q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
crev00 | Why don’t fermented foods (kimchi, sauerkraut, etc.) not have lots of alcohol? | askscience | https://www.reddit.com/r/askscience/comments/crev00/why_dont_fermented_foods_kimchi_sauerkraut_etc/ | {
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"There are different kinds of fermentation, and not all produce alcohol. For kimchi and sauerkraut, lactic acid is the main product."
]
} | [] | [] | [
[]
] | ||
mhrv9 | why do we measure the energy in food in calories? | I understand a calorie is a unit of energy, and it is calculated by burning whatever it is we want to measure and then determine how much it can raise the temperature of water. But our bodies aren't little fires, right? Is there more to calories than the number? Are our bodies better at extracting energy from some t... | askscience | http://www.reddit.com/r/askscience/comments/mhrv9/why_do_we_measure_the_energy_in_food_in_calories/ | {
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"text": [
"We measure energy in calories because both our cells and a fire are doing the same thing - releasing energy by breaking apart molecules. The basic principle in a fire is that the ... | [] | [] | [
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"http://www.youtube.com/watch?v=dBnniua6-oM"
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[],
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"http://www.youtube.com/watch?v=dBnniua6-oM"
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efp1sq | Legality of political paramilitary organizations in the Weimar Republic | I have been reading the "Rise and Fall of the Third Reich" by William Shirer. Obviously the SA played a huge role in the political ascent of the NSDAP. However, I don't quite understand the legality of these different paramilitary organizations attached to political parties, not only limited to the NSDAP (e.g. the Rote... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/efp1sq/legality_of_political_paramilitary_organizations/ | {
"a_id": [
"fc36ymj"
],
"score": [
8
],
"text": [
"Hey there, I wrote an answer which goes into more detail about the paramilitary organisations which you can find [here](_URL_0_).\n\nIn terms of legality, the organisations were broadly tolerated until they stepped over the line. Smaller groups s... | [] | [] | [
[
"https://old.reddit.com/r/AskHistorians/comments/cqk4sy/lawful_political_violence_during_hitlers_rise_to/"
]
] | |
5jk16p | Why couldn't Austria-Hungary take Russia during the WWI? | Seeing how Russia was fighting a civil war at the time which was wrecking its military, wouldn't it have been relatively easy for Austria-Hungary to march in and take Moscow? Was Russia still stable enough during this period to fend off the attackers? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5jk16p/why_couldnt_austriahungary_take_russia_during_the/ | {
"a_id": [
"dbgu6ub"
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"text": [
"Your chronology and facts are off here. Although it is difficult to pin down an *exact* start date for the Russian Civil War, it roughly started in November/December 1917 and only really began in earnest the following year. The Russian Army had b... | [] | [] | [
[]
] | |
rmvh1 | Is it possible to control a nuclear explosion? | I don't mean in terms of a bomb, but could you create some sort of chamber to control a nuclear explosion and focus all the energy in one direction creating a thrust, if this is possible could we apply it to space shuttle's creating "nitrus" for space shuttle? Control the explosion force all the energy in one direction... | askscience | http://www.reddit.com/r/askscience/comments/rmvh1/is_it_possible_to_control_a_nuclear_explosion/ | {
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" > I don't mean in terms of a bomb, but could you create some sort of chamber to control a nuclear explosion and focus all the energy in one direction creating a thrust ...\n\nYes, this is possible, in fact there was a program to develop this ki... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Nuclear_pulse_propulsion"
]
] | |
1szbb2 | the egg grading system, ie are there grade b eggs? | Also, who decides egg grades and what are they based on? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1szbb2/the_egg_grading_system_ie_are_there_grade_b_eggs/ | {
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"\"A very fresh egg has a small air cell and receives a grade of AA. As the size of the air cell increases, and the quality of the egg decreases, the grade moves from AA to A to B. This provides a way o... | [] | [] | [
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"http://en.wikipedia.org/wiki/Egg_%28food%29#Anatomy_and_characteristics"
],
[
"http://en.wikipedia.org/wiki/Haugh_unit"
],
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] | |
z0gu5 | How did people live in a barter system? | How does a barter system actually work? I wonder how people traded before large amounts of coin was available. Was debt a big factor? How did people pay for the few specialised trades- blacksmith, wheelwright etc. Or did they do it all themselves? If so this must have been a huge problem for any improvements. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/z0gu5/how_did_people_live_in_a_barter_system/ | {
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5
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"text": [
"Yes, debt was the main method of paying for services, just like it is today. In barter economies, debts are integral to the fabric of the society; less so today because we tend to pay our debts shortly after incurring them ... | [] | [] | [
[],
[]
] | |
1h1jrc | how were measuring systems created? why are less convenient methods still being used? | How do we came to the consensus that 1 pound/1 inch/1 second/1 gram was just that?
And why, when we have more convenient methods such as the metric system, are pounds and inches still being used? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1h1jrc/eli5how_were_measuring_systems_created_why_are/ | {
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"text": [
"A lot of the imperial meausres are derived from what was practical..\n\nFor example in the middle ages, an Acre was the area that could be plowed in a day with a single yoke of an oxen...\n\nCheck out [this article](_URL_0_)... | [] | [] | [
[
"http://en.wikipedia.org/wiki/History_of_measurement"
],
[]
] | |
3nc09u | If a history textbook does not include sources/citations for it's claims, how much credit and reliability can it be given? | I'm currently taking a U.S. History class at my college and we are using the textbook, "Give Me Liberty!" Seagull forth edition by Eric Foner. Like any text book, it summarizes and makes claims about events that have taken place in the past, but it also does not make citations for them at all. Granted, in the preface t... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3nc09u/if_a_history_textbook_does_not_include/ | {
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"text": [
"Most textbooks don't give footnotes, actually. There's a widespread belief among publishers that footnotes make a book look difficult to read, and scare away students. As a result, many popular press books - and almost every textbook - don't pro... | [] | [] | [
[]
] | |
agwlx6 | How do quantum computers perform calculations without disturbing the superposition of the qubit? | I understand the premise of having multiple qubits and the combinations of states they can be in. I don't understand how you can retrieve useful information from the system without collapsing the superposition. Thanks :) | askscience | https://www.reddit.com/r/askscience/comments/agwlx6/how_do_quantum_computers_perform_calculations/ | {
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"text": [
"The quantum computer will at least once, at the end of the computation, collapse the superposition. Some algorithms may also collapse parts of the computation as an intermedia... | [] | [] | [
[],
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"http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/qmoper.html",
"https://en.wikipedia.org/wiki/Holevo%27s_theorem"
],
[
"https://quantumexperience.ng.bluemix.net/qx/experience",
"https://www.youtube.com/watch?v=5xsyx-aNClM"
],
[]
] | |
1fl9uw | Monday Mysteries | Local History Mysteries | **Previously:**
- [Fakes, Frauds and Flim-Flam](_URL_4_)
- [Unsolved Crimes](_URL_1_)
- [Mysterious Ruins](_URL_2_)
- [Decline and Fall](_URL_0_)
- [Lost and Found Treasure](_URL_3_)
- [Missing Documents and Texts](_URL_6_)
- [Notable Disappearances](_URL_5_)
**Today:**
The "Monday Mysteries" series will be focused ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1fl9uw/monday_mysteries_local_history_mysteries/ | {
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"text": [
"As a metal detectoris... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/1dslor/monday_mysteries_decline_and_fall/",
"http://www.reddit.com/r/AskHistorians/comments/1eoypm/monday_mysteries_unsolved_crimes_in_history/",
"http://www.reddit.com/r/AskHistorians/comments/1e9el2/monday_mysteries_ancient_ruins/",
"http://www.reddit.com/r/As... | [
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"http://en.wikipedia.org/wiki/Villisca_Axe_Murders"
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],
[],
[
"https://maps.google.com/maps?q=cabbagetown&rlz=1C1CHFX_enUS496US496&um=1&ie=UTF-8&a... | |
124ra7 | What kinds of evidence have to be, or should be, present if we are to determine the existence of a certain disease in the past? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/124ra7/what_kinds_of_evidence_have_to_be_or_should_be/ | {
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"text": [
"If you're going to be strict about this, you require molecular genetic evidence. Diseases rarely have a set of symptoms that are unique and therefore unmistakable, and due to evolution it's hard to be certain that a given c... | [] | [] | [
[],
[]
] | ||
18vtrl | why do i look skinnier/more attractive when i wake up in the morning? | This has probably been answered before, but Why doI look skinnier/more attractive when I wake up in the morning? Something to do with you spine not being compressed by gravity all night? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/18vtrl/eli5_why_do_i_look_skinniermore_attractive_when_i/ | {
"a_id": [
"c8if9dl"
],
"score": [
3
],
"text": [
"You're on avarage taller in the morning and you often have an empty stomach. It should be that simple."
