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 |
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5pagl7 | what happens if a president is elected and they do not have a so to take the first lady/gentleman position? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5pagl7/eli5_what_happens_if_a_president_is_elected_and/ | {
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"There's only one or two cases of a president not having an SO. It's a campaigning thing. People will vote for the family man over the lecherous man. Preside... | [] | [] | [
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13facs | how do google's driverless cars work? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/13facs/eli5_how_do_googles_driverless_cars_work/ | {
"a_id": [
"c73h973"
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"score": [
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"text": [
"A system including cameras, GPS, proximity sensors all work together to drive the car. Pretty much every road in north america is mapped on GPS. The GPS gives the rough information on the route the car should take and what to expect in terms of d... | [] | [] | [
[]
] | ||
4yjn38 | how does up voting photos in reddit effect their visibility in google searches? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4yjn38/eli5_how_does_up_voting_photos_in_reddit_effect/ | {
"a_id": [
"d6ojhqh"
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"score": [
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"text": [
"I believe that every time you upvote an image a link to it is created in your users folder. For example you can see all of my upvotes here:\n_URL_0_\n\nEach upvote generates a new link. When a lot of users upvote an image it creates a lot of back... | [] | [] | [
[
"https://www.reddit.com/user/barbodelli/upvoted/"
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2xo7aq | What nationalities were the Shock Troops of the British Empire during World War I? | From what I've read of the Canadian Expeditionary Force, I know that the British military used the Canadian Corps for Shock Troops.
Were there any other Shock Troops that the British used, and if there were, what nationality were they? If none of them were actually British, why did the British military almost exclusiv... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2xo7aq/what_nationalities_were_the_shock_troops_of_the/ | {
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"text": [
"\"Shock Troops\" was a term liberally used in the First World War. Most notably, the Stosstruppen or Shock troops that the Germans experimented with in 1916, and finally began forming battalions and regiments by 1917, and wh... | [] | [] | [
[],
[]
] | |
4evn5p | How do rocket engines prevent back-flow of ignited fuel? | In other words, how is ignited fuel stopped from flowing up the fuel lines? And also if it did, what would happen?
(Regard bi propellant rockets.) | askscience | https://www.reddit.com/r/askscience/comments/4evn5p/how_do_rocket_engines_prevent_backflow_of_ignited/ | {
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"text": [
"The fuel *can't* burn in the fuel line.... there is no oxidizer in the fuel line.\n\nAs for why a fuel/oxidizer mix can't get back into one of the lines... too much pressure going the other way. Here's... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Liquid-propellant_rocket#Injectors"
],
[],
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] | |
ws3dp | Are hitler and Stalin diagnosed as crazy today? | Hey /r/askhistorians ! Here again for another question.
So as a fellow student studying Hitler's rise to power, and his relations with Stalin, I'd like to ask a simple question.
Basically,my teacher seemed to often attribute specific choices of these two leaders to the "he was crazy" excuse. Don't get me wrong, I do... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/ws3dp/are_hitler_and_stalin_diagnosed_as_crazy_today/ | {
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"text": [
"Hey, cool question. I really like that you asked \"*Are Hitler and Stalin diagnosed as crazy* ***today***\" not \"Where they crazy?\".\n\nHitler is often diagnosed as crazy nowad... | [] | [] | [
[],
[],
[],
[
"http://de.wikipedia.org/wiki/Psychopathographie_Adolf_Hitlers"
]
] | |
1qitg6 | the religion of jehova's witness | I'm surprised this isn't on here already. I would love to know all the basic fundamental beliefs or just what they would tell me if they came to my door. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1qitg6/eli5_the_religion_of_jehovas_witness/ | {
"a_id": [
"cdd7w9p"
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"score": [
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"text": [
