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 |
|---|---|---|---|---|---|---|---|---|---|
1niisw | Would galaxies look the same to the naked eye as they do in images taken by Hubble? | [Example: Pinwheel Galaxy image from Hubble.](_URL_0_)
To extrapolate on the title:
If you were traveling through space in a craft with a window, would a galaxy appear as it does in the images we see in telescopes?
I know many of these images are made via long exposures, and wasn't sure if the light from the nebula... | askscience | http://www.reddit.com/r/askscience/comments/1niisw/would_galaxies_look_the_same_to_the_naked_eye_as/ | {
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"I'm no expert on this by any means, but I believe that if you were traveling in a spaceship with a window, you WOULD see some color, however the colors would probably not \"pop\" ... | [] | [
"http://imgur.com/lCIjdw1"
] | [
[],
[
"http://www.reddit.com/r/askscience/comments/pw5un/can_the_human_eye_actually_view_galaxies_and/",
"http://www.reddit.com/r/askscience/comments/1gi1hz/are_all_these_amazing_photos_and_scenes_taken_of/",
"http://www.reddit.com/r/askscience/comments/pge5q/if_you_were_hypothetically_between_galaxie... | |
1x3kwp | If E=mc², does energy have gravity? | I know for most classical measurements like gravities of astronomical objects, energy would be nearly inconsequential to the equation.
But let's say there's a Neptune sized planet in deep space at nearly absolute zero, if it had a near-pass with a star and suddenly rose 200-400 degrees K, would that have any impact o... | askscience | http://www.reddit.com/r/askscience/comments/1x3kwp/if_emc²_does_energy_have_gravity/ | {
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"text": [
"The short answer is yes - the rise in temperature would affect the apparent gravity by a little bit. How little? Well, math!\n\nLet's take your Neptunian p... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Stress-energy_tensor"
],
[],
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"https://en.wikipedia.org/wiki/Kugelblitz_(astrophysics)"
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49tyfg | Who is responsible for the crucifixion of Jesus Christ? | Is there any historical proof that the Romans or Jews made the decision for the crucifixion? Please help. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/49tyfg/who_is_responsible_for_the_crucifixion_of_jesus/ | {
"a_id": [
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"There is much better historical evidence for the crucifixion of Jesus than there is for the vast majority of events of the ancient world. Whether you consider the extant evidence to be \"historical proof\" or not is in the eye of the beholder. FW... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/wiki/faq/religion#wiki_jesus_christ",
"https://www.reddit.com/r/AcademicBiblical/wiki/historicaljesus"
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] | |
61kd5a | how the average person would benefit in no way, or support, repealing laws surrounding the sale of their data, yet it happens anyway? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/61kd5a/eli5_how_the_average_person_would_benefit_in_no/ | {
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"text": [
"You might need to edit that question so that it makes sense. I can only guess at what you are asking.",
"Most people don't know or don't care.\n\nA lot of very large, very rich corporations will benefit. Corporations fun... | [] | [] | [
[],
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] | |
679y7c | Why wasn't a Kurdish mandate created during the aftermath of WW1? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/679y7c/why_wasnt_a_kurdish_mandate_created_during_the/ | {
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"text": [
"An independent Kurdistan was actually planned for and provisions to bring it into existence were included in the Treaty of Sèvres. So while the Treaty did not immediately create an independent Kurdistan, it did provide a relatively straight forwa... | [] | [] | [
[]
] | ||
26svdo | the difference between a deduction and an inference. | Title. People always seem to give really complex answers when asked about the difference.
Edit: Thanks for the explanations! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26svdo/eli5_the_difference_between_a_deduction_and_an/ | {
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"text": [
"A deduction is where you take several statements or facts and say, \"You said you went to medical school, work in a hospital, and you saw a person you referred to as a 'patient'. I deduce that you are a doctor.\" It is an ed... | [] | [] | [
[],
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] | |
2shjqt | why does comcast agree to broadcast commercials for competitors like dish? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2shjqt/eli5_why_does_comcast_agree_to_broadcast/ | {
"a_id": [
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"text": [
"It isn't Comcast that's broadcasting the commercials, it's the television networks. To demand that networks stop running ads for a competitor, Comcast risks losing that network from its channel line up, so it's not really worth the trouble (espec... | [] | [] | [
[]
] | ||
cd7biw | How did English Recency-era fashionable women stay warm in the winter? | Thinking of those beautiful muslin (sp?) dresses we see in Austen adaptations, how did anyone stay warm during a British winter? Long woollen underwear? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/cd7biw/how_did_english_recencyera_fashionable_women_stay/ | {
"a_id": [
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"text": [
"On the one hand, satirists of the time [liked to depict women in thin, clinging muslin gowns all year round](_URL_0_), accessorized with only a shawl or spencer (a short jacket), allegedly showing a true practice. According to these men, women di... | [] | [] | [
[
"http://findit.library.yale.edu/catalog/digcoll:976311"
]
] | |
4vlh7v | My history textbook briefly mentioned something very interesting... | "in the 1570s and 1580s, Elizabeth's troops crushed the Irish uprising with terrible ferocity, inflicting unspeakable atrocities upon the native Irish people."
What is this referring to, and what were these unspeakable atrocities? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4vlh7v/my_history_textbook_briefly_mentioned_something/ | {
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"text": [
"This is in reference to the Desmond Rebellions. These were a series of rebellions in the Irish province of Munster that occurred from 1569 to 1573 and again from 1579 to 1583. It is the second rebellion that your textbook is likely referencing.\n... | [] | [] | [
[]
] | |
z8358 | why oil and gold control world economy | Why is the world economy dependent on prices of oil and gold and not something else | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/z8358/eli5_why_oil_and_gold_control_world_economy/ | {
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"text": [
"Transport is an important part of a country's economy. If all the oil were to suddenly disappear in your country, it would be a major problem.\n\n* Food, goods, materials - they wouldn't show up in the stores\n* Most people... | [] | [] | [
[],
[]
] | |
2vrhx0 | How can you proof that minus one times minus one is one? | askscience | http://www.reddit.com/r/askscience/comments/2vrhx0/how_can_you_proof_that_minus_one_times_minus_one/ | {
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"text": [
"Taken from [here](_URL_0_):\n\n Let a and b be any two real numbers. Consider the number x defined by\n x = ab + (-a)(b) + (-a)(-b)\n \n We can write\n x = ab + (... | [] | [] | [
[
"http://mathforum.org/dr.math/faq/faq.negxneg.html"
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a8eta7 | I want to start writing about history as a hobby. How do I not get everything wrong? | This is mostly just for my own gratification, but I'm planning on starting to write a blog, or producing youtube videos about history. It's a subject that interests me and I like writing. So in an effort to avoid ending up on /r/badhistory, how to I make sure I'm being accurate? Mostly what I'm concerned with is recogn... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a8eta7/i_want_to_start_writing_about_history_as_a_hobby/ | {
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"text": [
"What sort of topics are you interested in? That may go some way in helping you find the lay of the land and avoid obvious pitfalls.",
"Your best bet is to pay an expert cons... | [] | [] | [
[],
[],
[
"https://onlinelibrary.wiley.com/doi/10.1111/j.1468-0254.2005.00151.x",
"https://academic.oup.com/ehr/article-abstract/120/486/424/396203",
"https://600transformer.blogspot.com/2015/01/an-old-review-of-bachrachs-early.html",
"https://www.jstor.org/stable/10.1086/530670?seq=1#page_scan_... | |
ci3sbf | what exactly happens when old elastic gets crusty and loose ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ci3sbf/eli5_what_exactly_happens_when_old_elastic_gets/ | {
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"This is a chemical process. To understand it you have to first understand a bit about the chemical structures that makes elastic stretchy.\n\nAll polymer plastics consist of long molecule chains. Think really really long pieces of string that get... | [] | [] | [
[]
] | ||
2uj81c | Why didn't Germany use submarines to alleviate the British blockade during WWI? | It seems like, rather than trying to create a counter-blockade of the British Isles (and provoking the United States in the process), Germany might have been better served by attacking the British Navy itself.
