q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
2elua7 | How did they take photos in WW2 invasions? | Like how they got a picture of Allied powers invading a beach and Benito Mussolini-Adolf Hitler being together? Do they have like soldiers with cameras there? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2elua7/how_did_they_take_photos_in_ww2_invasions/ | {
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"I will answer this from the perspective of two photos which I think are famous within the Invasion of Normandy.\n\nThe first being: \"Into the Jaws of Death\", photographed by Robert F. Sargent. He was the chief photographer mate in the US Coast ... | [] | [] | [
[
"http://www.skylighters.org/photos/robertcapa.html",
"http://en.wikipedia.org/wiki/Robert_Capa#mediaviewer/File:Capa,_D-Day1.jpg",
"http://usmilitary.about.com/od/enlistedjob1/a/ph.htm"
]
] | |
16yej8 | Is it (theoretically) possible to wire a person so that they can see more colors than normal? [Relevant to Neuroscience, Biology, and possibly Medicine] | Humans who are not colorblind are able to register as color electromagnetic wavelengths of size around 390-700 nm. Would it be possible to modify the eye (and/or brain) to register a wider variety of wavelengths?
If that is possible, how would you do it? What would you change in the eye? What would you change in the ... | askscience | http://www.reddit.com/r/askscience/comments/16yej8/is_it_theoretically_possible_to_wire_a_person_so/ | {
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"To do such thing you would have to maybe modify the cells the capture light (rods) and specially those that capture color information (cones) on the retina (back part of the eye), so that a wider spectr... | [] | [] | [
[
"http://www.dailymail.co.uk/sciencetech/article-473897/A-bees-eye-view-How-insects-flowers-differently-us.html"
],
[
"http://en.wikipedia.org/wiki/Tetrachromacy#Possibility_of_human_tetrachromats"
],
[
"http://en.wikipedia.org/wiki/Jay_Neitz#Possibility_of_turning_human_trichromats_into_tetrac... | |
tphoy | Why do we have the need to feel special? | Is there an evolutionary explanation for this? We are billions of very similar individuals, yet every one of us think we are special and unique. | askscience | http://www.reddit.com/r/askscience/comments/tphoy/why_do_we_have_the_need_to_feel_special/ | {
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"I don't have an answer for you, but this general feeling is actually limited to mostly Western cultures; individualist socieites. The populations of collectivist cultures found in East Asia for example ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Individualism",
"http://en.wikipedia.org/wiki/Collectivist#Collectivist_societies"
],
[],
[
"https://www.youtube.com/watch?v=9D05ej8u-gU"
]
] | |
4azypo | Why do mixed race people tend to be somewhere between white and black instead of either white or black? | I would imagine there would have to be different alleles to control skin colour for this to be possible? Or perhaps different alleles for the mechanisms that produce melanin? | askscience | https://www.reddit.com/r/askscience/comments/4azypo/why_do_mixed_race_people_tend_to_be_somewhere/ | {
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"There's more than one gene that controls skin color. Black people have more genes for melanin production than white people, so they have darker skin. Mixed race people have some of the genes from the black relatives and some... | [] | [] | [
[],
[
"http://www.southafrica.net/za/en/articles/entry/article-southafrica.net-the-lemba-jews-of-africa",
"http://www.nature.com/emm/journal/v44/n3/full/emm201228a.html",
"http://www.cell.com/cell/fulltext/S0092-8674(07\\)01418-3",
"http://www.dailymail.co.uk/news/article-2974869/The-twins-tell-ap... | |
9pledg | Body Hair Removal - Why does modern western society prefer women hairless? | Men have been shaving their beards for a few centuries, sure. But what about chests, legs, underarms, genitalia? How did body hair removal come into fashion, and is it the first time the world has seen this trend? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9pledg/body_hair_removal_why_does_modern_western_society/ | {
"a_id": [
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"text": [
"Not to discourage further discussion, but the [faq](_URL_1_) features a few comments on hair, including a [great](_URL_0_) answer by /u/sunagainstgold ."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5qj3i3/when_did_women_in_europe_begin_shaving_their_legs/dd0iz15/?st=jcjh9v3f&sh=2d482123",
"https://www.reddit.com/r/AskHistorians/wiki/dailylife#wiki_hair"
]
] | |
2b7okl | what exactly did the early nasa computers, the types used in the apollo missions, do? how did 32k of processing power actually 'send a rocket to the moon'? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2b7okl/eli5_what_exactly_did_the_early_nasa_computers/ | {
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"It doesn't take much processing power to launch a rocket to the moon. The difficulty was the reliability of parts, not how fast it can compute.\n\nThe early computers are essentially just large calcula... | [] | [] | [
[],
[
"http://nassp.sourceforge.net/wiki/Simple_AGC",
"http://en.wikipedia.org/wiki/Apollo_Guidance_Computer"
],
[]
] | ||
1ts6c1 | what makes mozart arguably mankind's greatest musical mind, and how to someone like jimi hendrix stack up against him? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ts6c1/eli5_what_makes_mozart_arguably_mankinds_greatest/ | {
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"text": [
"Apart from writting excellent music, what made Mozart unique was his natural aptittude for Music. \n\nHe was a better pianist before 10 than most professionals will ever be, and he could just listen to really long symphonies only once and transcr... | [] | [] | [
[]
] | ||
4asic7 | AskScience AMA Series: I’m Dheeraj Roy, a neuroscientist studying what happens to lost memories in early stages of Alzheimer’s disease. Are these memories erased or do they exist but cannot be found? AMA! | Hi Reddit!
My research is about what happens to our memories when we cannot remember. When we experience memory loss, does it mean that these memories have been erased? Could it be that some memories exist in our brains but we are unable to find and recall them? These questions led me to study memory loss in Alzheime... | askscience | https://www.reddit.com/r/askscience/comments/4asic7/askscience_ama_series_im_dheeraj_roy_a/ | {
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"d... | [] | [
"https://twitter.com/dheerajroy7",
"http://dx.doi.org/10.1038/nature17172",
"http://www.nature.com/nature/journal/vaop/ncurrent/full/nature17312.html",
"http://classic.sciencemag.org/content/348/6238/1007.abstract"
] | [
[],
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"http://www.pcrm.org/sites/default/files/pdfs/research/research/Problems-Associated-with-Animal-Experimentation.pdf",
"http://www.ncbi.nlm.nih.gov/pubmed/23813612",
"http://www.ncbi.nlm.ni... | |
3xtb0q | what does alcohol consumption feels like? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3xtb0q/eli5what_does_alcohol_consumption_feels_like/ | {
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"text": [
"Kinda makes you feel dizzy. Depending on your personality type it can bring out the worst in you. When I'm drunk I get in peoples faces and start fights lol.",
"It burns against your throat and down... | [] | [] | [
[],
[],
[]
] | ||
25uxi3 | how can worms still move and be alive when cut in pieces? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25uxi3/eli5_how_can_worms_still_move_and_be_alive_when/ | {
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"text": [
"They aren't alive for long. They have compartments, as you can see by the patterns on their bodies that look like rings, these compartments are separate from each other, but their organs are spread thr... | [] | [] | [
[],
[
"http://www.thenakedscientists.com/forum/index.php?topic=8260.0"
],
[]
] | ||
2rtiwm | why do people think older=smarter? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rtiwm/eli5why_do_people_think_oldersmarter/ | {
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"text": [
"I don't know many people who think \"older=smarter\". I know a lot of people who believe that \"older=more experienced\" which is a very different thing indeed.\n\n > Intelligence is the information yo... | [] | [] | [
[],
[],
[]
] | ||
60gt7e | if the weight loss after gastric bypass is due to severe calorie restriction, why is severe calorie restriction on it's own rarely advised? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60gt7e/eli5if_the_weight_loss_after_gastric_bypass_is/ | {
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"text": [
"Well, for starters\n\n1. It's hard. If it's you only plan for weight loss, you're going to have a high chance of failing\n\n2. If done incorrectly for too long, you'll miss out on essential micronutrients and end up with som... | [] | [] | [
[],
[]
] | ||
30oauz | Why does red and green light combine to make an apparent color of wavelength between them, like yellow, but red and blue combine for an apparent color not between their wavelengths? | [As seen here,](_URL_1_) and compared with [the visible light spectrum,](_URL_0_) it seems that all main colors (red, green, blue) combine with each other to produce an apparent wavelength in between their parent colors except for red and blue. Why is that? | askscience | http://www.reddit.com/r/askscience/comments/30oauz/why_does_red_and_green_light_combine_to_make_an/ | {
"a_id": [
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"text": [
"_URL_0_\n\nThis minutephysics video might help! Its really an interest way our brain tries to make our spectrum a closed one..",
"Don't forget there's a third possibility: some wavelength pairs (additive complementaries)... | [] | [
"http://science.hq.nasa.gov/kids/imagers/ems/visible.gif",
"http://umassk12.net/sess/Pickle/images/ColorCircles.jpg"
] | [
[
"https://m.youtube.com/watch?v=iPPYGJjKVco"
],
[]
] | |
2u0w0q | Is visible light, or any other form of light for that matter, affected by wind? | Say I point a laser at a wall. If I turn a fan to face *perpendicular* toward the beam, would it push the light across on even an atomic scale?