"Using reddit search I found:\n\nELI5: Jehovah's Witnesses\n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.reddit.com/r/explainlikeimfive/comments/lee73/eli5_jehovahs_witnesses/"
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6298az | why aren't people in congress who took money from people not forced to abstain from a vote? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6298az/eli5_why_arent_people_in_congress_who_took_money/ | {
"a_id": [
"dfkqrby",
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"score": [
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"text": [
"Because then all I'd have to do to stop something from passing is donate small amounts of money to some people who supported a bill. ",
"It is because the purpose of the legislature is to influenced by people.\n\nYour r... | [] | [] | [
[],
[]
] | ||
155l3i | when you flip your rear-view mirror down in the night time, why do the headlights behind you seem less bright? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/155l3i/eli5_when_you_flip_your_rearview_mirror_down_in/ | {
"a_id": [
"c7jhmfe",
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"score": [
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"text": [
"It's a second mirror that has a less reflective surface. If you take a flashlight to the mirrors at night, you can see where they each reflect to.",
"The mirror isn't flat; the glass is thicker at the top forming a wedg... | [] | [] | [
[],
[]
] | ||
sx5r4 | compression of video, photo and audio. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/sx5r4/eli5_compression_of_video_photo_and_audio/ | {
"a_id": [
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"text": [
"Photo: Instead of recording the exact color of every pixel, either reduce the number of colors used (gif), or make a note that the next however number of pixels are the same color, followed by a bunch of pixels that are a different color, and so ... | [] | [] | [
[]
] | ||
9ptw3s | what does falconry actually involve? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9ptw3s/eli5_what_does_falconry_actually_involve/ | {
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"e84bb7b"
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"Im a falconer. There's kind of a difference between how we take the sport on and how they do it in the arab world. In north america we use trained raptors to hunt \"fur or feather\" meaning either small furry animals or gamebirds and water fowl. ... | [] | [] | [
[]
] | ||
e4dtua | How does a history post-grad student go about finding their thesis topic? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/e4dtua/how_does_a_history_postgrad_student_go_about/ | {
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"text": [
"It's really a case of thinking about what you find interesting, and what will hold your attention for however long you have to write the piece of work. I personally think that's th... | [] | [] | [
[],
[],
[],
[]
] | ||
54fl8c | How did vegetarian cultures start? | In India, there's a large proportion of vegetarians, and I believe this is often attached to religion. How did this start? E.g. was it more ethics towards animals, or fear of tainted meat, or religious purity, or something else?
That's the only example I know of, but if there are/were other similar cultures, I'd l... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/54fl8c/how_did_vegetarian_cultures_start/ | {
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"text": [
"In ancient India, the brahmin (\"priest\") caste engaged in vegetarianism out of religious belief. The killing of animals was associated with bad karma, so brahmins maintained their diets as a sign of karmic purity. It's also important to note t... | [] | [] | [
[]
] | |
28l5l1 | Can I make something float? | I am not really good on this physics thing but I'll try to sum it up.
I think gravity has a 9.8 N strenght right? If I could feel something with, per exemple, a balloon with Helium untill it equals gravity will my balloon float on the middle of the air? | askscience | http://www.reddit.com/r/askscience/comments/28l5l1/can_i_make_something_float/ | {
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"First of all, just to clarify, gravity doesn't have a uniform strength of 9.8 Newtons. The acceleration due to gravity is 9.8 m/s^2, and because F=ma (for applications near the surface of the earth), th... | [] | [] | [
[],
[
"https://www.youtube.com/watch?feature=player_detailpage&v=JDJ-Xy9MgZk#t=51"
],
[]
] | |
2uvye3 | Economic Inequality between Northern and Southern Europe | I tried to look through the FAQ and recent posts, but could find anything on the subject.
What has caused the economic inequality between Northern Europe (UK, France, Germany) and Southern Europe (Spain, Greece, Italy etc)?
Has this economic disparity existed for a long time?
