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 |
|---|---|---|---|---|---|---|---|---|---|
6idock | how do "game rooms" and other illegal casinos get away with it for so long in places where gambling is illegal i.e. texas | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6idock/eli5_how_do_game_rooms_and_other_illegal_casinos/ | {
"a_id": [
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"It probably varies based on the location, but in Texas some of them are basically skirting the rules. They have a membership to go in and play, and don't take a cut, so it effectively becomes just people getting a place to gamble against other pe... | [] | [] | [
[]
] | ||
bzz7ad | what happens to stomach acid once food is ready to move to the next step of digestion? how does the body dispose of it without causing harm to itself? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bzz7ad/eli5_what_happens_to_stomach_acid_once_food_is/ | {
"a_id": [
"eqyq4kc",
"eqz6tmg"
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"score": [
3,
7
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"text": [
"The acid moves with food but the pancreas secrete a bicarbonate solution to neutralize the acid so the food can be digested without making wholes in the intestine. \n\nAlso digestion occurs in an alkaline environment. And th... | [] | [] | [
[],
[]
] | ||
2a0prv | what is the white stuff on my tongue and where does it come from? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2a0prv/eli5_what_is_the_white_stuff_on_my_tongue_and/ | {
"a_id": [
"ciqczj9",
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"score": [
16,
3,
2
],
"text": [
"Bacteria and debris. Comes from eaten food and dead cells. You should clean your tongue more often, as it isn't supposed to be white.",
"Bacteria and dead cells. It's probably on the inside of your... | [] | [] | [
[],
[],
[]
] | ||
2eakdf | Is it possible to make metallic hydrogen on earth? | I am just wondering if it would be possible to make metallic hydrogen on earth, or is this beyond our capabilities right now? If so are we close? I read that metallic hydrogen would be a good alternative fuel, as the only by product would be water. | askscience | http://www.reddit.com/r/askscience/comments/2eakdf/is_it_possible_to_make_metallic_hydrogen_on_earth/ | {
"a_id": [
"cjy4mia",
"cjy53xv"
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"score": [
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9
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"text": [
"The NIF has recently compressed diamond to 50 million atm.\n\n_URL_0_\n\nMetallic hydrogen is theorized to form around 250,000 atm. \n\n_URL_1_\n\nI'm not sure how the NIF setup will work with hydrogen, but even if it did, i... | [] | [] | [
[
"https://www.llnl.gov/news/aroundthelab/2011/Dec/ATL-120911_nif.html",
"http://en.wikipedia.org/wiki/Metallic_hydrogen"
],
[]
] | |
147i3c | How accurate is the stigma surrounding "Gypsies" throughout history, specifically in Russia immediately preceding and during the Reign of Czar Nicholas II? | I'm in the process of putting the finishing touches on a novel concerning time travel. Even though it is fiction, I am trying to "write between the lines of history" so to speak; meaning I try to have all the historical events and circumstances represented as accurately as possible. The fiction occurs in the gray areas... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/147i3c/how_accurate_is_the_stigma_surrounding_gypsies/ | {
"a_id": [
"c7akwqg",
"c7anmxy"
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"score": [
8,
2
],
"text": [
"I don't have a lot of primary sources, but I ran through the articles on the Russian wikipedia and there's some good stuff. My initial feel based on general knowledge of the period seems to be correct that it was a different... | [] | [] | [
[
"http://ru.wikipedia.org/wiki/%D0%A0%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B5_%D1%86%D1%8B%D0%B3%D0%B0%D0%BD%D0%B5"
],
[]
] | |
ihhxh | Can the visual cortex be stimulated in ways that
cause the perception of 'impossible' colors? | When I say impossible color, I mean a sensation of color that cannot be caused by stimulation of the cone cells in the eyes. | askscience | http://www.reddit.com/r/askscience/comments/ihhxh/can_the_visual_cortex_be_stimulated_in_ways_that/ | {
"a_id": [
"c23stgm",
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"score": [
6,
2,
3,
62,
6,
2,
2
],
"text": [
"nope! \n\nAny stimulation of the optic pathway, be it the retina, the optic nerves, the optic chiasm (where 2 of ... | [] | [] | [
[],
[],
[],
[
"http://www.moillusions.com/2006/03/eclipse-of-mars-illusion.html",
"http://en.wikipedia.org/wiki/Tetrachromacy#Possibility_of_human_tetrachromats",
"http://en.wikipedia.org/wiki/Grapheme-color_synesthesia",
"http://www.reddit.com/tb/hj9yu"
],
[],
[],
[]
] | |
3o5vfd | how is medicine made/dispensed at a pharmacy? | I am pretty sure they don't keep a bottle of every medicine or a pill for every thing. or do they? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3o5vfd/eli5how_is_medicine_madedispensed_at_a_pharmacy/ | {
"a_id": [
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"score": [
13,
9,
4
],
"text": [
"For most common things, sure. A normal corner pharmacy probably stocks 1,000's of different pills and liquids. For uncommon things, they have it shipped in from the manufacturer. My wife has prescri... | [] | [] | [
[],
[],
[]
] | |
1mwj1q | how did "special head" on america's got talent do his levitation act? | Here is a link to his act: _URL_0_
I watched it a few times, but I just don't get it. Anyone know what is going in the act? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1mwj1q/eli5_how_did_special_head_on_americas_got_talent/ | {
"a_id": [
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"score": [
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20,
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],
"text": [
"This is one of the oldest tricks in the book. Most magicians will [know what's going on](_URL_0_) the instant they see he's using a stick. ",
"It appears to be a variation of the traditional versio... | [] | [
"https://www.youtube.com/watch?v=vdL4d3hEJ0Y"
] | [
[
"http://m.youtube.com/watch?v=etSivpBHUmE&desktop_uri=%2Fwatch%3Fv%3DetSivpBHUmE"
],
[
"http://www.randi.org/site/images/stories/One_person_levi.jpeg"
],
[]
] | |
ssh26 | Could fatal diseases such as AIDS eventually evolve to spread by different means, such as airborne? | And if not, what are the restrictions preventing it? I know a common cold can be spread by coughing, but what limits more lethal illnesses from finding easier ways to spread themselves? | askscience | http://www.reddit.com/r/askscience/comments/ssh26/could_fatal_diseases_such_as_aids_eventually/ | {
"a_id": [
"c4gncbs"
],
"score": [
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],
"text": [
"The route by which infectious diseases spread is based on a number of factors. \n- Where they live (e.g. cold virus lives in the nose and throat)\n- Number of particles required to cause disease (which in turn is usually related to a bug's abilit... | [] | [] | [
[]
] | |
nsadm | Why does the body not process pain after a serious injury? | I was just over at the [AMA](_URL_0_) of the guy who cut his hand open and I noticed a thread on shock/no pain. What is it that causes this? Shock? Adrenaline? If so, how? | askscience | http://www.reddit.com/r/askscience/comments/nsadm/why_does_the_body_not_process_pain_after_a/ | {
"a_id": [
"c3bljcc",
"c3bljcc"
],
"score": [
7,
7
],
"text": [
"When placed in a stressful situation, e.g. the cutting open of one's hand, your body has a fight-or-flight response. This is the term for a combination of several effects including increased heart rate, slowing of digestion,... | [] | [
"http://www.reddit.com/r/IAmA/comments/ns293/links_are_nsfw_graphic_images_iama_person_that/"
] | [
[
"http://upload.wikimedia.org/wikipedia/commons/thumb/0/08/Catecholamines_biosynthesis.svg/264px-Catecholamines_biosynthesis.svg.png"
],
[
"http://upload.wikimedia.org/wikipedia/commons/thumb/0/08/Catecholamines_biosynthesis.svg/264px-Catecholamines_biosynthesis.svg.png"
]
] | |
1ltjo9 | how do hypnotists make people do stupid things on stage? | I understand general hypnosis is mostly a state of intense focus or relaxation, like when you are at the climax of a good book and you can't hear someone talking to you because you are so involved in whats going on, but I have no idea how you get someone to act like a chicken or what not and then have them not remember... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ltjo9/eli5_how_do_hypnotists_make_people_do_stupid/ | {
"a_id": [
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"score": [
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],
"text": [
"They're not really pretending. The brain has a great capability to trick itself...if it wants to. The object of stage 'hypnosis' is to make the subject want to fool themselves.\n\nIf you got up on stage... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=iBVbjKGWgu4"
],
[]
] | |
7sy2ax | how bacteria appears in its enironment? | For example salmonella has best chances to be in eggs. How does the bacteria appear in there. where di it came from? Is it in the air and egg is just the best environment for it? Or is it in the egg "by default"? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7sy2ax/eli5_how_bacteria_appears_in_its_enironment/ | {
"a_id": [
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],
"score": [
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2,
2
],
"text": [
" > Or is it in the egg \"by default\"?\n\nFirst the chicken needs to have salmonella living in it, and then the bacteria can enter the egg as it is forming in the oviduct of the chicken.",
"Thanks ... | [] | [] | [
[],
[],
[]
] | |
25smg0 | why does bring your knees up to your chest relieve stomach pain? | Just wondering how bringing your knees up to your chest relives stomach pain. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25smg0/eli5_why_does_bring_your_knees_up_to_your_chest/ | {
"a_id": [
"chkds69",
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"score": [
32,
5,
2
],
"text": [
"Something along the lines of: when you bend your knees up to your abdomen, it relieves the pressure inside your abdominal cavity that is causing the pain (usually triggered by the nerves in the lining ... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Squat_toilet",
"http://www.youtube.com/watch?v=0WQaqeC_wME"
],
[]
] | |
ryjou | Why does my face gets flushed after drinking alcohol? | askscience | http://www.reddit.com/r/askscience/comments/ryjou/why_does_my_face_gets_flushed_after_drinking/ | {
"a_id": [
"c49npd5"
],
"score": [
2
],
"text": [
"Are you Asian? If so, it's probably [this](_URL_0_)"
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Alcohol_flush_reaction"
]
] | ||
2jvbml | why do old people always put those bright green tennis balls on their walkers? | Is it a cultural thing? Does Wilson have a manufacturing deal with walker companies to put tennis balls on the bottom of each walker in America?