Apologies if there's an answer somewhere on the subreddit already. I found questions about the blockade, but ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2uj81c/why_didnt_germany_use_submarines_to_alleviate_the/ | {
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"The German navy did attack the British fleet with submarines from time to time, but the British blockade of Germany was what's called a \"distant blockade.\" Essentially, the main part of the British ... | [] | [] | [
[],
[
"http://uboat.net/wwi/types/index.html?type=U+151",
"Uboat.net"
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[]
] | |
6bopoh | what does paying my tv licence actually pay for these days? (uk) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6bopoh/eli5what_does_paying_my_tv_licence_actually_pay/ | {
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"The TV licence fee is a tax collected by the BBC and primarily used to fund the radio, television and online services of the BBC itself."
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[]
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hqdj5 | What is the physical interaction taking place between a photon and an atom that causes stimulated emission? | In stimulated emission, an incident photon causes relaxation of an excited atom. The atom then emits a second photon that has the same phase and wavelength as the first. My question is, what is the physical interaction between the first photon and the excited atom that takes place? Do interactions between the electr... | askscience | http://www.reddit.com/r/askscience/comments/hqdj5/what_is_the_physical_interaction_taking_place/ | {
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"text": [
"This is classic perturbation theory problem in a first or second course on quantum mechanics.\n\nThe simple way to approach it is to think of the atom as a being immersed in an electric field which varies sinusoidally in tim... | [] | [] | [
[],
[]
] | |
1z25y7 | making money on a falling stock market | I briefly heard of a strategy where people actually make money from a fall of prices in the stock market. What is that strategy is, and can you explain it? I think its called "under cutting" or "under selling".
Not really sure of the exact name. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1z25y7/eli5making_money_on_a_falling_stock_market/ | {
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"Short selling.\n\nThe \"normal\" way of doing things is to buy a stock, wait for the price to go up, and sell it. Short selling involves selling stock, waiting for the price to go down, and then buying... | [] | [] | [
[],
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3rire3 | I understand that back carrying a sword is commonly understood as rubbish, but are there any examples in history of people doing this during war? | Question is not bound to a certain time period.
The reason I ask is because people who oppose this idea in an argument mostly prove their point more with common sense (as in "swords are to long to be drawn from the back" for example) as with hard facts.
I too don't think it is very useful to carry a sword on the back... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3rire3/i_understand_that_back_carrying_a_sword_is/ | {
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"text": [
"Unfortunately the period of time during which humans carried swords happens to cover all of human history, so my answer must necessarily be in brief.\n\nSwords, despite the mythology that has risen around them, tended to be sidearms. Spears were... | [] | [] | [
[]
] | |
2ltfn9 | would it be possible to knock an asteroid into our atmosphere, and lock it in like a satellite? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ltfn9/eli5_would_it_be_possible_to_knock_an_asteroid/ | {
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"If it were in our atmosphere, air resistance would decay its orbit pretty quickly and then it would just fall to Earth.\n\nBut capturing an asteroid and inserting it into an orbit outside the atmosphere seems plausible eventually, if not practica... | [] | [] | [
[]
] | ||
5n6tap | Is there a distinction to be made between a German soldier in World War II and a Nazi soldier? | Was the eugenics program common knowledge among German armed forces? Did the project create divisive internal politics? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5n6tap/is_there_a_distinction_to_be_made_between_a/ | {
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" > Is there a distinction to be made between a German soldier in World War II and a Nazi soldier?\n\nThe argument about whether or not [these](_URL_1_) are \"German\" soldiers of \"Nazi\" soldiers is one which comes up far too often, for numerous... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3hw2fv/is_the_use_of_nazi_as_a_general_demonym_for/cub4zwb/",
"https://upload.wikimedia.org/wikipedia/commons/4/41/Bundesarchiv_Bild_101I-217-0465-32A,_Russland,_Soldaten_auf_dem_Marsch.jpg",
"https://www.reddit.com/r/AskHistorians/comments/5799li/did_t... | |
3t9uwy | what could happen if a government stopped printing money? | Maybe just for a period of time, such as one year.
Hope this isn't too hypothetical, I'd just like to know the possible effects. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3t9uwy/eli5_what_could_happen_if_a_government_stopped/ | {
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"Rules say please don't speculate so what DEFINITELY would happen is that (I'll say U.S. currency since that's where I'm from) the dollar would become stronger over that period of time. Manufacturing cos... | [] | [] | [
[],
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"https://www.ecb.europa.eu/home/html/index.en.html",
"http://www.federalreserve.gov",
"http://www.bankofengland.co.uk/Pages/home.aspx"
],
[]
] | |
35mtb1 | how do countries with extensive maternity/paternity leave cover those individuals' job positions until they come back to work? | And how do companies/business owners feel about it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35mtb1/eli5_how_do_countries_with_extensive/ | {
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"They hire a temporary worker, or divide those tasks between existing employees.\n\nEmployers probably find it to be a chore, but there are lots of other chores, like vacations, benefits, and safe work environments, they there are accustomed to do... | [] | [] | [
[]
] | |
4a7ex8 | why do people on reddit put things like "edit: spelling mistakes" when they could have just corrected them and not told everyone about it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4a7ex8/eli5_why_do_people_on_reddit_put_things_like_edit/ | {
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"Comments that are edited after a certain period of time have an asterisk next to the posting time to indicate they are edited. Now... | [] | [] | [
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1civgn | Why do some sounds cause physical discomfort to our ears? Is it because they are actually damaging them? | I'm talking about specific sounds like fingernails scraping a chalkboard or metal utensils scraping metal pans and pots, not discomfort caused by high volume. Furthermore, the sound of metal scraping metal can make me go crazy, whereas nails scraping chalkboard is actually OK for me. Why this variance between people? | askscience | http://www.reddit.com/r/askscience/comments/1civgn/why_do_some_sounds_cause_physical_discomfort_to/ | {
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"Just a reminder that... | [] | [] | [
[],
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"http://www.scientificamerican.com/article.cfm?id=why-is-the-sound-of-fingernails-on-blackboard"
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[
"http://psychcentral.com/news/2012/10/11/why-we-cringe-at-unpleasant-sounds/45935.html",
"http://www.lifeslittlem... | |
1l4pqs | why is the united states considering getting involved in the syrian conflict? | Like, how would the USA benefit? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1l4pqs/eli5_why_is_the_united_states_considering_getting/ | {
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"text": [
"I'm not sure the US would directly benefit.\n\nBut we have a general motivation to restrict the use of chemical weapons and we have stated that we would take some sort of action if... | [] | [] | [
[],
[],
[],
[]
] | |
buf155 | When it was discovered that Ronald Reagan sold weapons to Iran, in defiance of American Law, why wasn’t he impeached? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/buf155/when_it_was_discovered_that_ronald_reagan_sold/ | {
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"text": [
"A number of congressional Democrats wanted to pursue impeachment, but there were several reasons why they ultimately decided against it:\n\n**Domestic Politics:** \n\nPolitically, impeachment had th... | [] | [] | [
[],
[],
[
"https://www.brown.edu/Research/Understanding_the_Iran_Contra_Affair/profile-reagan.php",
"https://www.brown.edu/Research/Understanding_the_Iran_Contra_Affair/about.php",
"https://www.brown.edu/Research/Understanding_the_Iran_Contra_Affair/documents.php"
]
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3vws4a | Did the Gestapo really say "Good luck" in english to catch spies or escaped PoWs? | So after watching The Great Escape - my favorite movie :) - again I was wondering if that trick was ever *actually* used?