EDIT: Changed parallel to perpendicular | askscience | http://www.reddit.com/r/askscience/comments/2u0w0q/is_visible_light_or_any_other_form_of_light_for/ | {
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"text": [
"It wouldn't be noticeable, but the direction of the travel of the light is dependent on whether the medium is moving. \n\nThis property was used to test and reject the existence of luminiferous aether,... | [] | [] | [
[],
[],
[]
] | |
2la9f5 | Caligula had a painful headache followed by a coma. Could he have suffered brain damage causing his claims of divinity and other erratic behaviour? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2la9f5/caligula_had_a_painful_headache_followed_by_a/ | {
"a_id": [
"clt8oo8"
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"score": [
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"text": [
"This is getting out of the realm of history and into speculative neuropathology, but a [frontal lobe tumor](_URL_0_) could have caused erratic mood swings, impaired judgment, and bursts of aggression and hypersexuality, not to mention agonizing h... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Frontal_lobe_disorder",
"https://www.wlu.ca/forms/3305/Frontal_Lobe_Dysfunction.pdf"
]
] | ||
3ws70l | Given how loud, and often insatiable a human infant can be, how do you think we were still able to evolve and thrive as a species? What were some early parenting tactics that kept us from becoming food? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ws70l/given_how_loud_and_often_insatiable_a_human/ | {
"a_id": [
"cxyofpt"
],
"score": [
2
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"text": [
"This is really a question about pre-history, possibly even pre-Homo sapiens sapiens, and I would recommend you try /r/AskAnthropology or else /r/AskScience, as they are better suited for questions about evolution like this."
]
} | [] | [] | [
[]
] | ||
1mla8s | why does beer taste different when i get it at a restaurant, from when i buy it from a store? | Why is it that when I drink beer at a restaurant (tap or bottled) it tastes amazing, but when I buy it at the market it tastes like dump? This happens with the same brand btw example, Heineken from the market and Heineken from a restaurant. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mla8s/eli5why_does_beer_taste_different_when_i_get_it/ | {
"a_id": [
"ccaatcl",
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"score": [
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3
],
"text": [
"Do you drink your beer directly from the bottle? If so, that could be a major reason. Smell is an enormous amount of taste, which anyone who has eaten food with a blocked nose can attest to. If you're drinking beer direc... | [] | [] | [
[],
[]
] | |
2fhkbe | why do i see the same thread, posted a few days later all the time? | Like currently one of the top ask reddit threads is what song will you always associate with what movie. I swear I saw this question like a week ago! I mean the exact one, not another variation like what will sometimes happen with a "Men of reddit" question turning into a "Women of reddit". I also even see it with some... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fhkbe/eli5_why_do_i_see_the_same_thread_posted_a_few/ | {
"a_id": [
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"score": [
3,
3
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"text": [
"Countdown until the next person who asks \"ELI5: Why do I like the smell of my own farts?\"\n\nBecause that one seems to be a daily occurrence.",
"Reddit has 114.5 million unique visitors every month. How they get that ... | [] | [] | [
[],
[
"http://expandedramblings.com/index.php/reddit-stats/#.VAjQBWOZjws"
]
] | |
5e0fc0 | why does a hollow cilinder descend faster than a solid one on an inclined plane? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5e0fc0/eli5why_does_a_hollow_cilinder_descend_faster/ | {
"a_id": [
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"text": [
"It depends on the moment of inertia's of the two objects. \n\nThis is a pretty classic example in beginning physics classes to \"break\" your intuition, so to say. You have a solid wheel and a hollow ring, both with the same mass and same radius.... | [] | [] | [
[]
] | ||
57npl1 | How do we create artificial elements heavier than uranium but cannot create hydrogen fusion? | Asking off the basis that you would need to fuse or add more protons, neutrons and electrons to an atom to create heavier elements so why can we not do that with hydrogen? | askscience | https://www.reddit.com/r/askscience/comments/57npl1/how_do_we_create_artificial_elements_heavier_than/ | {
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7,
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"text": [
"We can create extremely heavy nuclei using fusion reactions in particle accelerators. So it goes without saying that we can *very easily* do fusion reactions with light nuclei like hydrogen as well.\n\... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Lawson_criterion"
],
[],
[]
] | |
ctgoav | Was Lucius Verus a good emperor? | There is a lot of talk about the 5 good emperors their accomplishments and good character but they were not the only ones that ruled during that time. Why is Lucius Verus omitted from being discussed jointly with the 5? Was he a bad ruler( in any context), or was it that he didnt accomplish anything of note? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/ctgoav/was_lucius_verus_a_good_emperor/ | {
"a_id": [
"exkxolm"
],
"score": [
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"text": [
"The distinguishing characteristics of Lucius Verus were his hedonism, his affability and his dimness. At no point in his life did he ever display anything more than a passing interest in the affairs of state or even in warfare. He was marginalize... | [] | [] | [
[]
] | |
4ca6rd | Who was responsible for blowing up the USS Maine in Cuba in 1898? | Has this ever been fully resolved?
The Spanish said it was an accident (coal bunker next to magazine caused the explosion)
Sampson Board's Inquiry in 1898 said it was a mine
Vreeland Board in 1911 said it was an external explosion, but different from what the Sampson Board described
Rickover Investigation in 1974 c... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4ca6rd/who_was_responsible_for_blowing_up_the_uss_maine/ | {
"a_id": [
"d1ggaex",
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2,
8
],
"text": [
"At the moment most historians agree that it was an accident. There is at the very least no evidence that the destruction of the Maine was premeditated. One of the most important historians currently living who studies Cuba, ... | [] | [] | [
[
"http://www.jstor.org/stable/3640268?seq=3#page_scan_tab_contents",
"http://www.nytimes.com/1998/02/14/world/havana-journal-remember-maine-cubans-see-american-plot-continuing-this-day.html?pagewanted=all"
],
[
"http://www.dcte.udel.edu/hlp/resources/overseas/competing_evidence.pdf",
"https://w... | |
17n7vc | Beijing's smog has been in the news recently and there's been a greater focus on Chinese pollution. Did Asian countries like Japan, South Korea, and Taiwan face similar environmental degradation as they developed or are China's problems worse? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/17n7vc/beijings_smog_has_been_in_the_news_recently_and/ | {
"a_id": [
"c877a0v",
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5
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"text": [
"Absolutely true. In fact, some of the worst known environmental disasters occurred in Japan in the 20th century. Chief among those was riparian and seawater dumping of heavy metals like mercury by Ja... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Minamata_disease",
"http://iconicphotos.wordpress.com/2009/05/06/tomoko-uemura-in-her-bath/"
],
[],
[
"http://en.m.wikipedia.org/wiki/List_of_countries_by_carbon_dioxide_emissions#section_1"
]
] | ||
91jf3s | why is it creepy to others if you never smile? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/91jf3s/eli5why_is_it_creepy_to_others_if_you_never_smile/ | {
"a_id": [
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3
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"text": [
"A smile to humans is a \"I'm not a threat\" symbol that has persisted throughout evolution for a long time. Even some animals \"smile\" in a manner of speaking. Its just another form of body language. Someone good at reading... | [] | [] | [
[],
[]
] | ||
5gbgg6 | why is chinese not pronounced the way it's spelled in english? | There are renderings of other languages to English that do the same but Chinese is most common. Why is Qing pronounced Ching? Why is Peking pronounced Beijing?