What is the origin of this? Who first started doing this? And why tennis balls as opposed to say, baseballs?
[Here's a picture of what I'm talking about.](_URL_0_) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2jvbml/eli5_why_do_old_people_always_put_those_bright/ | {
"a_id": [
"clfeegf",
"clfef0e",
"clfeti5"
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"score": [
10,
10,
3
],
"text": [
"its to make it easier to push along a carpet and less risk of catching or buffing wooden floors ",
"The tennis balls help with traction so the walker can slide easily while the person is walking, ... | [] | [
"http://bp3.blogger.com/_W360_zGFGNk/SJTnCfOsU8I/AAAAAAAAAaw/0I77rpIoDzI/s1600-h/ball1.jpg"
] | [
[],
[],
[]
] | |
3ohmvd | The Articles of Confederation allowed Canada to join the US if desired. Was this a serious prospect at the time? | Article 11 of the Articles of Confederation specifically says that Canada can join the US if it wants to. Was this mostly wishful thinking, or was there serious thought at the time that Canada wished to become a part of the US?
And I'm not aware of the US Constitution having any similar clauses. Is there any specific ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ohmvd/the_articles_of_confederation_allowed_canada_to/ | {
"a_id": [
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],
"score": [
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],
"text": [
"It was indeed, though more so before the American Civil War. Donald Warner's 1960 book, *The Idea of Continental Union: Agitation for the Annexation of Canada to the United States, 1849-1893* is one of the more complete works. I'm more familiar ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3jmbta/why_wasnt_there_a_stronger_attempt_to_connect/"
]
] | |
2mqfpf | why does sleeptalking happen? like, why do our in-dream actions correspond with our real ones? | Why is it that when I can't speak in a dream, I say it out loud? What does my dream self have to do with my real self? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2mqfpf/eli5_why_does_sleeptalking_happen_like_why_do_our/ | {
"a_id": [
"cm6ndd6"
],
"score": [
2
],
"text": [
"It's your body not completely disengaging your body from your brain during dream state. Call it a mild form of sleep walking. Ever get those ticks in your arms or legs as you fall asleep? This is your mind \"testing\" to see if it has disengaged... | [] | [] | [
[]
] | |
t0gbq | At what point does .9 repeating differ from 9.../10...? | askscience | http://www.reddit.com/r/askscience/comments/t0gbq/at_what_point_does_9_repeating_differ_from_910/ | {
"a_id": [
"c4ihgst",
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"score": [
6,
3
],
"text": [
"Once it is infinite/recurring. There is a distinct difference between going on for a really long time, and being defined as an infinite sequence of 9s.",
"The important thing here is that .999... is *not* a process, it i... | [] | [] | [
[],
[]
] | ||
1il0mn | How did the passage of the 14th amendment change the powers of the US states? [US History] | I understand that before the 14th amendment, US states could potentially regulate a number of things they cannot regulate now, such as the things the Bill of Rights protects (speech, search and seizure, etc). Is this correct and can you give me examples of things we now consider to be rights that were restricted before... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1il0mn/how_did_the_passage_of_the_14th_amendment_change/ | {
"a_id": [
"cb5jz8y",
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],
"score": [
2,
2
],
"text": [
"Here is John Bingham, author of the relevant section of the 14th Amendment, talking about it, post-ratification:\n\n > Sir, before the ratification of the amendment, the State could deny to any citizen the right of trial by ... | [] | [] | [
[
"http://scholar.google.com/scholar_case?case=17333436011832420363",
"http://books.google.com/books?id=76Q3AAAAIAAJ&pg=PA84&lpg=PA84#v=onepage&q&f=false"
],
[
"http://supreme.justia.com/cases/federal/us/561/08-1521/opinion.html"
]
] | |
1dhroj | What makes peanut butter & jelly different in terms of stickiness? | If peanut butter gets on your hand, you can wipe it off with a napkin and feel clean. If jelly gets on your hand it will always feel at least a little sticky until you wash it. Why is the cohesion in peanut butter stronger than jelly, but the adhesion to skin is weaker? | askscience | http://www.reddit.com/r/askscience/comments/1dhroj/what_makes_peanut_butter_jelly_different_in_terms/ | {
"a_id": [
"c9qihy1"
],
"score": [
2
],
"text": [
"Here's a recipe for peanut butter:\n\n_URL_0_\n\nAnd here's one for jelly:\n\n_URL_1_\n\nLook at the sugar difference: The peanut butter has 1.5 teaspoons of honey for 1.5 cups of PB. Since the jelly recipe makes 8 cups, that works out to about ... | [] | [] | [
[
"http://www.foodnetwork.com/recipes/alton-brown/homemade-peanut-butter-recipe/index.html",
"http://www.food.com/recipe/strawberry-jelly-198688"
]
] | |
3bunxy | why do rich people always pursue more money? isn't there a ceiling in which they can already have everything they've ever wanted/needed? | I've spoken to some people and I get a lot of opinions. To some degree I assume this question only has opinionated answers, but I was hoping to hear an explanation of the reason behind needing so much more. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3bunxy/eli5why_do_rich_people_always_pursue_more_money/ | {
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"csq073j",
"csq0cap",
"csq0nlj",
"csq0yok",
"csq1dj9",
"csq1qqj",
"c... | [] | [] | [
[
"http://content.time.com/time/magazine/article/0,9171,2019628,00.html"
],
[],
[],
[
"https://en.wikipedia.org/wiki/Hedonic_treadmill"
],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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] | |
42t758 | During the Late Bronze Age, what kinds of objects would be made of iron, and how common/available were they? | It's my understanding that there were in fact iron objects being made during the bronze age, but I don't know much else about bronze age iron-working. What types of objects would have been typically made with iron at that time? Are there certain types of objects that would be made in iron but not bronze, or vice-versa?... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/42t758/during_the_late_bronze_age_what_kinds_of_objects/ | {
"a_id": [
"czczpfs"
],
"score": [
3
],
"text": [
"Early iron wasn't particularly better than bronze. In fact, crude iron is often _softer_ than bronze. As both copper and tin melt at low temperature, bronze is easy to work with. It's also easy to mass-produce objects in bronze, where early steel... | [] | [] | [
[]
] | |
23x4lr | if scientist can reach absolute zero what will it provide in the field of science and everyday living? | When I learned this a couple years back, this question pop into my head. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23x4lr/eli5_if_scientist_can_reach_absolute_zero_what/ | {
"a_id": [
"ch1fjz4"
],
"score": [
3
],
"text": [
"It would mean that a lot of our understanding of physics and chemistry is wrong so we'd have to do a lot of serious work to try to fix science. Absolute zero being impossible to reach is one of the most fundamental tenets of science right now, it... | [] | [] | [
[]
] | |
73xubc | if men are required to register with selective service, why not automatically have men registered when they turn 18? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/73xubc/eli5_if_men_are_required_to_register_with/ | {
"a_id": [
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"score": [
83,
37,
11,
11,
9,
5
],
"text": [
"Because this way, you have to sign a document promising to go to war if needed so when they tell you and you say \"no\" they can for... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
13q4eb | What are birds calling for every morning, hours on end? | I live in suburban Australia and, as many others can attest, we get an absolute symphony of different bird calls every morning from about 4am through 9am. What are they calling for that never seems to get answered? I thought mating was a seasonal thing... | askscience | http://www.reddit.com/r/askscience/comments/13q4eb/what_are_birds_calling_for_every_morning_hours_on/ | {
"a_id": [
"c766kes"
],
"score": [
2
],
"text": [
"There are [many reasons](_URL_2_) why birds call, and it has more to do with just reproduction. Calling happens at dawn and dusk because the air is more likely to be still. Calls carry father at these hours then during the middle of the day. It s... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Dawn_chorus_(birds)",
"http://www.birds.cornell.edu/AllAboutBirds/studying/birdsongs/chorus/document_view",
"http://en.wikipedia.org/wiki/Bird_vocalization#Function"
]
] | |
203mro | if jupiter is made of gas and has no solid surface how did shoemaker-levy 9 make impact craters? / marks? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/203mro/eli5_if_jupiter_is_made_of_gas_and_has_no_solid/ | {
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"score": [
7,
5,
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],
"text": [
"First, the center of Jupiter has such high pressure, it does become solid. But the impact marks aren't craters as much as an insane amount of energy disrupting the normal currents ... | [] | [] | [
[],
[],
[],
[
"https://www.youtube.com/watch?v=N7VCdGo_ZmU"
]
] | ||
7zy1xb | What Native American cooking traditions have made their way into other cultures' cuisines? | I was just talking to my brother about his trip to Paris, and he commented on how there were many great restaurants (of course). He said that these restaurants not only featured French food, but also represented regions France had colonized in its history (North African, Vietnamese, etc.).