[Reference to movie line](_URL_0_) | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3vws4a/did_the_gestapo_really_say_good_luck_in_english/ | {
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"text": [
"It's on every year, and Gordon Jackson falls for it every. single. time. Maybe this year he won't. Maybe this year Steve McQueen will make it over the wire.\n\nAnyway. \n\nThe film is based on the book of the same name by Paul Brickhill, who was ... | [] | [
"https://www.youtube.com/watch?v=o0wNl66tT3Q"
] | [
[
"http://theescapeline.blogspot.co.uk/2012/03/good-luck.html",
"http://www.dailymail.co.uk/news/article-1222565/He-shot-hero-Great-Escape-cold-blood-But-Nazi-DIDNT-deserve-hang.html"
]
] | |
1fk2n1 | How did Dante Alighieri's "The Divine Comedy" change the way we view hell? How was hell viewed before its publication? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1fk2n1/how_did_dante_alighieris_the_divine_comedy_change/ | {
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"text": [
"I'll be taking a good bit of this from my experience as clergy, so take what I say about contemporary views of Hell with a grain o... | [] | [] | [
[],
[
"https://www.google.com/search?q=notre+dame+des+fontaines+la+brigue&safe=off&tbm=isch&tbo=u&source=univ&sa=X&ei=8S6sUd-iOuPO0gGs7YHQBA&ved=0CEUQsAQ&biw=902&bih=516",
"http://500px.com/photo/18856437",
"http://fr.wikipedia.org/wiki/Chapelle_Notre-Dame-des-Fonta... | ||
3ps44k | Could someone help me identify this tool? | I am a high school science teacher. I found this tool while cleaning out the lab room. The top cone part is made of copper and is engraved with the text "made in west Germany". The silver blade part is not sharp, and swivels in and out of a groove on the copper cone. Help me identify this tool, Reddit!
_URL_0_ | askscience | https://www.reddit.com/r/askscience/comments/3ps44k/could_someone_help_me_identify_this_tool/ | {
"a_id": [
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"text": [
"We have one of these in my lab. It's for making a sharp end to a piece of tubing. Like [this](_URL_0_), but smaller and smoother.\n\nYou insert the cone into the end of the tube, pull the blade closer and spin and the blade will shave off parts ... | [] | [
"http://imgur.com/xkZb8Xe"
] | [
[
"http://www.testecvw.com/carl/rocket/RocketAssembly02.jpg"
]
] | |
3nyhzm | Which States of the Union didn't join of their complete free will? | Just considering how a lot of other political unions got started; I can think of Hawaii as a notable region that got annexed. Considering how so many of them are large and plentiful enough to be thriving countries in their own right, were any others given ultimatums, outright annexed, etc? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3nyhzm/which_states_of_the_union_didnt_join_of_their/ | {
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[]
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274336 | why do guitars often get out of tune in a higher pitch? wouldn't the strings tend to get looser? | I notice if I don't play my guitar for a few weeks the strings are all a half step higher. how can that happen without tighening the strings. I would expect the strings to loosen rather than tighten if left alone for s week ar two. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/274336/eli5_why_do_guitars_often_get_out_of_tune_in_a/ | {
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"text": [
"When strings stretch, they get thinner, which results in higher pitch. Be sure to properly stretch your strings after putting on a new set and you should have better pitch retention."
]
} | [] | [] | [
[]
] | |
4az3qo | How can a molecule be polar, but hydrophobic? | Lookin' at you, PLA. | askscience | https://www.reddit.com/r/askscience/comments/4az3qo/how_can_a_molecule_be_polar_but_hydrophobic/ | {
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"If a molecule has a polar and non-polar end, it has the ability to form micelles, which, when their hydrophobic ends point outwards are hydrophobic. As for PLA, in my undergrad experience, it looks as if it's not polar, as t... | [] | [] | [
[],
[
"http://pubs.acs.org/doi/abs/10.1021/jp4029968"
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6qgkk3 | why do we have to pee 'on' things? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6qgkk3/eli5_why_do_we_have_to_pee_on_things/ | {
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"It's likely from old instincts of marking territory. Not only do you want others to know you're around but you want to them to know you're big and bad, that's... | [] | [] | [
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70pe2b | why does the military use mostly propellar aircrafts for cargo instead of jets? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/70pe2b/eli5_why_does_the_military_use_mostly_propellar/ | {
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"Prop-driven aircraft are generally cheaper to produce and maintain. Jets give obvious advantages for smoothness, speed, and altitude. But for a cargo plane, ability to land/take off in a shorter distance, to fly slower an... | [] | [] | [
[],
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1cv18r | How were the Triassic-Cretaceous periods able to support such large land animals versus today? Does being ~3°C-4°C degrees warmer really make that big a difference? | Just pulling the average temperature cited on Wikipedia: [Triassic](_URL_0_), [Jurassic](_URL_2_), [Cretaceous](_URL_1_) | askscience | http://www.reddit.com/r/askscience/comments/1cv18r/how_were_the_triassiccretaceous_periods_able_to/ | {
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"The difference does make a difference to species who aren't evolved to cope with it. The numerous mass extinctions throughout geological time occurred because of natural processes or catastrophes and as such the climate chan... | [] | [
"http://en.wikipedia.org/wiki/Triassic",
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"http://en.wikipedia.org/wiki/Jurassic"
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[],
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"http://blogs.scientificamerican.com/tetrapod-zoology/files/2011/12/Sander-et-al-2011-gigantism-flow-chart-Dec-2011-tiny.jpg"
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7nx99j | how does a split-brain work when the corpus callosum connecting the two brain halves has been removed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7nx99j/eli5_how_does_a_splitbrain_work_when_the_corpus/ | {
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"While the corpus callosum itself has been severed, both sides of the brain still have their connections to the rest of the body. As a result, activities originating in one side of the brain but not the other can't really int... | [] | [] | [
[
"https://www.nobelprize.org/educational/medicine/split-brain/background.html"
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2i20ou | if water pressure behind household taps is continuous, why doesn't the pressure build up and up until the taps are forced off? | I wondered this specifically because if a tap is removed while water to a house is on, there is usually a massive ongoing geyser of water until the water is turned off. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2i20ou/eli5_if_water_pressure_behind_household_taps_is/ | {
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"Water is noncompressible. And it's not like there is a compressor or even a pump behind it. It's just gravity. Weight is causing the pressure. That's why you have water towers or water tanks up on a hill.",
"It's a cons... | [] | [] | [
[],
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] | |
atsr4j | Battleships on both sides of the war were commonly bristling with anti-aircraft weaponry, yet many fell victim to enemy aircraft anyways. So how effective was ship-based anti-aircraft weaponry really? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/atsr4j/battleships_on_both_sides_of_the_war_were/ | {
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"Some useful past discussion of this by u/When_Ducks_Attack and u/eighthgear and u/Domini_canes in _URL_0_\n\nIn that discussion, it's noted that a little over 1/3 of the enemy aircraft that attacked US warships and came into range of their anti-a... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/33sa2x/effectiveness_of_shipborne_antiair_in_wwii/"
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31cwr3 | i gave two pints of blood and saline was pumped back into me. how does my body know to make extra rbcs to replace them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/31cwr3/eli5_i_gave_two_pints_of_blood_and_saline_was/ | {
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"When your kidneys notice that they aren't getting enough oxygen, as is the case when there aren't enough red blood cells, they produce a hormone called [erythropoetin](_URL_0_), or EPO. EPO tells your bone marrow to generate new red blood cells.... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Erythropoietin"