]
} | [] | [] | [
[]
] | |
ba3wo7 | How does a nerve gas mask differ from other gas mask? | WWI mask were tested against chlorine , phosgene and mustard gas. What would be the necessary modifications to be effective against nerve gases, such as tabun and sarin? | askscience | https://www.reddit.com/r/askscience/comments/ba3wo7/how_does_a_nerve_gas_mask_differ_from_other_gas/ | {
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"text": [
"Well nerve gases are not actually gases, they are liquids with boiling point over 150°C so they hardly become gas. The point of gasmask isthat it covers your face so you dont com... | [] | [] | [
[],
[],
[],
[]
] | |
lc2eo | why bus fare (for example) keeps going up | When I was in junior high (in the early 90s), bus fare was 75 cents. Now it's $2.45.
Same goes for the cost of other small items like chocolate bars, canned drinks, newspapers, etc. The prices seem to go up by small increments every year.
Are we going to get to the point where a newspaper costs $5 and the bus costs $... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/lc2eo/eli5_why_bus_fare_for_example_keeps_going_up/ | {
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"score": [
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"text": [
"One word: Inflation",
"Simple answer is in... | [] | [] | [
[],
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"http://en.wikipedia.org/wiki/File:Components_of_US_Money_supply.svg"
],
[],
[],
[],
[],
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"http://en.wikipedia.org/wiki/File:Components_of_US_Money_supply.svg"
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35acww | is our perception of time relative to our mass? eg: an ants lifetime seems to them, the same amount of time as what our lifetime seems to us? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35acww/eli5_is_our_perception_of_time_relative_to_our/ | {
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"text": [
"There's no particular evidence to support this idea, although since it regards perception, I don't know that you could absolutely rule it out. I'd just say 'Probably not.' There are, after all, humans more than twice the mas... | [] | [] | [
[],
[]
] | ||
5g72jc | what is the difference between daydreaming and psychosis? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5g72jc/eli5_what_is_the_difference_between_daydreaming/ | {
"a_id": [
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"text": [
"Daydreaming is mostly controlled, Psychosis is mostly uncontrolled. \n\nDaydreaming you still understand what is reality and what is not. Psychosis and other mental disturbances can make those distinctions much more difficult. \n"
]
} | [] | [] | [
[]
] | ||
1p7lep | How exactly does a short-circuit damage a device? | I accidentally left my iphone turned on in my pants when I was washing them a few weeks ago. Suffice to say it was dead as dead afterwards. It got me curious. How is it that a short circuit damages the device? I feel intuitively that just because electricity is taking a different path it shouldn't damage the device, bu... | askscience | http://www.reddit.com/r/askscience/comments/1p7lep/how_exactly_does_a_shortcircuit_damage_a_device/ | {
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"text": [
"First it is important to understand how electricity works. The rate at which electricity flows through a circuit is determined by its resistance. In fact, resistors are extremely important in circuits for this very reason, b... | [] | [] | [
[],
[]
] | |
fmvf1a | how does a company know how many shares to make public? | How would a company that wants to go public decide how many shares to put out?
Why do some companies issue 100 million shares while others issue 1 billion shares?
How much percent wise does a company hold in 1 share? Why isn't there a fixed amount of shares for all companies to issue when going public? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fmvf1a/eli5_how_does_a_company_know_how_many_shares_to/ | {
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"text": [
"How many shares to make.public is based on what a company wants their stock price to be. \n\nSo the two biggest reasons that different companies have different numbers of shares when going public is that 1) not all companies have the same valuat... | [] | [] | [
[]
] | |
816icz | with bee populations being decimated why haven't we seen major shortages of any produce? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/816icz/eli5_with_bee_populations_being_decimated_why/ | {
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"https://www.chinadialogue.net/article/show/single/en/5193-Decline-of-bees-forces-China-s-apple-farmers-to-pollinate-by-hand"
],
[],
[],
[],
[
"https://youtu.be... | ||
41148d | Was the cursive script a product of the quill and inkwell system of writing? | I don't have personal experience, but it seems like there would be more ink dots and drips if you don't use cursive, that is, if you are using quill and inkwell. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/41148d/was_the_cursive_script_a_product_of_the_quill_and/ | {
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"text": [
"Someone who knows how to use a quill can use it pretty skillfully, and if it's kept in good condition and properly blotted, it won't drip. A manuscript written by a skilled scribe usually looks pretty clean. Of course, we might expect to see diff... | [] | [] | [
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4lphf1 | if a baby is born on the iis, and the mother and father are astronauts/cosmonauts from different countries (usa+russia), what is the citizenship of the baby? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4lphf1/eli5_if_a_baby_is_born_on_the_iis_and_the_mother/ | {
"a_id": [
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"score": [
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"text": [
"Citizenship is determined by the citizenship of the parents rather than the location. A person born in Germany to two English parents would get English citizenship by birth. So in your example the baby would have duel US + Russian Citizenship."
... | [] | [] | [
[]
] | ||
76skd7 | what causes chromosome abnormalities? | Besides smoking, drinking, drugs. What are other reasons of errors in cell division, and what causes it to happen? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/76skd7/eli5_what_causes_chromosome_abnormalities/ | {
"a_id": [
"dogicq9"
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"score": [
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"text": [
"There are lots, but one *major* issue that contributes to many cancers is recombination. \n\nNormally recombination isn't really a bad thing, and gives us genetic diversity. When your cells are dividing to make sperm or eggs, the chromosome you h... | [] | [] | [
[
"https://i.ytimg.com/vi/WcfAeZ0nEc8/maxresdefault.jpg"
]
] | |
1e6n75 | everyone in the world raises their arms/fists to represent success and victory. why is that? | Every culture (to my knowledge), every country, and every civilization that all developed independently of eachother, and yet everyone raises their fists or arms up in the air to proclaim 'yes!' or 'victory!'.
Why is that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1e6n75/eli5_everyone_in_the_world_raises_their_armsfists/ | {
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"It is just a human reaction. Recently, saw a video on TEd talks about body language. It sa... | [] | [] | [
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"http://www.ted.com/talks/amy_cuddy_your_body_language_shapes_who_you_are.html"
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47w4or | slow charge vs fast charge overnight | So is it better to slow charge a smart phone (nex 6p) overnight with a low amp charger (750 mah), vs plugging it in to the included fast charger(I think it's 3amps)?
Info:
I have a cheap charger that's only 750mah and it obviously takes FOREVER to charge my phone to full. Before going to bed I imagine the slow trickle... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/47w4or/eli5_slow_charge_vs_fast_charge_overnight/ | {
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"text": [
"It doesn't matter. It automatically regulates power supply to prevent anything from damaging the battery; for instance, when the phone reaches 100% it stops charging, and only starts charging when it falls below like 98%-95%."
]
} | [] | [] | [
[]
] | |
4l24o1 | what is the significance of splitting an atom, and how does it make nuclear weapons so much more devastating than conventional ones? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4l24o1/eli5what_is_the_significance_of_splitting_an_atom/ | {
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"When you \"split\" an atom, what you're doing is making the big, heavy atom into two lighter ones. \nThe curious thing is that the two lighter ones combined weigh less than the original. \nWhere did ... | [] | [] | [
[],
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978pu2 | Did slave traders struggle with morality? Did they ever question themselves, their practice and the people they were killing and enslaving? | While visiting the African-American Smithsonian in Washington, DC, I was dumbfounded by the brutality but also the loss of life. One wall in particular documents hundreds of ships, their voyages, and the ‘number of souls’ on board when they left Western Africa and when they arrived in the New World. The casualties were... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/978pu2/did_slave_traders_struggle_with_morality_did_they/ | {
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"text": [
"I hope somebody can come along and give you specific accounts but you might find this existing thread interesting about how the bible was used to justify slavery\n\n\n > _URL_0_\n\nBy /u/dubstripsquads",
"You may be fam... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3dsyyj/how_was_slavery_justifiedtolerated_by_largely/ct8k6nj/"
],
[
"https://www.biblestudytools.com/classics/newton-posthumous-works/thoughts-upon-the-african-slave-trade.html"
]
] | |
1slbze | how do solid state devices store information | I Understand how HDDs work along with CD's, DVD's, and Floppy disks, but how do things like flash drives and SSDs store memory? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1slbze/eli5how_do_solid_state_devices_store_information/ | {
"a_id": [
"cdyquz2"
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"text": [
"[This](_URL_0_) pretty much explains it."
]
} | [] | [] | [
[
"http://computer.howstuffworks.com/solid-state-drive2.htm"
]
] | |
1pjcwb | if george washington warned us about the power of parties, how was he imagining the government to work? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pjcwb/eli5if_george_washington_warned_us_about_the/ | {
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"c... | [] | [] | [
[],
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[
"http://www.reddit.com/r/explainlikeimfive/comments/1pjcwb/eli5if_george_washington_warned_us_about_the/cd2xg1f"
],
[
"http://en.wikipedia.org/wiki/Federalist_No._10"
],
[],
[
"http://m.youtube.com/watch?v=s7tWHJfhiyo#"
... | ||
emaso4 | how do products like static guard work to reduce static cling? | I'm sitting her in my sweatshirt that has decided to be an electrical generator today and thinking, i wish I had some of that stuff that makes static charge go away.