Side question: Why is British Worcester pronounced "Wooster"? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5gbgg6/eli5_why_is_chinese_not_pronounced_the_way_its/ | {
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"text": [
"Mainly because the pronunciations are somewhere between the multiple spellings. If you hear a native Chinese speaker say Beijing, you'll hear a subtle mixed ... | [] | [] | [
[
"http://www.westword.com/news/top-112-spellings-of-moammar-gadhafi-or-gaddafi-or-qaddafi-or-kadafi-5875642"
],
[],
[],
[
"https://en.wikipedia.org/wiki/Weorgoran",
"https://en.wikipedia.org/wiki/Syncope_(phonology)",
"https://en.wikipedia.org/wiki/Romanization_of_Chinese",
"https://en.... | |
oi275 | Are animals susceptible to mental incapacitation? | After 4 years as a student at a magnet school for Science and Technology, I have yet to have a serious explanation of two things:
1. Are other animals susceptible to genetic disorders that make them mentally incapacitated like downs syndrome in humans?
2. Are other animals susceptible to mental retardation and other ... | askscience | http://www.reddit.com/r/askscience/comments/oi275/are_animals_susceptible_to_mental_incapacitation/ | {
"a_id": [
"c3hfdqp"
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"score": [
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"text": [
"Any animal that has a central nervous system can suffer damage to that CNS or can have a developmental defect. What happens to them depends on the type of animal. Rats are gregarious animals and will care for a sick, injured or disabled animal. ... | [] | [] | [
[]
] | |
3yk3dv | How come the earth at perihelion (in Jan) is colder than when it is at aphelion (in July)? | If the Earth is closest to the sun in January why is it so much colder than in July when it is furthest away? | askscience | https://www.reddit.com/r/askscience/comments/3yk3dv/how_come_the_earth_at_perihelion_in_jan_is_colder/ | {
"a_id": [
"cyeikfz"
],
"score": [
8
],
"text": [
"Earth isn't colder in January, the northern hemisphere is. Right at this moment there is summer in Australia, South Africa and South America and well, even in Antarctica, technically speaking. \n\nSeasons aren't caused by different distances to t... | [] | [] | [
[
"https://upload.wikimedia.org/wikipedia/commons/e/e6/Oblique_rays_04_Pengo.svg"
]
] | |
7puh9d | - how do flu strains vs flu shots battle it out? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7puh9d/eli5_how_do_flu_strains_vs_flu_shots_battle_it_out/ | {
"a_id": [
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"score": [
2,
3
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"text": [
"Most flu strains are related. I would assume that having the antibodies for one might provide some protection until your body is able to produce new antibodies for the new strain.",
"The flu shot, like other vaccines, wo... | [] | [] | [
[],
[]
] | |
3n0mcp | why so many couriers ride fixie bikes | These are people who literally ride a bike for a living so there must be something to it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3n0mcp/eli5_why_so_many_couriers_ride_fixie_bikes/ | {
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"text": [
"Because it's simpler system and there's less moving parts to break. A fixed gear doesn't have a derailleur nor the cable system for switch gears. The chain doesn't have enough... | [] | [] | [
[],
[],
[],
[]
] | |
1vjjg8 | why do we sleep elevated above the ground? | At least in the western world, most if not all beds are elevated above the ground. I know in some Asian places they sleep right on the floor so why don't we all do that? Seems like more effort to have the mattress on something. I figure a long time ago it was to avoid vermin and bugs but I'd say most people nowadays wo... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1vjjg8/eli5_why_do_we_sleep_elevated_above_the_ground/ | {
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"I would it started as a way to avoid bugs or other animals on you when you sleep, then someone saw you could put things under you bed. It also could have been... | [] | [] | [
[],
[],
[],
[],
[]
] | |
2kso9a | why is general anaesthesia so common for wisdom teeth removal, if it isn't necessary? | I got my wisdom teeth removed this summer (age 37). Because I don't have insurance I went to a dental college to let some students do it on the cheap.
I was surprised to find out that they didn't do any kind of sedation at all and planned to do it with a local anaesthetic. Maybe the cultural "trope" of being knocked ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kso9a/eli5_why_is_general_anaesthesia_so_common_for/ | {
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"score": [
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"I'm having a tooth out soon and I want to be sedated purely out of fear. I can barely make it through an exam. An ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
4f2uxv | how can space have no edge and yet still contain a finite amount of matter? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4f2uxv/eli5_how_can_space_have_no_edge_and_yet_still/ | {
"a_id": [
"d25f9iu"
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"score": [
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"text": [
"There are geometric shapes that have this property. Look at the surface of a sphere, for example. If you are a human walking on the Earth, you will never find the \"edge\" of the Earth, because there isn't one! However, there is only a finite amo... | [] | [] | [
[]
] | ||
d2fkjl | Why is it easy to either completely close or open our eyelids, but takes effort to keep them half-open? | If the control of our eyelids was performed simply by a set of muscles, why would there be any difference in effort required to maintain the position? | askscience | https://www.reddit.com/r/askscience/comments/d2fkjl/why_is_it_easy_to_either_completely_close_or_open/ | {
"a_id": [
"ezx0lsz",
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"score": [
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"text": [
"If I can add further to the question by asking my own:\n\nAre the muscles in eyelids *contracting or relaxing* in the “open eyes” position, or is it more complicated than that?\n\nWorking from the commo... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Orbicularis_oculi_muscle",
"https://en.wikipedia.org/wiki/Levator_palpebrae_superioris_muscle"
]
] | |
exndmg | why is there a difference between the voice you hear when talking and the voice on recording. and which is the one other people hear? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/exndmg/eli5_why_is_there_a_difference_between_the_voice/ | {
"a_id": [
"fg9yqsf"
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"score": [
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"text": [
"When you are listening to your own voice as you talk the sound is bouncing around your skull and makes it sound deeper. So your \"real voice\" is the one you hear recorded."
]
} | [] | [] | [
[]
] | ||
27uvoy | (LANGUAGE HISTORY) How closely is the Kazakh (and other central Asian languages) related to the languages of northern native First Nation tribes considering they were their predecessor. | So me and my girlfriend, who is Kazakh, have been talking about how similar Nations like the Inuits are to central asians. She has seen videos of the spoken inuit and agrees it sound somewhat similar to kazakh minus the harshness on the throat.
