q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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21v76z | With all the rumors/hype about sapphire glass in next-gen smartphones, what is the chemical difference between sapphire glass, Gorilla Glass, and "normal" glass? | askscience | http://www.reddit.com/r/askscience/comments/21v76z/with_all_the_rumorshype_about_sapphire_glass_in/ | {
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"Ordinary glass is usually [soda-lime glass](_URL_0_), which is mostly silicon dioxide (~75%), sodium oxide (~13%), calcium oxide (~10%), and minor additions of other elements. It's cheap and easy to work with, but brittle and easily shattered. ... | [] | [] | [
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"http://en.wikipedia.org/wiki/Soda-lime_glass"
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1915zh | Is it really appropriate to label the Greek settlements outside of Greece 'colonies'? | From the little I've read on the subject, it seems a little anachronistic. Is that fair, or am I nitpicking? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1915zh/is_it_really_appropriate_to_label_the_greek/ | {
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"It is an anachronism, in that I dont think the Greeks used the term (I think its latin). But colonising by planting a new settlement in the pattern of the parent settlement via a structure or system (polis) which was alien t... | [] | [] | [
[],
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fetfds | why do humans cringe? does the same response occur in other animals? | What is the reason for such a crippling reaction to uncomfortable social interactions?
EDIT: Thank for the replies so far, I am more wondering from an animal behaviour perspective. Starting to get the sense it is a form of social preservation because you can dissociate yourself from the bad thing. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fetfds/eli5_why_do_humans_cringe_does_the_same_response/ | {
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"There's a lot of things that say humans feel/think that animals can't, and they're still unsure on so much shit. We don't even underst... | [] | [] | [
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zyxod | Why did our immune systems evolve so that we need our meat cooked? (please read description) | My question, as stated above is, why do we need our meat cooked? I know it is because we need to get rid of the bacteria, but every other carnivore or omnivore does not need their meat cooked. So why does ours? Why would our immune system evolve so that we need meat to be cooked? Why would it need that extra step to be... | askscience | http://www.reddit.com/r/askscience/comments/zyxod/why_did_our_immune_systems_evolve_so_that_we_need/ | {
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"We do not need to eat our meat cooked.\n\nDoes it kill bacteria? Yes. But that is an added benefit.\n\nIf you were to eat raw meat straight of the bone r... | [] | [] | [
[],
[],
[],
[
"http://www.scientificamerican.com/article.cfm?id=cooking-up-bigger-brains"
],
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1sp329 | if 2-d and 3-d can be drawn on paper (a "3-d" object) then what is the real world and the first dimension? | Plus, what about inside black holes? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sp329/eli5if_2d_and_3d_can_be_drawn_on_paper_a_3d/ | {
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"text": [
"3D isn't drawn on paper. A 2D representation is drawn on paper.\n\n",
"It might *look* 3D because of shading and perspective, but every picture drawn on paper is 2D.",
"Your question makes me r... | [] | [] | [
[],
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3ct8az | why large companies like tyson are not charged with animal cruelty? | Even after multiple videos showing evidence of cruelty, why do companies that raise livestock and poultry in a very inhumane manner do not face legal repercussions? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3ct8az/eli5_why_large_companies_like_tyson_are_not/ | {
"a_id": [
"csyp93n",
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"text": [
"Doesn't Tyson own like 40% of the food market?",
"The correct answer: Because it isn't animal cruelty.\n\n\"Animal cruelty\" is what we call **senseless** harm to animals. People who smack their dog on the nose when it p... | [] | [] | [
[],
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] | |
jdivc | Could we build a sustainable society on Antarctica? | Ever since the McMurdoc guy's AMA (can't find it now I'm afraid) I've been ridiculously interested in Antarctica. On earth, it is in a sense the final frontier for mankind.
Having played around with the thought of colonising Antarctica in my head for a while, I thought I'd finally go ahead and ask the scientific commu... | askscience | http://www.reddit.com/r/askscience/comments/jdivc/could_we_build_a_sustainable_society_on_antarctica/ | {
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"From a practical standpoint, you just need susta... | [] | [] | [
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],
[],
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"http://en.wikipedia.org/wiki/Antarctic_Treaty"
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[],
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"http://en.wikipedia.org/wiki/Esperanza_Base"
],
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"http://pubs.aina.ucalgary.ca/arctic/Arctic26-2-149.... | |
slwnq | Which creature increases in body size most since birth? | I'm wondering if you took the ratio from the mature adult form of an animal, and divided it by it's birth form what would have the highest ratio?
Is it something huge like the blue whale, or is it some form of insect that (relatively) grows massively? Is it approximately the same for all animals?
Thanks Ask Science.... | askscience | http://www.reddit.com/r/askscience/comments/slwnq/which_creature_increases_in_body_size_most_since/ | {
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"From what I know, in terms of length the largest growth % is likely the Lion's Mane Jellyfish, which starts off as a tiny clump of cells around one millimetre in length and eventually grows to be up to... | [] | [] | [
[],
[],
[]
] | |
oxtgl | quantum particles reacting to observation | So, when you observe a particle it reacts differently as if it is aware??? what implications could this have in our own day to day lives, if any? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/oxtgl/eli5_quantum_particles_reacting_to_observation/ | {
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"text": [
"Any explanation of quantum mechanics in ELI5 will be woefully lacking in information, but I'll do my best.\n\nSome things (well, all things, on a sub-atomic l... | [] | [] | [
[],
[],
[
"http://random.irb.hr/",
"http://www.youtube.com/watch?v=DfPeprQ7oGc"
],
[
"http://www.reddit.com/r/explainlikeimfive/comments/oufmr/why_do_particles_change_when_observed/"
],
[]
] | |
65rjxg | how do "hive" applications get startup users? apps like tinder, meetup, and other social apps? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/65rjxg/eli5_how_do_hive_applications_get_startup_users/ | {
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"d... | [] | [] | [
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bm0sig | How long after clinical death, can someone be revived? | How long without damage to the body (brain, heart, etc.)? And how long before being unable to keep yourself alive (breathing by yourself, without help)? | askscience | https://www.reddit.com/r/askscience/comments/bm0sig/how_long_after_clinical_death_can_someone_be/ | {
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"text": [
"It’s quite variable, but even with good CPR and return of spontaneous circulation after only a few minutes people can have quite significant hypoxic brain injuries. If you’ve been having CPR for more t... | [] | [] | [
[],
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"https://www.theguardian.com/football/2012/mar/25/muamba-collapse-minute-by-minute"
],
[
"https://www.youtube.com/watch?v=jvRuKHeEvWM"
]
] | |
13wjk0 | A few questions on physics & particles | Hey all, I'm in 10th grade in NY so by state education law I'm required to take a Chemistry course this year. However, I'm much more interested in Physics, which is what I'll be taking next year. I've just been thinking about it and I've come across a few questions.
1.) Does light have a mass? because I've been told (... | askscience | http://www.reddit.com/r/askscience/comments/13wjk0/a_few_questions_on_physics_particles/ | {
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"1) Light doesn't have mass but it does have momentum.\n\nI have seen it as a triangle actually so yes but it seemed pretty pointless to me\n\n2) A photon is a particle of light.\n\n3) Never heard of it.\n\n4) If you do, some... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Four-momentum"
]
] | |
23hzaj | Were gestures such a big part of conversation in ancient Rome as they are in modern day Italy? | The Italians are famous for their non-verbal expressiveness, while most pop-culture depictions of Romans have them be very reserved in their gestures. Which is closer to the truth?