And then I'm like, how does that stuff work, anyhow? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/emaso4/eli5_how_do_products_like_static_guard_work_to/ | {
"a_id": [
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"text": [
"When two objects bump against each other, there is a chance that electrons will jump from one object to the other. If the two objects are made from a different material, it is possible that one holds on to its electrons more tightly, so it is mor... | [] | [] | [
[]
] | |
20g7aq | Is it possible for an object to have zero kinetic energy? | I was thinking about how kinetic energy seems mostly to be a relative measurement. While mass is a constant, velocity is looked at in entirely relative terms. A car's velocity relative to the Earth, Earth's velocity relative to the sun, the sun's velocity relative to the center of our galaxy, our galaxy's velocity re... | askscience | http://www.reddit.com/r/askscience/comments/20g7aq/is_it_possible_for_an_object_to_have_zero_kinetic/ | {
"a_id": [
"cg302te"
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"score": [
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"text": [
" > Is it possible for an object to have zero kinetic energy?\n\nYes. The kinetic energy of an object is relative to the reference frame in which it is measured. This is because motion is relative to the reference frame, and [kinetic energy is ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Kinetic_energy"
]
] | |
1jiqfs | Why do we need large rockets like the Saturn V and Falcon Heavy to travel to the moon? | Couldn't we send up an empty S-IVB type rocket, then send up it's fuel, an SM, a LM and then a crewed CM and dock them all together?
Would this be more costly then having to redesign a new type of heavy rocket?
I'm surprised that even when missions to Mars are discussed the mission profiles all seem to stem from one ... | askscience | http://www.reddit.com/r/askscience/comments/1jiqfs/why_do_we_need_large_rockets_like_the_saturn_v/ | {
"a_id": [
"cbf35dm"
],
"score": [
6
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"text": [
"I don't know what you mean by a S-IVB as that's a stage of the Saturn IV. \n\nWe could use existing rockets like a Atlas V or Delta IV Heavy (both can be man rated btw). You'd probably need a handful of launches to get everything up there. After ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Falcon_Heavy",
"http://systemarchitect.mit.edu/docs/hofstetter08a.pdf",
"http://www.astronautix.com/lvs/delheavy.htm",
"http://systemarchitect.mit.edu/docs/wooster07.pdf"
]
] | |
7g4xb3 | Why does vacuum-energy exist? How can nothing have some energy? | Or maybe I'm just very confused. | askscience | https://www.reddit.com/r/askscience/comments/7g4xb3/why_does_vacuumenergy_exist_how_can_nothing_have/ | {
"a_id": [
"dqgktxb",
"dqgy7tx"
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"score": [
97,
8
],
"text": [
"Well any theory that predicts a non-zero vacuum energy also predicts that the vacuum itself has a complex non-trivial structure. Like the vacuum of quantum electrodynamics for example. It can fluctuate, it can interact, i... | [] | [] | [
[],
[]
] | |
7n2kxs | how come you can have a good or bad sleep? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7n2kxs/eli5_how_come_you_can_have_a_good_or_bad_sleep/ | {
"a_id": [
"dryk3mi",
"drykcal"
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"score": [
14,
5
],
"text": [
"Simplest answer: variance.\n\nBetter answer: there are multiple factors involved. Light sources in the room or before you go to bed mess with melatonin production, which signals your body to sleep. If you wake up in certain... | [] | [] | [
[],
[]
] | ||
ty708 | why google+ has so much fewer users than facebook. | From everything I read before it was open to the public, people seemed really happy with it, some claiming it was going to kill Facebook, and many more saying they liked it better than Facebook. But as it stands now, there are very few people who use Google+, and I was just wondering why that is. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/ty708/eli5_why_google_has_so_much_fewer_users_than/ | {
"a_id": [
"c4qpqwg",
"c4qprol"
],
"score": [
14,
2
],
"text": [
"There's a concept called the \"network effect\". Basically, the more people you have using something, the more useful it becomes. To be dead simple, people use Facebook because their friends are on Facebook. Google+ didn't ... | [] | [] | [
[],
[]
] | |
2v9kqr | Would a lower class soldier in a medieval army be rewarded or punished for killing a noble or royal? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2v9kqr/would_a_lower_class_soldier_in_a_medieval_army_be/ | {
"a_id": [
"cofvb1v",
"cogqioc"
],
"score": [
71,
5
],
"text": [
"There is no hard and fast answer to this question. Medieval warfare is difficult to define and as chaotic as warfare in any other era. Individual commanders had their own ideas about how to treat enemy combatants, or made... | [] | [] | [
[],
[]
] | ||
6qgxo8 | why does dirt on my glasses always show as a perfect circle when my eyes don't focus on them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6qgxo8/eli5_why_does_dirt_on_my_glasses_always_show_as_a/ | {
"a_id": [
"dkx69fd"
],
"score": [
9
],
"text": [
"That's an effect you get from point light sources (or shadows) being out of focus, and the shape is down to the shape of your own [pupil](_URL_0_). \n\nPhotographers use that same phenomenon in cameras, to artistic effect, and they call it \"Boke... | [] | [] | [
[
"https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Close-up_Image_of_a_Human_Iris.jpg/1126px-Close-up_Image_of_a_Human_Iris.jpg",
"https://pursuitofillumination.files.wordpress.com/2012/01/xmas_bokeh.jpg",
"http://petapixel.com/assets/uploads/2014/10/aperture1.jpg"
]
] | ||
dyuk4h | What happened to people whose homes were bombed in WWII? | I watch a lot of British TV and have long wondered what happened to people after their homes were bombed in WWII, mostly because I know that given the era (especially coming out of the depression when trust in banks was low) most people’s wealth was in “things” - their home, art, silver-wares, candelabras, etc.
I kno... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dyuk4h/what_happened_to_people_whose_homes_were_bombed/ | {
"a_id": [
"f84ajb1",
"f84b1z3"
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"score": [
218,
804
],
"text": [
"A couple of years ago I recorded some oral interviews with people who'd survived the Hull Blitz as children. I can give you an answer from their perspective although it has to be remembered that Hull was a densely popula... | [] | [] | [
[
"https://UntoldHull.org",
"https://discovery.nationalarchives.gov.uk/details/r/C1035",
"UntoldHull.org"
],
[
"https://api.parliament.uk/historic-hansard/acts/war-damage-act-1941",
"https://api.parliament.uk/historic-hansard/commons/1964/feb/12/war-damage-bill#S5CV0689P0_19640212_HOC_299"
... | |
1nxsca | eli 5: why does my iphone get slower each time a new iphone or software update comes out? | So.... Yeah. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nxsca/eli_5_why_does_my_iphone_get_slower_each_time_a/ | {
"a_id": [
"ccn1aw8"
],
"score": [
6
],
"text": [
"Because each new update uses more and more power that your phone does not have. They do this A: to advance technology and compete with other companies and B: to make you feel like your phone is slow so you go buy another"
]
} | [] | [] | [
[]
] | |
dk3pex | How Did the Myth Surrounding the Boston Tea Party Start? | I'm American, and most people I know don't realize the Boston Tea Party actually resulted from a decrease in the price of tea. They think it was from an increase the colonists were mad about because now tea costs more.
Was this a result of propaganda to portray the events differently, or did the true story fall out o... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dk3pex/how_did_the_myth_surrounding_the_boston_tea_party/ | {
"a_id": [
"f4giycz"
],
"score": [
17
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"text": [
"This is a truly interesting question! \n\n**Background:**\n\nFirst, to verify what you said, The Boston Tea Party was a response to a tax being lifted off of tea, not a new tax that was imposed on it. American Colonists had been paying taxes o... | [] | [] | [
[
"https://www.britannica.com/event/Townshend-Acts",
"https://www.mountvernon.org/library/digitalhistory/digital-encyclopedia/article/parson-weems/",
"http://founders.archives.gov/?q=This%20is%20the%20most%20magnificent%20Movement%20of%20all.&s=1111311111&sa=&r=1&sr=",
"http://ahp.ga... | |
45yyap | standard shift... why does shifting into second gear before first make going into first gear easier? | Similarly, reverse can be much easier to engage after shifting into fourth from a standstill. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/45yyap/eli5_standard_shift_why_does_shifting_into_second/ | {
"a_id": [
"d015c7q",
"d015sxv"
],
"score": [
5,
2
],
"text": [
"It won't if the gearbox isn't worn. \n\nIn the gearbox is a mechanism called the [synchromesh](_URL_0_). This brings the gears you're going to engage together up to the same speed before allowing them to slide together. \n\n... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Manual_transmission#Synchromesh"
],
[]
] | |
5wotm2 | why can the potus be caught blatantly lying, red handed, time after time, without any consequences. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5wotm2/eli5_why_can_the_potus_be_caught_blatantly_lying/ | {
"a_id": [
"debp6z0",
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"debs03q",
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"score": [
2,
16,
10,
12,
5,
2,
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"text": [
"Rs have the executive, legislative and soon the supreme court. They can do nearly anything they want for at lea... | [] | [] | [
[],
[],
[],
[],
[],
[],
[
"https://www.google.com/amp/amp.usatoday.com/story/9962817/"
]
] | ||
3nrkwc | Are there any materials that exist at a Plasma Phase at the same Temp/Pressure that any other material is a Solid? | I'm curious how any material can be at a Plasma state at the same temperature and pressure that any another material is at a Solid state.
