q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
608qzt | why do high volt chargers fry a circuit but high amps one doesn't seem to affect it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/608qzt/eli5_why_do_high_volt_chargers_fry_a_circuit_but/ | {
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"You can think about voltage and current like water in pipes. The voltage represents the water pressure pushing it forward and the current represents, well, the water's current or flow rate. Now, you can have water moving as ... | [] | [] | [
[],
[]
] | ||
ersrrr | because fish oil is so good for you, why don’t we use it for cooking? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ersrrr/eli5_because_fish_oil_is_so_good_for_you_why_dont/ | {
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"Fish oil contains high levels of omega 3 fatty acids, which your body cannot make. Cooki... | [] | [] | [
[],
[],
[],
[],
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"https://www.cancerschmancer.org/articles/healthiest-cooking-oil-comparison-chart-smoke-points-and-omega-3-fatty-acid-ratios"
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2kruzp | why does israel insist on building settlements on lands not considered theirs and at great political cost? what internal politics drive this when the "costs" seem to be enormous? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kruzp/eli5_why_does_israel_insist_on_building/ | {
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"text": [
"Short answer, they do consider the lands theirs.",
"Short answer. It doesn't cost them much politically. They do so with almost imp... | [] | [] | [
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2frtxv | why can apex predators feel fear? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2frtxv/eli5_why_can_apex_predators_feel_fear/ | {
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"text": [
"Because apex predators can still be killed or injured.",
"Even a lion needs to fear an elephant. And an elephant needs to fear a lion. ",
"Getting wounded in a fight, even one that you win, wil... | [] | [] | [
[],
[],
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] | ||
61hgsd | Why was Stettin/Szczecin given to Poland after WW2? | Considering Stettin is west of the Oder and Stettin had a german government under soviet control first after the end of the war. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/61hgsd/why_was_stettinszczecin_given_to_poland_after_ww2/ | {
"a_id": [
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"score": [
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"text": [
"From [an earlier answer of mine](_URL_0_)\n\nThe reason why Stettin became Szczecin in 1945 is apparent when looking at the map. The core of the city, including its port facilities, was on the Western half of the Oder. Bisecting control over the ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5oze9q/how_did_szczecin_stettin_end_up_on_the_polish/"
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] | |
f15zf8 | why do fish and sharks swim together at the aquarium won't the sharks just eat them all? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f15zf8/eli5_why_do_fish_and_sharks_swim_together_at_the/ | {
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"text": [
"They only kill to eat. And, killing is a lot of work. If the aquarium staff feeds them, they aren’t hungry, don’t need to kill to eat, and don’t kill.\n\nThis is true in the wild, too, but you just don’t see it.",
"Not ... | [] | [] | [
[],
[]
] | ||
1z7iuy | what is happening atomically during a nuclear explosion? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1z7iuy/eli5_what_is_happening_atomically_during_a/ | {
"a_id": [
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"text": [
"Fission bomb? You smash two pieces of uranium together. The uranium splits, and suddenly you have a bunch of smaller atoms which have less total energy than the original uranium had. The excess energy is converted into heat,... | [] | [] | [
[],
[]
] | ||
8123da | What was the popcorn and hot dogs of the Roman coliseum? What did Romans have for snack foods while watching the events? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8123da/what_was_the_popcorn_and_hot_dogs_of_the_roman/ | {
"a_id": [
"dv00ye7",
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"score": [
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"text": [
"Not to discourage any future answers but we have actually had a few interesting thread on Roman street food:\n\n[I'm sitting here eating chips. Did the people of the Roman empire have an equivalent of such snack foods?](... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/4q6mgp/im_sitting_here_eating_chips_did_the_people_of/d4quh29/?utm_content=permalink&utm_medium=front&utm_source=reddit&utm_name=AskHistorians",
"https://www.reddit.com/r/AskHistorians/comments/3m6cyu/what_kinds_of_street_food_would_of_been_avai... | ||
332cfy | Benzodiazepines and dementia: correlation or causation? | A recent [study](_URL_0_) identified a strong link between benzodiazepine use and dementia. I'm a psychiatric nurse practitioner trying to decide whether to advise my patients to get off benzodiazepines based on this study and others. Due to the risk of dependence/addiction, I rarely start someone on these drugs but ma... | askscience | http://www.reddit.com/r/askscience/comments/332cfy/benzodiazepines_and_dementia_correlation_or/ | {
"a_id": [
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"score": [
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"text": [
"The studies have controlled for the possibility of confounding by dementia prodrome through statistical methods but I don't think anyone is convinced that that has really been ruled out. The unfortunate facts as I see them are that we don't reall... | [] | [
"http://www.bmj.com/content/349/bmj.g5205"
] | [
[]
] | |
i3uyb | Can pharmaceuticals be removed from a water supply? | Water treatment methods can remove all kinds of things from both wastewater and drinking water, but is there a way to remove pharmaceuticals from our water supplies? I'm mainly thinking of all the pills and stuff that gets flushed down toilets
Edit: I understand these are present only in extremely low concentrations... | askscience | http://www.reddit.com/r/askscience/comments/i3uyb/can_pharmaceuticals_be_removed_from_a_water_supply/ | {
"a_id": [
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"score": [
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"text": [
"Does it matter if its there? Concentration is very important. For the most part pharmacueticals only exist in our water supply in basically nonexistent quantities. That being said if you're feeling really really anal there are plenty of ways t... | [] | [] | [
[
"http://www.google.ca/url?sa=t&source=web&cd=2&ved=0CCEQFjAB&url=http%3A%2F%2Fwww.water.siemens.com%2FSiteCollectionDocuments%2FInstitutional%2FLab_Water%2FBrochures%2Faureon_high_purity_water.pdf&rct=j&q=ultra%20high%20purity%20water&ei=dI3-TZupEsPngQfehrnwCg&usg=AFQjCNFyBia8U... | |
2rrcjq | why do all bollywood movies have songs in them? | My roommate is trying to get me into them, but even the serious ones, like ones with a murderer and that... all of them have songs..
I don't get it. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rrcjq/eli5_why_do_all_bollywood_movies_have_songs_in/ | {
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"text": [
"Indian music has a built in pecking-order, not only based on the seniority or ability of musicians but also by drawing a clear distinction between vocal and instrumental music. Voc... | [] | [] | [
[],
[],
[],
[]
] | |
3xk825 | how to use a combination of tor and a vpn to download torrents safely/anonymously | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3xk825/eli5_how_to_use_a_combination_of_tor_and_a_vpn_to/ | {
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"text": [
"Any decent VPN will be good enough for torrenting. You only need both if you're doing stuff that'll get the government's attention, which torrents will not accomplish. ",
"I kn... | [] | [] | [
[],
[
"https://www.privateinternetaccess.com/",
"https://www.tunnelbear.com/"
],
[],
[
"https://www.reddit.com/r/TOR/comments/2u3j6m/why_exactly_is_torrenting_over_tor_bad_and_how/co4wcvo"
]
] | ||
1rjuuh | How was Marxist thought treated by American academia prior to the Cold War? Prior to the Russian Revolution? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1rjuuh/how_was_marxist_thought_treated_by_american/ | {
"a_id": [
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"text": [
"Prior to the probably around the late 19th century, the US and Russians were fairly close allies. They shared common enemies, France and Britain, expanded similarly, Siberia and the American west, viewed the abolishment of serfdom and slavery sim... | [] | [] | [
[
"http://i.imgur.com/gn9ZO4j.png",
"http://i.imgur.com/ccNvr1D.png",
"http://i.imgur.com/lNxGOS9",
"http://i.imgur.com/mD8uyQ4",
"http://imgur.com/a/ZDEHV",
"http://i.imgur.com/tJWYUqZ",
"http://i.imgur.com/89O1Kmz.png"
]
] | ||
28f4sf | Do all acids taste sour? | It is hard to believe, but at one time chemists characterized compounds by tasting them.