I jokingly asked him if ther... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7zy1xb/what_native_american_cooking_traditions_have_made/ | {
"a_id": [
"durjnyq",
"durp4mb",
"durprvh",
"duskye3"
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"score": [
24,
21,
57,
4
],
"text": [
"I know this doesn't answer the question you asked here, but I think you would be interested in an earlier post of mine:\n\n* [Where are all the Native American restaurants? Was ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/7b57sq/where_are_all_the_native_american_restaurants_was/dpfvcw5/"
],
[
"https://upload.wikimedia.org/wikipedia/commons/7/7a/Skillet_cornbread_%28cropped%29.jpg",
"https://tastebudsmgmt.com/site/wp-content/uploads/2013/06/Roasted-Corn-Grits.jpg",
... | |
37rapl | Were pirates like Kidd and Blackbeard mythologized in their time as they are today? | For instance, would the general public know of them and believe that they buried treasure, etc. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/37rapl/were_pirates_like_kidd_and_blackbeard/ | {
"a_id": [
"crp7t3r"
],
"score": [
3
],
"text": [
"If by \"in their time\" you mean while they were active pirates, not really - but in the years after happened quite a bit. Books such as Alexandre Exquemelin's *History of the Bouccaneers of America* and Charles Johnson's *A General History of t... | [] | [] | [
[]
] | |
e9cvr2 | Is there a good way to quantify how "random" a given method of shuffling cards is? | I used to shuffle cards the normal way, split it in half and then recombine, but then I realized: the topmost cards in the deck still stay mostly on top, and the bottommost cards still stay mostly on the bottom, so you're not really getting a completely random distribution, no matter how many times you shuffle the deck... | askscience | https://www.reddit.com/r/askscience/comments/e9cvr2/is_there_a_good_way_to_quantify_how_random_a/ | {
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"text": [
"In cryptography, there are multiple tests used to try to \"quantify\" how random a set of numbers is (usually a set that's been created by a random number generator). I'm sure yo... | [] | [] | [
[],
[],
[],
[]
] | |
1kyrwl | Did ancient explorers ever go to the north or south pole? If not, how close did they come? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1kyrwl/did_ancient_explorers_ever_go_to_the_north_or/ | {
"a_id": [
"cbu38li",
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"score": [
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7
],
"text": [
"No, ancient - I assume you mean the ancient civilizations of the Mediterranean, Near East, etc. - explorers never reached that far. Reaching the north and south poles required navigational techniques/instruments and shipbui... | [] | [] | [
[],
[
"http://www.reddit.com/r/AskHistorians/comments/1iaisp/was_it_ever_possible_for_prehistoric_humans_to/",
"http://www.reddit.com/r/AskHistorians/comments/1fcgkk/do_we_know_or_do_we_have_any_evidence_of_any/",
"http://www.reddit.com/r/AskHistorians/comments/11cmiu/is_it_possible_that_the_native_in... | ||
10qsjj | Is there an estimated maximum number of planets that can orbit a star? | I know the answer won't be a simple concrete mathematical number, but I'm just wondering if there is any sort of "generally accepted" range for such a figure. I'm referring to stable planetary systems that will orbit this star (or pair of stars) for a very long time.
Can a star have up to 50 or 100 planets orbiting... | askscience | http://www.reddit.com/r/askscience/comments/10qsjj/is_there_an_estimated_maximum_number_of_planets/ | {
"a_id": [
"c6fulmq",
"c6fxry8",
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"score": [
14,
4,
9
],
"text": [
"The mass and density of the initial accretion disk limits the total cumulative size (and number) of the orbiting bodies that form around a star. The term \"planet\" is used to refer to objects of a cer... | [] | [] | [
[],
[],
[
"http://arxiv.org/abs/0906.4369"
]
] | |
4n6dx7 | why is the sound quality at a drive through so bad? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4n6dx7/eli5_why_is_the_sound_quality_at_a_drive_through/ | {
"a_id": [
"d416p0c",
"d41colf"
],
"score": [
7,
4
],
"text": [
"You mean like the speaker to talk to the guy taking the order?\n\nThere isn't any incentive to make it good quality. it's not like your rocking out to some heavy metal through it. You're just talking to the guy. If you ca... | [] | [] | [
[],
[]
] | ||
hvzw4 | I there a theoretical limit to how heavy an atom can be? | With the introduction of Elements 114 - 116 I started thinking about this. | askscience | http://www.reddit.com/r/askscience/comments/hvzw4/i_there_a_theoretical_limit_to_how_heavy_an_atom/ | {
"a_id": [
"c1yu73y"
],
"score": [
4
],
"text": [
"Yes. I mean we're kind of already there right? Making atoms that are barely able to hold their nuclei together. The strong nuclear force that holds nucleons together is quite short ranged and can't really \"reach\" across the entire nucleus. It b... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Island_of_stability",
"http://en.wikipedia.org/wiki/Feynmanium"
]
] | |
2ilwqi | Is there a reason why tiny Pacific Island nations exist? | It seems to me that forming a federation or even becoming a single state would be greatly beneficial in terms of GDP, security, resource sharing, and influence. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ilwqi/is_there_a_reason_why_tiny_pacific_island_nations/ | {
"a_id": [
"cl3cyh5"
],
"score": [
33
],
"text": [
"This is a bit like asking \"Why don't Canada and America become one state? It would benefit both of them!\"\n\nThey exist for the same reasons that any other nation exists. You have areas of land populated by people with fairly homogeneous bac... | [] | [] | [
[]
] | |
6i9p6s | why are side scrolling platformers almost always scrolling from right to left? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6i9p6s/eli5_why_are_side_scrolling_platformers_almost/ | {
"a_id": [
"dj4jbi0"
],
"score": [
3
],
"text": [
"What games are you thinking about...Mario and Sonic are left to right ?"