]
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92x84c | How did in the past Ukraine and Belarus become known as "Little Russia" and "White Russia", and why did those terms fall out of use? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/92x84c/how_did_in_the_past_ukraine_and_belarus_become/ | {
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"text": [
"Could you clarify your question further? For example, are you referring to English usages? Belarus means White Russia, and it is literally called White Russia in some languages. ... | [] | [] | [
[],
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"http://www.philology.ru/linguistics2/klimov_i-01.htm"
],
[
"https://www.reddit.com/r/AskHistorians/comments/8eopyz/why_belarus_called_as_white_russia/"
],
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1kvtaa | Does counting "one-one thousand, two-one thousand..." after seeing a flash of lightning until you hear thunder actually give you a good estimate how far away you are from the flash? | askscience | http://www.reddit.com/r/askscience/comments/1kvtaa/does_counting_oneone_thousand_twoone_thousand/ | {
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"Yes. It takes sound approximately 5 seconds to travel 1 mile. L... | [] | [] | [
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88qoi0 | how did a rocket with the computing power of a calculator get people to and from the moon? | I can’t even get my WiFi to work, but we got to the moon with IT that had less computing power than some toasters today. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/88qoi0/eli5_how_did_a_rocket_with_the_computing_power_of/ | {
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"Because almost none of the mission was controlled by that computer. It had fairly simple tasks to do. Most of the mission was pre-computed, and further computing was done on the g... | [] | [] | [
[],
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"https://upload.wikimedia.org/wikipedia/commons/9/98/Apollo_Command_Module_Main_Control_Panel.gif"
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[],
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"https://en.wikipedia.org/wiki/HP-15C#/media/File:Hp15c.jpg"
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4ujuv9 | how come we can't send a spaceship to other planets and back? | With all the different types of advanced propulsion techniques that are available e.g. solar sails/ion blasters/etc
They're sending probes to other planets and i understand they just cant send someone there without knowing what to expect, but can't we just get *close*?... And then come back? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ujuv9/eli5how_come_we_cant_send_a_spaceship_to_other/ | {
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"text": [
"We could. But: \n\nThere are still several unsolved problems, mostly involving a deadly buildup of radiation. Closely related to the problem of space being really REALLY big and it... | [] | [] | [
[],
[],
[],
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73hf8k | how do mathematicians figure out absurd odds? | How do mathematicians figure out absurd odds, such as the chances of being hit my lighting are 1 in x? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/73hf8k/eli5_how_do_mathematicians_figure_out_absurd_odds/ | {
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"text": [
"They don't really \"figure them\" out, instead they measure them. \n\nTaking your example: Around 300 people in the US tend to be struck by lightning on an annual basis (according to medical treatment data), putting any given individual's chance... | [] | [] | [
[]
] | |
401iq4 | Which Roman figure is this marble bust of, it's been in my family decades.. | I have always wondered whom this bust represents.
Thank you for any help.
_URL_0_ | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/401iq4/which_roman_figure_is_this_marble_bust_of_its/ | {
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"text": [
"It certainly looks like a bust of a younger Octavian, like those found [here](_URL_1_), [here](_URL_2_), and [here](_URL_0_). But I could be wrong. ",
"I just looked up Octavian... The chest plate is identical.. Thank yo... | [] | [
"http://imgur.com/LAEcqdY"
] | [
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"http://www.egyptorigins.org/images/augustus.jpg",
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"https://s-media-cache-ak0.pinimg.com/236x/a7/c1/cc/a7c1cce314a6d4da12ea3b70c4051933.jpg"
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12vsot | Why feature of sound causes words or instruments to sound so different. | Why do sounds not all sound like this: _URL_0_
I understand frequency determines pitch and amplitude determines loudness. What changes the 'timbre' of a sound eg. a clarinet vs a flute.
How do we distinguish different words? What physical feature of sound waves determine the sounds of the different vowels for instanc... | askscience | http://www.reddit.com/r/askscience/comments/12vsot/why_feature_of_sound_causes_words_or_instruments/ | {
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"text": [
"I asked an almost identical question [here](_URL_0_)\n\nThe property is due to the shapes of the waves made by different instruments/materials. The guys who replied to me explained it pretty well :)",
... | [] | [
"http://www.youtube.com/watch?v=R0A72A-c8EU&feature=related"
] | [
[
"http://www.reddit.com/r/askscience/comments/12mbln/why_do_sounds_sound_different_even_if_they_have/"
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[],
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"http://www.youtube.com/watch?v=i_0DXxNeaQ0"
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euwcww | if we are constantly intaking more calories than we can use, why aren't we all obese? | Edit: Been asked for clarification. I often hear stuff like "that burger is 500 calories, it'll take an hour to work it off"! If this is true, shouldn't we all be slowly gaining weight over the course of our lives? I'd think that, on average, a normal person will eat more calories than they can work off. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/euwcww/eli5_if_we_are_constantly_intaking_more_calories/ | {
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"score": [
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"text": [
"People that do this will eventual be, can I ask clarification on your question?",
"Because there are people w... | [] | [] | [
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96fz8q | Historically what made the Jesuits so hated but not other Catholic orders like Franciscans, Dominicans and Benedictines? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/96fz8q/historically_what_made_the_jesuits_so_hated_but/ | {
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"text": [
"Before listing off the reasons why Jesuits were despised by their competitors and opposition, I'd like to note that going into the early seventeenth century, the Jesuits actually enjoyed a pretty respectable reputation am... | [] | [] | [
[],
[]
] | ||
arukw7 | how does blood come back to the heart? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/arukw7/eli5_how_does_blood_come_back_to_the_heart/ | {
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"text": [
"Put very simply.....Its a closed system. The heart pushes it in a huge loop back to itself. Valves in veins prevent it flowing backwards and or pooling.",
"Think of the heart as a pump, your veins a... | [] | [] | [
[],
[],
[]
] | ||
1xjro3 | I saw recently we're going to be having companies mining on the moon for Helium-3. Why, what does it do? | askscience | http://www.reddit.com/r/askscience/comments/1xjro3/i_saw_recently_were_going_to_be_having_companies/ | {
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"text": [
"[Fusion energy](_URL_0_). Controlled fusion hasn't been achieved yet, but we've been really close to achieving it for about 40 years, or so I've been told.",
"Not unless the UN has changed their min... | [] | [] | [
[
"http://www.esa.int/Our_Activities/Preparing_for_the_Future/Space_for_Earth/Energy/Helium-3_mining_on_the_lunar_surface"
],
[],
[]
] | ||
5p98ps | Can birth defects be detected in eggs or sperm? | askscience | https://www.reddit.com/r/askscience/comments/5p98ps/can_birth_defects_be_detected_in_eggs_or_sperm/ | {
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"Generally speaking, no.\n\nFirst of all, there are many things that happen after fertiliz... | [] | [] | [
[],
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[],
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"https://en.wikipedia.org/wiki/Polar_body_biopsy"
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9x6pmv | Is evolution relative to lifespan? | So humans (and other animals) take many many years to evolve, which is influenced by many things such as environment. But, all else equal, does an organism's life span influence the rate it evolves?