Early chemists called any compound that tasted sour an acid.
Is this true for all acids?
Were there any that were misclassified at one point? | askscience | http://www.reddit.com/r/askscience/comments/28f4sf/do_all_acids_taste_sour/ | {
"a_id": [
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"score": [
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"text": [
"My understanding of how acids and taste works is that the sour taste happens because H+ ions enter the cell and cause a membrane potential change which causes release of neurotransmitter which the brain recognizes as sour. Each of the 5 tastes (s... | [] | [] | [
[]
] | |
sycoe | What happend when someone dies? | askscience | http://www.reddit.com/r/askscience/comments/sycoe/what_happend_when_someone_dies/ | {
"a_id": [
"c4i0270"
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"score": [
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"text": [
"There is no scientific support for the idea of a \"spirit\"."
]
} | [] | [] | [
[]
] | ||
1176ax | If someone were to ejaculate much more frequently than normal, would their body produce sperm quicker, effectively having larger 'loads'? | askscience | http://www.reddit.com/r/askscience/comments/1176ax/if_someone_were_to_ejaculate_much_more_frequently/ | {
"a_id": [
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"text": [
"i think you need to rephrase the question.\n\n > If someone were to ejaculate much more frequently than normal, would their body produce **seminal fluid** quicker, effectively having larger 'loads'?",
"Hmm, a google sear... | [] | [] | [
[],
[
"http://www.mayoclinic.com/health/fertility/MC00023",
"http://en.wikipedia.org/wiki/Spermatogenesis"
]
] | ||
1vk9c1 | Why does the natural logarithm appear so much in the world? | We have all seen the natural logarithm appear in our math, chemistry, and physics classes. Is there a simple explanation to why so much of our world obeys in some way according to the natural logarithm? For example, a hanging rope obeys e^x. It is also found in Boltzmann's equation (S=k ln W), Nernst equation, etc. | askscience | http://www.reddit.com/r/askscience/comments/1vk9c1/why_does_the_natural_logarithm_appear_so_much_in/ | {
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"text": [
"All logarithms are basically equivalent; log_a(x) and log_b(x) differ only by a [factor of a constant](_URL_0_).\n\nSo we could, if we wanted, write all those formulas using base ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Logarithmic_identities#Changing_the_base"
],
[],
[],
[]
] | |
1f7o6v | How often WERE peasant revolts in the Middle Ages? Feel free to segregate early middle ages from high middle ages. | Because it seems a standard trope in many movies/series to incorporate some sort of popular uprising into the plot which seems to take on more overtones of proletariat revolution influenced by assumptions derived from marxist philosophy than what an actual medieval peasant revolt would look like.
But from my limited k... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1f7o6v/how_often_were_peasant_revolts_in_the_middle_ages/ | {
"a_id": [
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"text": [
"In Sweden, they were quite common during the era of the Kalmar Union.\n\n1434-36. The peasants rise against feudalistic policies in the Engelbrekt rising. The King is forced to agree to all their deman... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Wat_Tyler"
],
[]
] | |
3sag5f | why are chicken eggs usually sold in 6s and 12s? | I've always wondered why eggs were sold in pack of 6 and 12, but not 4, 5, 3, or 10? It just seems like an oddly large number of eggs to sell at once. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3sag5f/eli5_why_are_chicken_eggs_usually_sold_in_6s_and/ | {
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"text": [
"Dozens are a very common number of items for a great variety of trades due to their ability to be evenly divided by 2, 3, 4, and 6.\n\nI'm not sure what you are using eggs for, but it is very easy for ... | [] | [] | [
[],
[],
[]
] | |
2tsvg1 | i understand trading stocks, but what is trading bonds? how can there be a market based on loans (bonds)? what are you investing in? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tsvg1/eli5_i_understand_trading_stocks_but_what_is/ | {
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"text": [
"I am the King of Rasfertia, and I say to the financial world, \"If you pay me a dollar, I'll repay it at 3% interest for 5 years -- I'm only selling 300 dollars with this promise.\... | [] | [] | [
[],
[],
[],
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] | ||
mf56j | How big would the moon have looked 4 billion years ago? | Since the moon is moving away from the earth at ~4cm a year, how much larger would it have looked 4 billion years ago when it was first formed? | askscience | http://www.reddit.com/r/askscience/comments/mf56j/how_big_would_the_moon_have_looked_4_billion/ | {
"a_id": [
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"text": [
"The moon is receding at about 4 cm a yr right now, but the overall average for the last 2.5 billion years is less than 2 cm a yr. before that I have not seen any data.\n\ncurrently the moon ranges between 355,000 and 405,000... | [] | [] | [
[],
[]
] | |
3vez78 | why do people want to live forever? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vez78/eli5_why_do_people_want_to_live_forever/ | {
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"text": [
"Because we can't ever imagine a situation where we would want to die. Life is great and awesome and preferable to the nothingness that awaits us. Why would I ... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
21ps45 | How do they differentiate foreshocks and aftershocks from the actual earthquake? | Is the main earthquake just the largest shock? Would it be re-classified if there was a larger shock shortly following what was previously defined as an earthquake? | askscience | http://www.reddit.com/r/askscience/comments/21ps45/how_do_they_differentiate_foreshocks_and/ | {
"a_id": [
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"text": [
"In short, the answer is yes for both of your questions. In terms of what we actually measure using a seismometer, there is nothing that differentiates a foreshock, mainshock, or aftershock from each other. These are terms we apply in relation to ... | [] | [] | [
[
"http://onlinelibrary.wiley.com/doi/10.1029/2004GL019808/abstract",
"http://pasadena.wr.usgs.gov/office/kfelzer/SeisLabTalk.pdf",
"http://en.wikipedia.org/wiki/Aftershock#Aftershock_size_and_frequency_with_time"
]
] | |
5ik7fn | Why didn't more African Americans flee from the South that enslaved them to the North that had waged war to free them? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5ik7fn/why_didnt_more_african_americans_flee_from_the/ | {
"a_id": [
"db9gbbr"
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"text": [
"Enslaved people tell us again and again that slavery is horrific in just about every possible way. The violence, including sexual violence, the overwork, torture, scanty provisions (sometimes literally starvation rations and/or stuff too nasty fo... | [] | [] | [
[]
] | ||
zuo7n | How much energy would it take to accelerate the mass of Earth to 99.999% light speed? | Like a super sized Hadron Collider.
So if we sent astronauts to other stars at near the speed of light, earth could keep with time delineation, so original humans who sent the astronauts could experience the event... at a safe distance.
If possible, could a reference for the amount of energy it would take be used?