Also if the Romans didn't gesticulate as much as Italians do, when did the change take place? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/23hzaj/were_gestures_such_a_big_part_of_conversation_in/ | {
"a_id": [
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"text": [
"Yes, the Romans made extensive use of gesticulation in their speech, at least in their oratory and it seems in the streets as well. Cicero mentions them at some length in *De Oratore* and we have quite a lot of depictions of speakers in the proc... | [] | [] | [
[]
] | |
6z5zqd | why aren't tunnels under rivers straight? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6z5zqd/why_arent_tunnels_under_rivers_straight/ | {
"a_id": [
"dmsri9h"
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"text": [
"The earth is not consistently made up of the same thing.\n\nSome areas are made of soft rocks that aren't very stable\n\nOther areas are made of hard rocks that are incredibly hard to drill through.\n\nIt's cheaper, easier and safer to curve your... | [] | [] | [
[]
] | ||
6ccv5g | Akin to electric field, does gravitational field store energy too? | askscience | https://www.reddit.com/r/askscience/comments/6ccv5g/akin_to_electric_field_does_gravitational_field/ | {
"a_id": [
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"text": [
"Yes. There is stored in gravitational potential energy, which is why, for example, things pick up speed when they roll down hill, as they are trading gravitational potential energy for kinetic energy."
]
} | [] | [] | [
[]
] | ||
5g4zs6 | how does vinegar help hold a poaching egg together? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5g4zs6/eli5_how_does_vinegar_help_hold_a_poaching_egg/ | {
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"text": [
"Vinegar denatures (unravels) the protein albumin that comprises much of the egg white. When albumin denatures, it unravels into a long strand of amino acids that form bonds with other strands of albumin. This phenomenon is called cross linking,... | [] | [] | [
[]
] | ||
9fy66f | how is powdered milk created? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9fy66f/eli5_how_is_powdered_milk_created/ | {
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"The water content of milk is evaporated away until a hard substance remains that is ground into powder\n\nfrom wikipedia:\n\nIn modern times, powdered milk is usually made by spray drying[6] nonfat skimmed milk, whole milk, buttermilk or whey. Pa... | [] | [] | [
[]
] | ||
pmprm | X post from r/Atheism. Somebody explain how this is proof of evolution. | _URL_0_
There is the link. To the picture.
BTW: Im an Atheist. | askscience | http://www.reddit.com/r/askscience/comments/pmprm/x_post_from_ratheism_somebody_explain_how_this_is/ | {
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"text": [
"First of all, on this subreddit please do not post things starting off with \"I am an atheist\". It isn't helpful to the subreddit at all to start a theism vs atheism arguement.\n\nThis particular dia... | [] | [
"http://i.imgur.com/WVVEo.jpg"
] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Chimpanzee_genome_project"
]
] | |
5ma5kw | when a jar won't open, why does hitting it from the bottom, or tapping the lid on the edge of the counter, work to make it easier to open? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ma5kw/eli5when_a_jar_wont_open_why_does_hitting_it_from/ | {
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"text": [
"A jar won't open is often due to pressure. Hitting a jar from the bottom rarely works for me. What I do is put it under running hot tap water for 30 s and it ... | [] | [] | [
[],
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[],
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] | ||
2i569p | Why Does Drag Begin To Reduce After An Object Breaks The Sound Barrier? | I was watching [Balakrishnan's classical physics lectures](_URL_0_), and he mentions that the drag force in air begins linearly, then becomes non-linear, and then starts to quickly drop off after the sound barrier is broken. I couldn't get an intuitive understanding for why this is. Also, what happens to the drag force... | askscience | http://www.reddit.com/r/askscience/comments/2i569p/why_does_drag_begin_to_reduce_after_an_object/ | {
"a_id": [
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"text": [
"It depends on the aircraft. The decrease seen in the lecture isn't universal to all objects, here's a [swept-wing](_URL_0_) drag profile: \n_URL_3_ \nAnd here's a [straight-wing](_URL_5_) drag profile: \n_URL_4_ \n\nBesides geometry, you hav... | [] | [
"http://www.youtube.com/watch?v=ucG_Ft36XOo&t=16m15s"
] | [
[
"http://en.wikipedia.org/wiki/Swept_wing",
"http://scilib.narod.ru/Avia/DAC/images/fig014.gif",
"http://upload.wikimedia.org/wikipedia/commons/c/c6/Drag_sphere_nasa.svg",
"http://scilib.narod.ru/Avia/DAC/images/fig035.gif",
"http://scilib.narod.ru/Avia/DAC/images/fig036.gif",
"http://en.wi... | |
5mw2p9 | If atmosphere moves with the earth, how does every part of the atmosphere move at the different speed required for it to stay in place? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/5mw2p9/if_atmosphere_moves_with_the_earth_how_does_every/ | {
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"text": [
"Short answer, they don't. Air moving along a rotating surface into an area where its previous velocity is inconsistent with its new location generates coriolis effects. Among other things, these cause hurricanes, and is wh... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Coriolis_force#E.C3.B6tv.C3.B6s_effect"
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1lakjm | why do we order steak on a "rare- well-done" scale and not chicken? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1lakjm/eli5_why_do_we_order_steak_on_a_rare_welldone/ | {
"a_id": [
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"text": [
"Because beef is a very dense meat, poultry is not. Since beef is very dense, it's rare for bacteria or viruses to live on the inside of the meat, generally they only live on the surface. That's why you usually sear the outs... | [] | [] | [
[],
[
"http://www.thedailybeast.com/newsweek/2013/07/17/chicken-sashimi-is-the-other-pink-meat.html"
]
] | ||
50laan | How quickly can the human body gain weight? | Could someone consume enough calories and turn that energy into fat quickly enough to Pop? (to some degree or another) | askscience | https://www.reddit.com/r/askscience/comments/50laan/how_quickly_can_the_human_body_gain_weight/ | {
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"text": [
"In extreme cases, [MMA fighters can dehydrate themselves enough to lose 30 pounds in 5 days](_URL_0_), and then gain 30 pounds in 24 hours by rehydrating. However, this is both medically dangerous and unsustainable for a longer period."
]
} | [] | [] | [
[
"http://fourhourworkweek.com/2013/05/06/how-to-cut-weight-ufc/"
]
] | |
29hegc | Did Hitler ever find out that Himmler and Heydrich falsified the reasons for the Night of the Long Knives? | Himmler and Heydrich destroyed Rohm for personal and aspirational reasons- did Hitler ever come to understand that he'd been played a bit? Did he retaliate in any way or did the resulting power that the demonstration and purge provided negate any hard feelings? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/29hegc/did_hitler_ever_find_out_that_himmler_and/ | {
"a_id": [
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"text": [
"The Röhm-Putsch got rid of a whole array of competitors to Hitler. We have no reason to believe this was not in Hitler's best interests. The SA by the time was seen by the public as a too-brutal movement, and Hitler was able to polish his image b... | [] | [] | [
[]
] | |
1sfakg | why are passwords with extra characters like numbers and symbols considered "stronger," as opposed to just a password that's longer. | So lots of sites now ask for passwords that have at least 1 number and/or at least one symbol. What I don't understand is how this makes the password stronger.