Under controlled conditions, could we observe significant evolution for something like a fly? | askscience | https://www.reddit.com/r/askscience/comments/9x6pmv/is_evolution_relative_to_lifespan/ | {
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"text": [
"Evolution absolutely is relative to lifespan. Evolution is mathematical. Every generation has selective pressures act on it that affect which individuals are best able to survive and reproduce. The more... | [] | [] | [
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"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3038716/"
],
[
"https://en.wikipedia.org/wiki/E._coli_long-term_evolution_experiment"
],
[]
] | |
5jejra | When we blow air out of our mouths, to either cool down soup or fog up a mirror, are we actually "controlling" the temperature of the air coming out? | askscience | https://www.reddit.com/r/askscience/comments/5jejra/when_we_blow_air_out_of_our_mouths_to_either_cool/ | {
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"When you blow to cool things down part of the air comes from your lungs, but a greater part is pulled from the surrounding air by the vacuum you create blowing. When you blow to heat something up you get much closer and try ... | [] | [] | [
[
"https://www.youtube.com/watch?v=UujAMPv3y-A"
],
[]
] | ||
1vjz64 | Why is RISUG (or Vasalgel or other similar male birth control) taking so long to be broadly available? | I remember first hearing about this method of male birth control at least 8-10 years ago. There is also Vasalgel.
Basically it's easily reversible, you get an outpatient injection in your balls that takes a few minutes, and out of the 250 original trial members, it didn't work in only 1 and that turned out to be impr... | askscience | http://www.reddit.com/r/askscience/comments/1vjz64/why_is_risug_or_vasalgel_or_other_similar_male/ | {
"a_id": [
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"text": [
"From Googling around, it seems that in India (where RISUG was originally developed), it's been stuck in clinical trial limbo for a number of reasons (including [difficulty in getting volunteers](_URL_1_)). Vasalgel is essentially the same treatme... | [] | [] | [
[
"http://www.parsemusfoundation.org/vasalgel-home/",
"http://www.webcitation.org/5zHEacvXH",
"http://en.wikipedia.org/wiki/Fluoxetine"
]
] | |
2tn8vk | why do my cats always seem required to use the litterbox immediately after i clean it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tn8vk/eli5_why_do_my_cats_always_seem_required_to_use/ | {
"a_id": [
"co0ip4u"
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"score": [
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"text": [
"They are marking their ownership of that box with their scent/pee/whatever. By cleaning it, you \"erased\" their scent from the box and therefore their ownership of that territory."
]
} | [] | [] | [
[]
] | ||
2477qg | how are canals finished? | When a canal is dug how do they complete the canal without the canal quickly flooding and damaging/harming equipment and people? Do they use explosives? If so how would canals be finished pre-explosive. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2477qg/eli5_how_are_canals_finished/ | {
"a_id": [
"ch4cvf4"
],
"score": [
2
],
"text": [
"From what I've seen, they basically start in the middle and work towards each end. There will be water that accumulates in the canal as they dig it. This is managed by large pumps. Once they get to the end, they will take their equipment out o... | [] | [] | [
[]
] | |
39htzq | - what is happening when you can "feel" someone looking at you, and you get the heebie-jeebies? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/39htzq/eli5_what_is_happening_when_you_can_feel_someone/ | {
"a_id": [
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"score": [
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"text": [
"Looking at you.. like this?\n\n_URL_0_",
"Humans, like many mammals, are extremely good at noticing eyes that are looking at us. Eye contact is very important in communicating, so much so that we can impart a lot of info... | [] | [] | [
[
"http://i.imgur.com/GOIz8mj.jpg"
],
[]
] | ||
31gwvi | Are modern Egyptians really related to the Egyptians of ancient times? | Recently, I read a news article where an Egyptian guy is all like "We Egyptians are so awesome. We built the pyramids, y'know?". My first thought was that he was a bit foolish for claiming to be related to the ancient Egyptians. I'm Dutch myself and I know that during Napoleonic times the Dutch republic was renamed the... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31gwvi/are_modern_egyptians_really_related_to_the/ | {
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23,
10,
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"text": [
" > In modern times however, it's known that the Dutch didn't descend from the Batavians due to many migrations throughout the ages. \n\nHow is this known? Or rather, what are you sources that the m... | [] | [
"http://en.wikipedia.org/wiki/Batavian_Republic",
"http://en.wikipedia.org/wiki/Egyptians"
] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/2iquu7/are_there_any_elements_of_ancient_egyptian/",
"https://www.reddit.com/r/AskHistorians/comments/20n95n/are_modern_day_egyptians_racially_distinct_from/",
"https://www.reddit.com/r/AskHistorians/comments/2nzuuc/understanding_that_race_is_a_cu... | |
22a9fw | Do humans have the largest offspring in proportion to the parent? | For instance, a female giant panda is about 5-6 feet tall when on hind legs and 200 pounds, but the cub can fit in the palm of your hand. Proportionally this offspring is very small. But are humans the largest? | askscience | http://www.reddit.com/r/askscience/comments/22a9fw/do_humans_have_the_largest_offspring_in/ | {
"a_id": [
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"text": [
"Since you don't narrow this down to any particular taxa -\n\n > Kiwi eggs can weigh up to one-quarter the weight of the female. \n\n(The equivalent of a 120-pound woman having a 30-pound baby.)\n\n > The kiwi lays the biggest egg in propor... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Plesiosauria#Reproduction",
"http://en.wikipedia.org/wiki/Polycotylus#Reproduction",
"http://en.wikipedia.org/wiki/Kiwi#Description"
]
] | |
w873v | Is opening eyes underwater harmful? | Is there any scientific evidence of opening eyes underwater being harmful in any way, infections aside?
Does chlorinated, sea or other type of water have any negative effect on eyes or vision? | askscience | http://www.reddit.com/r/askscience/comments/w873v/is_opening_eyes_underwater_harmful/ | {
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"Do you mean lasting effects or temporary? \n\nAdding to the question, how worried would you have to be about micro-organisms? I know the immune system kicks ass at killing them, but would they be the biggest threat? ",
... | [] | [] | [
[],
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"http://www.ncbi.nlm.nih.gov/pubmed/21885333",
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"http://www.ncbi.nlm.nih.gov/pubmed/17384776"
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4x5tem | why are there about a thousand species of spiders but only one human species? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4x5tem/eli5_why_are_there_about_a_thousand_species_of/ | {
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"I'm no expert, and maybe I am totally misunderstanding, but there are what I feel are \"species\" of humans, though I wouldn't use that term.\n\nAfrican, European, Asian, aboriginals, Native American, Hispanic, and I'm sure there are more..."
]... | [] | [] | [
[]
] | ||
72ou7r | how does the title of a classical music work? why are they so long? | For example:
_URL_0_ | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72ou7r/eli5_how_does_the_title_of_a_classical_music_work/ | {
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"text": [
"They're really long because they use a lot of descriptors so you can easily identify it. There's an opus number, the actual title, a subtitle or a nickname (like \"Eroica\" or \"Pastoral\"), and then a lot of descriptors, u... | [] | [
"https://www.youtube.com/watch?v=2PGuStNiMP4&index=1&list=PLQ5erSrani14-1o8FPZ4MEX0PW_Fd-Of9"
] | [
[],
[]
] | |
1p0oc2 | What color would the sky and ocean be in a planet with a red sun? | How much would the colors change because of the sun? Would sunsets or the moon be colored differently? Basically, how would the day to day go, if say, I were on Krypton. | askscience | http://www.reddit.com/r/askscience/comments/1p0oc2/what_color_would_the_sky_and_ocean_be_in_a_planet/ | {
"a_id": [
"ccxmctg"
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"text": [
"It is the atmosphere that determines the color of the sky, not the color of the sun. Gasses in the atmosphere scatter blue light more than other colors, so the sky appears blue. When the sun is setting/rising, the color is darker because the ligh... | [] | [] | [
[]
] | |
7wjfvs | why ships are shaped like a v and not square | Wouldn't a squared bottom displace more water with the same height allowing the ship to take more cargo/navigate shallower waters? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7wjfvs/eli5_why_ships_are_shaped_like_a_v_and_not_square/ | {
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"text": [
"Yes. And many slow or towed floating platforms, like barges, have exactly that configuration. But if you want a vessel to be able to move through the water with any sort of speed, then a V shape is best... | [] | [] | [
[],
[],
[]
] | |
12q0jz | Why are Dumas' heroes called musketeers when they use a rapier, not a musket? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/12q0jz/why_are_dumas_heroes_called_musketeers_when_they/ | {
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"Because that's what they were, the rapier was a sidearm. \n\nThe unit that inspired Dumas is covered here at wiki:\n\n_URL_0_",
"Answered your question in another thread but anyway:\n\nBecause Duma... | [] | [] | [
[
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],
[
"http://en.wikipedia.org/wiki/Musketeers_of_the_Guard",
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"http://en.wikipedia.org/wiki/Charles_de_Batz-Castelmore_d%27Artagnan",
"http://en.wikipedia.org/wiki/Henri_d%27Arami... | ||
1vbauo | why do sometimes people not realize they have been shot until someones either tells them or they see the injury for themselves? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vbauo/eli5_why_do_sometimes_people_not_realize_they/ | {
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"Heard about it [here](_URL_0_).",
"The reason for it (yes it does happen) is a mixture of adrenaline and nerve damage. When a person has been firing a gun a lot the gun, barrel... | [] | [] | [
[
"https://www.youtube.com/watch?v=lmJI8Iw_PdM"
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[],
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4dgzgw | A new historian needs help. | I am a part of an Air Force squadron and I was just assigned as the historian and was wondering if anyone had any direction on how to logically maintain and organize this information.