... | askscience | http://www.reddit.com/r/askscience/comments/zuo7n/how_much_energy_would_it_take_to_accelerate_the/ | {
"a_id": [
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"score": [
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4
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"text": [
"Relativistic kinetic energy is gamma-1 times mc^2 where gamma is the Lorentz factor, which is 223 in this case. 222 times mass of earth (6x10^24 kg) times c^2 is 1.2 x 10^44 Joules, or the total output of the sun over 8 bil... | [] | [] | [
[],
[]
] | |
2g27zi | How come some medication comes in gel capsules while others are large, solid pills? | Is there a reason for this? I had a conversation today and this came up. Why are some over the counter medications/vitamins so large while others are small? Is there a reason only some are gel capsules instead of all? | askscience | http://www.reddit.com/r/askscience/comments/2g27zi/how_come_some_medication_comes_in_gel_capsules/ | {
"a_id": [
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"text": [
"The most common reason is diffusion kinetics of the drug of interest. Liquids are processed by the body more quickly and the effect of the drug would then be noticed more quickly. If you want a fast acting drug, something like Nyquil, for example... | [] | [] | [
[]
] | |
a4u4mw | Why there are no blue people, green people, etc., when there are blue birds, green birds, etc.? | Mammals and even monkeys have a range of different colors and patterns. But the great apes are "monochrome". Why is that? | askscience | https://www.reddit.com/r/askscience/comments/a4u4mw/why_there_are_no_blue_people_green_people_etc/ | {
"a_id": [
"ebhsy3c",
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"score": [
139,
3
],
"text": [
" > Mammals and even monkeys have a range of different colors and patterns. \n\nYou say that, but in truth, mammals only produce two types of pigment; eumelanin (black-brown pigment) and pheomelanin (reddish-yellow) - whic... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Evolution_of_color_vision_in_primates",
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2781854/pdf/rstb20090039.pdf",
"https://www.reddit.com/r/askscience/comments/a4u4mw/why_there_are_no_blue_people_green_people_etc/ebhxy84/",
"https://en.wikipedia.org/wiki/Tyndall_e... | |
63h02n | why would you choose a trebuchet over a catapult? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/63h02n/eli5_why_would_you_choose_a_trebuchet_over_a/ | {
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"text": [
"A trebuchet is a better kind of catapult, it can throw the object farther. Why would you choose a less optimal catapult?",
"A tr... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
1sr79h | why is it we can we send a robot outside of our solar system, and exploring the surface of an entirely different planet, but the deepest oceans are unknown to us? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sr79h/eli5_why_is_it_we_can_we_send_a_robot_outside_of/ | {
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15,
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"text": [
"Space is empty. You're dealing with vaccum. \n\nThe ocean is full of water. Water crushes shit. ",
"The problem with the ocean depths is pressure - for the same reason we ca... | [] | [] | [
[],
[],
[],
[]
] | ||
1i30hs | Microhistory - what is it? | Hey everyone,
I had a question about "microhistory." I keep hearing this word everywhere, and I'm not sure I fully understand what it means. In particular, I've heard the term said a lot of Alain Corbin (who I really like). Well, what makes him a micro-historian? Is it just because he writes about not-well-known indiv... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1i30hs/microhistory_what_is_it/ | {
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"text": [
"I'd say it is difficult to provide an exact definition. Books such as Corbin's The Village of Cannibals, Carlo Ginzburg's The Cheese and the Worm, Natalie Zemon Davis's The Retur... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Annales_School"
],
[
"http://books.google.fr/books?id=4IUREWq_o3MC&printsec=frontcover&dq=the+cheese+and+the+worms&hl=en&sa=X&ei=UPHeUYTxLoeo0AXV4IDQAQ&ved=0CDAQ6AEwAA#v=onepage&q=the%20cheese%20and%20the%20worms&f=false",
"... | |
bfotoz | why are people now so much taller than they were hundreds of years ago? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bfotoz/eli5_why_are_people_now_so_much_taller_than_they/ | {
"a_id": [
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"e... | [] | [] | [
[],
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[
"https://www.bbc.com/news/world-asia-41228181"
],
[
"https://www.sciencedirect.com/science/article/pii/S0304387818300... | ||
1qlkzh | why is hairloss so hard to cure? | Many of my friends are at that age (late 20s) when thinning hairlines are really starting to manifest. It seems odd that with everything we know about biochemistry and genetics, a real treatment still eludes us.
First world problem jokes aside, is it a matter of economics? Or is the basic science just so complicated t... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1qlkzh/why_is_hairloss_so_hard_to_cure/ | {
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"text": [
"check this out. treating hair loss and tendon damage with stem cells\n_URL_0_",
"I'm really struggling with losing my hair. I'm 31 and getting really thin on top and around my crown. It's getting t... | [] | [] | [
[
"http://www.replicel.com"
],
[],
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] | |
48yv5h | how did mp4 technology improve? | I remember when mp4s started becoming commonplace rather than real media files and whatnot lets say 5 years or so ago (at least in China).
I remember for the longest time that the dialogue was incredibly quiet and one had to turn up the volume almost to max. Then suddenly an action sequence would come up and end up wa... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/48yv5h/eli5_how_did_mp4_technology_improve/ | {
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" > I remember for the longest time that the dialogue was incredibly quiet and one had to turn up the volume almost to max. Then suddenly an action sequence would come up and end up waking the neighbours... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/MPEG-4_Part_14"
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] | |
eou8s3 | The convoy system worked great against U-boats in WWI. Why did it have to be "relearned" in WWII? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/eou8s3/the_convoy_system_worked_great_against_uboats_in/ | {
"a_id": [
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"text": [
"The question describes the traditional picture of British anti-submarine efforts in the interwar period. It is ultimately derived from Stephen Roskill's *Naval Policy Between the Wars*, and to a lesser extent from Arthur Marder's monograph *The... | [] | [] | [
[]
] | ||
9vnnwk | what is it that makes some glues able to stick with plastik where others won't? | At work we have different types of glue for different tasks.