I mean, of course, I understand that with > 26 characters, the number of possible password combinations increases significantly, but if the "cracker" trying t... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sfakg/eli5_why_are_passwords_with_extra_characters_like/ | {
"a_id": [
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"text": [
"Basically passwords on a server are transformed into a \"hash\" string that cannot be reversed back to the original password. When you login to a site, you submit your password and they run the hash function on it to see if it matches the stored ... | [] | [] | [
[]
] | |
8g57j0 | In equilibrium, why don’t pure solids and liquids affect the K value? | askscience | https://www.reddit.com/r/askscience/comments/8g57j0/in_equilibrium_why_dont_pure_solids_and_liquids/ | {
"a_id": [
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"text": [
"Because the concentration of the pure substance (say concentration of H2O in water) does not change significantly in the reaction and therefore it cancels out.\n\nFor instance say you have C(s) + O2(g) < - > CO2(g). \n\nK will depend on the con... | [] | [] | [
[]
] | ||
9eq1kr | What medieval qualities did Europe still possess in its 15th and 16th century? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9eq1kr/what_medieval_qualities_did_europe_still_possess/ | {
"a_id": [
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"text": [
"Well, I'm a medievalist and my specialty is the fifteenth century, so...hopefully, quite a lot? Hahaha.\n\nMore seriously, though--there are a few things going on here: the myth of medieval stasis, the difficulties of historical periodization in ... | [] | [] | [
[]
] | |
4hrnck | how is it possible that certain theories in math (euclid's 5th postulate, the comparability theorm) have been proven to be unprovable? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4hrnck/eli5_how_is_it_possible_that_certain_theories_in/ | {
"a_id": [
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"text": [
"The easiest way to show that something is unprovable is to show that it is false. We did this with Euclid's 5th postulate (in a manner of speaking). There exist different types of space where it doesn't hold.\n\nI haven't he... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Continuum_hypothesis",
"https://en.wikipedia.org/wiki/Gödel%27s_incompleteness_theorems"
]
] | ||
6f8rp9 | if bacteria randomly mutate anyway, why does over prescribing antibiotics really matter? | I guess what I am asking is - tomorrow, a bacteria strain could randomly mutate to be resistant not only to current antibiotics but the random mutation could by chance make them resistant to what we happen to be working on next. Since mutation is just chance to a degree, shouldn't we just enjoy antibiotics all we want... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6f8rp9/eli5if_bacteria_randomly_mutate_anyway_why_does/ | {
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"text": [
"Random mutation is just that. It's not driven by a response to some change in the environment. By abusing antibiotics, those bacteria that survive are guaranteed to have a resistance they pass on. If b... | [] | [] | [
[
"https://www.youtube.com/watch?v=plVk4NVIUh8"
],
[],
[
"https://youtu.be/yybsSqcB7mE"
]
] | |
194rwj | how does the government track people downloading illegal music? | Also, if possible, please explain how they can track who is visiting sites offering illegal downloads. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/194rwj/eli5_how_does_the_government_track_people/ | {
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"They don't bother to track who visits sites that offer illegal downloads since it it too hard to know what they downloaded.\n\nBut bittorrent, one of the mo... | [] | [] | [
[],
[],
[],
[],
[]
] | |
18zrhf | French Military perspective of the French Revolution | I am not completely certain this has not been answered before skimmed briefly French Revolution posts...apologize if this has been posted previously...I am curious about French Military that helped/aided the American Revolution what was their perspective/understanding and such of the French Revolution taking place back... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/18zrhf/french_military_perspective_of_the_french/ | {
"a_id": [
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"text": [
"Much of the military leadership was aristocratic, and the anti-establishment views of the revolution caused an exodus in the chain of command at the outset of the French Revolution. \n\nHowever there were a number of military leaders that *did* s... | [] | [] | [
[]
] | |
1lxrg5 | What was the differences in music such as Metal in West and East Germany? | Just to clarify, I am just using metal as an example. Really, I mean just the differences in music in general. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1lxrg5/what_was_the_differences_in_music_such_as_metal/ | {
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"text": [
"I don't know if the bands are comparable at all, but the scorpions were from West Germany, and 5/6 members of Rammstein are from Easy Germany. There is a bit of a gap in eras when... | [] | [] | [
[],
[],
[
"http://www.youtube.com/watch?v=ZebPEmWh7tE",
"http://www.youtube.com/watch?v=qIIlSjO_wYc",
"http://www.youtube.com/watch?v=DwoBd3sMGCY",
"http://www.youtube.com/watch?v=4HLAfX1Xtwk",
"http://www.metal-archives.com/bands/Macbeth/45588"
],
[
"http://en.wikipedia.org/wiki/Hea... | |
24xuaz | how can fruit that costs $2 in us food shops cos $100 in japan? | How is this possible, surely fruits can't me that hard to produce/import in japan?
Reference: _URL_0_
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24xuaz/eli5how_can_fruit_that_costs_2_in_us_food_shops/ | {
"a_id": [
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"text": [
"Those are not ordinary \"let's have a snack\" fruit but meant to be given as very exclusive gifts. Every one of those fruits are in some sense \"perfect\", just look at how identical the grapes are. That's a particular quir... | [] | [
"https://www.youtube.com/watch?v=fR6GefDZWeQ"
] | [
[
"http://www.bbc.com/news/world-radio-and-tv-17352173"
],
[]
] | |
hbgyd | Energy generation: is our sun the ultimate source? If not, when and why would another source be preferred? | As a layman, it seems that despite current technological limitations, solar energy would be the most fruitful to develop. Is that true? What barriers are present for this technology? What do you see for the future of solar? | askscience | http://www.reddit.com/r/askscience/comments/hbgyd/energy_generation_is_our_sun_the_ultimate_source/ | {
"a_id": [
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"text": [
"A lot of things are meant by solar. But I'll just say that the sun is the only energy *input* to our planet. Fossil fuels are stored solar energy. Fission and fusion is technically a limited source of energy, even if not in practice. "
]
} | [] | [] | [
[]
] | |
9ha1fk | Do mammals, specifically monkeys, realize that mating leads to offspring? | Edit: Was brought up in class | askscience | https://www.reddit.com/r/askscience/comments/9ha1fk/do_mammals_specifically_monkeys_realize_that/ | {
"a_id": [
"e6f1hny"
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"score": [
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"text": [
"No, the two events are too far apart to form a connection. They also don't realise that they are pregnant and about to give birth to a baby, they just \"feel like\" finding a safe nest all of a sudden when they are about to give birth due to horm... | [] | [] | [
[]
] | |
4xxg2y | For how long did "Roman" and "Etruscan" persist as distinct, living cultural identities in ancient Roman society? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4xxg2y/for_how_long_did_roman_and_etruscan_persist_as/ | {
"a_id": [
"d6jmywm"
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"text": [
"I'm not a massive expert on Etruscans or anything, so if someone has some more specialised knowledge, please chip in. I don't think we can pinpoint any specific time when Etruscan identity stopped existing, because of the problems of defining wha... | [] | [] | [
[
"https://www.academia.edu/16608087/Etruscan_Identity_and_Service_in_the_Roman_Army_working_paper_",
"https://s3.amazonaws.com/classconnection/838/flashcards/7021838/jpg/3084-14A2D0AF76238EE0E43.jpg"
]
] | ||
5bdrul | how to deal with depression as a friend/spouse/relation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5bdrul/eli5_how_to_deal_with_depression_as_a/ | {
"a_id": [
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"Depression is complicated, and to be honest, the only thing you can do is be there for them and try to help them if they get frustrated or upset. The only thing is, don't go over the top and be that guy who is always saying shit like \"You okay? ... | [] | [] | [
[]
] | ||
a1dagx | I just finished reading an 1803 English novel that mentions Mexico. I had thought that the name was rarely used to refer to what's now Mexico before it became independent. What can you tell me about the use of the name "Mexico" for all of New Spain before independence? | Since the context is the different places that a grizzled sailor has sailed to, I think we can be sure that the passage refers to New Spain in general, rather than Mexico City, which is landlocked.