Is any of this founded or is this a classic case of correlation not causa... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/27uvoy/language_history_how_closely_is_the_kazakh_and/ | {
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"text": [
"You can also try /r/linguistics and /r/AskAnthropology ",
"Kazakh is a Turkic language, related to other Turkic languages like Turkish, Chuvash, Khalaj, Uyghur, and Sakha. From multiple lines of evidence, including the ... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Uvular_consonant"
]
] | |
sn8oy | Could someone list out why there are so many people in Pakistan and India with the family name, "Khan". | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/sn8oy/could_someone_list_out_why_there_are_so_many/ | {
"a_id": [
"c4fcxno",
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"text": [
"I might be wrong, but it could be down to a fairly small number of surnames. Considering both of those countries have a high population, that would likely make the number of Khans seem a lot higher too. The same is common i... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Khan_(surname)",
"http://en.wikipedia.org/wiki/Malik-Shah_I"
]
] | ||
1e03or | how did our astronauts get off the moon and get home without the same elaborate setup we had in florida when they first launched? | I understand that the gravity is lower, buy I still can't see how they got home. Also, I'm no conspiracy theorist, just a little curious. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1e03or/eli5_how_did_our_astronauts_get_off_the_moon_and/ | {
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"_URL_0_\n\nThe gravity of Earth is about 6 times stronger, which doesn't look it would make a huge difference.\n\nBut if you measure the energy difference, it takes about 19 times as much energy to esca... | [] | [] | [
[
"http://xkcd.com/681_large/"
],
[
"http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/LM_illustration_02.jpg/457px-LM_illustration_02.jpg",
"http://www.hq.nasa.gov/alsj/nasa-tnd-6846pt.1.pdf",
"http://www.hq.nasa.gov/office/pao/History/diagrams/ad004.gif"
],
[]
] | |
78eirt | Why did the 390-750nm range evolve to be the "visible" spectrum of light for the vast majority of species? What's special about it? | I know there are some exceptions like snakes being able to sense infrared, and some deers being able to see ultra-violet. But those are very specific adaptions. All the rest adapted to (now) visible light, even though that's missing for half the time (night). And even those that are night-active just evolved fancy mirr... | askscience | https://www.reddit.com/r/askscience/comments/78eirt/why_did_the_390750nm_range_evolve_to_be_the/ | {
"a_id": [
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"score": [
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14
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"text": [
"The visible spectrum is also where most sunlight is. Some snakes can sense far IR through special organs on their heads but not through their eyes. Other animals can see a little further into the UV, but there isn't as muc... | [] | [] | [
[],
[
"https://upload.wikimedia.org/wikipedia/commons/e/e7/Solar_spectrum_en.svg",
"https://en.wikipedia.org/wiki/Retinal#Vision",
"http://www1.lsbu.ac.uk/water/images/water_spectrum_2.gif",
"https://en.wikipedia.org/wiki/Photon_energy"
]
] | |
64cxdq | how can the judicial service prove that a defendant was read their miranda rights? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/64cxdq/eli5_how_can_the_judicial_service_prove_that_a/ | {
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"text": [
"This is why police officers now have body cams...\n\nThere is typically more than one officer on the scene when an arrest is made as well. The arresting officer has witnesses to the arrest. There is also the dash cam with ... | [] | [] | [
[],
[]
] | ||
4zctjd | Why was the U.S. carrier fleet scrapped so quickly after WW2 and why didn't they simply sell them off or give them away or just use them? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4zctjd/why_was_the_us_carrier_fleet_scrapped_so_quickly/ | {
"a_id": [
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"score": [
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"text": [
"So I sort of take issue with the basic premise of your question. That the carrier force was quickly scrapped and not supplemental to allies after the war, or made use of.\n\nOf the Essex class and the 24 completed, just 2!, would never see activ... | [] | [] | [
[]
] | ||
673ads | what makes a mute person unable to speak? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/673ads/eli5_what_makes_a_mute_person_unable_to_speak/ | {
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"There isn't any one cause. Mute just means someone can't speak, no matter what the reason.\n\nKind of like a person who is blind may have been born with no eyes, or they may have lost their eyesight due to an accident, or th... | [] | [] | [
[],
[]
] | ||
4ivnbw | why is the pound worth so much more than the us dollar? how does a currency degrade/change value? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ivnbw/eli5_why_is_the_pound_worth_so_much_more_than_the/ | {
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"text": [
"How much the base unit of a currency system is worth is an entirely meaningless & arbitrary distinction *at a single point in time*. It's only by looking at how those exchange rates *change over time... | [] | [] | [
[],
[],
[]
] | ||
k1d7t | Are there any irrational numbers which don't have equally-occuring digits? | So, in all the irrational numbers I've come across, each digit occurs with equal frequency.
Are there any numbers in which this doesn't happen?
EDIT: Are there any commonly used irrational mathematical constants which are not "normal"? | askscience | http://www.reddit.com/r/askscience/comments/k1d7t/are_there_any_irrational_numbers_which_dont_have/ | {
"a_id": [
"c2grvba",
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"score": [
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"text": [
"Lots. For example, I believe that this number, extended indefinitely, is irrational:\n\n0.101001000100001000001...",
"This property is **(edit: almost)** called [normality](_UR... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Normal_number"
],
[],
[
"http://en.wikipedia.org/wiki/Normal_number"
]
] | |
ykt4l | What research has there been into the ability of animals besides humans to hallucinate? | Obviously humans can hallucinate, what about are closest relatives the primates? Can Mammals, Birds, other vertebrates, or even cephalopods? If so do they share any common traits? If not is it because of the difficulties to study the phenomenon or do they lack certain necessary traits. | askscience | http://www.reddit.com/r/askscience/comments/ykt4l/what_research_has_there_been_into_the_ability_of/ | {
"a_id": [
"c5wr446"
],
"score": [
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"text": [
"My chance to shine!\n\nFrom a neuropharmacologic stance, hallucinations can be induced with indoleamine pyscomimetics (LSD is a good example). These drugs can be given to mice and a response gained. From there we then use the drug under research ... | [] | [] | [
[]
] | |
1atr2b | What are the two red spots that are missing from the Planck CMWB map? What could cause the difference? | _URL_0_
You can see that the two red spots near the centre are not present on the Planck image. What is the reason for this? | askscience | http://www.reddit.com/r/askscience/comments/1atr2b/what_are_the_two_red_spots_that_are_missing_from/ | {
"a_id": [
"c90rtiv"
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"text": [
"That region is right in the midplane of the Galaxy, where there is a lot of foreground emission which must be properly subtracted. It is possible that the subtraction was less good in WMAP than for Planck.\n\nAlso, the higher angular resolution o... | [] | [
"http://www.pictureshack.us/images/21323_wmap-planck.gif"
] | [
[]
] | |
4h5u03 | why wasn't north america as advanced as eurasia was? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4h5u03/eli5_why_wasnt_north_america_as_advanced_as/ | {
"a_id": [
"d2nmp9d"
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"score": [
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"text": [
"One theory is a lack of domesticatable animals. CGP Grey has an excellent pair of videos about it if you'd like to learn more. I'll link them in just a second\n\nEDIT: _URL_0_\n_URL_1_"
]
} | [] | [] | [
[
"https://youtu.be/JEYh5WACqEk",
"https://youtu.be/wOmjnioNulo"
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] | ||
2jmb6f | video game graphics are just going to keep getting better and better. are we eventually going to have live action video games that have real actors in them | P.S. I know some real actors have been in motion capture for games such as Silent Hills and L.A. Noire | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jmb6f/eli5video_game_graphics_are_just_going_to_keep/ | {
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"score": [
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17,
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"text": [
"Far too expensive in my opinion, it's far cheaper to just create a 3d model then pay an actor exorbitant amounts of money to flail around in front of a camera",
"That's not re... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Category:Interactive_movie_video_games"
],
[]
] | |
258oft | How do animals such as salmon make it back to breeding grounds? | Recently in geography I've been doing a case study on salmon and they begin in spawning grounds, swim wherever they want and somehow make it back to the same spawning grounds to reproduce... How does this happen? Is it just salmon? | askscience | http://www.reddit.com/r/askscience/comments/258oft/how_do_animals_such_as_salmon_make_it_back_to/ | {
"a_id": [
"ches6x6"
],
"score": [
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"text": [
"Lots of animals have incredible homing abilities that rely on all kinds of senses. Pigeons have been shown to use infra sounds for example. \n\nSalmon however use a combination of things such as the moon and tides but primarily rely on scent cues... | [] | [] | [