Edit: I am starting from scratch and have not been given any real direction. I was told to keep track of the big events and what our un... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4dgzgw/a_new_historian_needs_help/ | {
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"text": [
"What kind of information fo you have? What are you supposed to be doing with it?",
"Are you starting from scratch? Have you any records left over from anywhere else? Have you tried contacting the Air Force Historical Res... | [] | [] | [
[],
[]
] | |
8yrz27 | how do smartphone fingerprint sensors work so quickly when sensors used for visas at embassies are back-lit and take longer? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8yrz27/eli5_how_do_smartphone_fingerprint_sensors_work/ | {
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"text": [
"Your smartphone is reading your print vs a small library of a couple of prints you gave it. Those other computers as reading your print and have to compare it to all of the prints it has access to. So ... | [] | [] | [
[],
[],
[]
] | ||
2lsk52 | If I were in a ship traveling the speed of light and the ship had it's headlights on, would the speed of the light emitted be doubled or would the photons just "get stuck" on the ship? | askscience | http://www.reddit.com/r/askscience/comments/2lsk52/if_i_were_in_a_ship_traveling_the_speed_of_light/ | {
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"This is a very common question, and the underpinning of relativity. \n\n1) Your ship can't travel at the speed of light, but let's say it's going _very close_ to the speed of light.\n\n2) The photons w... | [] | [] | [
[],
[],
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3gbm4g | Do our brains process thoughts information at different speeds? If so, can we experience events at different rates? | I know this is kind of a weird/dumb question, but let's say someone had a super fast brain that could work at incredible speeds. Could they actually experience things slower, with more detail? This came up in a discussion with my friends about time, and how we could all be experiencing the passage of time differently. | askscience | http://www.reddit.com/r/askscience/comments/3gbm4g/do_our_brains_process_thoughts_information_at/ | {
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"I have the same question. Maybe our experience of time is somehow determined by what we focus on. People who give the same amount of attention to something (would need to be quantified) could have a similar subjective experience of the passage of... | [] | [] | [
[]
] | |
31wii1 | How famous were people like Mozart or Beethoven in their age? | Comparing with actual artists how famous and known they were?
Local celebrities? Michael Jackson mega stars? Unknown dudes? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/31wii1/how_famous_were_people_like_mozart_or_beethoven/ | {
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"text": [
"Not my flaired field of study, but one I pursued earlier in my college years, so I'll try.\n\nThey were widely popular in the context of their time. Comparing it to Michael Jackson would lead in the wrong direction, though,... | [] | [] | [
[],
[]
] | |
8zx13w | Do we know the socioeconomic layout of Ancient Rome, ie the rich suburbs, ghettos, ethnic neighborhoods, etc.? | Particularly interested in whether there was an equivalent to Chinatown, Little Italy, etc. with Gauls or Carthaginians all gathering in one area.
EDIT: I should add that I know that our current Western concepts of urban layout probably don't entirely map to Ancient Rome. I just wanted to give some examples of what yo... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8zx13w/do_we_know_the_socioeconomic_layout_of_ancient/ | {
"a_id": [
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" > I know that our current Western concepts of urban layout probably don't entirely map to Ancient Rome\n\nIt's more than that, actually. It's not simply that modern urban planners lay out cities differently today, it's that cities themselves ar... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/4zpkzv/how_did_the_different_ethnic_quarters_in_rome_and/"
]
] | |
2w9x1l | why can't i use my turbo tax i bought last yeae, this year? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2w9x1l/eli5_why_cant_i_use_my_turbo_tax_i_bought_last/ | {
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"text": [
"Tax laws change every year. Thus the values calculated from last year's software won't necessarily work for this year.",
"While Tax laws and the calculations do change year-by-year, the biggest reason that Turbo Tax has ... | [] | [] | [
[],
[]
] | ||
1ch31x | Were there any European attempts to "restart" imperialism? | By the late 60s African nations had largely become independent and pretty much every colony had been granted independence save for Hong Kong and Macau. Western European economies were no longer the biggest in the world.
Were they any attempts to try to recolonize places? Certainly, many of the politicians who were inv... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ch31x/were_there_any_european_attempts_to_restart/ | {
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"text": [
"France has exerted a lot of effort to maintain loose and informal control over its former colonial empire in Africa. \n\nIf you're looking for formal attempts to regain a colonial empire, the best exam... | [] | [] | [
[],
[],
[]
] | |
22zze0 | Where normal citizens traveling between countries under total war? (e.g WW2) | Germany is being bombed, and so is London. The US is fighting the Germans, the Italians and the Japanes. But during these total wars, were there any civilians flying to and from these countries? Say I'm a German businessman during the early 1940s. Would it be considered strange for me to walk the streets of London? Sa... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/22zze0/where_normal_citizens_traveling_between_countries/ | {
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"I do know, at least, that third country nationals were able to use neutral nations as transit hubs. Many of the American officials who went to London in the early days tended to travel by clipper to Spain to avoid war risk, and from there to Brit... | [] | [] | [
[]
] | |
20cpsd | why is ram hardly ever seen as 6gb,12gb or 24 etc? | Is there a specific reason as to why this is? I was guessing that it may be because its doubling every time (2GB, 4, 8, 16, 32 etc.) but why is this? Is there a disadvantage of using these? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20cpsd/eli5_why_is_ram_hardly_ever_seen_as_6gb12gb_or_24/ | {
"a_id": [
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"score": [
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3,
2
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"text": [
"Because computers, being binary machines, do math in base 2. 2, 4, 8, 16, 32... are all powers of 2.",
"It's called dual channel memory architecture and it benefits from having two sticks of RAM wh... | [] | [] | [
[],
[],
[]
] | |
3de5xx | why is oskar groening a 94-year-old former bookkeeper & guard at auschwitz birkenau guilty of 300000 counts of accessory to murder in wwii but bush sr , bush jr bill clintion & obama are not prosecuted for iraq & afghanistan wars they ordered that killed millions of innocent people ? |
_URL_0_
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3de5xx/eli5why_is_oskar_groening_a_94yearold_former/ | {
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[],
[],
[],
[],
[],
[],
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"http://watson.brown.edu/costsofwar/costs/human/civilians"
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7y3dn0 | It seems that in paintings, we only see what nobles wore during formal occasions. Do we know what they would have worn on casual occasions? | I'm interested in things like pyjamas, clothes worn during exercise (for knights,) and clothes worn around the house when visitors were not expected, around the time of the Tudor period.