EDIT: Here is the passage in question, from *The Romance of the Pyrenees* by Catherine Cuthbertson:
"Thomas, indignant a... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a1dagx/i_just_finished_reading_an_1803_english_novel/ | {
"a_id": [
"eapwo4e",
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"score": [
17,
13
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"text": [
"So lets start from the beginning, the origin of the word \"Mexico\" comes from the capital city of the Mexica's (popularly know as the Aztecs), one of the constitutent members of the Triple Alliance, composed of the Alcolh... | [] | [] | [
[
"https://jisho.org/search/%E5%A2%A8%E8%A5%BF%E5%93%A5%20",
"https://www.mx.emb-japan.go.jp/files/000132661.pdf",
"https://ja.wikipedia.org/wiki/%E6%85%B6%E9%95%B7%E9%81%A3%E6%AC%A7%E4%BD%BF%E7%AF%80#%E4%BD%BF%E7%AF%80%E3%81%AE%E6%97%85%E7%A8%8B",
"https://en.wikipedia.org/wiki/Hasekura_Tsunenaga"
... | |
5x6bjx | why do they still make complicated stop-motion movies if there is more-efficient animation software available? | Why do they still make complicated stop-motion movies, like Kubo and the Two Strings, if there is more-efficient animation software available? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5x6bjx/eli5_why_do_they_still_make_complicated/ | {
"a_id": [
"defl5g2",
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20,
6
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"text": [
"Because it has a very particular style. It's like why do people still paint with paint and brushes when they could do it on a computer, or why do people buy records when they can just get an mp4. New and efficient doesn't m... | [] | [] | [
[],
[]
] | |
39ewlz | Where on the Reichstag was the famous photo with the soviet flag? | I currently live in Berlin and recently went to the top on the Reichstag building. I thought up there it might say where the image of the Soviet Soldier was snapped but it did not. I think, based on the buildings in the background it is looking over the city and if it wasnt rubble you would see the Brandenburg Gate in ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/39ewlz/where_on_the_reichstag_was_the_famous_photo_with/ | {
"a_id": [
"cs2v93t"
],
"score": [
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"text": [
"I'm not entirely sure but I think they are standing on the south eastern part and the photographer looks south slightly east. The corner you see at the bottom of the picture would be Ebertstr./Dorotheenstr. today. So roughly here:\n\n_URL_1_\n\nT... | [] | [
"https://reconsideringrussia.files.wordpress.com/2015/05/soviet-flag-reichstag-berlin.jpg"
] | [
[
"http://www.alt-berlin.info/cgi/stp/lana.pl?nr=37&gr=5&nord=52.516265&ost=13.374636",
"https://www.google.de/maps/dir/52.5182905,13.3766687//@52.5182274,13.3771239,19z?hl=de",
"https://iconicphotos.wordpress.com/2009/04/22/the-red-flag-over-the-reichstag-2/"
]
] | |
7sadaq | What makes the Magnetic South Pole and the Geomagnetic South Pole seperate locations, and why are they seperate? | Was watching CGPGrey's video [Who Owns Antarctica? (Bizarre Borders Part 3)](_URL_0_) and noticed that when he made a quick mention that there was more than one "South Pole", there was a Magnetic South Pole, and a Geomagnetic South Pole. What's the difference between Magnetic and Geomagnetic, and why are the two in sep... | askscience | https://www.reddit.com/r/askscience/comments/7sadaq/what_makes_the_magnetic_south_pole_and_the/ | {
"a_id": [
"dt3kul9"
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"score": [
4
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"text": [
"The magnetic south pole is where magnetic field lines of the earth are both vertical and pointing upwards (if you were standing there). Compare this to, say, Hawaii, where the magnetic field lines would be nearly horizontal to someone standing on... | [] | [
"https://youtu.be/DbKNlFcg02c"
] | [
[]
] | |
70onyr | Why are Scotch-Irish considered one group, and separate from English, when they are different countries with different beliefs? | My impression, as an American who has Scotch-Irish heritage, is they don't really like each other. They seem to have different religious beliefs, Irish are usually catholic and according to the front page most of the Scots are non religious. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/70onyr/why_are_scotchirish_considered_one_group_and/ | {
"a_id": [
"dn4vrex"
],
"score": [
129
],
"text": [
"I believe the confusion here stems from the usage of the term \"Scotch-Irish\" to denote the ethnic group in question. Scotch-Irish does not actually refer to a collective grouping of both Scottish and Irish peoples. Scotch-Irish is another (so... | [] | [] | [
[]
] | |
3jy4kl | why do so many news agencies cite reuters stories for their information? what's so special about reuters? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jy4kl/eli5_why_do_so_many_news_agencies_cite_reuters/ | {
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"score": [
... | [] | [] | [
[],
[],
[],
[],
[],
[],
[
"http://www.amazon.com/Flat-Earth-News-Award-Winning-Distortion/dp/0099512688/ref=sr_1_1?ie=UTF8&qid=1441628575&sr=8-1&keywords=flat+earth+news&pebp=1441628580979&perid=1CXBV0FJN33HY54D93YC",
"https://www.youtube.com/watch?v=4iEshd6izgk"
],
[],
... | ||
3mfczj | how do we map images from the non-visible color spectrum into an image we can see? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mfczj/eli5_how_do_we_map_images_from_the_nonvisible/ | {
"a_id": [
"cveji9p",
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"score": [
2,
2
],
"text": [
"Light exists on a spectrum, so even if we can't see it we can still tell that this part of the image has longer wavelengths and this part has shorter ones. We can shift these into a range we find useful. Just map all the sho... | [] | [] | [
[],
[
"http://www.x20.org/wp-content/uploads/2014/04/thermal-image-man-breaking-into-warehouse-300x225.jpg",
"http://cdn.lightgalleries.net/4ebd8bde12cf2/images/Iraq_Perspective_BookEdit_0049-2.jpg",
"http://www.terrahope.com/videos/video-3.jpg",
"http://i.telegraph.co.uk/multimedia/archive/02357/... | ||
5e8bc0 | Does the brain have a clock, like a CPU? | A CPU has a centralized clock which in which instruction(s) are executed in each clock cycle.
Neural oscillation, or "brain waves" are repetitive neural activities where the firing of the neurons are usually in synchronization with the oscillation. From what I've read, these are the following known waves and frequenc... | askscience | https://www.reddit.com/r/askscience/comments/5e8bc0/does_the_brain_have_a_clock_like_a_cpu/ | {
"a_id": [
"db0myfr",
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"score": [
2,
15,
5
],
"text": [
"The point everyone is making, that all neurons are clock-like blah blah blah, is all well and good, but how is it no one has mentioned the **Super-Chiasmatic Nucleus (SCN)?** It may not be the end-all... | [] | [] | [
[],
[],
[]
] | |
5xaee8 | Can physicists capture a gluon particle on its own, or even collect a pure sample of gluons, and would it be massless? | askscience | https://www.reddit.com/r/askscience/comments/5xaee8/can_physicists_capture_a_gluon_particle_on_its/ | {
"a_id": [
"degjezh",
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"score": [
7,
48
],
"text": [
"The closest thing to this is the currently-hypothetical [glueball](_URL_0_), which is a bound particle made only of gluons. It is expected to have a mass 3-5 times that of the electron. There is currently an American experi... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Glueball"
],
[]
] | ||
6qh9au | why aren't coal and oil interchangeable? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6qh9au/eli5_why_arent_coal_and_oil_interchangeable/ | {
"a_id": [
"dkx8o4r"
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"text": [
"Coal can be converted into liquid fuel through a few different processes that are broadly called \"coal liquidation\". There are some plants that exist today that convert coal into things like jet fuel and the Nazi's used similar processes during... | [] | [] | [
[]
] | ||
4epg6b | Has there ever been a notable country to form without physical conflict/war? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4epg6b/has_there_ever_been_a_notable_country_to_form/ | {
"a_id": [
"d22whc3"
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"text": [
"Sorry, we don't allow [\"trivia seeking\" questions](_URL_0_). These tend to produce threads which are collections of disjointed, partial responses, and not the in-depth discussions about a particular topic we're looking for. If you have a spec... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/rules#wiki_no_.22trivia_seeking.22_questions",
"https://www.reddit.com/r/AskHistorians/comments/3nub87/rules_change_throughout_history_rule_is_replaced/"
]
] | ||
1dh9h2 | space - time crystal | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1dh9h2/eli5_space_time_crystal/ | {
"a_id": [
"c9q9tqp"
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"score": [
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"text": [
"I don't even..."