Are their any good examples where such 2 materials can co-exist in the same environment? | askscience | https://www.reddit.com/r/askscience/comments/3nrkwc/are_there_any_materials_that_exist_at_a_plasma/ | {
"a_id": [
"cvr4mr2",
"cvradsf"
],
"score": [
2,
3
],
"text": [
"There's a field of research called plasmonics. Sounds a little bit like plasma, but it's actually about metals. What do metals have in common with plasmas? A plasma is just a neutral gas of charged particles. A metal consist... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Plasma_(physics\\)#Common_plasmas",
"https://en.wikipedia.org/wiki/Plasma_cleaning"
]
] | |
1umhvq | Who led the US mobilization of its economy for war during & before World War II? | Everytime I read a book on WW2, I keep asking myself how the US was able to convert factories, train workers, garner resources, and build new weapons with such effectiveness and quantity.
Who were these directors of the War Department (?) that were so successful at preparing the US for fighting a war on two fronts?
P... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1umhvq/who_led_the_us_mobilization_of_its_economy_for/ | {
"a_id": [
"cejkzyu"
],
"score": [
3
],
"text": [
"The Roosevelt Administration and Congress created a plethora of bureaus and offices designed to coordinate and liaise with already existing departments and bureaus of the government. The important ones were the Office for Emergency Management, th... | [] | [] | [
[]
] | |
rrp87 | What did the Romans know about the Chinese? | I got really into the history of the world in 100 objects podcast when it came out. The one take away I had was just how interconnected all these civilizations turn out to be if you look carefully. Which brings me to my question.
What did the Romans know about the Chinese?
I don't necessarily need a literally answer,... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/rrp87/what_did_the_romans_know_about_the_chinese/ | {
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"score": [
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"text": [
"And conversely, what did the Chinese know about the Romans?",
... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Romano-Chinese_relations"
],
[
"http://en.wikipedia.org/wiki/Silk_Road#Roman_Empire"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Greco-Buddhism"
],
[
"http://www.reddit.com/r/ancientrome/comments/pctsq/roman_contact_with_china/"
],
[
... | |
2upzrq | what aol actually does, in 2015? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2upzrq/eli5_what_aol_actually_does_in_2015/ | {
"a_id": [
"coalzvo",
"coan0p8",
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"coaoity",
"coaop1f",
"coar03z",
"coarlkn",
"coasech",
"coasf9f",
"coavmpe",
"coavmti",
"coavonh",
"coavv58",
"coaw6na",
"coawp03",
"coax9ym",
"coaxe2t",
"coaxfup",
"coay612",
"c... | [] | [] | [
[
"http://www.cnet.com/news/3-percent-of-american-adults-still-cling-to-dial-up-internet/"
],
[],
[
"About.me"
],
[],
[],
[
"http://help.aol.com/help/microsites/search.do?cmd=displayKC&externalId=11605"
],
[],
[
"http://www.washingtonpost.com/blogs/the-switch/wp/2014/08/07/ao... | ||
1ym71s | why are there security levels higher than the one the president of the usa has? | There are 21 security clearances above the one the President of the USA has. Why is this, considering he's the most powerful man in the world? Also, who may obtain the higher levels and what kind of jobs do they have? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ym71s/eli5_why_are_there_security_levels_higher_than/ | {
"a_id": [
"cflqxs3"
],
"score": [
4
],
"text": [
"Well... Number one, don't believe everything you read or hear. Most likely, this is not entirely accurate information. 21 levels above the President? That seems highly unlikely. So many levels? What would you need that for? Think about it f... | [] | [] | [
[]
] | |
nc8lm | When speaking why do we sometimes jumble the words of a sentence? | For example; this morning I said "That was the pregnant she got weekend."
I understand that language in itself is a complicated subject but are there any leading theories that cover this?
As a side note I remember reading Pinker having an example of never forgetting 'words' when thinking to ourself as proof that we d... | askscience | http://www.reddit.com/r/askscience/comments/nc8lm/when_speaking_why_do_we_sometimes_jumble_the/ | {
"a_id": [
"c37y8xy",
"c37y8xy"
],
"score": [
7,
7
],
"text": [
"This is called metathesis if you want to just like google search and find shit.\n\nBut basically there are a lot of theories about how exactly sentences get made, but there's a general pattern of - > vague nebulous meaning ... | [] | [] | [
[],
[]
] | |
aan5dm | What about rabies makes it to where a blood test cannot determine if an animal or person is infected? | askscience | https://www.reddit.com/r/askscience/comments/aan5dm/what_about_rabies_makes_it_to_where_a_blood_test/ | {
"a_id": [
"ecuxodd"
],
"score": [
15
],
"text": [
"The rabies virus does not circulate in the blood. It takes hold in muscle tissue, and from there goes to the nerves, and starts working along the nerve tissues. No detectable amount breaks loose to float around in the bloodstream. "
]
} | [] | [] | [
[]
] | ||
6k90e2 | Why does sand on a surface create patterns when subjected to sound waves? | I've seen plenty of amazing videos showing the strange effects of sound on both small particles and liquids. I got curious and I guess I have two questions:
1. HOW does different sounds frequencies create these seemingly structured patterns with sand?
2. Will the pattern be the same if the sand is scrambled and subject... | askscience | https://www.reddit.com/r/askscience/comments/6k90e2/why_does_sand_on_a_surface_create_patterns_when/ | {
"a_id": [
"djk7rso"
],
"score": [
3
],
"text": [
"1. For these patterns to emerge, the sound has to be confined. What you're seeing are standing waves. \n\nThe sound wave emerges from a speaker, travels through a material, encounters a boundary and is bounced back into the material (an echo). Wh... | [] | [] | [
[
"http://www.acs.psu.edu/drussell/Demos/superposition/standing.gif"
]
] | |
1o9z74 | Were there successful labor strikes among miners? | I ran across an interesting letter written by a mining engineer to his wife: "July 20, 1880. The new superintendent of H. S. Mg. Co. [Horn Silver Mining Company, Frisco, Utah] A Mr. Hill made an attempt to cut down the miners wages, resulting in a strike yesterday. The men last evening went in force and compelled them ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1o9z74/were_there_successful_labor_strikes_among_miners/ | {
"a_id": [
"ccqdrxb"
],
"score": [
2
],
"text": [
"The Comstock Mining District in Nevada had what appears to be the [first miners union](_URL_0_) west of the Mississippi (1863). The first attempt was broken by the territorial governor, but with statehood in 1864, the miners unionized again, and ... | [] | [] | [
[
"http://www.onlinenevada.org/articles/miners-unions-comstock-case-study"
]
] | |
jiwfu | Since Alan Turing's time, how much closer are we to making machines "think"? | > "I propose to consider the question, 'Can machines think?'" Since "thinking" is difficult to define, Turing chooses to "replace the question by another, which is closely related to it and is expressed in relatively unambiguous words." Turing's new question is: "Are there imaginable digital computers which would do ... | askscience | http://www.reddit.com/r/askscience/comments/jiwfu/since_alan_turings_time_how_much_closer_are_we_to/ | {
"a_id": [
"c2chvj2",
"c2ckv9l",
"c2chvj2",
"c2ckv9l"
],
"score": [
3,
3,
3,
3
],
"text": [
"Not very, by that definition. We've made lots of progress in artificial intelligence, but to my knowledge no computer has ever successfully passed a Turing test.",
"What an exc... | [] | [
"http://en.wikipedia.org/wiki/Turing_test"
] | [
[],
[
"http://cleverbot.com"
],
[],
[
"http://cleverbot.com"
]
] | |
91x3ej | Why did so many people move to Rhodesia after UDI and during the war? | I know that a lot of them didn't stay for longer than 2-3 years, but still, immigrants kept coming all the way until the late years of the war. White Rhodesian men were subject to a hard conscription in the middle of a war, both of which didn't exist back in England. Furthermore, reservist call-ups were very frequent, ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/91x3ej/why_did_so_many_people_move_to_rhodesia_after_udi/ | {
"a_id": [
"e3235sr"
],
"score": [
3
],
"text": [
"There are a number of assumptions to address in the question, so there are a variety of points to make in an answer.\n\nFriction with Britain and the breakup of the Federation of Rhodesia and Nyasaland was in the early 1960s. The Unilateral Decl... | [] | [] | [
[
"https://www.jstor.org/stable/483748"
]
] | |
1pudqa | how do celebrities manage social media accounts with millions of followers? | I am aware that not all celebrities actually manage the official accounts that are titled after them, but unless I am mistaken, some of them actually do own the accounts and post to them daily.