We mostly use a mixture of wallpaper adhesive and some kind of dispersion (I don't know the right word in english, but in german it's '*Kunstharzdispersion*') which works great with any form of paper, however we have one glue especially for plastic and foil... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9vnnwk/eli5_what_is_it_that_makes_some_glues_able_to/ | {
"a_id": [
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"score": [
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"text": [
"As far as I know, the glue sort of melds the plastic, so that the two peaces that have been glued together form a very strong bond! \n\nSource: Been doing a lot of model building with plastic glue! "
]
} | [] | [] | [
[]
] | |
4u29vu | why is it easier for non-native english speakers to sing, than to speak, with good pronunciation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4u29vu/eli5_why_is_it_easier_for_nonnative_english/ | {
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"That's because we repeat the sounds we hear, instead of processing the sound from scratch. \n\nImagine speaking like drawing a horse, isn't it easier to copy one from your drawin... | [] | [] | [
[],
[],
[],
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6d92p1 | How historically accurate is Ken Burns' Civil War? | I just started watching it with my dad not too long ago, and it got me thinking: just how historically accurate is it? I enjoy it very much, but I still want to know, nonetheless. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6d92p1/how_historically_accurate_is_ken_burns_civil_war/ | {
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"text": [
"u/Georgy_K_Zhukov has written a lengthy [response](_URL_0_) in [other](_URL_1_) similar [threads](_URL_2_)."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/54zv3w/ken_burns_civil_war_series_i_love_it_and_have/d86qc8w/",
"https://www.reddit.com/r/AskHistorians/comments/3x29x6/the_1990_series_the_civil_war_is_one_of_the_most/",
"https://www.reddit.com/r/AskHistorians/comments/54zv3w/ken_burns_civil_war_serie... | |
49gx68 | why does having general anesthesia feel like you blink and you're in the recovery room when normal sleep feels like time passed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/49gx68/eli5_why_does_having_general_anesthesia_feel_like/ | {
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30yha6 | Could much elements heavier that those on the periodic exist in black holes or other super massive celestial bodies? | askscience | http://www.reddit.com/r/askscience/comments/30yha6/could_much_elements_heavier_that_those_on_the/ | {
"a_id": [
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"First of all, gravity is negligible on the scale of atoms, E & M would be the force that takes over for the strong force as an atom gets too large. Second, inside a black hole is a singularity, which means no elements can e... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Extended_periodic_table"
],
[]
] | ||
kxf83 | torrents and pirate bay and their dangers | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/kxf83/eli5_torrents_and_pirate_bay_and_their_dangers/ | {
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"text": [
"torrents: You can download stuff on the internet using a special program.\n\nPirate bay: A website where you can find a list of files that can be downloaded with a special program.... | [] | [] | [
[],
[],
[],
[]
] | ||
pvqfs | Does driving a pickup truck with the tailgate lowered improve fuel efficiency? | Question is fairly simple, is there a reduction in drag significant enough to save you money on gas over an extended period? | askscience | http://www.reddit.com/r/askscience/comments/pvqfs/does_driving_a_pickup_truck_with_the_tailgate/ | {
"a_id": [
"c3ss1en"
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"score": [
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"text": [
"[Mythbusters](_URL_0_) demonstrated there was more drag with an open tail gate."
]
} | [] | [] | [
[
"http://www.youtube.com/watch?v=r3aqHbD-O9E"
]
] | |
ch33u9 | where did the original vinegar "mother" come from, if you need vinegar to make a "mother"? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ch33u9/eli5_where_did_the_original_vinegar_mother_come/ | {
"a_id": [
"euog1zq",
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"text": [
"Vinegar is Latin for “sour wine.” All you have to do is let wine go bad under certain conditions and you’ll get a mother eventually.",
"There's nothing magical about the mother, it's just the biofi... | [] | [] | [
[],
[],
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] | ||
106h1j | Why were there so few night battles during the Civil War? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/106h1j/why_were_there_so_few_night_battles_during_the/ | {
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"text": [
"Night battles could not be controlled, and navigation was extremely difficult. Large masses of armed men moving at night have little way to distinguish friend from foe without prompt communication that... | [] | [] | [
[],
[],
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] | ||
4uckzx | After the swift defeat of the majority of British forces in the Pacific, did Japan believe that Australian and New Zealand forces maybe a considerable threat in halting Japanese advance, particularly in New Guinea, New Caledonia and Fiji? | Or did the quick collapse of British forces in Malaya substantiate a belief that the Australians and New Zealanders would be easily defeated and later isolated? Would the abundance of resources, agricultural and growing manufacturing power that Australia and New Zealand possessed at the time as well as Japan over expan... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4uckzx/after_the_swift_defeat_of_the_majority_of_british/ | {
"a_id": [
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"text": [
"After the collapse of Singapore, Australia and New Zealand were effectively isolated and while their manufacturing capabilities were developing, they were not capable of supporting offensive actions in the pacific. (in fact after the supposed thr... | [] | [] | [
[]
] | |
18t0dk | Was the United States close to joining the Central Powers in World War I? | I'm currently taking a post-1945 United States history course, and my professor digressed a bit and mentioned that the United States was not destined to join the Triple Alliance in World War I.
I'm wondering how accurate that statement is, and if it is accurate how close did the United States actually come to fightin... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/18t0dk/was_the_united_states_close_to_joining_the/ | {
"a_id": [
"c8hqkv5"
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"text": [
"Well, the United States never joined the Triple Entente/Allies period (the Triple Alliance in the context of WWI usually refers to the [German, Austro-Hungarian, Italian Alliance of 1882](_URL_0_), which was actually in force until 1914 when Ital... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Triple_Alliance_(1882\\)"
]
] | |
6xyjta | why does customer service always say "high number of calls/emails" no matter what. how am i supposed to know when they actually are having a high number and not just saying it for seemingly no reason? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6xyjta/eli5_why_does_customer_service_always_say_high/ | {
"a_id": [
"dmjelr1"
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"score": [
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"text": [
"It's pre-emptive. They say it to prepare you for the worst, and hopefully they can get to you reasonably fast and you say, \"Oh, that wasn't actually that long.\"\n\nAs opposed to saying \"we'll get to you as soon as possible\", and if that take... | [] | [] | [
[]
] | |
2ppbon | How was agriculture invented? Given the low amount of usable food from pre-domestication plants and the long time it takes between planting seeds and harvest, why did the first agricultural society take it up in the first place? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ppbon/how_was_agriculture_invented_given_the_low_amount/ | {
"a_id": [
"cmyvive"
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"score": [
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"This is a question for /r/AskAnthropology since it predates the historical record by many millenia.\n\nJust to touch upon a few points briefly:\n\n* Humans were aware of the basics of agriculture (i.e., bury a seed, eventually it becomes a plant... | [] | [] | [
[]
] | ||
4puk3t | Which kings of Rome are likely to have been real? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4puk3t/which_kings_of_rome_are_likely_to_have_been_real/ | {
"a_id": [
"d4o719l"
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"text": [
"Most historians believe that the first king, Romulus, is entirely legendary. His name simply means Roman. The next six kings - Numa Pompilius, Tullus Hostilius, Ancus Marcius, Tarquinius Priscus, Servius Tullius and Tarquinius Superbus - probabl... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3hu98e/what_do_we_know_about_the_kingdom_of_rome/cuaqad4"
]
] | ||
1q8y5q | If clouds are formed by evaporation, then does global warming increase cloud formation and subsequent storm formation? | askscience | http://www.reddit.com/r/askscience/comments/1q8y5q/if_clouds_are_formed_by_evaporation_then_does/ | {
"a_id": [
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"text": [
"Clouds are not responsible for storms, clouds are caused by storms. The storms result from differences in temperature and pressure from place to place.\n\nThe impact that warming has on global evaporation rates, humidities and cloud cover is the ... | [] | [] | [
[]
] | ||
3qt7ni | if the earth rotates at an angle, why are summers at the poles not boiling hot? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qt7ni/eli5_if_the_earth_rotates_at_an_angle_why_are/ | {
"a_id": [
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"text": [
"The amount of energy from the Sun's rays that make it to the Earth depends heavily on the amount of atmosphere that the rays travel through. The more atmosphere the rays travel through, the more energy ... | [] | [] | [