]
} | [] | [] | [
[]
] | ||
3g79lz | why are software installers (windows) used for programs that work fine as standalone executables? | I've recently been travelling a lot, and one thing that I've noticed is how many programs I use that work fine if you just copy the folder the executable lives in to a new computer or flash drive. Most of the time these programs are not installable from scratch without Windows administrator access. What's the rationale... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3g79lz/eli5_why_are_software_installers_windows_used_for/ | {
"a_id": [
"ctvmqkn"
],
"score": [
2
],
"text": [
"Often times this is done for users who want uniformity in their apps. For a portable or self-contained application, often times the installers are just wrappers that add a Start menu entry, add registry keys so Windows knows that it is 'installed... | [] | [] | [
[]
] | |
3c6uhe | why do americans have to face the flag during the national anthem? | Never heard this one until a shower thought that was posted today. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3c6uhe/eli5why_do_americans_have_to_face_the_flag_during/ | {
"a_id": [
"cssrh4q",
"csssm0q",
"cstifk2"
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"score": [
10,
8,
3
],
"text": [
"The flag represents our nation.\n\nThe national anthem is our \"nation's song\".\n\nFacing the flag (quietly and while rendering proper honors) when it is played is a matter of protocol, with the minds... | [] | [] | [
[],
[],
[]
] | |
7ytwxb | why can't we increase our penis size through excercise, just like developing other parts of our body by working out? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7ytwxb/eli5_why_cant_we_increase_our_penis_size_through/ | {
"a_id": [
"duj5g6j",
"duj5xn6"
],
"score": [
18,
2
],
"text": [
"Because working out increases the size of *muscles,* and this organ is not a muscle. So it's not relevant.",
"There are a couple of reasons why that doesn't work. First is that the penis isn't a muscle, rather it is ful... | [] | [] | [
[],
[]
] | |
415wsq | I have heard a lot about the internment of Japanese-Americans during WWII, but how were Americans of German and Italian descent treated? Also, was it common for them to hide their German or Italian heritage? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/415wsq/i_have_heard_a_lot_about_the_internment_of/ | {
"a_id": [
"cyzvkky"
],
"score": [
4
],
"text": [
"At some point there was a movement to intern Italians who had never formally renounced their citizenship, regardless of how long they'd been in America. There were some arrests, mostly in California. Interestingly, Joe DiMaggio's parents were Ita... | [] | [] | [
[
"http://articles.latimes.com/2010/aug/23/local/la-me-italians-20100823",
"http://www.newenglandhistoricalsociety.com/in-the-hidden-history-of-wwii-italian-enemy-aliens-were-interned-restricted/",
"http://www.sfgate.com/magazine/article/A-SECRET-HISTORY-The-harassment-of-Italians-2866287.php",
"htt... | |
109myi | The Theory of Evolution explains the fact of evolution. What fact does String Theory explain and is it "just" a theory? | askscience | http://www.reddit.com/r/askscience/comments/109myi/the_theory_of_evolution_explains_the_fact_of/ | {
"a_id": [
"c6bkdze",
"c6bl86q"
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"score": [
3,
2
],
"text": [
"In physics there is a third use of the word \"theory\", meaning a mathematical framework that makes predictions, whether or not it has been verified. String theory is a vast framework which makes predictions, but so far non... | [] | [] | [
[],
[]
] | ||
3tn4ii | all these "free! just pay shipping!" items i keep seeing on facebook | I keep seeing a lot of cool shit, but it it seems like there must be a catch somewhere. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3tn4ii/eli5_all_these_free_just_pay_shipping_items_i/ | {
"a_id": [
"cx7kgsq"
],
"score": [
3
],
"text": [
"If it is anything like I've been seeing on /r/NearlyFreebies and /r/free, most of those things most likely come from Chinese websites where they can buy in bulk for very little money (such as AliBaba/Express or Wish/Geek, where many things are $1... | [] | [] | [
[]
] | |
382rra | on computers running windows, how can an empty folder take up 0 bytes? surely the disk has some trace of the folder there, even if there's nothing in it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/382rra/eli5_on_computers_running_windows_how_can_an/ | {
"a_id": [
"crrshnk"
],
"score": [
15
],
"text": [
"Part of the reason you buy a 60GB hard drive and don't get the full 60GB is that some of that space is sectioned off for information that manages the file system. The space for file system information is fixed, and you can't store things in it. ... | [] | [] | [
[]
] | ||
1x8em5 | Why do actors in modern movies today feel more "real" than the acting we see in old movies like Casablanca? | Is the difference in technique, culture, medium, or something else?
I've heard of "method acting" where actors almost immerse in and become their role--was this less common before? If the difference is cultural, does that mean that normal people actually walked and talked like the people in old movies? Did the shift ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1x8em5/why_do_actors_in_modern_movies_today_feel_more/ | {
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"score": [
2251,
49,
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15,
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12,
8,
2
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"text": [
"Others have covered the technological an... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Stella_Adler",
"http://books.google.com/books?id=doy-aorlNagC&printsec=frontcover&dq=sanford+meisner+on+acting&hl=en&sa=X&ei=gVX0UrXcIqSRygGn9ICYBw&ved=0CDcQ6wEwAA#v=onepage&q=sanford%20meisner%20on%20acting&f=false",
"http://books.google.c... | |
cl2z8g | Why are solar sails reflective? Wouldn't the momentum transfer from the photons to the sail better if it were matte? | Maybe I don't understand momentum properly, but wouldn't the direction of the momentum be better conserved if the photons didn't bounce off the surface? | askscience | https://www.reddit.com/r/askscience/comments/cl2z8g/why_are_solar_sails_reflective_wouldnt_the/ | {
"a_id": [
"evsnvru"
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"score": [
33
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"text": [
"Consider 2 scenarios: The first is a sail that is completely non-reflective and the second is a sail that is perfectly reflective. Now consider a photon with momentum *p* striking the sail from a direction perpendicular to the sail.\n\nIn scenar... | [] | [] | [
[]
] | |
2uh08l | how do you pause a video game, as in what is going on with the processor and memory once a pause is executed? | For me, pausing a single player game began as simply as pressing "start" on an NES controller. ELI5 how the system accepts the pause command, and continues exactly where I left off once the resume command is requested. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2uh08l/eli5_how_do_you_pause_a_video_game_as_in_what_is/ | {
"a_id": [
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"score": [
4,
2
],
"text": [
"In most games, the program is performing some sort of loop: check button presses, move characters, move enemies, etc. and repeat. When you hit pause, it just skips all the other steps besides checking button presses. So wh... | [] | [] | [
[],
[]
] | |
26zwt8 | In ancient battle, what was the casualty ratio of combat to rout? | I'm currently reading "How Great Generals Win" by Bevin Alexander (great book, recommended by someone on this sub). Towards the end of the chapter about Hannibal and Scipio, Alexander states that in encounters of ancient armies, by *far* the most casualties occurred not during the actual fighting, i.e. exchange of miss... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/26zwt8/in_ancient_battle_what_was_the_casualty_ratio_of/ | {
"a_id": [
"chwg9ce"
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"score": [
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"text": [
"Throughout ancient times, casualty rates for the loser of pitched battles were significantly higher than those of the winner. The losing side having 5 to 10 times the casualties of the winning side would not be uncommon. At Cannae, a battle which... | [] | [] | [
[]
] | |
51v8a2 | Can something be 1.5 plank lengths long? | Nothing can be shorter than a plank length, but is length/distance a discrete thing? | askscience | https://www.reddit.com/r/askscience/comments/51v8a2/can_something_be_15_plank_lengths_long/ | {
"a_id": [
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"text": [
"[The Planck length is not a fundamental pixel size](_URL_0_). It's just a really small length-scale constructed from physical constants, and interactions at that scale require an understanding of quantum gravity.",
"It... | [] | [] | [
[
"https://www.physicsforums.com/insights/hand-wavy-discussion-planck-length/"
],
[]
] | |
2xd3l4 | Can you think of a culture that existed 1000 years ago, anywhere on the planet, where people (at least most people) didn't believe in corporal punishment as an element of good parenting? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2xd3l4/can_you_think_of_a_culture_that_existed_1000/ | {
"a_id": [
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"text": [
"The best I can do is point at the San people, who are hunter gatherers in the southwest of Africa. Their culture has likely persisted in the same location from the Paleolithic era, because it's so inhospitable there they wo... | [] | [] | [
[
"http://www.context.org/iclib/ic04/mcelroy/"
],
[
"https://shareok.org/bitstream/handle/11244/9450/Newcomb_okstate_0664M_1649.pdf?sequence=1"
]
] | ||
343ain | why do guys shave when they are in the military and in space? | I don't even want to shave and I'm at home! hehehe | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/343ain/eli5why_do_guys_shave_when_they_are_in_the/ | {
"a_id": [
"cqqu4rx"
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"score": [
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"text": [
"Per regulation. \nAir Force is AFI 36-2903. \nIt gives the appearance of uniformity and professionalism. \nAlso, in case of a CBRN attack, if you're shaven, when you have the gas mask on, it creates a better seal to your face. So you don't get f... | [] | [] | [
[]
] | |
8282o8 | Is wild cattle in the US extinct and are owned cattle domesticated at this point? | I realized that my many years on Earth I have never seen a wild cow or cows just chillin in the wild. This lead me to wonder if we stopped eating beef and drinking milk, would cattle soon disappear in the US. I know in countries like India, there are Cows in the wild, but in the US it doesn't seem like there are any le... | askscience | https://www.reddit.com/r/askscience/comments/8282o8/is_wild_cattle_in_the_us_extinct_and_are_owned/ | {
"a_id": [
"dv83tlx",
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"score": [
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7
],
"text": [
"Cattle originated in Asia and Europe. They are not native to the Americas. There are no such thing as wild cattle here, however there may be a few feral ones. Most cattle here are owned. They might be released on publi... | [] | [] | [
[],
[]
] | |
17azbn | how does a black hole have mass? | I was asked this last night by my stepmom. I didn't have a satisfactory answer. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/17azbn/eli5_how_does_a_black_hole_have_mass/ | {
"a_id": [
"c83unpj"
],
"score": [
2
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"text": [
"A black hole is often created by star collapsing much of its mass into a small space. It's literally a lot of mass in a small volume. You might as well ask how an apple has mass. "
]
} | [] | [] | [
[]
] | |
14sz82 | If a "flood of dopamine" causes downregulation of dopamine receptors, what causes upregulation? | The obvious answer is that a lack of dopamine over time would cause the neurons to upregulate their dopamine receptors; what I want to know is whether that is actually the case or if upregulation is caused by some other trigger (or if not enough is known about the process to say one way or the other).