For example, Snoop Dogg(Lion) has 2,300,000 followers on Instagram. He frequently posts pictures of him with friends, selfie... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pudqa/eli5_how_do_celebrities_manage_social_media/ | {
"a_id": [
"cd64xoc"
],
"score": [
8
],
"text": [
"You can turn notifications off. "
]
} | [] | [] | [
[]
] | |
2h07at | why does mega download your file into your local cache and then save it, as opposed to downloading through your browser's download manager? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2h07at/eli5_why_does_mega_download_your_file_into_your/ | {
"a_id": [
"cko6g9t"
],
"score": [
85
],
"text": [
"It is *probably* because the file stays encrypted on the server. Mega downloads the file onto your computer and at the same time it is decrypting the file so when it is done downloading/decrypting, You can tell the browser where you want it save... | [] | [] | [
[]
] | ||
d8kdr0 | How absolute was the reign of kings during the Middle Ages? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/d8kdr0/how_absolute_was_the_reign_of_kings_during_the/ | {
"a_id": [
"f1bmt64"
],
"score": [
13
],
"text": [
"Hello !\n\nI'll try to answer the question, even though it's a very broad one. As a French who studied medieval French politics and warfare, I'll be mainly focused on France.\n\nShort answer is : it depends. It depends on both time and place. Th... | [] | [] | [
[]
] | ||
30swua | why is the uk parliament being dissolved ahead of the general election? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30swua/eli5_why_is_the_uk_parliament_being_dissolved/ | {
"a_id": [
"cpvgy2m"
],
"score": [
3
],
"text": [
"It's a formality that signifies that each seat is now vacant and every seat is up for election. The ministers still do their respective jobs until the election results come in, they just have to put themselves forward for re-election."
]
} | [] | [] | [
[]
] | ||
amc2jf | what, why, and from whence are these super tiny flies that congregate in tiny swarms at face-level? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/amc2jf/eli5_what_why_and_from_whence_are_these_super/ | {
"a_id": [
"efkwd8e",
"efkwh6c"
],
"score": [
3,
4
],
"text": [
"Would help to know which country you are in and even which region of the country as the little bugs will vary considerably from place to place including thrips.",
"I believe they're basically gnat orgies. They all come t... | [] | [] | [
[],
[]
] | ||
uwdtm | if water makes up 70% of our earth and we have things such as water purifiers, why are we running out of drinking water on our planet? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/uwdtm/eli5_if_water_makes_up_70_of_our_earth_and_we/ | {
"a_id": [
"c4z59i6",
"c4z5ald",
"c4z6ia8",
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"c4z8sth",
"c4zakd7"
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"score": [
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3,
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"text": [
"Because large scale water purification and desalinization is expensive and inefficient. ",
"We're *not* running out.\n\nThe probl... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/File:Earth_water_distribution.svg"
],
[
"http://ga.water.usgs.gov/edu/earthwherewater.html"
],
[
"http://ga.water.usgs.gov/edu/2010/pictures/full-size/global-water-volume-large.jpg"
],
[]
] | ||
y5cg8 | What were NATO's defensive plans for a conventional invasion from the Soviet Union in the 80s? | I was wondering if there have is any information about NATO defensive plans in the 1980s if the Soviet Union launched a conventional (i.e. non-nuclear) invasion of West Germany? I recently read a fiction book involving such an invasion and I started wondering about what were the real plans. I'd like to limit the time p... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/y5cg8/what_were_natos_defensive_plans_for_a/ | {
"a_id": [
"c5sgyc7",
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"score": [
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2,
30,
3,
2,
2
],
"text": [
"Try looking at a few of the auto-biographies of generals from the period. I've not read them all, but Sir Richard Dannatt's book contai... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/The_Third_World_War:_The_Untold_Story",
"http://en.wikipedia.org/wiki/Fulda_Gap",
"http://en.wikipedia.org/wiki/Team_Yankee",
"http://en.wikipedia.org/wiki/North_German_Plain",
"http://en.wikipedia.org/wiki/NATO#French_withdrawal",
"http://en.wikip... | |
1wwo9u | What was the truth behind the Allies' accusations that the German Army committed horrific war crimes/atrocities in Belgium during World War One? | The claim that [Imperial Germany partook in a "Rape of Belgium"](_URL_0_) often comes up in conversations about WW1 and about propaganda in general. I was wondering if any of the fine people here had some knowledge to share about this topic. How much truth did the Allies' accusations contain? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1wwo9u/what_was_the_truth_behind_the_allies_accusations/ | {
"a_id": [
"cf6263i"
],
"score": [
273
],
"text": [
"This is an important and complex question. The **TL;DR** on it is \"yes, more or less, but it gets complicated.\"\n\nTo begin with, [here is a proclamation](_URL_3_) by the German General Otto von Emmich, distributed widely in Belgium in the a... | [] | [
"http://upload.wikimedia.org/wikipedia/en/1/1a/RapeOfBelgium-171105-nytribune.jpg"
] | [
[
"http://www.reddit.com/r/wwi/comments/1kuua3/photo_at_the_belgian_frontier_with_the/",
"http://www.telegraph.co.uk/history/world-war-one/10249760/Germany-intervenes-in-WW1-commemoration-debate.html",
"http://www.reddit.com/r/wwi/comments/1j86js/war_diary_of_a_belgian_soldier_aug_1731_1915_at/cbcdxwa",... | |
792n9k | why has hdr been so common in cameras for so long but is only now beginning to move into mainstream tvs, smartphones and games consoles? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/792n9k/eli5_why_has_hdr_been_so_common_in_cameras_for_so/ | {
"a_id": [
"doyoc2q",
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"score": [
3,
14
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"text": [
"HDR-photos are typically just composite images of several photos, taken with different exposures.\n\nWhat proper HDR is about, is being able display/capture truely dark and really bright parts of the image, both at the same... | [] | [] | [
[],
[]
] | ||
57mukn | if a country has birthright citizenship i.e. all those born there are automatically citizens, couldn't a woman go there on vacation/business/illegally, give birth, then the child would be a citizen giving the parent rights to stay/move there too? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/57mukn/eli5_if_a_country_has_birthright_citizenship_ie/ | {
"a_id": [
"d8t7r32",
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"score": [
10,
5,
5,
2
],
"text": [
"Contrary to popular belief, if an illegal immigrant has a kid in the US, they're still at risk for deportation if caught, in which case the child is sent back with them.\n\nAlso, ... | [] | [] | [
[],
[],
[
"https://en.m.wikipedia.org/wiki/Birth_tourism",
"https://en.m.wikipedia.org/wiki/Anchor_baby",
"http://vancouversun.com/news/local-news/b-c-aware-of-26-baby-houses-as-birth-tourism-from-china-booms"
],
[
"https://en.m.wikipedia.org/wiki/Anchor_baby"
]
] | ||
32mrgs | how do professional sports teams turn a profit? | I live in South Florida and I'm currently watching the Marlins game and I'm thinking "How does a team like this stay alive?".
Here are some numbers I'm looking at:
* The [payroll](_URL_0_) for the players alone for 2015 is : $85,531,500
* The [average](_URL_2_) attendance for 2014 was: 20,997
* The [average](_URL_1... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32mrgs/eli5_how_do_professional_sports_teams_turn_a/ | {
"a_id": [
"cqcnapp",
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"score": [
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2,
2,
2,
3,
2,
2
],
"text": [
"You forget money from licensing, clothes, hats, figurines, etc. Plus advertising at the stadium. Sales of the priv... | [] | [
"http://espn.go.com/mlb/team/salaries/_/name/mia/miami-marlins",
"http://www.statista.com/statistics/203469/mlb-average-ticket-price-for-florida-marlins-games/",
"http://espn.go.com/mlb/attendance"
] | [
[],
[],
[],
[],
[],
[],
[
"http://www.fangraphs.com/library/business/revenue-sharing/"
]
] | |
3prj9j | Why have Jews been expelled in so many countries? | I seen what Netanyahu said about Hitler only wanting to expel the Jews and that got me thinking, i had known about the Alhambra Decree where in Spain they were Expelled.