Pictures would obviously preferred, but I understand that most of these things probably would only have been depicted in literatu... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7y3dn0/it_seems_that_in_paintings_we_only_see_what/ | {
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"text": [
"Part of the issue here is that you're looking at the formal/informal divide from a very modern viewpoint. As I explained in [this answer](_URL_5_), the twentieth century saw sportswear and \"sloppy\" student clothing become unremarkable everyday... | [] | [] | [
[
"https://www.royalcollection.org.uk/collection/search#/7/collection/912229/margaret-giggs-1508-1570",
"https://artuk.org/discover/artworks/sarah-duchess-of-marlborough-16601744-politician-and-courtier-28557",
"http://www.metmuseum.org/art/collection/search/436538",
"https://www.royalcollection.org... | |
42m7qm | Does the shape of a galaxy offer any insight on its path of motion through the universe? | would a galaxy shaped like a spiraling disk move through the universe perpendicularly to its "disk" similar to how as a helicopter moves forward it pitches its nose down? | askscience | https://www.reddit.com/r/askscience/comments/42m7qm/does_the_shape_of_a_galaxy_offer_any_insight_on/ | {
"a_id": [
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"text": [
"No. While galaxies are certainly accelerating one way or another, the forces due to this acceleration are extremely minor compared to the forces of gravity within the galaxy. The orientation of a spiral galaxy is determined by the net angular m... | [] | [] | [
[]
] | |
rlorx | What happened to the natives Columbus kidnapped and brought back to Spain from his first voyage? | On Columbus' first voyage, he kidnapped over 20 natives and brought them back to Spain. I have read a lot on Columbus' first voyage but haven't seen anything about what happened to these natives. I know that he presented them in front of Queen Isabella but I cannot find anything about what happened next. These were the... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/rlorx/what_happened_to_the_natives_columbus_kidnapped/ | {
"a_id": [
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"text": [
"As far as I remember from my history classes, they died of disease pretty quickly, I think most of them faded quickly from the historical record though. Generally speaking, natives of the Americas were not considered valuab... | [] | [] | [
[],
[
"http://www.worldcat.org/title/age-of-reconnaissance/oclc/492177&referer=brief_results"
]
] | |
9ibyum | what causes an inflated balloon to rise? | *Inflated with helium, forgot to mention that in the title :) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9ibyum/eli5_what_causes_an_inflated_balloon_to_rise/ | {
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"text": [
"The helium inside it is less dense than air, and therefore rises. It's not because its inflated, it's because its filled with helium.",
"It has to be filled with a substance th... | [] | [] | [
[],
[],
[],
[]
] | |
63ofh3 | how is the so called "nuclear option" with respect to congressional approval of supreme court nominations constitutional? why is congress allowed to set its own rules for the approval process of supreme court nominees? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/63ofh3/eli5_how_is_the_so_called_nuclear_option_with/ | {
"a_id": [
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"text": [
"Here's the relevant excerpt from the Constitution:\n\n > **He(the President)** shall have the Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two-thirds of the Senators present concur; an... | [] | [] | [
[],
[]
] | ||
70mzcp | What is the gold and silver foil they put on satellites and why is it important? | I was looking at a picture of a satellite in the news the other day and noticed that every time I've seen some kind of space-related piece of equipment, it is wrapped in gold/silver foil. Is this real gold and real silver? What is it? Why is it used?
Thank you! | askscience | https://www.reddit.com/r/askscience/comments/70mzcp/what_is_the_gold_and_silver_foil_they_put_on/ | {
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"Despite the c... | [] | [] | [
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"https://www.nesdis.noaa.gov/content/good-gold-are-satellites-covered-gold-foil"
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[],
[],
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"https://en.wikipedia.org/wiki/Multi-layer_insulation",
"https://www.dunmore.com/products/multi-layer-films.html"
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[],
[
"http://blogs.esa.int/rocketscience/files/2015/01/VenusExpress-2.jp... | |
7g1ki7 | Is a blank 15 minute MP3 the same size as a 15 minute MP3 of music? | askscience | https://www.reddit.com/r/askscience/comments/7g1ki7/is_a_blank_15_minute_mp3_the_same_size_as_a_15/ | {
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"text": [
"It depends on the compression algorithm used.\n\nA .mp3 file of 15 min is built of a long sequence 0/1 in a specific structure/pattern to be read has music.\n\nA Silent track woul... | [] | [] | [
[],
[],
[],
[]
] | ||
50cok9 | If energy is released when bonds form, and input of energy is needed for bonds to break, then why does anabolism require energy, and catabolism "give" energy? | askscience | https://www.reddit.com/r/askscience/comments/50cok9/if_energy_is_released_when_bonds_form_and_input/ | {
"a_id": [
"d732hxu"
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"score": [
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"text": [
"You are right that any bonds must sit in a **local** energy minimum, where you have to put in energy to dissociate them and gain energy by binding them. Otherwise you wouldn't have a bound state.\n\nFor biological reactions, when they say \"requi... | [] | [] | [
[
"http://www.bbc.co.uk/staticarchive/8873c058083501d1d0231886177813e36f7d992b.gif"
]
] | ||
2am17h | Did whites in the American South only discriminate against African Americans and not Africans? | I heard an anecdote basically saying that "white only" restaurants only applied to American blacks, not people actually from Africa. Is there any validity to this? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2am17h/did_whites_in_the_american_south_only/ | {
"a_id": [
"ciwlbin"
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"score": [
2
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"text": [
"Definitely no. The racism was against color. If you weren't white you weren't welcome, and if you were black, you were especially not welcome because the sign is specifically against the blacks. Many people who consider themselves Africans are bl... | [] | [] | [
[]
] | |
5f3638 | why do women’s arms angle outward from the elbow, and men’s are straight? | after seeing [this picture](_URL_0_) I decided to finally come forward and ask this question. Women's arms and forearms seem to be misaligned. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5f3638/eli5_why_do_womens_arms_angle_outward_from_the/ | {
"a_id": [
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"score": [
2,
2,
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"text": [
"To fit around their hips. Otherwise they would constantly hit their arms on their hips as they walked.\n\nTheir hips are wider than the rest of their body for childbirth.\n",
"Mens aren't straight e... | [] | [
"https://i.redd.it/31qdq2qo9ezx.jpg"
] | [
[],
[],
[]
] | |
44rf86 | Was Francisco Franco a fascist or was his ideology different enough from that of Hitler and Mussolini to be considered a distinct political philosophy? | I was always under the impression that Franco was a fascist. Did his support of monarchist ideals lead to a significant difference between his party and other fascist movements throughout Europe? I also understand that Hitler and Mussolini had their own differences as well so any issues on which all three of them dis... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/44rf86/was_francisco_franco_a_fascist_or_was_his/ | {