]
} | [] | [] | [
[]
] | ||
a8g1ch | Did married couples actually sleep in separate twin beds as depicted in old movies from the ‘30s, ‘40s, and ‘50s? Or was it just for the propriety of the movies? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a8g1ch/did_married_couples_actually_sleep_in_separate/ | {
"a_id": [
"ecax37d",
"ecburpl"
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"score": [
62,
139
],
"text": [
"Additionally did this movie reality perpetuate couples to believe this was a traditional norm?",
"Yes, some did!\n\nFirst of all, we have to recognize that bedroom habits historically varied by class. In the nineteent... | [] | [] | [
[],
[
"https://www.instagram.com/p/BFf7IT_Gc4Q/?taken-by=soanebritain"
]
] | ||
23ejze | please eli5 ... why is the headrest part of most car's seats designed to be so angled forward? | it is so uncomfortable but I'm sure there must be a reason.
note: not children's car seats, I mean normal passenger seats. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23ejze/please_eli5_why_is_the_headrest_part_of_most_cars/ | {
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"score": [
2,
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11,
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"text": [
"I too am interested. It always hurts my neck/head/back. I just want a straight head rest!",
"I think the head rest is more for whiplash in the event of a car crash. It prevent... | [] | [] | [
[],
[],
[],
[]
] | |
ivnbk | Anyone here work with holographic technology? Are we getting anywhere near the stuff we've seen in movies for the last 30+ years? | After playing Mass Effect 2 and seeing holograms *everywhere*, I'm just curious about how far we've come and if anyone here has anything to say about this kind of technology. Is it even possible to produce the effects we see in movies or is it a pipe-dream? | askscience | http://www.reddit.com/r/askscience/comments/ivnbk/anyone_here_work_with_holographic_technology_are/ | {
"a_id": [
"c270ugu"
],
"score": [
3
],
"text": [
"A research group where I work is working on something very similar to the type of device shown in [this video](_URL_0_). This is, of course, nothing like a hologram in science fiction.\n\nI believe that some companies are working on holographic ... | [] | [] | [
[
"http://vimeo.com/610602",
"http://en.wikipedia.org/wiki/Volumetric_display"
]
] | |
4xgfir | what would the pros and cons of having your kid learn an additional langauge when they're little in a special program? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4xgfir/eli5_what_would_the_pros_and_cons_of_having_your/ | {
"a_id": [
"d6f8r8h",
"d6f90h2"
],
"score": [
3,
6
],
"text": [
"Do it. and this whole thing about there being peaks isn't so important. Learning at any age is GOOD. Spanish is a good language to know especially in USA. It will be useful to them. \n\nNot to mention that you are basica... | [] | [] | [
[],
[]
] | ||
3iyw3v | when i'm talking and all of a sudden air just halts, i nearly choke and can't talk for a second until i take a breathe? (with air still in my lungs) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3iyw3v/eli5_when_im_talking_and_all_of_a_sudden_air_just/ | {
"a_id": [
"cukx4k4",
"cul2zb4"
],
"score": [
5,
3
],
"text": [
"Are you sure it's not a mild panic attack?",
"This sounds like a medical problem. Ask at /r/AskDocs "
]
} | [] | [] | [
[],
[]
] | ||
8b204p | why do oceans exist? | What I mean is, why aren't oceans absorbed into the sea bed the way water is on a sandy beach? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8b204p/eli5_why_do_oceans_exist/ | {
"a_id": [
"dx3atzn"
],
"score": [
2
],
"text": [
"Oceans cannot be absorbed into the sea bed because below the sea bed there is bedrock and the water is already saturated within the sea bed. Open water sits on top of the water within the sea bed."
]
} | [] | [] | [
[]
] | |
3bmncf | the differences between synthetic marijuana and actual marijuana and why synthetic is apparently more dangerous. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3bmncf/eli5the_differences_between_synthetic_marijuana/ | {
"a_id": [
"csni4of"
],
"score": [
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"text": [
"Synthetic marijuana is in no way related to real marijuana. It is plant material that has been sprayed with one or more of any number of chemicals that happen to affect the same parts of the brain as the THC in real weed. It is dangerous because ... | [] | [] | [
[]
] | ||
6h45aw | Is there a limit to how big speakers can be made today? | A while back there was an episode of Rick and Morty where they perform to some giant alien heads using a 'top secret' US gov't amphitheater (?) with humongous speakers. Is it possible for humans to build speakers like this today? Or would impedance limit the amount of electrical current in the coils, such that they wou... | askscience | https://www.reddit.com/r/askscience/comments/6h45aw/is_there_a_limit_to_how_big_speakers_can_be_made/ | {
"a_id": [
"diviiwz",
"diwbte3"
],
"score": [
6,
2
],
"text": [
"They can get [pretty big](_URL_0_). Big speakers indeed work less well for higher frequencies, but its more to do with the fact that they start to [beam](_URL_1_). A 2m wide speaker that plays anything above 500 Hz will se... | [] | [
"https://youtu.be/n4Xp6g-_UUw?t=5s"
] | [
[
"https://www.youtube.com/watch?v=bI-Ztvx0w9I",
"http://www.troelsgravesen.dk/Beaming.htm"
],
[]
] | |
2axlbd | the "power factor" of ac electric power and how it relates to things we use in the home and office | I am barely literate in things electrical, so my attempt at a ELI5 answer for myself (which may be totally wrong) is that if something has a motor in it (a washing machine, a fan) then the revolutions of the motor kind of don't match the revolutions of the generator at the power plant making the AC power. So you lose s... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2axlbd/eli5_the_power_factor_of_ac_electric_power_and/ | {
"a_id": [
"cizrppo",
"cizsqmr"
],
"score": [
2,
2
],
"text": [
"Alice buys stuff from Amazon and they ship it to her and she likes it and keeps it. Everyone is happy! Alice has a power factor of 1.0.\n\nBob buys stuff from Amazon and they ship it to him but he doesn't like half of it a... | [] | [] | [
[],
[]
] | |
1j7zco | When did it become popular to group the Caribbean with Latin America? | Economically, politically, historically, linguistically and culturally the Caribbean is much closer to northern North America, specifically the US and Canada. Why is the counterintuitive grouping often used in official geoschemes, for example the UN security council seating (which is particularly egregious, since there... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1j7zco/when_did_it_become_popular_to_group_the_caribbean/ | {
"a_id": [
"cbc29en"
],
"score": [
7
],
"text": [
"Part of this is politics not history, I would doubt very much that Jamaica, Haiti and other English and French ex-colonies associate primarily with Latin America. However, debating this is not the point of this subreddit so I'll leave this here.\... | [] | [] | [
[]
] | |
viiw7 | Couple questions on medieval cities | I have a few questions about cities in the medieval era starting mid 1000s, around when William the Conqueror was knocking about invading England and such.
1. What ranks were there within a city for administrative purposes? Mayor at the top, then magistrates, any others?
2. What was the most culturally diverse city ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/viiw7/couple_questions_on_medieval_cities/ | {
"a_id": [
"c54sufc",
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6
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"text": [
"This is a bit later but Thessaloniki (second largest city in Greece). The Jews were kicked out of Spain in the mid 1400s and thousands moved there, so the Ottoman city had Muslims, Christians and Jews. They lived together un... | [] | [] | [
[],
[
"http://www.imarabe.org/exposition-ima-1642"
]
] | |
5ej9ju | Why did military uniforms suddenly change from bright colours to kakki? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5ej9ju/why_did_military_uniforms_suddenly_change_from/ | {
"a_id": [
"dacwzos"
],
"score": [
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"text": [
"Because at the late 19th century firearms (rifles) became increasingly deadly, reaching their maximum fire range (up to 1500-2000m, Mauser 98, for example), not to mention introduction of machine guns with high rate of fire (around 600 rounds per... | [] | [] | [
[]
] | ||
61juej | Why can't we use smaller wavelengths of light instead of electron microscopes? | We have telescopes that can see ultraviolet light coming from the sun, and computers that can transform that info into visible colors. Yet we can't seem to use that same technology to bounce ultraviolet light off of specimen and get better resolution. Why is that? | askscience | https://www.reddit.com/r/askscience/comments/61juej/why_cant_we_use_smaller_wavelengths_of_light/ | {
"a_id": [
"dffcl4l",
"dfgmrbq"
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"score": [
20,
3
],
"text": [
"Electron microscopes can get in the order of 50 pm resolution, while diffraction based systems rely on the wavelengths (as you've picked up on). However to get down to 50 pm visual resolution, you need light with a waveleng... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Diffraction-limited_system"
],
[
"https://en.wikipedia.org/wiki/X-ray_microscope"
]
] | |
2wfnr5 | where do worms go in the winter? | I mean in cold weather climates where the ground freezes in the winter. Do worms just sorta freeze too and thaw in the spring? Do they all die and new ones hatch when the weather warms?