So then i googled 'where have jews been expelled from' and i got [this](_URL_0_)
So i want to know how accurate that video is and why they have be... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3prj9j/why_have_jews_been_expelled_in_so_many_countries/ | {
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"score": [
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1076,
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30
],
"text": [
"As a piggyback question can I ask if Jews have faced persecution in India? I visited an old synagogue in Cochin, India a couple of years back and they ha... | [] | [
"https://www.youtube.com/watch?v=Kr9fyxUgkok"
] | [
[],
[
"https://en.wikipedia.org/wiki/Jewish–Roman_wars",
"https://en.wikipedia.org/wiki/Blood_libel"
],
[],
[],
[]
] | |
1jihja | why is it legal to drink 1 beer and then drive, but illegal to drink 1 beer while driving? | I understand that you aren't "allowed" to drink beer while driving due to the "open container" law, but what is the reasoning behind this? You'd have just as much alcohol in your system either way. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jihja/eli5_why_is_it_legal_to_drink_1_beer_and_then/ | {
"a_id": [
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"cbff3tt",
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"score": [
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4,
6,
2,
2
],
"text": [
"I always figured it was because it's not very practical to pull someone over and ask,\"Is that your first beer? Okay good, just checking. Have a nice day.\"\... | [] | [] | [
[],
[],
[],
[],
[]
] | |
35aaqj | why do dogs (and foxes) like balls so much? | See this: _URL_0_
The fox went for the ball. It isn't domesticated, so it's not been taught.
Thanks in advance. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35aaqj/eli5_why_do_dogs_and_foxes_like_balls_so_much/ | {
"a_id": [
"cr2hox8"
],
"score": [
2
],
"text": [
"It's part of an old instinct to chase small quick animals. They are naturally attracted to things that are small and move quickly and their natural instinct is to chase them"
]
} | [] | [
"http://www.reddit.com/r/gifs/comments/358jo5/baby_fox_practicing_its_sneak_attack/"
] | [
[]
] | |
65uvqm | please. how do you milk an almond to make almond milk? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/65uvqm/eli5_please_how_do_you_milk_an_almond_to_make/ | {
"a_id": [
"dgdd0hf",
"dgdo5yo"
],
"score": [
5,
2
],
"text": [
"With a screw press. Roughly chop, then sqeeze them like olives or peanuts to get the moister out. The remaining paste can be used as a thickening agent.",
"What Druid posted about the press is correct but typically they ... | [] | [] | [
[],
[]
] | ||
9x3btd | how does gps jamming work? like what the russians did during the recent nato exercise. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9x3btd/eli5_how_does_gps_jamming_work_like_what_the/ | {
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"e9q0gp3"
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"score": [
29,
2,
6,
2
],
"text": [
"The same as normal jamming, they sent out a bunch of signals on the frequency that GPS satellites use to confuse the receivers- like trying to hear a code someone is telling you(T... | [] | [] | [
[],
[],
[],
[]
] | ||
nj984 | what is wireless spectrum scarcity and why is it a problem now? | AT & T cited wireless spectrum scarcity as the reason it wanted to acquire T-mobile. Verizon is also buying smaller companies to secure more wireless spectrum. What puts strains on this spectrum and why is it so scarce right now? Is wireless spectrum the same thing as the frequency bands (like AT & T running on 850 MHz... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/nj984/eli5_what_is_wireless_spectrum_scarcity_and_why/ | {
"a_id": [
"c39jcho",
"c39jcho"
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"score": [
7,
7
],
"text": [
"[this](_URL_1_) gives you a great explanation, but i'll give you the TLDR\n\nSpectrum is allocated from 3 kHz to 300 GHz. Basically different devices require a certain amount of bandwidth to send signal. When you create 4G (... | [] | [] | [
[
"http://upload.wikimedia.org/wikipedia/commons/4/45/United_States_Frequency_Allocations_Chart_2003_-_The_Radio_Spectrum.jpg",
"http://en.wikipedia.org/wiki/Spectrum_management"
],
[
"http://upload.wikimedia.org/wikipedia/commons/4/45/United_States_Frequency_Allocations_Chart_2003_-_The_Radio_Spect... | |
2c4s5j | why does my back itch if i'm not wearing a shirt, but nothing else on my bare body does? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2c4s5j/eli5_why_does_my_back_itch_if_im_not_wearing_a/ | {
"a_id": [
"cjbxrgd",
"cjc20p0"
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"score": [
6,
5
],
"text": [
" > Looked it up and didn't really find anything\n\n\nObviously you didn't try WebMD... it's cancer, definitely cancer.",
"Not an expert at all, but I read that some evolutionary psychologists believe that the reason you ... | [] | [] | [
[],
[]
] | ||
gno54 | Are Pharma companies evil like everyone says? | I think you must have heard the stereotype of pharma companies being evil:
Wont research a cure but will research a treatment they can keep you on for life, so they can leach your money
Wont research antibiotics even though we desperately need them
Will only find cures for western problems
... The list is endless... | askscience | http://www.reddit.com/r/askscience/comments/gno54/are_pharma_companies_evil_like_everyone_says/ | {
"a_id": [
"c1oy85r",
"c1p1jtl"
],
"score": [
3,
2
],
"text": [
"You are asking a loaded question. A company is a group of people, policies, etc. I'm curious as to what criteria you would weigh in making a determination if a company is 'evil'?",
"Pharma is just a company, like any o... | [] | [] | [
[],
[]
] | |
5xzxa7 | why can we see faraway light source (e.g. cars, lamps, stars) clearly when it doesn't seem to illuminate my position? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5xzxa7/eli5_why_can_we_see_faraway_light_source_eg_cars/ | {
"a_id": [
"dembx3o"
],
"score": [
3
],
"text": [
"The difference is this: For you to see light, the light has to be strong enough to reach your eye and produce a reaction there. For it to illuminate you, it would have to reach you, scatter off you, reach someone else's eye, and produce a reactio... | [] | [] | [
[]
] | ||
79z79x | Were the pyramids really gold capped? | I've been playing a lot of AC: Origins recently and I see most of the pyramids are capped with gold, I've also seen this referenced in other movies and media (I.e. The Mummy)
I was wondering if this is true, and how do we know? Saying as even the oldest photos don't show any gold on top | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/79z79x/were_the_pyramids_really_gold_capped/ | {
"a_id": [
"dp68sya"
],
"score": [
5
],
"text": [
"When it first came out, someone asked if the pyramids would still have caps at that time. [So I hope this answer is at least partially useful, though no doubt we have other ancient accounts that are older.] (_URL_0_) I'm not sure what the last m... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/6h11h4/the_new_assassins_creed_game_is_set_in_ptolemaic/"
]
] | |
2v15bd | do people who hear for the first time, after something like getting hearing implants, know what the other people are saying? | They may be able to still read the lips of the person who is talking to them, but wouldn't it all really just be meaningless sound if you heard it for the first time? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2v15bd/eli5_do_people_who_hear_for_the_first_time_after/ | {
"a_id": [
"codkub2",
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"score": [
7,
7
],
"text": [
"When the senses are developing there is a time called the [critical period](_URL_0_) in which sensory neurons physically become associated with certain parts of the brain, with the result being that different functions can b... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Critical_period#Auditory_Processing"
],
[]
] | |
5ypew0 | How successful were the programs of forced sterilization of Native American women? | I live in an area where these programs were carried out. There aren't many native americans left here, even though this is an area where you would expect to find a lot of them; its mostly white.
No one locally ever talks about the programs locally, except for every now and then a retired (and I think dead) local doct... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5ypew0/how_successful_were_the_programs_of_forced/ | {
"a_id": [
"detpj77"
],
"score": [
4
],
"text": [
"So from the context of your post, I feel like you're asking this sincerely. I'd like to start out by saying \"successful\" isn't a good word to use. Perhaps it wasn't your intention, but using the word \"success\" carries with it a connotation of... | [] | [] | [
[
"https://faculty.utep.edu/LinkClick.aspx?link=lawrence.pdf&tabid=19869&mid=71730",
"https://cbhd.org/content/forced-sterilization-native-americans-late-twentieth-century-physician-cooperation-national-",
"http://www.angelfire.com/folk/bigbaldbob88/MeinKampf.pdf",
"https://www.reddit.com/r/... | |
7tlrg1 | Why were guns created in Europe, instead of Asia? | As I understand, gunpowder was invented/discovered in China, before being transported west to Europe, where it was employed in warfare quickly, leading to cannon and hand guns and all the rest. Why did these innovations not take place in Asia? I understand that some Asian cultures had, sorts of hand guns and small cann... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7tlrg1/why_were_guns_created_in_europe_instead_of_asia/ | {
"a_id": [
"dtdqmcl"
],
"score": [
29
],
"text": [
" > Why did these innovations not take place in Asia?\n\nThey did. It isn't that gunpowder made it to the West, and then cannons and handguns were invented in the West, but gunpowder made it to the West because it was already being used in guns.... | [] | [] | [
[]
] | |
7e2gz2 | Why are math and physics considered liberal arts subjects? | Small liberal arts colleges often seem to have good math and/or physics programs, whereas very closely related STEM fields are not present at all. How did this come to be? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7e2gz2/why_are_math_and_physics_considered_liberal_arts/ | {
"a_id": [
"dq20oue"
],
"score": [
10
],
"text": [
"Liberal arts does not mean \"humanities\" as opposed to \"sciences.\" The term, for one thing, long predates the entry of \"science\" into the western vocabulary. The *artes liberales*, where *ars* means \"skill\" (as is usual; Hogwarts isn't te... | [] | [] | [
[]
] | |
3yuxhw | How do we know how organic molecules look like, and how do we also know how reaction mechanisms proceed? | So this is a question that has always intrigued me after taking courses such as Organic Chemistry.