[]
] | |
26x0lf | Why does Maxwell's demon need to erase information? | As I understand, Maxwell's demon increases the entropy of the universe whenever it erases information. My question is why does it necessarily have to erase information in the first place? If we were dealing with a very small system, say a few hundred gas molecules, could the demon not record the positions and momenta... | askscience | http://www.reddit.com/r/askscience/comments/26x0lf/why_does_maxwells_demon_need_to_erase_information/ | {
"a_id": [
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"text": [
"Because we assume that Maxwell's demon can only store a finite amount of information. This then requires the demon to delete information when it updates the positions and velocities of the particles it is keeping track of. This is the fundament... | [] | [] | [
[]
] | |
ctsmt5 | If it weren’t for climate change, would most of the glaciers we see today still be retreating? | When looking at information on the history of glaciers in the U.S. today, it appears that most of these glaciers started retreating at least as early as 1910s (that I have read at least). Given that climate change was not as big of a favor back then (or was it?), it made me wonder if glaciers today would still be retre... | askscience | https://www.reddit.com/r/askscience/comments/ctsmt5/if_it_werent_for_climate_change_would_most_of_the/ | {
"a_id": [
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"text": [
"It's a complicated question, but the answer is probably \"yes/maybe, but we would generally expect that glacial retreat would have stopped or would be slowing, as opposed to accelerating, which is what we observe in most locations currently\".\n\... | [] | [] | [
[
"https://www.pnas.org/content/pnas/110/38/15216.full.pdf",
"https://en.wikipedia.org/wiki/Little_Ice_Age",
"https://academic.oup.com/bioscience/article/53/2/131/254976",
"https://www.pnas.org/content/97/4/1406",
"https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0435-3676.2005.00242.x"
]
] | |
3c5uxh | why do dogs get so scared or fireworks, no matter how quiet/far away it is? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3c5uxh/eli5_why_do_dogs_get_so_scared_or_fireworks_no/ | {
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"text": [
"Same reason why we were so scared of lightnings and made up fierce deities to explain their existence. We are scared of imposing thing... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
26i8zx | what is ukip and why is their victory so controversial? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26i8zx/eli5_what_is_ukip_and_why_is_their_victory_so/ | {
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2,
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"text": [
"Basically they want withdrawal from the European Union, membership of which they say costs the UK £120bn per year.\n\nAlong with that... | [] | [] | [
[
"http://www.theguardian.com/politics/2014/apr/29/10-good-reasons-not-vote-ukip-nigel-farage-europe"
],
[],
[],
[],
[],
[]
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2vcumt | If you fired enough electrons into a black hole, could you significantly change the charge? | Ignoring the problem of where you'd get that many electrons, could you add enough of them (or positive ions/protons, I guess) to change the charge in a way that would alter its behaviour? (I've head that having charge or spin can subtly change how a black hole and its event horizon behave, though this might be incorrec... | askscience | http://www.reddit.com/r/askscience/comments/2vcumt/if_you_fired_enough_electrons_into_a_black_hole/ | {
"a_id": [
"cogxyl2"
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"score": [
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"text": [
"You can describe any general black hole with three quantities: the mass M, the charge Q, and the spin J (see [wiki](_URL_0_) for more). You are correct, you can get some strange effects, such as an inner and outer horizon, which is true if either... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Kerr%E2%80%93Newman_metric#History"
]
] | |
21br7t | which further (plausible) developments in russia / ukraine could lead to or avoid a second cold war? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/21br7t/eli5_which_further_plausible_developments_in/ | {
"a_id": [
"cgbiefe"
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"score": [
2
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"text": [
"I think it's incredibly unlikely that there will be a second cold war, because there's nothing at stake here that either side is likely to launch nukes over. You have to understand that during the cold war, you had two ideologies competing over t... | [] | [] | [
[]
] | ||
1keb6l | how are the finances of religious groups in the usa structured? | I've heard that churches, synagogues, etc. are "tax exempt" or "nonprofit." Does this mean they are all 501(c)(3)s? If they are basically nonprofits, how is it that some people (ex. televangelists) are able to make so much money? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1keb6l/eli5_how_are_the_finances_of_religious_groups_in/ | {
"a_id": [
"cbo1sd2",
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"score": [
2,
2
],
"text": [
"Don't answer! It's a trap!",
"They are non-profits. As to how the people make so much money? Salaries. \n\nNon-profit doesn't mean you can't have revenue, just no \"profit\" at the end of the year. \n\nSay you bring in 1... | [] | [] | [
[],
[]
] | |
1okuqo | How was concert etiquette in the major Baroque, Classical & Romantic periods of music different to the classical/art music concert etiquette of today? | Today I had a lecture on Beethoven's piano concertos, specifically No. 4 where the piano begins quietly on its own. My lecturer mentioned that the audience may not have even noticed it beginning because people did not treat performances with the same reverence as they would today. This led me to thinking, how has conce... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1okuqo/how_was_concert_etiquette_in_the_major_baroque/ | {
"a_id": [
"ccszjxf"
],
"score": [
46
],
"text": [
"OHH YAY! Crowd behavior is my absolute favorite topic of opera history! \n\nIn the good old days music crowds were RUDE as HECK. There was no concept of showing respect for the art or the performers as we do now. Talking through performances was... | [] | [] | [
[]
] | |
372wa1 | How does the brain process sensory information? | I'm having trouble imagining how we perceive senses. For example when we hear a sound, the air turbulence travels into the ear and gets converted into signals which go to the auditory cortex. But in the end whats makes us hear it the way we hear it. | askscience | http://www.reddit.com/r/askscience/comments/372wa1/how_does_the_brain_process_sensory_information/ | {
"a_id": [
"crjcahc"
],
"score": [
7
],
"text": [
"This is the hard problem of consciousness and the answer is we don't know. We don't know why electrical activity in certain parts of the brain can give rise to the feeling of seeing red in one case and hearing a voice in another."
]
} | [] | [] | [
[]
] | |
t4529 | Salt: Sodium or Sodium chloride? | I'm not a chemist or scientist, but I thought salt was = sodium chloride. Yet most of the general public calls salt, "sodium". Is this just a general and accepted misuse of the word, or am I confused here? | askscience | http://www.reddit.com/r/askscience/comments/t4529/salt_sodium_or_sodium_chloride/ | {
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"score": [
3,
3,
2,
2,
2,
2
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"text": [
"It's just a general and accepted misuse of the word, table salt really is sodium chloride.",
"Table salt is sodium chloride, but to ... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
5hhyxx | why something purchased via mail order took 6-8 weeks to deliver instead of the few days it would take today? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5hhyxx/eli5_why_something_purchased_via_mail_order_took/ | {
"a_id": [
"db0cht5",
"db0d0vy"
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"score": [
2,
8
],
"text": [
"Because logistics have vastly improved. Options for quick delivery are so cheap and common now that businesses which don't deliver in under a week are at a serious disadvantage. \n\nIn 1990 no one expected to place an order ... | [] | [] | [
[],
[]
] | ||
1awywu | Can anyone explain early 19th century European Exchange rates? | I am currently re-reading Alexandre Dumas' "The Count of Monte Cristo" and am having difficulty understanding currency values. Often, numerous currencies are mentioned in regard to one another in seemingly arbitrary relationships. Mostly things like Crowns, Francs, Louis & Piastries(?) are referenced but I have glean... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1awywu/can_anyone_explain_early_19th_century_european/ | {
"a_id": [
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"score": [
14
],
"text": [
"It is a bit complicated - most countries had capped their currency either to gold or to silver - however, as gold and silver varied in value and the exchange rate coins against coins remained fixed, some coins simply vanished from circulation wh... | [] | [] | [
[]
] | |
4bocdz | Roman historians - how was bread baked in the roman society, and what role did it play? (following a diet) | Lovely historians,
I am doing an experiment where I am following the old ancient roman food culture in terms of diet for 120 days. I am trying to be as accurate as possible and documenting everything I do in a blog. I've been in contact with many universities and now recently traveled to Italy myself in order to rese... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4bocdz/roman_historians_how_was_bread_baked_in_the_roman/ | {
"a_id": [
"d1b6uuu"
],
"score": [
4
],
"text": [
"Spelt was the best friend of the common man. However, different classes consumed different [kinds of bread](_URL_0_) and there were several varieties, besides. Are you looking to try all of them or emulate the average Roman? The British Museum an... | [] | [] | [
[
"http://www.cerealialudi.org/en/alimentazione/pane-e-panettieri-nellantica-roma/",