Edit: spelling, and yes I meant common earthworms. Thanks for the response! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2wfnr5/eli5_where_do_worms_go_in_the_winter/ | {
"a_id": [
"coqcztf"
],
"score": [
31
],
"text": [
"If you're referring to earthworms, they simply go deeper into the ground. Even in harsh winters the ground doesn't usually freeze more than ~~an inch or two~~ a few feet deep, so the worms just burrow below the frozen layer and wait for a few w... | [] | [] | [
[]
] | |
7ab6yw | how does a company separate from a parent company, or rather, how is the parent company compensated for the lost value? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7ab6yw/eli5_how_does_a_company_separate_from_a_parent/ | {
"a_id": [
"dp8jpwf",
"dp8klzt"
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"score": [
3,
2
],
"text": [
"Any company, be it parent or a subsidiary/child company, has shares, meaning who owns the company (Simple way to imagine it would be- if a company has 100 shares, each share is 1% of the company, limited liability companies ... | [] | [] | [
[],
[]
] | ||
7f2qpx | why when looking at a certain point without blinking for few seconds you start seeing double? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7f2qpx/eli5_why_when_looking_at_a_certain_point_without/ | {
"a_id": [
"dq93e1s"
],
"score": [
4
],
"text": [
"Not everybody sees double. If you do, it is probably because your eyes get tired and stop looking in exactly the same direction. This is technically known as a strabismus."
]
} | [] | [] | [
[]
] | ||
ew42wd | why does “cleaning” our ears with a cotton swab feel so good when we’re told not to put anything in them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ew42wd/eli5_why_does_cleaning_our_ears_with_a_cotton/ | {
"a_id": [
"ffzoa9p",
"ffzsh7l",
"ffzxoe9",
"fg067h1"
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"score": [
29,
1215,
2,
2
],
"text": [
"A big part of the reason why it feels good is because that part of your body doesn’t experience the sense of touch very often (at least compared to the rest of your body) so th... | [] | [] | [
[],
[],
[],
[]
] | ||
418qsl | Who else, other than the British Empire, profited from long distance communications in the 1800s? | My husband was talking about this yesterday and I'd really like to impress him with my 'knowledge' on the subject. He said Gandhi used them to his advantage but I was wondering if anyone benefited from the wire, boats, trains etc... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/418qsl/who_else_other_than_the_british_empire_profited/ | {
"a_id": [
"cz0r9r2"
],
"score": [
3
],
"text": [
"This is only tangentially a partial answer or side note to your question but it's one of my favorite historical anecdotes so I hope you don't mind me sharing it.\n\nIn 1876 Egypt basically went bankrupt and the French and British exercised joint ... | [] | [] | [
[]
] | |
2w574i | how are people born "geniuses"? | Like how are people just born with some special talent? Like is there something going on with their brain when they are born? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2w574i/eli5how_are_people_born_geniuses/ | {
"a_id": [
"conovan",
"conwf5m"
],
"score": [
4,
7
],
"text": [
"Most of the time one part of the brain is different (worse than normal) and another part is overfishing to compensate. Or their brains just have more synapses. Can be a lot of other things too.",
"The actual answer is t... | [] | [] | [
[],
[]
] | |
8x0f41 | why does a sudden influx of energy break objects? | Ive notice that when energy, specifically kinetic, is transfered in a short amount of time it tends to break things, but if added over a lot longer period it doesn't, like say I press against a wall a certain number of times pushing in then pulling out, compared to me just suddenly punching it or how gunpowder doesn't ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8x0f41/eli5_why_does_a_sudden_influx_of_energy_break/ | {
"a_id": [
"e1zvqqq",
"e1zzbsm"
],
"score": [
6,
4
],
"text": [
"Newton's second law, F = ma. When a fast moving object is suddenly stopped, acceleration is very large and the resulting forces are enormous. If these forces exceed the yield strength of the material involved, the object bre... | [] | [] | [
[],
[]
] | |
792cla | Is it true that income inequality in Ancient Rome was less than in the modern United States? | I have seen this [claim](_URL_0_) on many sites like Huffington Post and ThinkProgress. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/792cla/is_it_true_that_income_inequality_in_ancient_rome/ | {
"a_id": [
"dpp009z"
],
"score": [
5
],
"text": [
"First of all, neither the Business Insider, Huffington Post, nor ThinkProgress are historical publications. The story from that Business Insider article is sourced from a website called Per Square Mile and is written by the creator of that site, ... | [] | [
"http://www.businessinsider.com/even-the-roman-empire-wasnt-as-unequal-as-america-today-2011-12?IR=T"
] | [
[]
] | |
1umqm2 | why do heating pipes make a loud banging sound? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1umqm2/eli5_why_do_heating_pipes_make_a_loud_banging/ | {
"a_id": [
"cejmezm",
"cejmlm5",
"cejmsev"
],
"score": [
3,
2,
2
],
"text": [
"Based on the one that sits next to our couch-bed in our very small NYC apartment, it is the expansion/contraction of the metal and wood around the heated pipes/radiator that cause the loud banging, pops... | [] | [] | [
[],
[
"http://what-if.xkcd.com/6/",
"http://en.wikipedia.org/wiki/Water_hammer"
],
[]
] | ||
2kw030 | How to the water drops in clouds affect a plane's flight? Do they slow the plane down, or interfere with its thrust or lift vectors? | I have always wanted to become a pilot and understand most of the concepts of physics involved in a plane's flight, and now that I'm close to starting my pilot course (I'm 17 years old) I wanted to polish my knowledge a little more. If I have not formulated the question clearly enough feel free to ask, thanks! | askscience | http://www.reddit.com/r/askscience/comments/2kw030/how_to_the_water_drops_in_clouds_affect_a_planes/ | {
"a_id": [
"clqpgxl"
],
"score": [
2
],
"text": [
"Most of the droplets in a cloud will flow around the airplane. Water droplets will accumulate on the wings and body, and flow off of the back of the trailing edges. The drag imparted on the plane due to the mass of water is usually negligible, th... | [] | [] | [
[]
] | |
n85gv | the constitutional breaches of the national defense authorization act? | I understand the removal of Habeus Corpus is in violation of the Bill of Rights, but which of the Articles, if any? Article 1, Sec 8 allows Congress to make rules concerning capture, so it's legal in that sense. (Not to imply that it's just in any sense.)
