.com/ask/vibrating_gillette_razors... | Does a vibration feature on standard disposable razer blades accomplish anything more then adding cost?
Recently I have been disappointed with the performance of my pretty much standard Gillette razer. Shaving along the neck tended to drag and pinch regardless of the age of the blade, shaving cream, or hair length. In ... | [
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n56z6 | When I tear a loaf of bread, am I breaking atomic bonds? | I understand that I'm not splitting atoms when I tear a loaf of bread apart, but I have taken a whole object and divided it into two distinct halves. On what level is this division happening? | askscience | {
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"url": [
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} | When I tear a loaf of bread, am I breaking atomic bonds?
I understand that I'm not splitting atoms when I tear a loaf of bread apart, but I have taken a whole object and divided it into two distinct halves. On what level is this division happening? | [
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k6rl6 | What is the conserved quantity derived from the wave function's invariance to complex phase shift? | I know from classical mechanics that symmetries and invariances lead to quantities being conserved in the system. I also remember from quantum mechanics that the wave function is invariant to complex phase shift, but we never went over what that implied. What quantity is conserved because of this? | askscience | {
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"url": [
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} | What is the conserved quantity derived from the wave function's invariance to complex phase shift?
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16jn3q | [META] Monday Lab Meeting! | For a new feature here in AS, we are going to hold a lab meeting here in AS for our panelists. Normally lab meetings are weekly affairs where any recent findings are discussed, problems are worked through, and plans are made for the week's experiments.
We're hoping this will give you a taste of what the week-to-week ... | askscience | {
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"http://prd.aps.org/",
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} | [META] Monday Lab Meeting!
For a new feature here in AS, we are going to hold a lab meeting here in AS for our panelists. Normally lab meetings are weekly affairs where any recent findings are discussed, problems are worked through, and plans are made for the week's experiments. We're hoping this will give you a taste ... | [
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1g6v7z | What are some examples of different evolutionary adaptions among different populations of humans? | Aside from Alcohol Dehydrogenase, Lactase never 'turning off', and melanin loss after the agricultural revolution I don't know of any changes in humanity that have been caused by environmental factors. Are there others? | askscience | {
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"http://en.wikipedia.org/wiki/Tay%E2%80%93Sachs_disease",
"http://en.wikipedia.org/wiki/S... | What are some examples of different evolutionary adaptions among different populations of humans?
Aside from Alcohol Dehydrogenase, Lactase never 'turning off', and melanin loss after the agricultural revolution I don't know of any changes in humanity that have been caused by environmental factors. Are there others? | [
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ax6cnx | AskScience AMA Series: We are John Ibbitson, an award-winning journalist, and Darrell Bricker, a leading international social researcher, and we wrote a book about population decline happening sooner than projected. Ask us anything! | An award-winning journalist and leading international social researcher make the provocative argument that the global population will soon begin to decline, dramatically reshaping the social, political, and economic landscape.
For half a century, statisticians, pundits, and politicians have warned that a burgeoning p... | askscience | {
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"Is your claim that population will fall earlier than many forecasters predi... | {
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"url": [
"https://www.penguinrandomhouse.com/books/545397/empty-planet-by-darrell-bricker-and-john-ibbitson/"
]
} | {
"url": []
} | AskScience AMA Series: We are John Ibbitson, an award-winning journalist, and Darrell Bricker, a leading international social researcher, and we wrote a book about population decline happening sooner than projected. Ask us anything!
An award-winning journalist and leading international social researcher make the provoc... | [
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1r37tg | Need to explain gravity and falling objects to my 9yo... | I had an AWESOME conversation about physics, the planets, the sun and gravity with my son last night. I got to spin a weight on a string to demonstrate the moon's orbit, and we did the old "what would fall faster, this rock or this book?" game.
Naturally he chose the heavier one, and since at this weight air resistanc... | askscience | {
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"url": [
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} | Need to explain gravity and falling objects to my 9yo...
I had an AWESOME conversation about physics, the planets, the sun and gravity with my son last night. I got to spin a weight on a string to demonstrate the moon's orbit, and we did the old "what would fall faster, this rock or this book?" game. Naturally he chose... | [
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48yau3 | Question about the effects of FTL on human body ? | Let's assume that a manned space ship is traveling toward a star located 1500 light years away with a speed of 0.99C.
Will time dilation limit the ability of the crew to be able to perform regular activities on on the ship such as eating food and exercising ?
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"text": [
"You are currently travelling through space at 99% the speed of light. Is your ability to eat food hampered?",
"Because velocities are relative, you could instead consider the situation from the spaceship's perspective. Fr... | {
"url": []
} | {
"url": []
} | {
"url": []
} | Question about the effects of FTL on human body ?