"http://www.openculture.com/2015/08/how-to-bake-ancient-roman-bread-dating-back-to-79-ad.html"
]
] | |
3lyqe8 | what do people mean when they say that wages have been stagnant? | The only thing I can find is that essentially even though the numbers look bigger, they have the same purchasing power. So while you used to be able to buy a house and raise a family on minimum wage, now you can not. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3lyqe8/eli5_what_do_people_mean_when_they_say_that_wages/ | {
"a_id": [
"cvafneb",
"cvafyeo"
],
"score": [
2,
4
],
"text": [
"The median wage in the US has not grown in real (inflation adjusted) terms. Basically, yeah, exactly what you wrote.\n\nThe purchasing power of people in the middle and lower ends of the income spectrum has scarcely expanded... | [] | [] | [
[],
[
"https://thenextrecession.files.wordpress.com/2014/01/household-income-monthly-median-since-2000.gif"
]
] | |
qok9q | why doesnt the eu just drop greece from the euro? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/qok9q/eli5why_doesnt_the_eu_just_drop_greece_from_the/ | {
"a_id": [
"c3z7wzu"
],
"score": [
20
],
"text": [
"If that were to happen, people would lose confidence in the EU. It would appear to 'not work' and lose credibility. \n\nFurther, a lot of people have invested in Greece. Other people have given loans to Greece. Other countries have given loa... | [] | [] | [
[]
] | ||
723nra | why do your legs fall asleep when you sit on the toilet for a long time but not when you sit in a regular chair? | Edit: Thank you for all the advice on why it takes me so long to shit. My problem, however, is getting distracted by my phone and just sitting there after the business is done thus causing tingling legs. Guess that's more of a personal problem though. I could have googled but thought of y'all instead- take that how yo... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/723nra/eli5_why_do_your_legs_fall_asleep_when_you_sit_on/ | {
"a_id": [
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"dng0l68",
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"dng2vhi",
"dng33cj",
"dng35a5",
"dng41nx",
"d... | [] | [] | [
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6slwyb | How long/many organ transplants did it take for us to truly understand how our body rejects new organs and how to fight this process? | askscience | https://www.reddit.com/r/askscience/comments/6slwyb/how_longmany_organ_transplants_did_it_take_for_us/ | {
"a_id": [
"dlduaa3"
],
"score": [
22
],
"text": [
"I don't know the full answer to your question. But Renee Fox and Judith Swazey, in their book [The Courage to Fail](_URL_0_) have a chapter on this. In 1973 surgeons began to think that they had the ability to do heart transplants successfully. ... | [] | [] | [
[
"https://www.amazon.com/Courage-Fail-Social-Transplants-Dialysis/dp/0765807416"
]
] | ||
6ot1rw | what does drowning feel like and how long does it take for the body to completely shut down to the point of no return? | Edit: I'm not suicidal, please don't worry! Just genuinely curious. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6ot1rw/eli5_what_does_drowning_feel_like_and_how_long/ | {
"a_id": [
"dkk0964"
],
"score": [
3
],
"text": [
"The point of no return depends on a lot of circumstances. Most of the body can survive for quite some time and still recover. The limiting factor is the brain. Without oxygen the brain starts to get damaged. If the brain is too damaged then it do... | [] | [] | [
[]
] | |
30tjx6 | What does the outside world look like to an observer falling into a black hole? | I understand that the time it takes for me to cross the event horizon is finite, but still very long (to a far away observer). So if I'm falling in feet first and look up, what do I see? I've been looking for an answer online and seem to find slightly different results. This is my understanding so far:
* All the ligh... | askscience | http://www.reddit.com/r/askscience/comments/30tjx6/what_does_the_outside_world_look_like_to_an/ | {
"a_id": [
"cpwdx3e"
],
"score": [
5
],
"text": [
"The event horizon would appear to recede below you: the event horizon is defined by the region of spacetime where light cannot reach you, but the light from farther above you can reach you perfectly fine. Observers far above you would appear to s... | [] | [] | [
[]
] | |
1w8obm | How much gold was actually found in California during the Gold rush? | You always read of people becoming wealthy from selling supplies to prospectors, but did any prospectors get really wealthy from gold finds? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1w8obm/how_much_gold_was_actually_found_in_california/ | {
"a_id": [
"cezsj9u"
],
"score": [
51
],
"text": [
"Some prospectors (better referred to as placer miners for the first period of the '49ers) became modestly rich, meaning they obtained enough money (in the low 5 figures) to purchase \"that farm back home.\" Most of the 300,000 or so '49ers who c... | [] | [] | [
[
"http://www.nvbooks.nevada.edu/NewForthcoming/Titles/The%20Gold%20Rush%20Letters%20of%20E.%20Allen%20Grosh%20and%20Hosea%20B.%20Grosh;2251?1&PHPSESSID=8bc3333f8d04710092233b6a8d7cf840",
"http://users.humboldt.edu/ogayle/hist383/GoldRush.html",
"http://www.nvbooks.nevada.edu/Browse/Titles/The%20Roa... | |
2qcjjg | Could a person stand on mars wearing only a good face respirator? | I read that some parts of mars, during certain seasons, are warm enough to be comfortable for human life. So is it possible that during these seasons you could go outside on mars wearing only some kind of face respirator and feel its atmosphere first hand? | askscience | http://www.reddit.com/r/askscience/comments/2qcjjg/could_a_person_stand_on_mars_wearing_only_a_good/ | {
"a_id": [
"cn51b58",
"cn52cz7",
"cn54jc9"
],
"score": [
36,
9,
17
],
"text": [
"The atmospheric pressure on Mars is about 0.6% of sea level pressure on Earth. Temperature on a hot day is 20^o C, so the moisture *will* boil off your skin making it a very [unpleasant and dangerous ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Armstrong_limit"
],
[
"http://hypertextbook.com/facts/2007/ShemikaWhite.shtml"
],
[
"http://en.wikipedia.org/wiki/Armstrong_limit"
]
] | |
cuah4d | In the movie Gravity when Sandra Bullock is spinning out of control, would simply closing her eyes stop the spinning sensation? | askscience | https://www.reddit.com/r/askscience/comments/cuah4d/in_the_movie_gravity_when_sandra_bullock_is/ | {
"a_id": [
"exslrcj",
"exsz0lc"
],
"score": [
70,
794
],
"text": [
"I think I see what you're getting at. Velocity is relative, and you always feel like you're at rest. You only perceive speed relative to other objects by directly observing them - i.e. you see the fenceposts fly past whil... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Tennis_racket_theorem",
"https://en.wikipedia.org/wiki/Optokinetic_response",
"https://en.wikipedia.org/wiki/Graveyard_spiral",
"https://www.nasa.gov/audience/forstudents/9-12/features/F_Human_Vestibular_System_in_Space.html"
]
] | ||
8f4wot | why does nerve damage cause muscle atrophy? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8f4wot/eli5why_does_nerve_damage_cause_muscle_atrophy/ | {
"a_id": [
"dy0k8zg",
"dy0n42f"
],
"score": [
2,
2
],
"text": [
"You nerves are the \"wires\" your brain uses to send signals to your muscles to move. If your nerves are damaged and the signals can't get through, your muscles don't move and then atrophy.",
"Great question! \n\nThe s... | [] | [] | [
[],
[]
] | ||
3x63g2 | What causes elements to form into all the different rocks and gems we find on Earth? | Is it simply different materials found in the ground, or is there more to it than this? I saw the giant jade stone on the front page and now I'm super curious about what makes them all form differently. | askscience | https://www.reddit.com/r/askscience/comments/3x63g2/what_causes_elements_to_form_into_all_the/ | {
"a_id": [
"cy1zzwg",
"cy20b6s"
],
"score": [
4,
6
],
"text": [
"You're asking a question which defines an entire field of study called \"petrology.\"\n\nSuffice it to say that a whole host of physical parameters control what kinds of minerals form from a given melt, including temperature... | [] | [] | [
[],
[]
] | |
1y5z4p | If I had a ten foot-wide core of the Earth as long as the diameter of the Earth would there be Earth-normal gravity at the ends of this long cylinder? | askscience | http://www.reddit.com/r/askscience/comments/1y5z4p/if_i_had_a_ten_footwide_core_of_the_earth_as_long/ | {
"a_id": [
"cfhmvkp",
"cfho73w"
],
"score": [
2,
2
],
"text": [
"No gravity iirc is relative to the mass present in a given space. Since the 10 foot wide core would not contain all the same mass as comprises the earth, gravity would be vastly reduced. Conversely if the cylinder were the s... | [] | [] | [
[],
[]
] | ||
1vzpyo | Why is Julius Caesar a household name, but Sulla and Marius are not? | Why are Caesar, Antony and Pompey so popular, but Marius and Sulla are not? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1vzpyo/why_is_julius_caesar_a_household_name_but_sulla/ | {
"a_id": [
"cexpefy",
"ceycq4d"
],
"score": [
3,
5
],
"text": [
"I would say Shakespeare. \n\n\"Et tu Brutus\" is something everyone knows but cant actually be attributed to Caesar, but it was immortalized in Shakespeare's plays. Much like how Romeo and Juliet are household names but the ... | [] | [] | [
[],
[]
] | |
3d3t0t | what is that wind-like sound you hear inside your head when stretching at night/tired? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3d3t0t/eli5_what_is_that_windlike_sound_you_hear_inside/ | {
"a_id": [
"ct1jdl8"
],
"score": [
4
],
"text": [
"IIRC it's caused by a small muscle in your inner ear known as the tensor tympani, which can be triggered when doing certain things such as yawning or clenching your jaw. Some people can do it on command, but the short version is that its a tiny m... | [] | [] | [
[]
] | ||
2typ4d | Apparently when shown footage of the Holocaust during the Nuremberg trials, Goering was shocked and speechless. Why would this be? | I've watched a couple of documentaries and they all show the same thing, Goering being very shocked when forced to watch film of Allied entrance into holocaust camps. Bodies, disease, etc. Was he faking it? It makes no sense because he was a pretty hardcore racist himself.