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/n85gv/eli5_the_constitutional_breaches_of_the_national/ | {
"a_id": [
"c370cy9",
"c372m25",
"c370cy9",
"c372m25"
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"score": [
3,
2,
3,
2
],
"text": [
" > I understand the removal of Habeus Corpus is in violation of the Bill of Rights\n\nWhy?",
"5th amendment:\n\n > No person shall ... be deprived of life, liberty, or propert... | [] | [] | [
[],
[],
[],
[]
] | |
1cd8t5 | What are some other proposed dates for the end of the Roman Empire aside from the traditional 476? | I'm interested to see if there has been any consideration for 235 when Alexander Severus was assassinated, but there are undoubtedly many more. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1cd8t5/what_are_some_other_proposed_dates_for_the_end_of/ | {
"a_id": [
"c9fe1lx"
],
"score": [
7
],
"text": [
"A date for you to consider is 1453. The Fall of Constantinople was the death blow to the Byzantine Empire, and in essence the Eastern Roman Empire. "
]
} | [] | [] | [
[]
] | |
2kp2wu | what makes something look modern? | Bonus: Why do things that once looked very modern (iPhone 4, for example) suddenly look antiquated when a newer version comes out (iPhone 5S). (same with iPhone 5S to iPhone 6)
Another example. My university recently got a new sciences building, and it looks modern as fuck. Its all boxy and juts out here and there. Wh... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kp2wu/eli5_what_makes_something_look_modern/ | {
"a_id": [
"clne2kh",
"clnecab"
],
"score": [
2,
10
],
"text": [
"Because its boxy and white, grey, black, and made with concrete ",
"There's really nothing \"modern.\" The gist of it is that every period has \"modern\" styles. To our current day and age, sleek = modern. What sleek me... | [] | [] | [
[],
[]
] | |
2c49tc | Why did the nazis spend time and resources transporting Jews to concentration camps by train to gas them rather than shooting them on the spot? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2c49tc/why_did_the_nazis_spend_time_and_resources/ | {
"a_id": [
"cjbsz3m",
"cjbwfk7"
],
"score": [
6,
10
],
"text": [
"hi! you may be interested in checking out these previous threads\n\n[Why did the Nazis keep Jews as prisoners instead of killing all of them immediately?](_URL_3_)\n\n[Why did the Nazis keep people in concentration camps in... | [] | [] | [
[
"http://www.reddit.com/r/AskHistorians/comments/193b20/if_hitler_wanted_to_kill_all_jews_why_didnt_he/",
"http://www.reddit.com/r/AskHistorians/comments/1z5vp8/why_didnt_the_nazis_just_kill_everyone_in_the/",
"http://www.reddit.com/r/AskHistorians/comments/1qazfc/why_did_the_nazis_keep_people_in_conce... | ||
dq8wfx | sometimes when doctors flash light in your eyes, what do they exactly look for? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dq8wfx/eli5_sometimes_when_doctors_flash_light_in_your/ | {
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"text": [
"Except for the ophthalmologist, they are looking to see that your iris contracts quickly to the bright light. This shows that the eye - > brain - > eye pathway is working. If i... | [] | [] | [
[],
[],
[],
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2muad7 | how do college degree concentrations work? | Hypothetically, if a student were enrolled as a "Business Administration: Marketing" student, would he be pursuing an bachelor's degree in business administration with a concentration in marketing, or a business marketing degree? Or a Bachelor's of Science, with some sort of concentration in business?
It's just the na... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2muad7/eli5_how_do_college_degree_concentrations_work/ | {
"a_id": [
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"text": [
"First of all Bachelor of art and bachelor of science has more to do with the type of university or college you go to than what you are studying. For example, I go to BU and study chemistry, but will graduate with a Bachelor of Arts degree with ch... | [] | [] | [
[]
] | |
2ozqhu | why does mcdonald's charge $3 for a mcmuffin & coffee, but $3.59 for just a mcmuffin? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ozqhu/eli5why_does_mcdonalds_charge_3_for_a/ | {
"a_id": [
"cmrzekd",
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"score": [
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"text": [
"This is a marketing trick. It does two things. One, it's get you in the habit of ordering the grouped items (for other things like meals, it cost more). You will subconsciously do this in the future ou... | [] | [] | [
[],
[],
[]
] | ||
3ngni4 | what are "common sense" gun laws? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ngni4/eli5what_are_common_sense_gun_laws/ | {
"a_id": [
"cvnuywg"
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"text": [
"In politics \"common sense\" means \"vague to the point everyone thinks I agree with them\".\n\nIt is a way to campaign against something without offering any real solutions of your own, because, hey, who can be against common sense?\n\nOnce deta... | [] | [] | [
[]
] | ||
3kq1hm | we donate to cancer research and treatments are getting better, but why do we still have to pay the enormous costs for said treatment? | My friends sister has cancer, her treatments cost about 100k and she needs 6 of them. I am beside myself with helplessness for her.
If we (as a nation) are doing all of these runs, races, telethons and fundraisers and all these things that drive dollars into cancer research, are we just in effect paving the way for n... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3kq1hm/eli5_we_donate_to_cancer_research_and_treatments/ | {
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"Cancer treatment costs *much more* than the amount being paid to the research centers. The donations are used to do investigations to discover new, better ways to treat cancers; but it does not include ... | [] | [] | [
[],
[],
[]
] | |
1s2wpp | When evidence of water is found on very distant planets through the Hubble telescope, what distinguishes it as water from that distance and not another liquid? | askscience | http://www.reddit.com/r/askscience/comments/1s2wpp/when_evidence_of_water_is_found_on_very_distant/ | {
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"Actually, it is not liquid water that was detected, but the presence of water in the atmospheres of several planets.\n\nTo detect the presence of different compounds in the atmosphere, absorption spectr... | [] | [] | [
[],
[],
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572010 | if whatsapp chats are encrypted then how facebook is going to collect data from whatsapp chats for targeted advertising? | When WhatsApp introduced chat encryption feature, we were told that the chats will be end to end encrypted. Now how they are going to enforce their new TOS if chats are really encrypted? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/572010/eli5_if_whatsapp_chats_are_encrypted_then_how/ | {
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"Theoretically, if they are using end to end encryption correctly, no-one, Facebook included, can read the messages other than the sender and recipient(s). Now what is NOT encrypted... | [] | [] | [
[],
[],
[],
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zk1db | Can a black hole singularity be created by man? | I was watching this video: _URL_0_
@ around 12:40 there is a claim that a black hole singularity was created and that the location was near the dyno testing facility. Then they show a video capture showing what they think may have been the black hole itself with a claim that they were missing some hardware afterwards... | askscience | http://www.reddit.com/r/askscience/comments/zk1db/can_a_black_hole_singularity_be_created_by_man/ | {
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"text": [
"Related question: I can't remember where, but I've heard that if we were to weaponize all the heavy water found in our oceans and detonate the resulting bomb, a small black hole w... | [] | [
"http://www.youtube.com/watch?v=HA6am0rCwAk"
] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Large_Hadron_Collider",
"http://en.wikipedia.org/wiki/Ultra-high-energy_cosmic_ray",
"http://en.wikipedia.org/wiki/Chandrasekhar_limit",
"http://en.wikipedia.org/wiki/Micro_black_hole"
],
[]
] | |
jjoso | Besides Solar, and Hydro, are we likely to develop a method of generating electricity that isn't ultimately steam turning a fan? | Layman here. As I understand it, coal, natural gas, and even nuclear fission ultimately consist of generating heat to turn water into steam to drive a turbine.
Presumably even nuclear fusion would be the same, were we to develop that as a power source, and it's considered the "holy grail", right? Is that going to be t... | askscience | http://www.reddit.com/r/askscience/comments/jjoso/besides_solar_and_hydro_are_we_likely_to_develop/ | {
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"http://en.wikipedia.org/wiki/Thermal_efficiency#Carnot_efficiency",
"http://en.wikipedia.org/wiki/Thermoelectric_effect",
"http://en.wikipedia.org/wiki/Generation_IV_reactor",
"http://en.wikipedia.org/wiki/Pressurized_water_reactor",
"http://en.wikipedia.org/wiki/Radioisotope_thermoelectric_g... | |
k51iq | the president, what he can and can't do, and what makes him different from prime ministers and such? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/k51iq/eli5_the_president_what_he_can_and_cant_do_and/ | {
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"Most western democracies fall under one of three categories: The presidential system (e.g. the USA), the semi-presidential system (e.g. France) and the paliamentary system (e.g. Germany). These terms may seem confusing, as a... | [] | [] | [
[],
[]
] | ||
328bnf | When a substance is stretched beyond its elastic limit i.e. undergoes plastic deformation, in what form is the work done on it stored? And can we get it back? | When we stretch a material within its elastic limit, the work we do on it is stored in the form of potential energy and is given by .5*k*x^2. When we release the deforming force, the material goes back to its original dimensions and the stored potential energy is released in the form of kinetic energy. But when the sam... | askscience | http://www.reddit.com/r/askscience/comments/328bnf/when_a_substance_is_stretched_beyond_its_elastic/ | {
"a_id": [
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"When you deform a material you're causing atoms/molecules to displace, so you're adding kinetic energy. Unsurprisingly, it is dissipated as heat.\n\n_URL_0_\n\n > can we get that energy back?\n\nIn theory, yes, if heat is useful energy in any wa... | [] | [] | [
[
"http://www.me.umn.edu/courses/old_me_course_pages/me3221-sum/Overviews/Deformation/deformation.html"
]
] | |
36dmtf | When do birds developing in an egg start breathing or using their lungs? | askscience | http://www.reddit.com/r/askscience/comments/36dmtf/when_do_birds_developing_in_an_egg_start/ | {
"a_id": [
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"There's an event called \"pipping\", just before hatching, when the bird breaks through a membrane into an air cell just under the shell. This is when the lungs start working, and it's also when you sometimes start to hear the chick (still in th... | [] | [] | [
[]
] | ||
1g0tw0 | How did drummer boys/trumpet players actually function in battle? | As a drummer, I sometimes wonder how exactly drummer boys "controlled" armies, or at least gave them directions. Were there specific rhythms that indicated "charge" and "retreat?" Could they be heard across a wide battlefield, especially amongst the carnage and sounds of war? And why wouldn't a trumpet/bugle of some ki... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1g0tw0/how_did_drummer_boystrumpet_players_actually/ | {
"a_id": [
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"text": [
"Field musicians were/are required to learn numerous calls. I played with various Fife & Drum groups, including Williamsburg Fifes & Drums. Some of the calls include the Breakfast Call, The General (signal to strike the tents and prepare for ... | [] | [] | [
[
"http://lancraftfd.com/franka.html",
"http://www.nationalcivilwarbrassmusic.org/MusicalResources.html"
]
] | |
3pmie3 | what is the lorentz contraction? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3pmie3/eli5_what_is_the_lorentz_contraction/ | {
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"Imagine a car moving away from you. The time it takes for the light reflected off the front of the car to reach you, and the time it takes for the light reflected off the rear of the car to reach you, are for all intents and purposes the same whe... | [] | [] | [
[]
] | ||
162khi | How does your body know when someone is behind you? | People call it the "sixth sense" but how does it actually work? Why does your body get that tingling feeling when someone is behind you?