I understand that we have developed many techniques to determine the structure of a molecule (NMR, X-Ray Crystallography, etc) but when I looked at examples of these techniques being performed I still found it confusing... | askscience | https://www.reddit.com/r/askscience/comments/3yuxhw/how_do_we_know_how_organic_molecules_look_like/ | {
"a_id": [
"cyib7fh",
"cyhke1i"
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"score": [
2,
3
],
"text": [
"Mechanisms are indeed hypothetical in principle, but they get their scientific confirmation via kinetics. For example, if you suppose a reaction to proceed as an [SN1](_URL_0_) you will measure a first-order kinetic evolutio... | [] | [] | [
[
"https://en.wikipedia.org/wiki/SN1_reaction"
],
[]
] | |
xqgio | why do some men's button-up shirts have the last buttonhole horizontal while the rest are vertical? | I was just doing some laundry and noticed that the bottom buttonhole on some of my shirts are horizantally stitched while the rest of the buttonholes are vertically stitched. What's the reason for this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/xqgio/eli5_why_do_some_mens_buttonup_shirts_have_the/ | {
"a_id": [
"c5ooybu",
"c5oqe9m",
"c5otqnh"
],
"score": [
89,
5,
5
],
"text": [
"Stress concentration. \n\nButtonholes are weakest along their long dimension. If you pull on that vertical buttonhole, it will want to rip in the corner of the buttonhole. The lowest button is usual... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Shirt_garter"
],
[],
[]
] | |
358hfe | How important were Special Forces in WW2? | I've heard many stories. For example the O.S.S. would disrupt Nazi transportation, under water demolition teams that paved the way for ships on DDay. And the most insane story was a Special Forces team sent out to the bitter icy cold in the middle of some mountains to destroy Hitler's "heavy water" facilities in order ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/358hfe/how_important_were_special_forces_in_ww2/ | {
"a_id": [
"cr2608i",
"cr2kc4p",
"cr2lph7"
],
"score": [
10,
7,
2
],
"text": [
"Black and Green Ops are really hard to rate in such a manner. In WWII in specific, the line between Black/Green/Regular Operations became intensely blurred as well. Many formations that could conduct a... | [] | [] | [
[],
[],
[
"http://www.amazon.com/Spec-Ops-Studies-Operations-Practice/dp/0891416005/ref=sr_1_10?ie=UTF8&qid=1431098532&sr=8-10&keywords=spec+ops"
]
] | |
2bvn7d | How is a Damping Coefficient Interpreted in Equations Concerning Harmonic Motion? | Hello /r/askScience. I'm just posting what is probably a very simple question that I had while working some problems in a Differential Equations class. I'm an engineering student and Diff. Eq. was my last mathematics requirement, but my first course in physics doesn't start for another month, so although I have no prob... | askscience | http://www.reddit.com/r/askscience/comments/2bvn7d/how_is_a_damping_coefficient_interpreted_in/ | {
"a_id": [
"cj9hvvc",
"cj9n5tx"
],
"score": [
3,
2
],
"text": [
"I think the phrase should be \"with resistance proportional to instantaneous velocity\". \n\nOne way of commonly modelling drag or resistance is to assume that the resistance an object feels is linearly proportional to it's ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Drag_(physics)#Very_low_Reynolds_numbers:_Stokes.27_drag"
],
[]
] | |
21m396 | How does Morocco get the honor of being America's first ally, yet we were in cahoots with France during the Revolutionary war? | In a US Navy manual it asked a question "Which country was the first one to recognize America's Stars and Stripes?". The answer being France.
Anyway, I read a book about the history of Islam in America, and it said that Morocco was the first nation to recognize the US as a nation. I googled the Morocco thing, and it... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/21m396/how_does_morocco_get_the_honor_of_being_americas/ | {
"a_id": [
"cgedbpk"
],
"score": [
3
],
"text": [
"Morocco's early relations with the US were actually somewhat mixed. [Michael Oren writes](_URL_2_) that the ruler of Morocco at the time, Sidi Muhammad bin `Abdallah, \n\n > claimed to have been the first monarch to have recognized American ind... | [] | [] | [
[
"https://en.wikipedia.org/wiki/American_Legation,_Tangier",
"https://en.wikipedia.org/wiki/Moroccan%E2%80%93American_Treaty_of_Friendship",
"https://en.wikipedia.org/wiki/Power,_Faith_and_Fantasy"
]
] | |
41a8tm | how do herbivorous animals that birth only one offspring at a time, maintain higher populations than their predatory counterparts that birth multiples in a litter? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/41a8tm/eli5_how_do_herbivorous_animals_that_birth_only/ | {
"a_id": [
"cz0qpuh"
],
"score": [
4
],
"text": [
"because plants are a more common form of food and requires less energy to collect. predators have to compete with eachother to survive and most of the time an entire litter doesn't survive"
]
} | [] | [] | [
[]
] | ||
jbqal | What happens to the movement areas in the brains of paralyzed individuals? | I read somewhere that in blind individuals, the brain regions normally associated with vision can be 'taken over' and used for hearing or other tasks. Does a similar thing happen to the brains of paralyzed individuals? Could this lead to paralyzed individuals having superior compensatory abilities, (like mental visuali... | askscience | http://www.reddit.com/r/askscience/comments/jbqal/what_happens_to_the_movement_areas_in_the_brains/ | {
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"score": [
3,
3,
2,
2,
3,
2,
3,
3,
2,
2,
3,
2
],
"text": [
"Also... | [] | [] | [
[],
[],
[
"http://thebrain.mcgill.ca/flash/i/i_06/i_06_cr/i_06_cr_mou/i_06_cr_mou_1b.jpg"
],
[],
[
"http://www.ncbi.nlm.nih.gov/pubmed/15451368"
],
[],
[],
[],
[
"http://thebrain.mcgill.ca/flash/i/i_06/i_06_cr/i_06_cr_mou/i_06_cr_mou_1b.jpg"
],
[],
[
"http://www.ncbi.nlm.ni... | |
1t98ks | Where did the sugar molecules in DNA and RNA come from originally? | askscience | http://www.reddit.com/r/askscience/comments/1t98ks/where_did_the_sugar_molecules_in_dna_and_rna_come/ | {
"a_id": [
"ce5mwqt"
],
"score": [
51
],
"text": [
"Good question. These days, the sugar molecules in DNA and RNA (called ribose in the case of RNA; deoxyribose in the case of DNA) come from the human body. They are produced inside our cells using energy from food.\n\nBefore there were human bodi... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Formose_reaction"
]
] | ||
1j80uk | What would need to change or evolve in order for us to be able to see light outside of the visible spectrum with our naked eye? | askscience | http://www.reddit.com/r/askscience/comments/1j80uk/what_would_need_to_change_or_evolve_in_order_for/ | {
"a_id": [
"cbc14r6"
],
"score": [
6
],
"text": [
"The molecules that absorb specific colors/wavelengths of light are found in the cone and rod cells of the retina. They are called opsins or [photopsins](_URL_0_) for the color proteins in the cone cells and [rhodopsins](_URL_3_) for the black/whi... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Photopsin",
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2855400/",
"http://www.ncbi.nlm.nih.gov/pubmed/17251489",
"http://en.wikipedia.org/wiki/Rhodopsin"
]
] | ||
2cpidg | what is actually going on when water "opens up" whiskey? | You read the advice to add a little water to a glass of whiskey to "open up" the taste. I've noticed the difference, but of course I can't be sure that's not just because I was looking for it. But assuming it does make a difference, is anything going on besides simple dilution--any kind of chemical changes? If not, doe... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2cpidg/eli5_what_is_actually_going_on_when_water_opens/ | {
"a_id": [
"cjhq8b0",
"cjhr1aw",
"cjhw94k",
"cjhzkad"
],
"score": [
29,
3,
2,
10
],
"text": [
"It's dilution, pure and simple.\n\nBecause most whiskey has high alcoholic content, there is likely to be some \"burn\" in the taste or smell. By adding some water, you dilute th... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Absinthe",
"http://en.wikipedia.org/wiki/Cis-3-methyl-4-octanolide"
]
] | |
3sdnzu | Why Delta-V and not Acceleration? | I hear the term Delta-V from rocket scientists a lot. If I recall from my University Physics 101 course, the change in velocity with respect to the change in time is called Acceleration.