[],
[],
[]
] | ||
5h9fxg | how do lines of code and text make up a game, or anything graphical overall? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5h9fxg/eli5_how_do_lines_of_code_and_text_make_up_a_game/ | {
"a_id": [
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"text": [
"As far as i know even photos taken with cameras are just a line of code going deep enough, how does it work?",
"Like all programming, there's layers of complexity. At the highest level, you have a line of code that tells... | [] | [] | [
[],
[]
] | ||
47pa94 | why do some people blink a ton? | I have met a handful of people who blink a ton when they are talking. Truly rapid blinking, I can't even try to flutter my eyelids the way they do, but they don't seem to notice it at all. I am very confused what it means/what causes it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/47pa94/eli5_why_do_some_people_blink_a_ton/ | {
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"For me, it's just a habit/tick. I get very dry eyes as well which is another reason why I... | [] | [] | [
[],
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[],
[],
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"https://www.newscientist.com/article/dn17526-synchronised-blinking-stops-viewers-missing-the-action/"
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24e4jb | do alpha particles form any compounds? | askscience | http://www.reddit.com/r/askscience/comments/24e4jb/do_alpha_particles_form_any_compounds/ | {
"a_id": [
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"text": [
"Helium forms some unstable compounds, like [hydrohelium](_URL_0_), which is basically an alpha particle bound to a proton.",
"Alpha particles are just Helium nuclei, when alpha particles are emitted in enclosed spaces th... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Helium_hydride_ion"
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161vdt | How did the United States of America get the Declaration of Independence back? | From what I understand this document was made as a letter to the king of the time basically telling the king that we are no longer a part of Britain and we are our own nation. What i'm wondering is if it was a letter how did the USA get it back, if I was the king I would be rather upset and probably discarded of such a... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/161vdt/how_did_the_united_states_of_america_get_the/ | {
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"It wasn't just made as a letter. It was publicly distributed around towns and printed to be hung on public bulletin boards. In layman's terms, it was a letter for the people of the new colonies, mainl... | [] | [] | [
[],
[],
[
"http://www.nytimes.com/1991/04/03/arts/declaration-of-independence-found-in-a-4-picture-frame.html"
]
] | |
2uk4hu | Did particles obey the same laws before the Big Bang? | askscience | http://www.reddit.com/r/askscience/comments/2uk4hu/did_particles_obey_the_same_laws_before_the_big/ | {
"a_id": [
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"text": [
"There wasn't a \"before the Big Bang\", time as we know it was created during the Big Bang. ",
"No. In science, you can only study the universe. Anything outside of the universe is outside the realm of science. There... | [] | [] | [
[],
[]
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23yasr | After 1066, what did the Anglo-Saxons think of their new Norman rulers and vice-versa? | I'm curious as to if there are any historical texts which describes the relationship between the Anglo-Saxons and their new masters. Were they resented? Were they accepted? Similarly, did the Normans regard the Anglo-Saxons as inferior and barbaric?
And ultimately, when did the line between "Anglo-Saxon" and "Norman" ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/23yasr/after_1066_what_did_the_anglosaxons_think_of/ | {
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"It’s important to understand that until at least the reign of John I, the title “King of England”, was merely an appendage to the title of leader of the [Angevin Empire](_URL_0_). William the Conqueror himself spent little t... | [] | [] | [
[
"http://en.wikipedia.org/wiki/File:Henry_II,_Plantagenet_Empire.png"
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[]
] | |
65a9vt | Do objects constantly lose a tiny bit of mass due to emitting infrared radiation because of e=mc^2? | askscience | https://www.reddit.com/r/askscience/comments/65a9vt/do_objects_constantly_lose_a_tiny_bit_of_mass_due/ | {
"a_id": [
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"text": [
"Well at equilibrium, they are absorbing just as much radiation on average as they are emitting. But yes, radiating away internal energy does decrease the mass of the object slightly."
]
} | [] | [] | [
[]
] | ||
f31ki5 | when doctors say that an antibiotic or some other medicine attacks certain types of cells, how can you make a drug target certain cells? would creating medicine to target cancer cells work to treat cancer? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f31ki5/eli5_when_doctors_say_that_an_antibiotic_or_some/ | {
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2,
2,
2,
4
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"text": [
"In order for a normal body to function cells grow and divide to create new cells. When those cells grow old in the normal cell cycle, th... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
s4l6a | Significance of the Phaistos Disk | Hey History Buffs!
I was wondering what the significance of the Phaistos Disk was. From what I understand, it poses a challenge to historians because it shows that inventions are unpredictable, dooming efforts to generalize about the history of technology. But why is this?
Any help would be appreciated!
Cheers | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/s4l6a/significance_of_the_phaistos_disk/ | {
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"text": [
"The greatest significance of the Phaistos Disc, is that it undecipherable. People have tried and tried but nothing works out right and seems forced. We can't understand it's purpose without understand... | [] | [] | [
[],
[],
[]
] | |
c55s8v | Can flow that has exited the throat of a converging-only nozzle exceed Mach 1? | Or can this condition only occur if it is contained/guided within a diverging cone? | askscience | https://www.reddit.com/r/askscience/comments/c55s8v/can_flow_that_has_exited_the_throat_of_a/ | {
"a_id": [
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"text": [
"A converging nozzle can only hit Mach 1. A converging diverging nozzle is required to get supersonic flow. The diverging portion causes the density of the fluid to drop. My compressible flow is a little weak so I'm not su... | [] | [] | [
[],
[]
] | |
33i01r | how does lung capacity increase? | Does the volume of your lungs become bigger and thus expand outward creating a bigger chest or do the cluster thingies on the inside become more efficient?
How does this work? im trying to increase my stamina and i couldn't find a solid answer | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33i01r/eli5how_does_lung_capacity_increase/ | {
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"I think there is also an effect where people learn to breathe more ef... | [] | [] | [
[],
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5jg2op | if you stick food in a vacuum sealed chamber will it decay? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5jg2op/eli5_if_you_stick_food_in_a_vacuum_sealed_chamber/ | {
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"It will still decay, just slower. The aerobic bacteria that are present in the food will die after a while, as there is no oxygen for them to grow. Some anaerobic bacteria present in the food, which don... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Chemical_decomposition"
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[],
[]
] | ||
1gu54z | why are torrents more popular than regular downloads when it comes to illegal material? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1gu54z/eli5_why_are_torrents_more_popular_than_regular/ | {
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"text": [
"Because a \"regular download\" has to be hosted by a server that somebody owns. If the copyright holder complains, it takes like five minutes to find out who owns it and go knock... | [] | [] | [
[],
[],
[],
[]
] | ||
bkryze | does bursting audio too loud ruin a speaker? | also, does the speaker gets damaged by a specific type of sound? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bkryze/eli5_does_bursting_audio_too_loud_ruin_a_speaker/ | {
"a_id": [
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"score": [
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"text": [
"Yes, in any \"Speaker\" there are two components, the driver(s) and the amp. The driver(s) are the cones that actually move back and forth at specific frequencies to produce sound (sometimes there are multiple that allow the speaker to replicate ... | [] | [] | [
[]
] | |
12t6ms | Faraday Cages: Is there a minimum width to wavelength ratio to be able to block it? | Does a faraday cage need to be thick enough to block certain spectrums of wavelengths? Is it dependant on the width or the density or conductivity of the material?
| askscience | http://www.reddit.com/r/askscience/comments/12t6ms/faraday_cages_is_there_a_minimum_width_to/ | {
"a_id": [
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"text": [
"The cage material can be as thin or thick as your material will allow; it will work fine independent of the thickness. You can also have holes in it, \na general rule is that the holes need to be no larger than 1/10 of the ... | [] | [] | [
[],
[]
] | |
1kdb16 | Why is Vimeo's HD video streaming so much better than Youtube's? | askscience | http://www.reddit.com/r/askscience/comments/1kdb16/why_is_vimeos_hd_video_streaming_so_much_better/ | {
"a_id": [
"cbnreap"
],
"score": [
5
],
"text": [
"_URL_0_\n\nA lot of Youtube's problems come from peering issues. Certain IP ranges can be blocked that help."