My hypothesis is that the pressure in the room changes just enough for your ear to pick up on it. How does it really work?
Edit: It's a hypothesis, not a theory | askscience | http://www.reddit.com/r/askscience/comments/162khi/how_does_your_body_know_when_someone_is_behind_you/ | {
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"In a quiet environment your sense of hearing is better than you think. If you stand near a wall, and lean in closer to it with your eyes closed, you can easily pick up audible, \"ambient\" sounds that... | [] | [] | [
[],
[],
[]
] | |
89lm42 | is every square inch of land in america owned by someone or some entity? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/89lm42/eli5_is_every_square_inch_of_land_in_america/ | {
"a_id": [
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"text": [
"All land in the US is technically owned by someone or by the federal or a state government. If there were any \"unclaimed\" land, it would (and did and does) default to state government ownership."
]
} | [] | [] | [
[]
] | ||
42vmij | each decade of the 20th century had a distinct character ie the 60s and hippies, the 80s and hairspray... what about the 19th century? was each decade defined by a certain style/music? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/42vmij/eli5_each_decade_of_the_20th_century_had_a/ | {
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"Back in the day, cultural trends would move more slowly. We didn't have TV, Radio, cars & airplanes to spread pop culture & then replace it with the next big thing.\n\nThere were definitely trends & fashion but it didn't come out of nowher... | [] | [] | [
[]
] | ||
3gca5v | why do high income and developed countries place such high taxes on their population compared to poor and undeveloped countries? | If you take a look at the wiki articles on country rankings by tax rates you will see that generally speaking, rich and developed countries have a high tax burden on their population compared to poor and undeveloped countries. The tax revenue as a percentage of GDP is high in developed countries, so are the individual ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3gca5v/eli5_why_do_high_income_and_developed_countries/ | {
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"text": [
"Rich people can afford to pay high taxes while still having enough left over to pay for food, clothing, shelter, and other necessities.\n\nAnd rich countries tend to provide costly government services l... | [] | [] | [
[],
[],
[]
] | |
cp5cbp | why do animals and other mammals follow the same body structure? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cp5cbp/eli5_why_do_animals_and_other_mammals_follow_the/ | {
"a_id": [
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"score": [
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5
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"text": [
"Because they are all related. Bilateral symmetry, the basic body plan of animals, was established long ago and all animals are descended from that common ancestor.",
"There's a few things to dissect here.\n\n1. Mammals a... | [] | [] | [
[],
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13y0sm | What have been some of the crazier Endtimes theories throughout history? | I just thought of this because of the whole world ending in December 2012/Mayan apocalypse nonsense. So is there one perticular apocalypse theory from history that really stands out as being crazy? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/13y0sm/what_have_been_some_of_the_crazier_endtimes/ | {
"a_id": [
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"my favourite recent one was when the Jehovah's Witnesses claimed the world was ending in '75 - of course they'd previously claimed a lot of dates including 1799, 1874, 1878, 1914, 1918 and 1925 but *THIS* was gonna be the re... | [] | [] | [
[],
[]
] | |
2vwplc | What do these markings on my Grandfather's helmet mean? _URL_0_ | This helmet belonged to my grandfather from when he served in World War II. On the back, there are two white lines painted on. I was told by my father that the two lines meant that he was sparred from participating in the Battle of the Bulge (one line meaning he would've been sent). I've been looking around for sources... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2vwplc/what_do_these_markings_on_my_grandfathers_helmet/ | {
"a_id": [
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"text": [
"Aaaaaaaaand I formatted it wrong... Sorry about that. \n\nHere's a link. _URL_0_ ",
"Do you know what rank he was? Two vertical lines like that is the symbol for a captains rank, and he may have improvised it on a new h... | [
"http://i.imgur.com/Kie8Tfm.jpg"
] | [] | [
[
"http://i.imgur.com/Kie8Tfm.jpg"
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[]
] | |
2wrgx9 | Why does hot water make more bubbles than cold when I'm washing my hands? | I've often noticed when using public sinks that if the faucet lets me get actual hot water i get a much better "foaming action" from whatever soap I'm using than if the water is cold. Is there a reason for this? | askscience | http://www.reddit.com/r/askscience/comments/2wrgx9/why_does_hot_water_make_more_bubbles_than_cold/ | {
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"There may be a few elements. \n\nHot water from a tap is a mixture of the hot water from a heater and cold water. Cold water has more gas dissolved so th... | [] | [] | [
[],
[],
[],
[],
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"https://syeilendrapramuditya.files.wordpress.com/2011/08/water_dynamic_viscosity_vs_temperature.gif",
"http://hyperphysics.phy-astr.gsu.edu/hbase/fluids/imgflu/surten3.gif"
]
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817d11 | if you burn more calories than you take in, how do you manage to remain alive? | Wisdom states, to lose weight, you have to burn more calories than you take in to lose weight. Logic leads me to understand that if you burn what you take in, you remain at the same weight. But, if you're doing either of those, how do you manage to remain functioning?
It seems you need energy derived from food. ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/817d11/eli5_if_you_burn_more_calories_than_you_take_in/ | {
"a_id": [
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"Because the car still has gas in the tank. That's what fat is; it's the amount of gas you still have in your tank.\n\nAnd yes, if you continually are at a caloric deficiency indefinitely (which would re... | [] | [] | [
[],
[],
[]
] | |
8gozuz | Is it a coincidence that all elements are present on Earth? | Aside from those fleeting transuranic elements with tiny half-lives that can only be created in labs, all elements of the periodic table are naturally present on Earth. I know that elements heavier than iron come from novae, but how is it that Earth has the full complement of elements, and is it possible for a planet t... | askscience | https://www.reddit.com/r/askscience/comments/8gozuz/is_it_a_coincidence_that_all_elements_are_present/ | {
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"d... | [] | [] | [
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"https://en.m.wikipedia.org/wiki/Francium",
"https://www.sciencealert.com/meet-the-rarest-natural-element-on-earth"
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"https://en.wikipedia.org/wiki/Technetium",
"https://en.wikipedia.org/wiki/Iridium"
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[],
[],
[],
[],
... | |
renyn | What would be the minimum number of transistors required to build a simple turing-complete computer? | askscience | http://www.reddit.com/r/askscience/comments/renyn/what_would_be_the_minimum_number_of_transistors/ | {
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"While there's some research into the smallest possible Universal Turing Machine (the current best has 2 states and uses a tape with 3 colours), I have no idea how you would actually build that out of transistors. For one thing, an official Turing... | [] | [] | [
[]
] | ||
2xwjug | why is black truffle so prized in the culinary industry? | Was in France last week and went out to a fancy dinner. Are waiter wouldn't stop talking about how lucky we are to be having black truffles and how it was the last week of the season. Imo it just seemed like a fancy mushroom. Why are they so prized? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2xwjug/eli5_why_is_black_truffle_so_prized_in_the/ | {
"a_id": [
"cp4125h"
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"text": [
"It all boils down to their rarity. Truffles are mycorrhizal this which means they will only fruit if grown in conjunction with certain types of trees. The mycelium of the mushroom (the vegetative body) forms a net and grows in between the cells o... | [] | [] | [
[]
] | |
94kv8s | difference between midi and mp3 file | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/94kv8s/eli5_difference_between_midi_and_mp3_file/ | {
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"text": [
"A MIDI file is “instructions” for how a song should be played, like sheet music but with more options. An mp3 is a compressed (smaller file size by sacrificing some fidelity) version of an actual recording of a song."