So why does the Rocket Science Community use the term Delta-V instead of just saying Acceleration?
Or do I fundamentally misunder... | askscience | https://www.reddit.com/r/askscience/comments/3sdnzu/why_deltav_and_not_acceleration/ | {
"a_id": [
"cwwak7i"
],
"score": [
93
],
"text": [
"Acceleration is the measure of how quickly your velocity is changing, whereas delta-v is the total required change in velocity in order to complete a maneuver. So if in order to get to a certain orbit you will need to increase your velocity by 1... | [] | [] | [
[]
] | |
uw7ff | On the day of the Berlin Wall's construction, were citizens who were visiting the other side stuck there? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/uw7ff/on_the_day_of_the_berlin_walls_construction_were/ | {
"a_id": [
"c4z3o9h",
"c4zryhx"
],
"score": [
26,
3
],
"text": [
"No, because they were legally citizens of West Germany, and could therefore leave at will.\n\nSome East Germans who were in the West at the time decided to stay there, though.\n\nSee [here](_URL_1_), [here](_URL_3_) and [he... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Conrad_Schumann",
"http://en.wikipedia.org/wiki/Republikflucht",
"http://en.wikipedia.org/wiki/Crossing_the_inner_German_border",
"http://en.wikipedia.org/wiki/Schie%C3%9Fbefehl"
],
[]
] | ||
6e6ud9 | why does an orchestra need a chief to perform? what is the man with a stick doing? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6e6ud9/eli5_why_does_an_orchestra_need_a_chief_to/ | {
"a_id": [
"di80i8e",
"di80k56"
],
"score": [
2,
6
],
"text": [
"The conductor? He's keeping time. Imagine a group of people trying to read a book out loud together. The \"man with a stick\" makes sure everyone is literally, on the same page, by giving cues and in general maintaining a be... | [] | [] | [
[],
[]
] | ||
96ft3k | why does corn pop and expand into yummy cinema treats? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/96ft3k/eli5_why_does_corn_pop_and_expand_into_yummy/ | {
"a_id": [
"e4049yp",
"e4052km"
],
"score": [
3,
5
],
"text": [
"All grains pop with enough heat... Rice, corn even wheat, ragi etc. I don't know why they pop but they do pop if heated. ",
"The hard kernel provides resistance, allowing pressure to build then pop. \n\nThe pressure is c... | [] | [] | [
[],
[]
] | ||
1ct5cp | Could salt water be chemically desalinized? | Could salt water be chemically desalinized by adding a molecule that reacts with the dissolved sodium chloride to form a non-polar molecule that could be easily removed? | askscience | http://www.reddit.com/r/askscience/comments/1ct5cp/could_salt_water_be_chemically_desalinized/ | {
"a_id": [
"c9jsxcc",
"c9juz9h"
],
"score": [
5,
3
],
"text": [
"sure, there is no reason *a priori* that this couldn't be done. In fact, *salt metathesis* reactions are an example of this.\n\n I don't know of any practical method for doing this, however. \n\n_URL_0_\n\n\n",
"I bel... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Salt_metathesis_reaction"
],
[]
] | |
1j240a | If a magnetic field requires a moving electric charge, how does a permanent magnet work? | And even if a permanent magnet has some sort of current flowing in it, how does the current stay moving without the input of energy? | askscience | http://www.reddit.com/r/askscience/comments/1j240a/if_a_magnetic_field_requires_a_moving_electric/ | {
"a_id": [
"cbabw7s"
],
"score": [
72
],
"text": [
"First of all, a magnetic field doesn't necessarily require a movement of charge. All it needs is a change in electric flux with time.\n\nSecond of all in an atom, the electrons are \"spinning\" around the nucleus, usually in random directions. E... | [] | [] | [
[]
] | |
2nhcze | why is piracy and copyright law such a derisive issue on the internet? shouldn't artists be entitled to distribute how they want and charge what they feel is appropriate? | Edit: To clarify, why is piracy considered okay by the internet community at large? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2nhcze/eli5_why_is_piracy_and_copyright_law_such_a/ | {
"a_id": [
"cmdl3ir",
"cmdle48",
"cmdlikj",
"cmdlkqs"
],
"score": [
2,
3,
3,
3
],
"text": [
"Artists can and do distribute how ever they want. Unless they have a contract with a big studio such as Sony, whose sole purpose is to squeeze every last cent out of them.\n\nThere... | [] | [] | [
[],
[],
[],
[]
] | |
bpqce2 | What are the benefits or detriments of using Asphalt covered concrete highways? | Interstate 94, west of Chicago is concrete highway but is currently having a layer of asphalt added on top. Why? Doesn't this make for more potholes? Is this "Big Asphalt" lobbying for more resurfacing contracts? | askscience | https://www.reddit.com/r/askscience/comments/bpqce2/what_are_the_benefits_or_detriments_of_using/ | {
"a_id": [
"enzgzc6"
],
"score": [
3
],
"text": [
"Asphalt is like a protective glove on the top of the concrete. In Chicago you will notice that on the strictly concrete roadway the concrete has been worn into channels where the cars drive all day everyday. Concrete has the ability to last a lo... | [] | [] | [
[]
] | |
ovc5c | Just finished making a high temperature superconductor for solids lab. How exactly does the Meissner effect (pic inside) work? | So some of the groups in my solids lab got to make high temperature superconductors (YBa2Cu3O7 (YBCO)) this quarter. We finished ours a few days ago.
Meissner effect: _URL_0_
I'm just wondering how the Meissner effect in this situation actually works. I have a decent grasp on how the superconductor is "purging" its... | askscience | http://www.reddit.com/r/askscience/comments/ovc5c/just_finished_making_a_high_temperature/ | {
"a_id": [
"c3kbzrw"
],
"score": [
3
],
"text": [
"Although no dynamical explanation yet exist it's not actually a repulsion in the usual sense that keeps the magnet suspended. Because magnetic fields are excluded from the superconductor it locks into position. You can push the superconductor clo... | [] | [
"http://i.imgur.com/YipSS.jpg"
] | [
[
"http://www.youtube.com/watch?v=lC-3li6ScUE"
]
] | |
9b8r7m | How was the clean up of the Dunkirk beach done? | There was a post about a set of amateur pictures of Dunkirk after the evacuation and the amount of vehicles and materials left behind was astonishing. My question is how and who did the clean up and were the materials left behind every integrated into the army for anything other than scrap? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9b8r7m/how_was_the_clean_up_of_the_dunkirk_beach_done/ | {
"a_id": [
"e51cxrt"
],
"score": [
55
],
"text": [
"The Germans cleaned up, hardworking as ever.\n\nAs in need of new equipment as Germans were, they practically pressed anything intact into service. The British left behind eight divisions' worth of equipment in Dunkirk, including nearly 900 fiel... | [] | [] | [
[]
] | |
f41lzj | why does the engine of this plane rumble? | [_URL_1_](_URL_0_)
& #x200B;
Even the window shakes... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f41lzj/eli5_why_does_the_engine_of_this_plane_rumble/ | {
"a_id": [
"fhnhj0w"
],
"score": [
4
],
"text": [
"Resonance frequency, basically the structure is receiving a little push in step with how the material normally flexes since each push is perfectly timed it is like pushing someone on a swing at the perfect time when the swing has reached its peak... | [] | [
"https://youtu.be/4W9t2Bw_mqE?t=109",
"https://youtu.be/4W9t2Bw\\_mqE?t=109"
] | [
[
"https://youtu.be/l2QVRkF0d2M"
]
] | |
1dk3oq | Is the super-massive black hole at the center of the Milky Way spinning in the plane of the rest of our galaxy? Would this just be a coincidence, or does one or the other have ability to influence the other into matching it? | In all the animations I've seen of the SMBH at the center of the Milky Way, it's axis of rotation always seems to be the same as that of the surrounding galaxy. Is that just an assumption we've made, or is there some evidence to back that up? And if it does hold true, then how did that happen? Is the SMBH really massiv... | askscience | http://www.reddit.com/r/askscience/comments/1dk3oq/is_the_supermassive_black_hole_at_the_center_of/ | {
"a_id": [
"c9r2n2p",
"c9r2o1c",
"c9r4ub0",
"c9reaao"
],
"score": [
4,
8,
3,
2
],
"text": [
" > Is the SMBH really massive enough to gravitationally pull the rest of the galaxy to rotate around it? Or as it migrated (I'm assuming that's what happened?) to the center, did ... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Polar_jet"
],
[]
] |
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