(I'm not an anti-Semite by the way and certai... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2typ4d/apparently_when_shown_footage_of_the_holocaust/ | {
"a_id": [
"co3lm63",
"co3lq04",
"co3lunj",
"co3miyg"
],
"score": [
78,
227,
1626,
25
],
"text": [
"Do you have a link to a video showing his reaction? ",
"No more guesses, posts that do not directly answer the original question or answers like : \"No historical info h... | [] | [] | [
[],
[],
[],
[]
] | |
3mhvqq | why the chief justice of supreme court was never considered for potus line of succession ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3mhvqq/eli5_why_the_chief_justice_of_supreme_court_was/ | {
"a_id": [
"cvf20uf",
"cvf6oif"
],
"score": [
3,
2
],
"text": [
"The chief justice has a very different role from a cabinet member or Congressman. Most importantly, Supreme Court justices do not act democratically: they do their best to determine what the law *is*, while trying to stay aw... | [] | [] | [
[],
[]
] | ||
5mfs62 | If electrically charged particles were fired into a black hole, what would happen? Would there be a point at which the electro-static repulsion of the particles overcame the force of gravity? | askscience | https://www.reddit.com/r/askscience/comments/5mfs62/if_electrically_charged_particles_were_fired_into/ | {
"a_id": [
"dc3eur1"
],
"score": [
20
],
"text": [
"If you send charged particles into a black hole the black hole becomes charged, and yes, there is a point where the electrostatic repulsion wins over the gravitational attraction.\n\nThis happens when (in the right units) the total charge equals... | [] | [] | [
[]
] | ||
7gggaq | Could I take a block of Lead, remove some protons and end up with the same amount of gold? | askscience | https://www.reddit.com/r/askscience/comments/7gggaq/could_i_take_a_block_of_lead_remove_some_protons/ | {
"a_id": [
"dqix17s",
"dqj0ugd"
],
"score": [
30,
14
],
"text": [
"Yes, but “just removing some protons” is not a trivial thing to do. It can be done, but it’s prohibitively expensive for producing mass quantities of some element for commercial sales.",
"Yes, but setting aside, for th... | [] | [] | [
[],
[]
] | ||
5akvll | why have we only discovered less than 5 percent of the ocean? what about the other 95 percent? | And what can exploring the ocean do for us? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5akvll/eli5_why_have_we_only_discovered_less_than_5/ | {
"a_id": [
"d9h7jl2",
"d9h82se"
],
"score": [
3,
2
],
"text": [
"Most of it is covered with water. \n\nBut we actually have mapped the bottom of the ocean pretty well, as far as where the surface is and it's general formation. We just haven't sent probes down to get eyeballs on it; it's m... | [] | [] | [
[],
[]
] | |
29be3f | How did Americans react when they learned that Hirohito would not only escape prosecution but also keep the throne following WWII? | Looking at all the propaganda posters during the war, it seems Hirohito was by far the most hated man in America, moreso than even Hitler. The deal with the Emperor doesn't seem to have been something that affected Macarthur's career, either. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/29be3f/how_did_americans_react_when_they_learned_that/ | {
"a_id": [
"cijgisd",
"cijmdj7",
"cijqk0e"
],
"score": [
132,
14,
3
],
"text": [
"I can give a little explanation of why and how the governments on both sides made sure there wasn't a massive adverse reaction, if not really what the reaction was.\n\nBoth the Japanese and the Ameri... | [] | [] | [
[],
[],
[]
] | |
1nz4yq | with a nuke, how is it possible that so much energy can come out of something that small? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nz4yq/eli5_with_a_nuke_how_is_it_possible_that_so_much/ | {
"a_id": [
"ccndz4u",
"ccnecfu"
],
"score": [
3,
3
],
"text": [
"Nuclear weapons mostly work on the principle of fission. A heavy element (like Uranium 235, which contains 143 neutrons and 29 protons, and is unstable) is forced to lose some of it's subatomic particles and become different... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Nuclear_fission"
],
[]
] | ||
165eih | why do broke actors have to do every movie they can to pay their debts? wouldn't one movie be sufficient? | I often hear about actors who will do every movie they are offered because they need the money. (Nicolas Cage for instance) Wouldn't the xx milion $ from one movie be sufficient?
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/165eih/why_do_broke_actors_have_to_do_every_movie_they/ | {
"a_id": [
"c7svqb0",
"c7svs2a"
],
"score": [
2,
2
],
"text": [
"That depends on how big their debts are, how much they really get paid, and what kind of lifestyle they are living in the meantime. For example, if Nic Cage owes some ridiculous amount of taxes, and gets paid a few million f... | [] | [] | [
[],
[]
] | |
tkiih | why do i wake up "angry?" | Why am I not a morning person and why do I get angry when I'm woken up? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/tkiih/why_do_i_wake_up_angry/ | {
"a_id": [
"c4ndygd",
"c4ne1up",
"c4ni580",
"c4nit4g"
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"score": [
16,
7,
5,
2
],
"text": [
"I would like to know this as well. During the day, I'm a happy go lucky, completely friendly guy. In the morning, however, I am the most angry, psychotic person you'd ever find. I... | [] | [] | [
[],
[],
[],
[]
] | |
qygs9 | How long does your body take to refresh all its atoms? | askscience | http://www.reddit.com/r/askscience/comments/qygs9/how_long_does_your_body_take_to_refresh_all_its/ | {
"a_id": [
"c41hdct",
"c41hg1b"
],
"score": [
3,
7
],
"text": [
"Tattoos can last a lifetime. I see no reason why tattoo pigment should persist longer than other material in the body. One can therefore conclude that, whilst there is a constant cycle of material, a proportion of molecules ... | [] | [] | [
[
"http://www.wolframalpha.com/input/?i=molecules+of+water+in+1l",
"http://www.wolframalpha.com/input/?i=volume+of+water+in+the+world"
],
[
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3075882/"
]
] | ||
1je905 | why do we need vaccines like tetanus more than once? | my understanding is that vaccines are weakened forms of an attacking virus. Vaccines allow the body to figure out how to defend against the vaccine, so once a vaccine is used doesn't the human body remember how to create these immune responses?
I think that weakened viruses are the reason that some people get sick for... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1je905/why_do_we_need_vaccines_like_tetanus_more_than/ | {
"a_id": [
"cbdsigb"
],
"score": [
3
],
"text": [
"Living bodies are all about effectiveness. Our bodies will not hold on to the instructions of how to get rid of something if it has not happened in a long time. The reason is there are special cells responsible for recognizing a previously docum... | [] | [] | [
[]
] | |
25oitt | what happens in the brain when it decides to attempt suicide | The brain and the body have so many different reflexes, instincts and systems whose goal is to keep itself alive. With the brain being the center of this what change causes it to switch from self-preservation to self-termination? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25oitt/eli5_what_happens_in_the_brain_when_it_decides_to/ | {
"a_id": [
"chj7q5d",
"chj7x5q"
],
"score": [
2,
12
],
"text": [
"Suicide is not a reflex. Though our body is designed for self-preservation, ultimately it is at the mercy of our conscious command. If someone really wants to kill himself, there is no neurological reaction that could stop ... | [] | [] | [
[],
[]
] | |
3e00lb | what is a "trigger" on reddit, and is it a term used outside of reddit? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3e00lb/eli5_what_is_a_trigger_on_reddit_and_is_it_a_term/ | {
"a_id": [
"cta8530",
"cta8ik0"
],
"score": [
3,
2
],
"text": [
"When some people undergo severe psychological trauma, like rape victims or soldiers, they're left with something called PTSD. Sometimes, things that remind them of the traumatic event can give them a panic attack or other u... | [] | [] | [
[],
[
"https://www.reddit.com/r/explainlikeimfive/search?q=trigger+warning&restrict_sr=on&sort=relevance&t=all"
]
] | ||
4hlyrh | why do rich people invest in football clubs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4hlyrh/eli5why_do_rich_people_invest_in_football_clubs/ | {
"a_id": [
"d2qs3xa"
],
"score": [
4
],
"text": [
"it's a way to spend the huge amount of cash they have into something that seems productive and interesting and can make them more popular or well known. it's also a status symbol thing."