| askscience | http://www.reddit.com/r/askscience/comments/14sz82/if_a_flood_of_dopamine_causes_downregulation_of/ | {
"a_id": [
"c7g7pfy"
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"score": [
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"text": [
"Lack of dopamine does up-regulate the receptors, but some studies also show that activation of the NMDA glutamate receptor results in dopamine receptor up-regulation as well. (_URL_0_)\n\nIn an older study, hypertensive rats were found to have a ... | [] | [] | [
[
"http://www.ncbi.nlm.nih.gov/pubmed/11818555",
"http://www.ncbi.nlm.nih.gov/pubmed/8433803"
]
] | |
1nemqw | Was the United States' approach to the Philippine Theater of the Spanish-American War exceptional for any reason? | I'm asking specifically in terms of imperialism. Americans have historically been reluctant to admit to being imperialists, but it seems to me that the treatment of the Philippines bears out the argument that the US was engaging in formal imperialism. Was there anything present in this conflict that separated the US fr... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1nemqw/was_the_united_states_approach_to_the_philippine/ | {
"a_id": [
"cci27pp"
],
"score": [
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"text": [
"The initial U.S. engagement in the Philippines was made as a calculated attack on the holdings of the Spanish elsewhere in the world. From the outset, the conflict was not meant to be an occupation, but a weakening attack upon their navy and impe... | [] | [] | [
[]
] | |
rbhe1 | Are there any salt water rivers? | I was wondering why the oceans are salt water, and even some lakes but there are no salt water rivers? Do they exist? When rivers form from the ocean (I think this happens), how quickly do they lose their salt?
Edit: Thanks for the great responses. Life makes slightly more sense now :) | askscience | http://www.reddit.com/r/askscience/comments/rbhe1/are_there_any_salt_water_rivers/ | {
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"text": [
" > I was wondering why the oceans are salt water, and even some lakes but there are no salt water rivers?\n\nThe answer has to do with how salt and water get together. When an oc... | [] | [] | [
[],
[],
[],
[
"http://maps.google.ca/?ll=41.076763,52.927666&spn=0.104299,0.148487&t=h&z=13",
"http://en.wikipedia.org/wiki/Garabogazk%C3%B6l",
"http://en.wikipedia.org/wiki/Oxbow_lake"
]
] | |
7n2kq0 | if the ice caps melted, would the oceans be colder or warmer? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7n2kq0/eli5_if_the_ice_caps_melted_would_the_oceans_be/ | {
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"text": [
"Not a scientist but I read somewhere that when the ice melts the additional water creates more overall surface area of water. That add... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Albedo"
],
[],
[],
[]
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5fz68v | How much did the experience of the French Resistance against the Nazis inform French strategy against insurgencies in places like Algeria and Vietnam? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5fz68v/how_much_did_the_experience_of_the_french/ | {
"a_id": [
"daoevov"
],
"score": [
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"text": [
"I don't have a good answer for you, but episodes 39 and 40 of the AskHistorians podcast cover \"Algeria and Counter-Insurgency\", so you may be able to find some relevant information there. You can listen here: _URL_0_"
]
} | [] | [] | [
[
"https://soundcloud.com/user679855208"
]
] | ||
1d5sc7 | During the Cold War was their every controversy over kids having to read authors such as Tolstoy, or Dostoevsky in school because they were Russian? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1d5sc7/during_the_cold_war_was_their_every_controversy/ | {
"a_id": [
"c9n6tw2"
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"score": [
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"text": [
"As far as I've read, Americans embraced many of these pre-Soviet authors more widely than the Soviets did. Particular Dostoevsky. He was castigated and discredited by the Soviets because of his views of radicalism, his works on Orthodoxy, and hi... | [] | [] | [
[]
] | ||
j4zqg | keynesian economics | Could someone please ELI5 what Keynesian Economics is and which political party typically supports Keynesianism and for what reasons? It seems to be a hot topic now in regards to the legislation in Congress about the Debt Ceiling, and I'd like to know more. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/j4zqg/eli5_keynesian_economics/ | {
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"text": [
"Keynesians believe that recessions can be caused by nothing more than a vicious cycle:\n\n* People are getting laid off.\n* Laid off people conserve their savings very carefully.\... | [] | [] | [
[],
[],
[
"http://www.youtube.com/watch?v=GTQnarzmTOc",
"http://www.youtube.com/watch?v=d0nERTFo-Sk"
],
[]
] | |
18ukeq | As I understand it, the Sun's gravity force and the planets in our solar system's motion through space is "equal" and therefore we're not getting pulled towards the sun and neither drifting away. How did all the planets get the speed around the sun they needed to stay in a stable orbit? | askscience | http://www.reddit.com/r/askscience/comments/18ukeq/as_i_understand_it_the_suns_gravity_force_and_the/ | {
"a_id": [
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"text": [
"What would become the solar system began to coalesce out of a cloud of gas, some unknown perturbation caused a section of this gaseous cloud to collapse. The largest part of that matter condensed in the center as what would ... | [] | [] | [
[],
[
"http://aether.lbl.gov/www/tour/elements/stellar/stellar_a.html"
]
] | ||
1ws2tp | if opposition groups don't like the government, why do they boycott elections? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ws2tp/eli5_if_opposition_groups_dont_like_the/ | {
"a_id": [
"cf4v2ry"
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"score": [
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"text": [
"If you think that the government is corrupt, if you boycott the elections and they get elected you can just continue saying they are corrupt.\n\nIf they actually ARE corrupt, then if you participated they'd just ignore your votes and put themselv... | [] | [] | [
[]
] | ||
3z0596 | why do people still have problems conceiving? wouldn't evolution mean that those with 'poor' genes wouldn't persist? or are all problems with conceiving environment related? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3z0596/eli5_why_do_people_still_have_problems_conceiving/ | {
"a_id": [
"cyi6fsq",
"cyi6jtv",
"cyiabbm"
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"score": [
3,
2,
3
],
"text": [
"There's a mass variety of reasons.\n-birth/growth defects\n\n-doing something wrong (Ie having sex 24/7, or not around ovulation)\n\n-trouble conceiving doesn't necessarily mean they will never have a k... | [] | [] | [
[],
[],
[]
] | ||
1lzh16 | why is that in the same room, same temperature, my boyfriend can be sweating while i am shivering? | We are close to the same height. If we are wearing the same amount of clothing - or even if he is shirtless and I am wearing a sweater, he can be sweating while I am so cold I am shivering. Why do we feel THAT different? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1lzh16/eli5_why_is_that_in_the_same_room_same/ | {
"a_id": [
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"score": [
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2,
5
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"text": [
"Does he have a higher body fat than you? Fat is very insulating and would explain for it. \nAlso is he active and take part in a lot of sports? A faster metabolism will keep you warmer, you've probably ... | [] | [] | [
[],
[],
[]
] | |
77g8pr | How do Historians reading old documents correct for typo's, bad handwriting and other writing mistakes? | So like a lot of people I keep a journal. My hand writing is also just atrocious. Something I've thought about a lot is how do historians working on old documents figure out what's a typo/mistake, whats a regional difference and what's just what people actually called something?