]
} | [] | [] | [
[]
] | ||
5l5tn8 | How was the Japanese Navy able to conceal their defeat at Midway from the Army or the population as a whole? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5l5tn8/how_was_the_japanese_navy_able_to_conceal_their/ | {
"a_id": [
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"score": [
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"text": [
"The IJN's efforts to conceal the scale of the defeat had a powerful patron in the form of Emperor Hirohito. The Naval General Staff informed the Emperor of the scale of the defeat on 8 June. This meeting was done privately, without any IJA repre... | [] | [] | [
[]
] | ||
bx4g30 | What is the process- start to finish, of a hurricane? | askscience | https://www.reddit.com/r/askscience/comments/bx4g30/what_is_the_process_start_to_finish_of_a_hurricane/ | {
"a_id": [
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"A hurricane requires a few things to form: warm, humid air, low vertical wind shear (the wind speed at the surface is similar to the speed in the upper troposphere), a latitude higher than about 5 degrees, and an instability to kick it off. I'm n... | [] | [] | [
[]
] | ||
7tdewn | Why did scientists estimate the Opportunity Rover to only last for 90 days, and why did it last for that much longer (14 years)? | Was it a miscalculation? Or a worse case scenario? What parameters are there for estimating the life span of a Rover?
Edit: Thanks to every single one of you who commented to get this question some traction :) And a big thanks to those who had an answer to it! | askscience | https://www.reddit.com/r/askscience/comments/7tdewn/why_did_scientists_estimate_the_opportunity_rover/ | {
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"The 90 days figure was the minimal time that the rovers had to survive according to design specifications. ... | [] | [] | [
[],
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[],
[],
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"https://imgur.com/a/BZfT2",
"https://trs.jpl.nasa.gov/bitstream/handle/2014/11979/02-0732.pdf"
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[],
[]
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3vifjv | why does holding your nose help stifle your vomit impulse? | We've all seen it on TV.
We've all seen it in movies.
Hell, we have all done it at one point or another.
So why does holding your nose help stifle your vomit response? Your nose has little to nothing to do with your gag reflex right? Why does it seem to help you make it to the bathroom on time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vifjv/eli5_why_does_holding_your_nose_help_stifle_your/ | {
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"Actually, allthough the nose is not directly connected to the muscles or gag reflex itself, the brain is very much involved in vomiting. So by holding your nose, you are blocking smells/neural signals that might trigger/help the urge to vomit.\n\... | [] | [] | [
[]
] | |
1ubd16 | Did 'white' skinned humans originate with albinism? | I just saw this [pic](_URL_0_), and was wondering if albino people who then had kids with dark skinned peers would produce the non-albino white we see today. If so, did white people then thrive in early Europe because of better camouflage in snowy enviroments? | askscience | http://www.reddit.com/r/askscience/comments/1ubd16/did_white_skinned_humans_originate_with_albinism/ | {
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"text": [
"No, albinism is different:\n\n_URL_2_\n\n > Albinism results from inheritance of recessive gene alleles and is known to affect all vertebrates, including humans.\n\nThere's variation in skin color and facial phenotype among... | [] | [
"http://images.nationalgeographic.com/wpf/media-live/nirvana_images/ngpc-2013/2013/11/30/238629_dsc00801--cb1385827600.jpg"
] | [
[
"https://en.wikipedia.org/wiki/Human_skin_color#Evolution_of_skin_color",
"https://upload.wikimedia.org/wikipedia/commons/6/6a/Unlabeled_Renatto_Luschan_Skin_color_map.svg",
"https://en.wikipedia.org/wiki/Albinism",
"http://essays.backintyme.biz/item/4"
],
[
"http://www.norseknights.com/im... | |
2bq6gy | the whole "corporations are people" thing and why people hate it so much. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bq6gy/eli5_the_whole_corporations_are_people_thing_and/ | {
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"It mostly comes from a place of ignorance where people have latched on to a catchphrase. '... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Legal_fiction"
],
[],
[],
[
"http://krugman.blogs.nytimes.com/2011/08/12/soylent-green-is-corporations/?_php=true&_type=blogs&_r=0"
],
[],
[],
[]
] | ||
30rpvh | if calories are just a unit of energy then how can things like redbull have 0 calories but still give you energy? | I feel like there's some crucial bit of understanding that I'm missing here. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30rpvh/eli5_if_calories_are_just_a_unit_of_energy_then/ | {
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"text": [
"Energy is an odd word when it comes to food. You derive energy only from foods containing calories. However, there are substances that for various reasons give you the perception of being energetic, or awake, or whatever. ... | [] | [] | [
[],
[]
] | |
50kv1w | In 1466 would the natives in Cuba have been aware of the Mayans or the Aztecs? If "yes" did the trade with either? If so what? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/50kv1w/in_1466_would_the_natives_in_cuba_have_been_aware/ | {
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"text": [
" The indigenous peoples of Cuba were the Taíno, an Arawak people who inhabited most of what is now Cuba, along with other Carribean islands such as Jamaica and Hispaniola. The Taíno have their roots in South America, partic... | [] | [] | [
[
"http://www.americanjourneys.org/texts.asp",
"http://www.nyboricua.com/comnovpg04.htm",
"http://news.nationalgeographic.com/news/2006/06/060612-caribbean.html",
"http://research.famsi.org/aztlan/uploads/papers/Canter-Yucatan-Channel-and-Trade.pdf"
],
[
"http://www.nabohome.org/meetings/glt... | ||
4fsp49 | Why do U.S. politicians refuse to label the genocide on the Natives as a 'genocide'? | For all intents and purposes, the United States actively teaches its citizens about the genocide on the Natives and settlements have been reached with the descendants of the victims.
But no U.S. Congress and/or President have ever labeled it as a 'genocide'. I've only been able to rely on my deduction skills and I ha... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4fsp49/why_do_us_politicians_refuse_to_label_the/ | {
"a_id": [
"d2bm3xn",
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"score": [
2,
3
],
"text": [
"On September 8, 2000, the head of the Bureau of Indian Affairs (BIA) formally apologized for the agency's participation in the \"ethnic cleansing\" of Western tribes. However, you are correct that no President (off the top o... | [] | [] | [
[],
[
"http://courses.missouristate.edu/ftmiller/Documents/jeffindianpolicy.htm",
"http://digital.library.okstate.edu/kappler/vol2/treaties/che0140.htm",
"http://www.indianaffairs.gov/cs/groups/public/documents/text/idc1-031606.pdf"
]
] | |
f8nzv7 | photon reflection off a mirror. | Does the exact same photon of light bounce back or is it absorbed and a new one with the same properties emitted? how does it remember its path? And if it bounces back, does its velocity comes to near zero for a small-time before being reflected back in a straight line at same angle. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f8nzv7/eli5_photon_reflection_off_a_mirror/ | {
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"text": [
"The individual wavefunctions corresponding to the photon interacting with each particle in a perfect mirror are in superposition. They only constructively interfere along the path where the angle of in... | [] | [] | [
[],
[],
[]
] | |
2kaoeg | What are these WWII era Japanese men wearing? | I recently purchased a grouping of WWII photos taken by a US soldier during the Battle of Okinawa. This photo was taken (with many others) from a fallen Japanese soldier.
_URL_0_ | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2kaoeg/what_are_these_wwii_era_japanese_men_wearing/ | {
"a_id": [
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"text": [
"They are wearing kimono, a traditional Japanese garment. The kimono itself is the long robe-looking piece of clothing that is secured at the waist by a sash (obi). On top of that, they seem to be wearing haori - a sort of coat commonly worn over ... | [] | [
"http://i.imgur.com/NsTmb2A.jpg"
] | [
[]
] |
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