Let's assume that a manned space ship is traveling toward a star located 1500 light years away with a speed of 0.99C. Will time dilation limit the ability of the crew to be able to perform regular activities on on the ship such as eating food and exercising ? | [
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t9ppn | Do our bodies have much empty space inside? | The reason I'm asking is this image (NSFL, leg with a cut in it, from r/wtf):
_URL_0_
It looks like there's a lot of empty space inside...in my head that makes little sense, I thought everything is very closely aligned. What's the deal here? | askscience | {
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"Very little, outside the body cavity (and not a lot, there, really). That gap is actually a result of the opposite being true: there is enough pressure against the ... | {
"url": []
} | {
"url": [
"http://www.reddit.com/r/WTF/comments/t8qs4/so_my_friend_cut_her_leg_on_a_broker_mirror_nsfl/"
]
} | {
"url": [
"http://www.newton.dep.anl.gov/askasci/phy05/phy05265.htm",
"http://www.youtube.com/watch?v=kypne21A0R4",
"http://www.google.com/imgres?q=ct+abdomen&um=1&hl=en&client=safari&sa=N&rls=en&biw=1100&bih=711&tbm=isch&tbnid=-_Pi2-CSQEe4_M:&imgrefurl=http://www.... | Do our bodies have much empty space inside?
The reason I'm asking is this image (NSFL, leg with a cut in it, from r/wtf): _URL_0_ It looks like there's a lot of empty space inside...in my head that makes little sense, I thought everything is very closely aligned. What's the deal here? | [
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1fu0tc | How do millipedes walk? | As I was leaving work today, I became fascinated watching a millipede climb on some rocks. It looked like its legs were moving in a wave-like pattern with a set frequency. Was this just my imagination, or do millipedes actually move their legs in such a manner? If they are able to coordinate such an elegant way of movi... | askscience | {
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"First question: it was not your imagination, that's about how it works indeed. They have a segmented body, and each segment has a pair of neural ganglia that contain a [Central Pattern Generator](_URL_5_), or CPG. This thing ... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Mauthner_cell",
"http://en.wikipedia.org/wiki/Spinal_Locomotion",
"http://biorob.epfl.ch/salamandra",
"http://www.sciencedirect.com/science/article/pii/S016622369801340X",
"http://www.sciencemag.org/site/feature/data/prizes/eppendorf/2009/mclean.xhtml",
... | How do millipedes walk?
As I was leaving work today, I became fascinated watching a millipede climb on some rocks. It looked like its legs were moving in a wave-like pattern with a set frequency. Was this just my imagination, or do millipedes actually move their legs in such a manner? If they are able to coordinate suc... | [
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6fs5a4 | Why focus on green energy when fusion could solve all our problems? | [removed] | askscience | {
"a_id": [
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],
"text": [
"Think of it by the following reasoning: How much money and time are you willing to invest into an idea that doesn't have any timeline or concrete promise about its future?\n\nFusion is definately possible but the question is if we can get f... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.abc.net.au/science/articles/2012/04/17/3478276.htm"
]
} | Why focus on green energy when fusion could solve all our problems?
[removed] | [
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277l99 | When you drink water, how is it distributed around the body? | askscience | {
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"text": [
"Once water is absorbed through the GI tract, it enters the bloodstream as plasma volume and is carried throughout the body. There is no specific distribution (eg the body does not route water sp... | {
"url": []
} | {
"url": []
} | {
"url": []
} | When you drink water, how is it distributed around the body?
| [
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n2ylm | Are male cows attracted to female cows with big udders? | Along the lines of how human males are attracted to human female breasts because of several psychological factors - including that big boobs = more milk for offspring | askscience | {
"a_id": [
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"Well domestic cattle are within the genus Bos, most species in this genus, including the closest relatives of domestic cattle, have a mating system whereby one Bull mates with many cows and therefore only a lucky few Bulls get to mate at al... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://en.wikipedia.org/wiki/Breasts#Sexual_characteristic",
"http://www.ncbi.nlm.nih.gov/pubmed?term=breast%20fixation%20zealand"
]
} | Are male cows attracted to female cows with big udders?
Along the lines of how human males are attracted to human female breasts because of several psychological factors - including that big boobs = more milk for offspring | [
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35uljq | If I wanted to randomly find someone in an amusement park, would my odds of finding them be greater if I stood still or roamed around? | Assumptions:
The other person is constantly and randomly roaming
Foot traffic concentration is the same at all points of the park
Field of vision is always the same and unobstructed
Same walking speed for both parties
There is a time limit, because, as /u/kivishlorsithletmos pointed out, the odds are 100% assuming... | askscience | {
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} | {
"url": []
} | {
"url": [
"http://i.imgur.com/5mYnGiT.png",
"http://www.stat.berkeley.edu/~aldous/Papers/me38.pdf",
"http://pomax.github.io/AmusementParkProblem",
"https://github.com/Pomax/AmusementParkProblem",
"www.statslab.cam.ac.uk/~rrw1/research/rendezvous.html",
"http://en.wikipedia.org/wiki/Brownian_m... | If I wanted to randomly find someone in an amusement park, would my odds of finding them be greater if I stood still or roamed around?