This goes for pretty much every field, ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/77g8pr/how_do_historians_reading_old_documents_correct/ | {
"a_id": [
"dolmd5h"
],
"score": [
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"text": [
"tl;dr: Plenty of experience and good pattern recognition skills.\n\nMy background in this: I'm in the [natural history] museum field where we sometimes have to \"decode\" old, handwritten labels and field notes; have participated in a historical ... | [] | [] | [
[
"http://www.wode.div.ed.ac.uk/",
"http://shakespeareauthorship.com/name1.html",
"http://www.calligraphy-skills.com/images/minimum.gif"
]
] | |
7w9y9e | when investing in a mutual fund for retirement, where does the wealth come from? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7w9y9e/eli5_when_investing_in_a_mutual_fund_for/ | {
"a_id": [
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"score": [
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2
],
"text": [
" > where does the wealth come from?\n\nThe companies the fund invests in become more profitable over time, producing greater profits that pay out greater dividends to shareholders, increasing the value of the equity you ho... | [] | [] | [
[],
[]
] | ||
zs6zc | What are the origins of the Signs of the Zodiac? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/zs6zc/what_are_the_origins_of_the_signs_of_the_zodiac/ | {
"a_id": [
"c67b9gq"
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"score": [
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],
"text": [
"The ancient Babylonians - who also invented the 24-hour day, the 60-minute hour, and the 360-degree circle - divided the night sky into 12 sections, to make it easier to say where a planet was as it moved through the night sky (planets were obvi... | [] | [] | [
[]
] | ||
nz83a | Why am I able to smell something I'm no longer around? | Long story short, last night I was at a party where people were smoking weed. I don't smoke but but the smell was very pungent. It's a day later, I'm no longer around it and yet every once in a while I smell a little bit of marijuana. Why is this? Is it psychological or perhaps the smell is physically trapped in the mu... | askscience | http://www.reddit.com/r/askscience/comments/nz83a/why_am_i_able_to_smell_something_im_no_longer/ | {
"a_id": [
"c3d657o"
],
"score": [
2
],
"text": [
"The chemical that's responsible for the smell may very well be deposited onto _anything_ in the vicinity. That includes your body, your clothes, etc."
]
} | [] | [] | [
[]
] | |
ezla7q | Do deaf people experience subvocalization in a similar manner as those who aren't deaf? | askscience | https://www.reddit.com/r/askscience/comments/ezla7q/do_deaf_people_experience_subvocalization_in_a/ | {
"a_id": [
"fgpzuls",
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"text": [
"Their form of that would be instead of imagining the sounds, imagining the lip movements they may have learned from talking if they ever did and visualizing the words, or translation from visual word to what a certain word i... | [] | [] | [
[],
[]
] | ||
1rnf5r | my friend brought over some glass bottled beer that was room temperature and said that if we wrapped them in wet paper towels and put them in the freezer, they would get cold faster. is this true? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1rnf5r/my_friend_brought_over_some_glass_bottled_beer/ | {
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"score": [
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"text": [
"Yes. The water in the paper towels will chi... | [] | [] | [
[],
[],
[],
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] | ||
4lei3h | why currency appreciation is bad? | In my very basic understanding of economics, it seems that having a strong nation currency is good.
Yes, appreciating currency hurts the exports and make imports cheaper, but is this downside that bad?
What are the benefits and drawbacks of appreciating currency? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4lei3h/eli5why_currency_appreciation_is_bad/ | {
"a_id": [
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"score": [
4,
3
],
"text": [
"If you are in a position where your economy depends on cheap exports you would want to keep your currency relatively weak compared to your trading partners. Because if your exports get too expensive, they'll go somewhere els... | [] | [] | [
[],
[]
] | |
5qt88d | how can malware get installed on your computer just by openning up a website and without the user getting notified about a download? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5qt88d/eli5_how_can_malware_get_installed_on_your/ | {
"a_id": [
"dd1y24k",
"dd1y3cv",
"dd1yauv",
"dd1yc5c",
"dd1zzhp",
"dd240t0"
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"score": [
5,
2,
3,
2,
13,
3
],
"text": [
"in general it just shouldn't be possible, everybody knows that this is a big security risk. Usually JavaScript and everything that allo... | [] | [] | [
[],
[],
[],
[],
[
"askdhfawej92nd09a32nd.com"
],
[
"https://googleprojectzero.blogspot.fi/2015/07/one-font-vulnerability-to-rule-them-all.html",
"https://en.wikipedia.org/wiki/Arbitrary_code_execution",
"https://en.wikipedia.org/wiki/Zero-day_\\(computing\\)",
"https://bugs.chromium.... | ||
18fo0d | How are new alloys developed? Is it just trial and error, and hoping you get lucky, or do we have ways to somewhat reliably predict their properties? | I don't know if such a thing exists, but if I were to mix two random metals together (I know alloys can include non-metals), let's say, I dunno, tungsten and niobium, is there anyway to predict the properties of this alloy at a given proportion of one to the other? Obviously things besides the choice in components are ... | askscience | http://www.reddit.com/r/askscience/comments/18fo0d/how_are_new_alloys_developed_is_it_just_trial_and/ | {
"a_id": [
"c8eeehn",
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"score": [
4,
3
],
"text": [
"No it is more trial and error than predictable behavior. What we have done is improved sampling amd testing techniques to really zone in on the characteristics we want. \n\nAlso,how the alloy is treated and processed is just... | [] | [] | [
[],
[
"http://www.technewsdaily.com/6131-mathematical-shortcut-create-new-metals.html"
]
] | |
5nsvbq | sometimes my phone's change with go from say 3% to 7% if i leave it alone for a long time. is it actually regaining charge? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5nsvbq/eli5_sometimes_my_phones_change_with_go_from_say/ | {
"a_id": [
"dce1oxy",
"dce495h"
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"score": [
3,
2
],
"text": [
"Your battery app calculates the remaining battery based on the battery power currently being used (mV) and your usage since it was fully charged.\n\n That's why you can generally do calibration to correctly measure the curre... | [] | [] | [
[],
[]
] | ||
1jcyq3 | what is the process of creating a maze in a cornfield? | Specifically ones when viewed from a distance create an image. From the planning, to actually cutting plants down, how is it done? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jcyq3/eli5_what_is_the_process_of_creating_a_maze_in_a/ | {
"a_id": [
"cbdh4il"
],
"score": [
2
],
"text": [
"I actually saw the process at Roba's farm in NE Pennsylvania. They've done a ton, from Romney and Obama, to planes, to a beehive (last year's).\n\nThey start by planting a large farm of corn. Usually the corn grown isn't sweetcorn, which is edibl... | [] | [] | [
[]
] | |
zlitv | why is new mexico so much more liberal than the other states surrounding it? | It seems to me that if you look at a [political map](_URL_0_) of the United States, states tend to lean either Democrat or Republican in clumps - the west coast and northeast are liberal, the Great Lakes area is somewhat moderate and diverse, and the rest is conservative. Yet for some reason New Mexico is the only stat... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/zlitv/eli5_why_is_new_mexico_so_much_more_liberal_than/ | {
"a_id": [
"c65mtcl",
"c65mw2s",
"c65o3pe"
],
"score": [
2,
4,
2
],
"text": [
"I was wondering the same thing yesterday. Hope you get a good answer.",
"I am not really sure, but I do know this: New Mexico is one of only a few states that are majority-minority (I know that Hawa... | [] | [
"http://elections.huffingtonpost.com/2012/romney-vs-obama-electoral-map"
] | [
[],
[],
[]
] | |
5rfioh | what is fair tax and flat tax? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5rfioh/eli5_what_is_fair_tax_and_flat_tax/ | {
"a_id": [
"dd6srv1",
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"score": [
7,
3
],
"text": [
"A flat tax is one of two things. \n\n1) You charge the same exact tax to every person. So if the tax is $2000 you charge everyone $2000. \n\n2) You charge everyone the same percentage. So everyone is taxed at say 30%. \n\nTh... | [] | [] | [
[],
[]
] | ||
5b21zm | Found a bayonet in the attic, what are these symbols near the hilt? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5b21zm/found_a_bayonet_in_the_attic_what_are_these/ | {
"a_id": [
"d9l6u6u"
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"score": [
6
],
"text": [
"The bayonet is most likely a Japanese Arisaka Bayonet from the World War II era. These markings are some of the ones used by the Toyada Jido Shokki Seisakusho Arsenal (Toyoda Automatic Loom Works, or TALW). Thus, these are the markings of the fa... | [] | [] | [
[]
] | |
fw7qor | Should Nixon's Watergate scandal be seen as a unique and significant cause of the rise of American contempt/distrust towards government, or was it simply part of larger trend? | Sorry for the wordy title. Basically, was it a massive influence in and of itself, or did other events (Pentagon papers, Vietnam war in general, economic troubles in the late 60's/early 70's) drive the rise in distrust?