]
} | [] | [] | [
[
"http://bgr.com/2013/07/29/isp-video-streaming-disputes/"
]
] | ||
1wtnb9 | why when i weigh myself before and after i go number 2, i weigh more afterwards. (serious) | This has always bothered me and I'm really curious to know the answer. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wtnb9/eli5_why_when_i_weigh_myself_before_and_after_i/ | {
"a_id": [
"cf58wp6",
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"score": [
4,
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"text": [
"Sounds like your scale isn't giving consistent results. Measure your self three times in a row stepping off and on, do you get the exact same result each time? Is your floor smooth?",
"Is your scale electronic? They ofte... | [] | [] | [
[],
[]
] | |
3ztcf5 | what causes the "blaster" sound on frozen lakes and what is it called? | The best example I have is that of a cable under tension, sound [here](_URL_0_). | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ztcf5/eli5_what_causes_the_blaster_sound_on_frozen/ | {
"a_id": [
"cyowc5o"
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"score": [
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"text": [
"It's the sound of ice cracking. The entire lake acts like a compressed spring, and when it cracks, the entire lake surface acts like a giant loudspeaker.\n\n_URL_0_"
]
} | [] | [
"https://www.youtube.com/watch?v=WRWA9EUItC4"
] | [
[
"https://m.youtube.com/watch?v=_6ptf6qFSdg"
]
] | |
671qpe | donating to eradicate starvation in africa... will it ever work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/671qpe/eli5_donating_to_eradicate_starvation_in_africa/ | {
"a_id": [
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"text": [
"It's more because charities have to implement small localised solutions to problems that need massive infrastructure investments. Also, because these adverts often talk about 'Africa' rather than talking about specific count... | [] | [] | [
[
"https://www.theguardian.com/global-development-professionals-network/2014/jul/22/africa-rescue-aid-stealing-resources"
],
[]
] | ||
3v3c8e | why does pollution from china and other polluted states not drift with the westerlies to the us? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3v3c8e/eli5_why_does_pollution_from_china_and_other/ | {
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"cxjzmrt",
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"text": [
"It does. I think I read once that something like 1/4 of San Fransisco's poor air quality comes from China. Oregon and Washington get hit, too.",
"It totally does. The pollution may be dangerous in t... | [] | [] | [
[],
[],
[]
] | ||
3uadvs | why does an ipad cost $500, an ipod touch cost $200, but an iphone costs $700 (without an upgrade) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3uadvs/eli5_why_does_an_ipad_cost_500_an_ipod_touch_cost/ | {
"a_id": [
"cxd8tqe"
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"score": [
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"text": [
" > An iPod touch is the same thing as an iPhone except it doesn't make calls. \n \nIt used to be, not anymore. The current iPod Touch has a 4\" 640p screen with a 800:1 contrast rario, the 6s has a 4.7\" 750p screen with a 1400:1 contrast rat... | [] | [] | [
[]
] | ||
32zikn | how does superman exercise and build muscle? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32zikn/eli5_how_does_superman_exercise_and_build_muscle/ | {
"a_id": [
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"text": [
"Saw something the other day how he has a weightroom with kryptonite in it so it weakens him and allows him to actually work out.. Im sure someone has a better answer",
"It depends on the universe that you are talking abo... | [] | [] | [
[],
[]
] | ||
1ssqj8 | Where does all the salt eventually go that we put on roads in the winter? | Every year I see plows and salt trucks putting massive amounts of salt on the roads to melt the ice. I also see people and businesses liberally applying it to their sidewalks and driveways. Where does it all go? If it goes into our water supply, why hasn't it been tainted after so many years of doing it? | askscience | http://www.reddit.com/r/askscience/comments/1ssqj8/where_does_all_the_salt_eventually_go_that_we_put/ | {
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14,
341,
1240,
27,
142,
3... | [] | [] | [
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"http://www.pca.state.mn.us/index.php/water/water-types-and-programs/minnesotas-impaired-waters-and-tmdls/tmdl-projects/special-projects/metro-area-chloride-project/road-salt-and-water-quality.html"
],
[
"http://www.lakesuperiorstreams.org/understanding/impact_salt_2.html"
],
[
"http://en.wiki... | |
1b2so2 | Does a neutron, weighing more than a proton, have to be larger in size because it has more mass? | I'm wondering at the quantum level. The way I picture a nucleus is a very large core with protons and neutrons (the neutrons being slightly larger than the protons) with very tiny electrons orbitting it. Does it necessarily have to be this way or could the size of the atom not be set by its mass. | askscience | http://www.reddit.com/r/askscience/comments/1b2so2/does_a_neutron_weighing_more_than_a_proton_have/ | {
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"c932elx",
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"score": [
5,
3,
2
],
"text": [
"Fundamental particles have a very poorly defined \"size\". Also, there is no reason for a more massive particle to be \"larger\".",
"[The \"size\" of an atom is set by its electron configuration, no... | [] | [] | [
[],
[
"http://crystalmaker.com/support/tutorials/crystalmaker/atomicradii/resources/VFI_Atomic_Radii_sm.jpg"
],
[
"http://en.wikipedia.org/wiki/Atomic_orbital#Qualitative_understanding_of_shapes",
"http://en.wikipedia.org/wiki/Quantum_electrodynamics",
"http://profmattstrassler.com/articles-an... | |
31it33 | why do i feel physically exhausted after an argument, even if i argued calmly? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/31it33/eli5_why_do_i_feel_physically_exhausted_after_an/ | {
"a_id": [
"cq1yunl"
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"score": [
2
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"text": [
"Because any sort of conflict triggers the 'fight or flight' response.\n\n[Wikipedia] Fight-or-flight response - _URL_0_"
]
} | [] | [] | [
[
"https://en.m.wikipedia.org/wiki/Fight-or-flight_response"
]
] | ||
3mpn94 | why do we need to wash our fruit and vegetables before eating them? what exactly are we washing off? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mpn94/eli5why_do_we_need_to_wash_our_fruit_and/ | {
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5,
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"text": [
"Possibly salmonella. The exterior of fruits and vegetables are handled often and are normally quite dirty. Unlike ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | ||
1smlqd | why do materials in the earths crust group together in vains? | I know that the earth has a metallic core because the heavier elements sunk down when the earth was still a giant molten ball of fire. But wouldn't the same heat and fluidity have allowed for the diffusion and fairly even spread of elements. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1smlqd/eli5_why_do_materials_in_the_earths_crust_group/ | {
"a_id": [
"cdz905l"
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"score": [
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],
"text": [
"In any given volume of molten rock in the core of the earth there is a mixture of different elements, roughly equally distributed like sugar stirred into a cup of coffee.\n\nSometimes that molten rock is cooled - usually by being injected into a ... | [] | [] | [
[]
] | |
1si6cg | what is the basic idea behind the concept of a "rainbow universe" and what does it mean for us? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1si6cg/eli5_what_is_the_basic_idea_behind_the_concept_of/ | {
"a_id": [
"cdxtqyv"
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"score": [
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"text": [
"The basic idea is that different frequencies of light would be affected slightly differently by gravity. The rainbow comes from just that -- looking at the color of the light as well as the effect that gravity has on it.\n\nIt would be very diffi... | [] | [] | [
[]
] | ||
b71tbv | why would an overweight person not be able to eat as much as a skinny fit person? (read below) | Sorry the question is worded weridly. This subreddit is kinda bad about removing posts.