]
} | [] | [] | [
[]
] | ||
2zhrga | Where Can I Learn More About Maroon Communities? | Richard Dunn's *Sugar and Slaves: The Rise of the Planeter Class in the English West Indies, 1624-1713* mentions maroon communities and how they interacted with Indies colonial activities throughout the book, and even has a reference to something referred to in the index as the "Maroon Wars". However, he does not reall... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2zhrga/where_can_i_learn_more_about_maroon_communities/ | {
"a_id": [
"cqeongr"
],
"score": [
2
],
"text": [
"Richard Price's Maroon Societies: Rebel Slave Communities in the Americas is the classic text and covers maroons all over the Caribbean and the Americas. It came out in the 70s but has seen subsequent editions. A good place to start looking at th... | [] | [] | [
[]
] | |
8wpaet | why did it take till now to develop phone chargers that fit both ways? is there some special technology in making it fit both ways, or did just no one think of it till now? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8wpaet/eli5_why_did_it_take_till_now_to_develop_phone/ | {
"a_id": [
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"score": [
21,
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12,
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31,
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3,
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"text": [
"Nobody wanted to... | [] | [] | [
[],
[],
[],
[
"https://gct.co/images/products/usb-connector/usb-3-a-ab.jpg"
],
[],
[],
[],
[],
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[]
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4jugm6 | Why is 0! greater than 0.5! ? | When I type 0.5! into my calculator, I get 0.8862.... But when I type 0! into my calculator, it gives me 1. How can a factorial of a smaller number be larger than a factorial of a larger number? I understand whole number factorials, but I don't understand decimal factorials at all. Also, how is it possible to have a fa... | askscience | https://www.reddit.com/r/askscience/comments/4jugm6/why_is_0_greater_than_05/ | {
"a_id": [
"d39uiri"
],
"score": [
259
],
"text": [
" > Is there some advanced way of defining factorials that we aren't taught in highschool?\n\nYes, there is. The factorial function can be generalized to inputs other than non-negative integers. The standard way to do this is via the *gamma fu... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Gamma_function",
"https://upload.wikimedia.org/wikipedia/commons/thumb/5/52/Gamma_plot.svg/2000px-Gamma_plot.svg.png",
"http://mathworld.wolfram.com/GammaFunction.html"
]
] | |
r9ufs | Boiling and melting point when impurities are present | When a soluble impurity is added to a solvent the boiling point will increase if the impunity's boiling point is higher than the solvents. While the melting point will decrease if the melting point of the impurity is higher than the solvent. Then what about alloys? When I melt an alloy, if I add a metal with a lower me... | askscience | http://www.reddit.com/r/askscience/comments/r9ufs/boiling_and_melting_point_when_impurities_are/ | {
"a_id": [
"c442xbs",
"c44330r"
],
"score": [
2,
8
],
"text": [
"Actually, I think when a solute is added to a solvent, the boiling point of the solution will always increase, and the freezing point will always decrease, both in relation to the molality of the new solution (regardless of ... | [] | [] | [
[],
[
"http://www.substech.com/dokuwiki/lib/exe/fetch.php?w=&h=&cache=cache&media=iron-carbon_diagram.png",
"http://www.mrl.ucsb.edu/~edkramer/LectureVGsMat100B/99Lecture14VGs/Image128.jpg",
"http://csmres.jmu.edu/geollab/fichter/IgnRx/be55base.gif",
"http://www.sv.vt.edu/classes/MSE20... | |
2jxp7i | "nothing ever goes away on the internet." truth or just a scare tactic? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jxp7i/eli5nothing_ever_goes_away_on_the_internet_truth/ | {
"a_id": [
"clg0obp",
"clg5ypl"
],
"score": [
3,
2
],
"text": [
"Closer to true than to not true. If you put anything online, ever, it's very likely around somewhere. If the thing you posted was ever interesting to anyone, it's probably been copied and saved by someone. Naked pictures dou... | [] | [] | [
[],
[]
] | ||
2yo0ib | why are americans obsessed with superheroes? | Serious question. While Hollywood is obviously saturating us with superhero films right now, it seems to me more than just a passing trend. For example, social media is full of grown adults doing superhero cosplay, posting superhero quotes, getting superhero tattoos etc. It's more of a cultural feature than a fad at th... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2yo0ib/eli5_why_are_americans_obsessed_with_superheroes/ | {
"a_id": [
"cpbarmj",
"cpbavre",
"cpbbgps",
"cpbdgqb",
"cpbh0k5"
],
"score": [
8,
7,
2,
2,
2
],
"text": [
"A lot of them originally came about during darker periods of US economic and political climates. They gave people something to distract them from the reality.... | [] | [] | [
[],
[],
[],
[],
[]
] | |
dgcxmd | When and where does the "stereotypical" image of a caveman come from? Why do we seem to all agree that cavemen wear cheeta skins, wield clubs, and say "ooga booga?" | Obviously nobody was around writing stuff during prehistory, so this image of a caveman had to come from someone's imagination. When, where, and why did this come to be the image of a caveman? My first thought was the Flintstones, but it seems like they relied on some familiarity with the imagery. Is this idea from col... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dgcxmd/when_and_where_does_the_stereotypical_image_of_a/ | {
"a_id": [
"f3b3149",
"f3bqpkx"
],
"score": [
1179,
39
],
"text": [
"French paleontologist, Marcellin Boule, was the first scientist to describe the Homo neanderthalensis as ape-like in the 1920s, probably leading to the ooga booga part of your question (also, an 1886 short story by Andre... | [] | [] | [
[],
[
"osf.io/jtkn2"
]
] | |
rmtkr | WHY do waves propagate? | I'm ashamed to say that after studying physics as an undergrad, I never once thought to ask "why?"
I understand that as far as, let's say, sound waves go, basically the energy is vibrating through the atoms. The energy travels through air until it hits an atom, then the atom absorbs and then releases energy, and the p... | askscience | http://www.reddit.com/r/askscience/comments/rmtkr/why_do_waves_propagate/ | {
"a_id": [
"c473m3h",
"c473s1d"
],
"score": [
8,
3
],
"text": [
"This is a fairly subtle question, actually. The idea of a wave is very challenging to define as it incorporates a huge variety of phenomena. One characteristics of a wave is a transfer of energy from one point to the next wi... | [] | [] | [
[],
[]
] | |
2dbgv1 | How much of the human body can grow back after injury? | We all know that if you get a cut or even a sizable wound, your body will slowly reconstruct itself. My question is, at what point is a wound too severe to be regrown? If I took a bunch of the flesh off of an arm, could it regrow? How bad does it have to be before it can no longer regrow? What determines whether or not... | askscience | http://www.reddit.com/r/askscience/comments/2dbgv1/how_much_of_the_human_body_can_grow_back_after/ | {
"a_id": [
"cjnzubu",
"cjo2puc"
],
"score": [
26,
10
],
"text": [
"Oh, this is gonna be a long one. It really depends on a lot of factors, like, as you mentioned, severity of the wound, locality, depth, width, which tissues are affected in which ways, function of immune system, function o... | [] | [] | [
[
"http://www.reddit.com/r/askscience/comments/2dbgv1/how_much_of_the_human_body_can_grow_back_after/cjo2puc",
"http://www.reddit.com/r/askscience/comments/2cythr/does_bone_fuse_back_together_after_surgery/cjkj4na"
],
[]
] | |
ftcg6 | If the other rocky planets had water, would they have continents similar to ours? | Also, do those planets also have tectonic plates like Earth? | askscience | http://www.reddit.com/r/askscience/comments/ftcg6/if_the_other_rocky_planets_had_water_would_they/ | {
"a_id": [
"c1igrgp",
"c1igsf7"
],
"score": [
2,
2
],
"text": [
"[These guys say water isn't even a requisite for plate tectonics on exoplanets.](_URL_0_)\n\nOpinion: yes other planets have continents, though resemblance to Earths is not likely.",
"The only other body with liquid on i... | [] | [] | [
[
"http://arxiv.org/PS_cache/arxiv/pdf/0710/0710.0699v1.pdf"
],
[
"http://www.jpl.nasa.gov/news/news.cfm?release=2005-041"
]
] | |
dagy9h | Do you know any ancient or medieval recipes that you've cooked/might be worth cooking or maybe a list/book of recipes or general food and food preparation? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dagy9h/do_you_know_any_ancient_or_medieval_recipes_that/ | {
"a_id": [
"f1pven9"
],
"score": [
31
],
"text": [
"The website you want is [Medieval Cookery](_URL_1_). They've got:\n\n* Links to [digitized versions of actual medieval cookbooks](_URL_3_)--some in translation, some in the original languages. These aren't going to be recipes in the modern sense... | [] | [] | [
[
"http://medievalcookery.com/books.html?primary",
"http://www.medievalcookery.com",
"http://medievalcookery.com/recipes/",
"http://medievalcookery.com/etexts.html"
]
] |
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