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"text": [
"Not an answer but the AskHistorian's podcast did an episode on the Spanish Civil war and there was some discussion of this issue.\n_URL_0_",
"Whilst Spain was quite close wi... | [] | [] | [
[
"http://askhistorians.libsyn.com/ahp-012-the-spanish-civil-war"
],
[],
[],
[]
] | |
fgzte | betelgeuse blackhole? | I've been reading a lot of articles lately claiming betelgeuse might be going supernova in 2012. and i know that's BS. but it got me thinking. if betelgeuse were to go supernova and create a black hole how bad would this be for earth? at around 600 some light years away it would be about 3 times closer to us than the c... | askscience | http://www.reddit.com/r/askscience/comments/fgzte/betelgeuse_blackhole/ | {
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"text": [
"From a gravitational perspective, at any distance except near vicinity, there's no difference between a black hole and the object it was created from.\n\nE.g., if you could colla... | [] | [] | [
[],
[],
[],
[]
] | |
3ajbeu | If Nazi Germany had survived for a few more months than it did, would America have also used the Atomic Bomb on them? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3ajbeu/if_nazi_germany_had_survived_for_a_few_more/ | {
"a_id": [
"csd5it5",
"csd5r8e"
],
"score": [
13,
119
],
"text": [
"hi! just a heads-up that \"what if\" questions are not permitted here (see /r/HistoryWhatIf), but if we re-spin your question into \"were there plans / at what point were bombs ready\" then you may be interested in what /... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/1lwbtt/did_the_us_have_specific_targets_in_mind_for/",
"https://www.reddit.com/r/AskHistorians/comments/1ucutc/what_german_cities_were_top_on_the_list_for/",
"https://www.reddit.com/r/AskHistorians/comments/2y0pau/would_trumanthe_usa_have_used_nuclear_w... | ||
7mns1g | how does siphoning gas from one car to another work? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7mns1g/eli5_how_does_siphoning_gas_from_one_car_to/ | {
"a_id": [
"drv9tzt",
"drv9xbx",
"drvc109",
"drvdjm4",
"drvdmgw"
],
"score": [
4,
13,
6,
4,
2
],
"text": [
"You put a long tube into one tank, start sucking and once you've got the petrol coming you lower the top of the tube so that gravity takes care of the rest. ... | [] | [] | [
[],
[],
[],
[],
[]
] | |
10njxz | If the planet Mercury's day is twice the length of its year, what path does the sun take through the Mercurian sky? | Does the high eccentricity of its orbit matter at all? | askscience | http://www.reddit.com/r/askscience/comments/10njxz/if_the_planet_mercurys_day_is_twice_the_length_of/ | {
"a_id": [
"c6f2scd",
"c6f79l0"
],
"score": [
22,
12
],
"text": [
"I wouldn't say that it's same as Earth, just longer. There would be all kinds of interesting effects.\n\nFirst it's good to know about the different kinds of days there are. On Earth the different types of day are almost t... | [] | [] | [
[
"http://en.wikipedia.org/wiki/File:Sidereal_Time_en.PNG",
"http://en.wikipedia.org/w/index.php?title=File:Mercury%27s_orbital_resonance.svg&page=1"
],
[
"http://www.messenger-education.org/Interactives/ANIMATIONS/Day_On_Mercury/day_on_mercury_full.htm"
]
] | |
2ulv44 | How did the Nazi's - and the victorious Allies - deal with confiscated Jewish housing? | I watched a documentary last night which described how the Jews in liberated concentration camps stayed on in the camps in the weeks after. The narrator said they had no homes to go to.
Were camp inmates offered their old homes to return to? If not, why not?
How were their confiscated homes allocated? Were they give... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ulv44/how_did_the_nazis_and_the_victorious_allies_deal/ | {
"a_id": [
"co9kfe2"
],
"score": [
2
],
"text": [
"It depends on where they are from. Housing is usually plenty in rural areas so those houses are looted and deserted; while apartments in metropolitan areas are usually much more valuable. According to Livia Bitton-Jackson's memoir *My Bridges of ... | [] | [] | [
[]
] | |
1nzvze | if heat is simply molecules and atoms moving quickly and vibrating, why does shaking water not heat it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nzvze/eli5_if_heat_is_simply_molecules_and_atoms_moving/ | {
"a_id": [
"ccnkl3w",
"ccnkrx5"
],
"score": [
10,
2
],
"text": [
"It does, you're just not shaking it enough to have a perceivable effect.\n\n[[Here]](_URL_0_) is an /r/askscience post about this topic.",
"Mechanical energy does not produce much in the way of heat energy, especially a... | [] | [] | [
[
"https://pay.reddit.com/r/askscience/comments/powp7/can_water_if_shaken_violently_for_long_enough/"
],
[]
] | ||
1j06sf | why is it illegal to switch lanes in an intersection? | I get it's illegal but why is it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1j06sf/eli5_why_is_it_illegal_to_switch_lanes_in_an/ | {
"a_id": [
"cb9rpdj",
"cb9rwaw",
"cb9vg08"
],
"score": [
7,
2,
2
],
"text": [
"Because it's dangerous. Intersections are far more dangerous than non-intersections because people are crossing in front of each other. That's why we have so many accidents in intersections. So adding o... | [] | [] | [
[],
[],
[]
] | |
3b2o4b | how is carbon fibre made? | Is it manually weaved together or does it naturally form a weave through its chemical bonding? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3b2o4b/eli5_how_is_carbon_fibre_made/ | {
"a_id": [
"csikgf8"
],
"score": [
2
],
"text": [
"carbon fiber starts out as strands that is woven together into a fabric which is then shaped and is imbued with epoxy resin to harden it into a final product.\n\nhow its made video: _URL_0_"
]
} | [] | [] | [
[
"https://www.youtube.com/watch?v=ki1aCdkMSeo"
]
] | |
1564c8 | If the world were to stop spinning all together, would we feel it? | askscience | http://www.reddit.com/r/askscience/comments/1564c8/if_the_world_were_to_stop_spinning_all_together/ | {
"a_id": [
"c7jmajz",
"c7jmngl",
"c7jmszt",
"c7jmyqc",
"c7jnp6c",
"c7jnqp2"
],
"score": [
13,
5,
2,
2,
4,
2
],
"text": [
"Yes, all that ocean water moving at 1500 km/h along with the Earth would now be moving at the same speed relative to the fixed Earth. C... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
8q21pi | how did the human genome project sequence the dna? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8q21pi/eli5_how_did_the_human_genome_project_sequence/ | {
"a_id": [
"e0fwkpq"
],
"score": [
5
],
"text": [
"By stringing together lots and lots of short, overlapping snippets of DNA from many many copies of the genome. It's called \"shotgun sequencing.\" \n\nImagine that you have a bag containing all the pages from a novel, but they've all been shredde... | [] | [] | [
[]
] | ||
7outvx | what exactly is a commercial pilot doing in the cockpit during a flight? so many buttons, pedals, paperwork etc? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7outvx/eli5_what_exactly_is_a_commercial_pilot_doing_in/ | {
"a_id": [
"dscfuot",
"dscg45l",
"dsckjr1",
"dsckn3r",
"dsctfw6"
],
"score": [
28,
14,
46,
8,
3
],
"text": [
"Chilling most of the time really. Most of those buttons aren't particularly useful most of the time and aside from takeoff and landing, they don't do much.... | [] | [] | [
[],
[],
[],
[
"https://uk.reuters.com/article/oukoe-uk-britain-pilots-sleep/half-of-british-pilots-admit-to-falling-asleep-in-cockpit-survey-idUKBRE98Q0L620131009"
],
[]
] | ||
4yn7t9 | why do we have finger and toe nails? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4yn7t9/eli5_why_do_we_have_finger_and_toe_nails/ | {
"a_id": [
"d6p4rbb",
"d6p6xtg",
"d6p7emf",
"d6p7o0t",
"d6p7qa7",
"d6p7sn8",
"d6p98ur",
"d6pearz",
"d6pepm8",
"d6pfc12"
],
"score": [
13,
11,
59,
4,
335,
50,
3,
2,
3,
25
],
"text": [
"They used to be claws which were useful f... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[
"https://www.reddit.com/r/explainlikeimfive/search?q=finger+toe+nail&sort=new&restrict_sr=on&t=all"
],
[],
[
"https://en.wikipedia.org/wiki/Synapsid",
"http://i.imgur.com/eY64Y2C.gif",
"https://en.wikipedia.org/wiki/Anonychia"
]
] |
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