But, I (18 and overweight) can barely eat one normal sized meal before feeling super super full and my girlfriend (18 and super skinny/fit) can eat a larger meal and still be hungry. Why is this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b71tbv/eli5_why_would_an_overweight_person_not_be_able/ | {
"a_id": [
"ejpsl0n"
],
"score": [
2
],
"text": [
"How much you can eat in one sitting is based on stomach size, not body size. The fact that you have a lot more fat stored around your body has nothing to do with how big your stomach is. In fact, it probably makes it harder for you to eat massive... | [] | [] | [
[]
] | |
bf63v6 | why is it that i sometimes lose my complete sense of time and day after taking a nap? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bf63v6/eli5_why_is_it_that_i_sometimes_lose_my_complete/ | {
"a_id": [
"elbbnzv"
],
"score": [
3
],
"text": [
"When you sleep you go through different stages dictated by what are called alpha and theta waves. Being in certain stages of sleep will result in different levels of awareness upon waking up. I don’t remember what stages dictate what, but some in... | [] | [] | [
[]
] | ||
3jpuin | why do we prefer more width over more height on screens (movies, tv's, monitors, etc.)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jpuin/eli5_why_do_we_prefer_more_width_over_more_height/ | {
"a_id": [
"curbjro",
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],
"score": [
7,
2
],
"text": [
"Our eyes naturally see in a wide screen aspect ratio so wider screens fill our vision more than square ones.",
"That's how our world is arranged: The sky and ground right beneath us are both mostly featureless, so we foc... | [] | [] | [
[],
[]
] | ||
8apnhp | humans and their ancestors didn't always have civilization to make caring for one another so easy. when/why did human babys get so useless? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8apnhp/eli5humans_and_their_ancestors_didnt_always_have/ | {
"a_id": [
"dx0htgu"
],
"score": [
3
],
"text": [
"They have been in tribes and small communities for hundreds of thousands of years. Depends how you define civilization but we have pretty much always had a group of other people to help out (at least as long as we were still considered people)."
... | [] | [] | [
[]
] | ||
2k12ie | If CO2 dissolved in water is basically the same as carbonic acid, could you carbonate water by dissolving carbonic acid in it instead of using a CO2 tank? | I assume you'd need a high partial pressure for CO2 over the water, but would this otherwise work? | askscience | http://www.reddit.com/r/askscience/comments/2k12ie/if_co2_dissolved_in_water_is_basically_the_same/ | {
"a_id": [
"clh9zae",
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"score": [
3,
5
],
"text": [
"Yep, the only problem is that solid carbonic acid often comes as a sodium salt. This means that while you add fizz, you also add saltiness. This is why baking soda is not so pleasant when overused (baking soda is sodium bica... | [] | [] | [
[],
[
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3482932/"
]
] | |
4o6smr | History of military strategies | Hello askhistorians
I'm 23 years old and currently trying to become a history teacher.
I have always been interested in the history of war and I've been reading a lot about it. I have read a lot about the political and economic side of war. But I don't know anything about the tactics and strategies that where used. ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4o6smr/history_of_military_strategies/ | {
"a_id": [
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"score": [
5,
3,
5,
3,
5,
2,
2
],
"text": [
"The historian Adrian Goldsworthy has made quite a successful career out of writing (normally very good) books abou... | [] | [] | [
[
"https://www.amazon.com/Name-Rome-Roman-Empire-Phoenix/dp/0753817896"
],
[],
[],
[
"https://m.youtube.com/watch?v=FHWyffZn5-c"
],
[],
[],
[]
] | |
cra0fi | ; why do pills generally need to be kept at a certain temperature? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cra0fi/eli5_why_do_pills_generally_need_to_be_kept_at_a/ | {
"a_id": [
"ex31dv7"
],
"score": [
2
],
"text": [
"Heat typically accelerates the rate at which things degrade or break down, so keeping pills at a certain temperature reduces the likelihood and/or speed at which the active ingredient in your medicine breaks down and no longer does it's job.\n\nT... | [] | [] | [
[]
] | ||
kjxez | - what would happen to the ocean (and the earth) if all sea life was removed from the ocean. | Talking more about the effects on the oceans level and the subsequent effects on the Earth, rather than the effects on humans themselves. (but explaining that would be cool too) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/kjxez/eli5_what_would_happen_to_the_ocean_and_the_earth/ | {
"a_id": [
"c2kuum0",
"c2kuum0"
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"score": [
4,
4
],
"text": [
"Plankton in the ocean are responsible for producing most of the oxygen that is created by biological processes. Without them, there will be lots more CO2 in the atmosphere. This will probably also accelerate global warming a... | [] | [] | [
[],
[]
] | |
9ky533 | why is the majority of education based simply upon regurgitating facts and memorizing details/formulas when nothing is gained simply from memorizing them, but rather using them in a meaningful way? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9ky533/eli5_why_is_the_majority_of_education_based/ | {
"a_id": [
"e72okxi",
"e72olw6"
],
"score": [
2,
2
],
"text": [
"I'm just a burnt-out college senior sitting here late at night cramming for yet another midterm and pissed that I still have to take tests, but I'm fed up with education, at least as my experience with it has been. All I'm e... | [] | [] | [
[],
[]
] | ||
magvc | Why does my french bread go hard as a rock after 3 days? | askscience | http://www.reddit.com/r/askscience/comments/magvc/why_does_my_french_bread_go_hard_as_a_rock_after/ | {
"a_id": [
"c2zd7ev",
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"c2zd7tm"
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"score": [
2,
6,
2,
6
],
"text": [
"lack of preservatives, or rather less than store bought white bread....",
"It just dries out. Fresh bread has lots of moisture in it, but over time that moisture evaporates and... | [] | [] | [
[],
[],
[],
[]
] | ||
a2g6b0 | This post will self destruct... (what is the history behind the idea of the self destruct button?) | The "self-destruct" button is a pretty common trope in scifi, military, and spy media and is just taken as a normal precaution. Have there actually ever been (or I guess are there) places where self destruct buttons are routinely used? Do we have any historical examples of "self destruction"? When did this idea firs... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a2g6b0/this_post_will_self_destruct_what_is_the_history/ | {
"a_id": [
"eayfekj"
],
"score": [
31
],
"text": [
"Military equipment has long had some sort of process for self-destruction in order to prevent capture by the enemy. If they obtain functioning examples, not only might they press it into service with their own military, but more importantly, the... | [] | [] | [
[
"https://cdn.shopify.com/s/files/1/1343/9895/products/DSCN6870\\_1024x1024.JPG?v=1474667377",
"https://cdn.shopify.com/s/files/1/1343/9895/products/DSCN6870_1024x1024.JPG?v=1474667377"
]
] | |
1g32nc | Questions about Norse North America | As I understand it, there are a lot of theories about pre-columbian visitors to the Americas, and the only one that is wildly accepted as hard fact with hard evidence is Vikings in North America. I have a few questions about it.