This is all assuming there actually was a rise in distrust in the 1970's - correct me if this is wr... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fw7qor/should_nixons_watergate_scandal_be_seen_as_a/ | {
"a_id": [
"fmw1t5t"
],
"score": [
3
],
"text": [
"No one answered this? Well, the answer is yes, but, like most things, it is not that simple... What’s important to remember is that Watergate is not an isolated event, but an amalgamation of all of those things you mentioned, and some other thin... | [] | [] | [
[]
] | |
exon6u | Why is nitrogen willing to give an electron? | For instance why is it willing to make NH4+
I don't see how an incomplete p2 orbital would give it more stability. | askscience | https://www.reddit.com/r/askscience/comments/exon6u/why_is_nitrogen_willing_to_give_an_electron/ | {
"a_id": [
"fge35em"
],
"score": [
10
],
"text": [
"The N in ammonia (NH3) has a lone pair of valence electrons. A H+ cation has no valence electrons. The H+ is what brings the charge to the polyatomic ammonium ion when the N shares its lone pair of electrons with the H+ to fill its 1s orbital. ... | [] | [] | [
[]
] | |
34w7t2 | Why were the vast majority of Black Union soldier's deaths caused by disease during the US civil war? | Why were the vast majority of Black Union soldier's deaths caused by disease during the US civil war?
source: _URL_0_ | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/34w7t2/why_were_the_vast_majority_of_black_union/ | {
"a_id": [
"cqyr3ce",
"cqyvxfs"
],
"score": [
3,
2
],
"text": [
"**The soldiers of the U.S. Colored Troops were frequently sent to hostile environments rife with disease,** largely due to the belief that blacks suffered less from yellow fever, malaria and other tropical diseases than whit... | [] | [
"http://www.civilwar.org/education/civil-war-casualties.html"
] | [
[
"http://www.albany.edu/nystatehistory/44/USCT.html#Note12",
"https://books.google.com/books?id=HAUvDHr0gM4C"
],
[]
] | |
1gejo0 | why is paper money difficult to duplicate? | What makes it hard to forge paper money? What properties of paper money make it hard to forge and pass off as real money in everyday transactions? (not buying a car in cash or anything big)
If the answer is that it's not, what percentage of money in circulation is forged? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1gejo0/eli5_why_is_paper_money_difficult_to_duplicate/ | {
"a_id": [
"cajgb8z"
],
"score": [
4
],
"text": [
"US money is made from linen which has a distinctive texture. It has a mixture of red and blue fibers scattered through it, special inks which change color depending on the angle, intricate patterns and smooth shades, micro print, embedded polymer... | [] | [] | [
[]
] | |
1o0fly | how do they determine launch locations for rockets/space shuttles/etc? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1o0fly/eli5_how_do_they_determine_launch_locations_for/ | {
"a_id": [
"ccnqd30"
],
"score": [
6
],
"text": [
"Short answer: That's where the launch pads are.\n\nLong answer: It really depends on what kind of orbit you're trying to accomplish. In general, it's useful to be closer to the equator, because that part of the Earth is spinning the fastest due t... | [] | [] | [
[]
] | ||
2e78fb | Were full-face Viking helmets, like the one found at Sutton Hoo, regularly used in combat? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2e78fb/were_fullface_viking_helmets_like_the_one_found/ | {
"a_id": [
"cjwvn4u",
"cjxb4di"
],
"score": [
7,
6
],
"text": [
"I believe that the Sutton Hoo helmet is Anglo-Saxon and not Viking, Historians believe that it's from the early 7th century and Vikings didn't start raiding England till the late 8th century. \n\nGot my info from the British... | [] | [] | [
[
"http://www.britishmuseum.org/explore/highlights/highlight_objects/pe_mla/h/helmet_from_sutton_hoo.aspx"
],
[]
] | ||
g2tzmd | How does NASA calculate the orbits for missions between Earth and Mars? | As per this subreddit's rules, a cursory google search shows that I should be able to calculate the answer with Kepler's 3rd Law, where the period squared is equal to the semi-major axis cubed. but while this may work on paper, in practice none of the actual Mars missions have followed the theoretical values.
Every tu... | askscience | https://www.reddit.com/r/askscience/comments/g2tzmd/how_does_nasa_calculate_the_orbits_for_missions/ | {
"a_id": [
"fnqhrgx",
"fnqnquy"
],
"score": [
9,
5
],
"text": [
"I'm really not an expert on the maths behind celestial navigation, but I'll give this a go.\n\nThe *patched conic approximation* is useful for many trajectories. This works by dividing the solar system into distinct spheres ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Porkchop_plot",
"https://en.wikipedia.org/wiki/Lambert%27s_problem"
],
[]
] | |
1j07ti | how does losing an eye lead to lack of depth perception? and to what extent does one face it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1j07ti/eli5_how_does_losing_an_eye_lead_to_lack_of_depth/ | {
"a_id": [
"cb9ryl9",
"cb9s6uz",
"cb9xyz9"
],
"score": [
7,
3,
2
],
"text": [
"Hold up a finger in front of your face about 6 inches away. Next, alternate closing one eye (keep each eye open for about a second). You should see your finger sort of jump from side to side.\n\nIf your... | [] | [] | [
[],
[
"http://i.imgur.com/2w4YzsM.png",
"http://i.imgur.com/34d9oID.jpg",
"http://i.imgur.com/SKQlylQ.jpg",
"http://i.imgur.com/se4vr6d.jpg"
],
[]
] | ||
2bjkdq | what is cloudflare's ddos protection is doing?(see picture) | _URL_0_
I'm always intrigued by what it's doing behind the scenes. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bjkdq/eli5_what_is_cloudflares_ddos_protection_is/ | {
"a_id": [
"cj5zm81",
"cjm2uux"
],
"score": [
3,
2
],
"text": [
"The DDoS protection ensures that there are not a lot of connection requests coming from the same place. If there were, it would ignore them so that they didn't hinder the operation of the site. Thats the idea behind it at le... | [] | [
"http://i.imgur.com/nKV5MnM.png"
] | [
[],
[]
] | |
3jobgj | why do smoke detectors require batteries, when they are plugged into the wall? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jobgj/eli5_why_do_smoke_detectors_require_batteries/ | {
"a_id": [
"cuqxysq",
"cuqy113",
"cuqy7cy"
],
"score": [
18,
2,
3
],
"text": [
"Smoke detectors don't get power from the wall. In cases of fire or other situations where you would really want your smoke detector to work, power outages are common. The fire could spread in between... | [] | [] | [
[],
[],
[]
] |
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