Assumptions: The other person is constantly and randomly roaming Foot traffic concentration is the same at all points of the park Field of vision is always the same and unobstructed Sam... | [
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7aq0nt | Can a powerful electrical charge go through a non conductor? | For example, if I were to touch and immensely powerful electrical charge using only a small piece of rubber could it still shock me? | askscience | {
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"text": [
"Air is non-conductor and yet lightning happens\n\nfrom an electrical engineering point of view the barrier between conductor and non-conductor is mostly an arbitrary line depending on the voltage that you are expecting have in a system.\n\n... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://en.wikipedia.org/wiki/Dielectric_strength#Breakdown_field_strength",
"https://en.m.wikipedia.org/wiki/Breakdown_voltage"
]
} | Can a powerful electrical charge go through a non conductor?
For example, if I were to touch and immensely powerful electrical charge using only a small piece of rubber could it still shock me? | [
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7aq4q5 | What things in nature are a binary outcome but not really a 50/50 chance? | For a crude example (there are exceptions of course) humans are born as either a male or female, but despite this being a 1 or the other scenario is it as clear cut at 50/50? Is one more likely than another?
This question isnt just about humans at birth its for all of nature | askscience | {
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],
"text": [
"Tornado rotation direction. Most rotate cyclonically but ~5% rotate anticyclonically (has to do with with details of how they are formed).",
"Though there are, as mentioned, some unusual cases between male ... | {
"url": []
} | {
"url": []
} | {
"url": []
} | What things in nature are a binary outcome but not really a 50/50 chance?
For a crude example (there are exceptions of course) humans are born as either a male or female, but despite this being a 1 or the other scenario is it as clear cut at 50/50? Is one more likely than another? This question isnt just about humans a... | [
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8o1qyl | If Water Is Molecularly Weaker Than Rock, How Can Rivers Wear It Down Over Time? | askscience | {
"a_id": [
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"text": [
"Molecularly weaker is a nonsensical term. Especially since many rocks aren’t even “a molecule”. \n\nOne way that water wears away rocks is that it’s a great polar solvent. It won’t dissolve most rocks as fast as an ionic crystal (e.g. salt)... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://water.usgs.gov/edu/solvent.html",
"https://en.wikipedia.org/wiki/Exfoliating_granite"
]
} | If Water Is Molecularly Weaker Than Rock, How Can Rivers Wear It Down Over Time?
| [
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6es7rh | What's the biological advantage of metamorphosis/pupating if the process is so energy-consuming (destroying the entire body in the pupa and rebuilding it again, rather than simply growing up) and vulnerable? | Not to mention leaving the pupa immobile and completely vulnerable for long stretches of time.
Why do almost all flying insects start as grubs, then mature to have wings, rather than just mature to have wings without pupating (like birds)? | askscience | {
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],
"text": [
"The caterpillar has low mobility and can focus on eating plant food, while the butterfly can live on nectar and because of its high mobility the offspring can be spread in a wider area. So a single specoes can benefit from tw... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://youtu.be/k2hqRv7Nqlk"
]
} | What's the biological advantage of metamorphosis/pupating if the process is so energy-consuming (destroying the entire body in the pupa and rebuilding it again, rather than simply growing up) and vulnerable?
Not to mention leaving the pupa immobile and completely vulnerable for long stretches of time. Why do almost all... | [
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bvvdjr | When people forge metal and parts flake off, what's actually happening to the metal? | Are the flakes impurities? Or is it lost material? And why is it coming off in flakes? | askscience | {
"a_id": [
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"text": [
"I'm just an amateur blacksmith, not a materials scientist, but it is my understanding that scale -- what we call the \"f... | {
"url": []
} | {
"url": []
} | {
"url": [
"https://en.wikipedia.org/wiki/Iron(III)_oxide",
"https://en.wikipedia.org/wiki/Iron(III)\\_oxide",
"https://www.bbc.co.uk/iplayer/episode/b01fkc5n/how-it-works-1-metal"
]
} | When people forge metal and parts flake off, what's actually happening to the metal?
Are the flakes impurities? Or is it lost material? And why is it coming off in flakes? | [
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130elp | Why am i cold inside at 66 degrees F, but very comfortable if not warm outside at the same temp? | askscience | {
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],
"text": [
"There are a variety of factors. One is the sunlight; sun shining on you directly delivers thermal energy through radiation, which can warm you enough to make a noticeable difference. Another is activity; you are likely to b... | {
"url": []
} | {
"url": []
} | {
"url": []
} | Why am i cold inside at 66 degrees F, but very comfortable if not warm outside at the same temp?
| [
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jw4jz | Could somebody explain conscience through evolution? | edit:
**Note:** Conscience, NOT consciousness. | askscience | {
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"text": [
"It is an altruistic trait, meaning that it prefers preservation of the group rather than the individual. There are many examples of alt... | {
"url": []
} | {
"url": []
} | {
"url": [
"http://www.bun.kyoto-u.ac.jp/~suchii/D.onM.html",
"http://www2.psych.ubc.ca/~henrich/pdfs/Henrich_Joyce_Volume_Final.pdf",
"http://en.wikipedia.org/wiki/Dual_inheritance_theory",
"http://www.amazon.com/Moral-Psychology-Evolution-Adaptations-Innateness/dp/0262693542/"
]
} | Could somebody explain conscience through evolution?
edit: **Note:** Conscience, NOT consciousness. | [
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... |
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