What was the state of the settlements at their height? If I were an average person in one... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1g32nc/questions_about_norse_north_america/ | {
"a_id": [
"cagbmlg"
],
"score": [
7
],
"text": [
"Yipes.. these are a lot of questions! Here are a bunch of previous posts on the Norse settlement in North America that address at least some of your questions. I don't see that any touch on your first questions about the state of the settlements ... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/wecun/nonsaga_sources_describing_interaction_between/",
"http://www.reddit.com/r/AskHistorians/comments/yyut4/why_didnt_the_vikings_settle_in_north_america/",
"http://www.reddit.com/r/AskHistorians/comments/1f7efh/how_much_do_we_know_about_the_scandinavi... | |
6wxhqg | why are there no protections against a a rich person suing a poor person? why can a company sue a person and trap him for years, making him bankrupt? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6wxhqg/eli5_why_are_there_no_protections_against_a_a/ | {
"a_id": [
"dmbi7q8",
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"score": [
4,
2
],
"text": [
"Think about it: what is the purpose of suing someone? Typically, you either want to stop them from doing something that's illegal (get an injunction), or get compensation for an illegal act (a tort) they committed against yo... | [] | [] | [
[],
[]
] | ||
29dlzi | how does a wooden sailing ship work in terms of the wheel steering it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/29dlzi/eli5_how_does_a_wooden_sailing_ship_work_in_terms/ | {
"a_id": [
"cijw1h2"
],
"score": [
2
],
"text": [
"The wheel controls a rudder located underneath the ship. The rudder then displaces water allowing the ship to move freely within its surroundings."
]
} | [] | [] | [
[]
] | ||
1ltdpa | what is the invisible hand idea? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ltdpa/eli5_what_is_the_invisible_hand_idea/ | {
"a_id": [
"cc2jbxz"
],
"score": [
4
],
"text": [
"In the 1700s, people were still trying to figure out how production and consumption worked and what governments should do about it. One set of ideas, now associated with a man called Adam Smith, came up with some theories which essentially said t... | [] | [] | [
[]
] | ||
1jh7f9 | the hubble telescope | Can someone explain in simple terms how astrophysicists and astronomers can determine the distance and existence of planets/stars billions of miles away? I know the Hubble telescope takes in light which has been emitted by glowing stars but with all that power and "accuracy" how come we have a hard time determining wha... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jh7f9/eli5_the_hubble_telescope/ | {
"a_id": [
"cbemxgp"
],
"score": [
3
],
"text": [
"The farther a star is, the dimmer it appears. A star's color spectrum is a good proxy for its actual brightness, so given that and it's apparent brightness (how bright it appears), we can estimate its distance. We can also see if it's moving away... | [] | [] | [
[]
] | |
2wxbxi | Did any medieval European countries have a proper standing army, or did they all rely upon the feudal system of raising levy forces? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2wxbxi/did_any_medieval_european_countries_have_a_proper/ | {
"a_id": [
"cov5g3q"
],
"score": [
6
],
"text": [
"Yes. The Byzantines had what you could consider a \"standing army\" in their Imperial *tagmata*, elite regiments of full-time professional soldiers used for a variety of operations, including the garrisoning of strategic sites and offensive campa... | [] | [] | [
[]
] | ||
o9q9a | If we can make diet soda with zero calories, why can't we make lite beer (or any other alcohol) with zero calories? | I assume it has something to do with the unique properties of ethanol as far as producing the effects of intoxication, but it seems like we could come up with a chemical that mimics the effect just as we've come up with non-caloric chemicals that mimic the effect of sweetness. | askscience | http://www.reddit.com/r/askscience/comments/o9q9a/if_we_can_make_diet_soda_with_zero_calories_why/ | {
"a_id": [
"c3fif09",
"c3fimu6"
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"score": [
20,
2
],
"text": [
"Because alcohol in and of itself *has* calories. Ethanol goes to acetaldehyde, which then goes to acetic acid and then acetyl CoA, which can enter the citric acid cycle. There are other chemicals which can mimic some of t... | [] | [] | [
[],
[]
] | |
2i34io | Without observing the sky, is it possible to prove that the earth is rotating/orbiting? | askscience | http://www.reddit.com/r/askscience/comments/2i34io/without_observing_the_sky_is_it_possible_to_prove/ | {
"a_id": [
"ckycxaf",
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"ckysugg",
"ckz970k"
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"score": [
472,
21,
33,
10,
14,
3,
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"text": [
"In the case of the Earth's rotation, yes, for instance, a relati... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Foucault_pendulum"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Heading_indicator"
],
[
"http://en.wikipedia.org/wiki/Foucault_pendulum"
],
[
"http://en.wikipedia.org/wiki/Ab%C5%AB_Ray%E1%B8%A5%C4%81n_al-B%C4%ABr%C5%ABn%C4%AB"
],
[],
[],
[
"h... | ||
8h8rxh | Once the fate of the Mexican-American War was all but clear, was there any serious discussion amongst the Americans to annex ALL of Mexico? | I’ve heard some ridiculous statements from people saying, usually sarcastically, that we should’ve annexed all of Mexico. Well, once it was clear, with the successful capture of Mexico City in 1847, that the Mexico had lost the war, was there any serious discussion in the US government or media to actually annex all of... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8h8rxh/once_the_fate_of_the_mexicanamerican_war_was_all/ | {
"a_id": [
"dyiatm8"
],
"score": [
2
],
"text": [
"There may be more to say, but you might like to start with a discussion from the FAQ section [\"American Expansion\"](_URL_1_) (in the app: about 25% of the way down the page). [\"During Manifest Destiny why did the US not try to annex all of Me... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/2f6an0/during_manifest_destiny_why_did_the_us_not_try_to/ck6bid4/",
"https://www.reddit.com/r/AskHistorians/wiki/us_history#wiki_american_expansion"
]
] | |
m5uea | What is the closest another habitable planet could be near earth? | If there was a new planet, similar to earth that was habitable, what is the closest path they could be to earth to be viable and still capable of holding life?
Would they share an orbit with us? Be close by that we can travel back/forth with a ship? Would they have to be as far as Mars? Or would they die out because ... | askscience | http://www.reddit.com/r/askscience/comments/m5uea/what_is_the_closest_another_habitable_planet/ | {
"a_id": [
"c2ycxyn",
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"c2ydjvw",
"c2ygj7j"
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"score": [
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7,
3
],
"text": [
"The closest star is [Proxima Centauri](_URL_1_) which is 4.2 light years away. That's [about 170,000 times farther than Mars](_URL_3_).... | [] | [] | [
[
"http://www.wolframalpha.com/input/?i=4.2%20light%20years%20%2F%2062000%20km%2Fh",
"http://en.wikipedia.org/wiki/Proxima_Centauri",
"http://www.aerospaceweb.org/question/spacecraft/q0260.shtml",
"http://www.wolframalpha.com/input/?i=distance+to+proxima+centauri+%2F+distance+to+mars"
],
[
"... | |
2oajaj | Theoretically, if a brain were to be continuously transplanted into different host bodies, would it be able to survive forever? | askscience | http://www.reddit.com/r/askscience/comments/2oajaj/theoretically_if_a_brain_were_to_be_continuously/ | {
"a_id": [
"cmldszm",
"cmlrlve"
],
"score": [
27,
6
],
"text": [
"There are at least three issues:\n\n1. We've never transplanted a brain, so it's hard to answer this question even hypothetically (not theoretically, hypothetically).\n\n2. Mature brains don't produce new neurons, so you be... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Alzheimer%27s_disease"
],
[]
] |
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