I am wondering about the historical backg... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2uvye3/economic_inequality_between_northern_and_southern/ | {
"a_id": [
"coclo62"
],
"score": [
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"text": [
"It actually has a lot to do with history.\n\nThe most important thing to understand, I think, is the way the Industrial Revolution spread through Europe. As you may have learned, England was the starting point. What made England special? Firstly,... | [] | [] | [
[]
] | |
dtdou1 | Given Elon Musk's recent comments about finally being able to reuse rockets: Why is it so difficult to recover and reuse them? | askscience | https://www.reddit.com/r/askscience/comments/dtdou1/given_elon_musks_recent_comments_about_finally/ | {
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"text": [
"There are lots of ways to do some kind of rocket recovery and thus many reasons not to. I can only talk about a few. \n\nRecovery is the first problem. \n\nBoosters which detach early land in the ocean... | [] | [] | [
[],
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5cctg1 | what has changed culturally/politically that people believed it when they were warned about the hole in the ozone, but not about climate change now? | I am too young to have really understood the turn around with the ozone, but it seems like it would be as abstract to the layman as climate science is now. But yet, the whole world seems to have gotten on board with getting rid of CFCs and reversing the trend. Why is this not happening with climate change awareness? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5cctg1/eli5_what_has_changed_culturallypolitically_that/ | {
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"score": [
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20,
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"text": [
"There's a belief that the Earth can balance itself to sustain environment. I've heard it hundreds of times, th... | [] | [] | [
[],
[],
[],
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[],
[],
[]
] | |
ak2q53 | German Grenades | What was the designer logic behind the German tomahawk grenades? These would be the grandes most commonly seen in WW2 with the wooden handles. Were they supposedly easier to throw or was there some other purpose in their design? I feel like they would have been cumbersome and heavier to carry around. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/ak2q53/german_grenades/ | {
"a_id": [
"ef2ya1k"
],
"score": [
9
],
"text": [
"It's worth noting both sides experimented with a variety of grenade styles and types. You can see some [German](_URL_7_) and [French](_URL_2_) examples. The German \"discus\" design and the French \"hairbrush\" design nare especially interesting.... | [] | [] | [
[
"https://imgur.com/yXXH6FQ",
"https://imgur.com/a/W6OZdOv",
"http://www.passioncompassion1418.com/decouvertes/english_grenades_fr.html",
"https://imgur.com/a/TiuM9Bi",
"https://imgur.com/ZC09FGZ",
"https://imgur.com/a/3uAc7ks",
"https://imgur.com/a/eJyPC6z",
"http://www.passioncomp... | |
emils6 | why do phone cameras seem more zoomed out than eyes when looking at the same thing | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/emils6/eli5_why_do_phone_cameras_seem_more_zoomed_out/ | {
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"text": [
"Because they are taking the whole scene and representing it on a small screen. Then you look at the screen and it looks like a small duplication of the scene. Most camera lenses also capture a smaller field of view than your... | [] | [] | [
[],
[]
] | ||
12veh7 | why do international sporting organizations have french names? | I have always wondered why the international sporting organizations for soccer (FIFA), basketball (FIBA) and the Olympics have french names or use French predominately within their respective organizations. Any thoughts? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/12veh7/eli5_why_do_international_sporting_organizations/ | {
"a_id": [
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"score": [
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"text": [
"Historical reasons. The modern Olympics began in the late 1800's, and FIFA was founded in 1904. While England and Germany were major players at the time, France had been a dominant cultural and military force in Europe for the previous few centur... | [] | [] | [
[]
] | |
2gcsty | when people gain weight rapidly, do they grow new hairs to cover all the skin, or do they have the same amount of hairs spaced farther apart? | For example on legs and arms... and then if the person lost the weight, would they be harrier afterwards because they still had all of the new hairs? If your body can grow new hairs because you gained weight, why can't it grow new hairs when you bald? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gcsty/eli5_when_people_gain_weight_rapidly_do_they_grow/ | {
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hl7n7 | How loud would a sound have to be to be heard around the world? | And as a follow up, besides destroying billions of eardrums, what effects would the sound have on the world? | askscience | http://www.reddit.com/r/askscience/comments/hl7n7/how_loud_would_a_sound_have_to_be_to_be_heard/ | {
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"text": [
"Can you clarify this? I'm sure others will have better responses, but do you mean that the transmitter of this sound wave is entirel... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Tsar_Bomba"
],
[
"http://en.wikipedia.org/wiki/Krakatoa"
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[],
[],
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5toebp | the economics of the cost of private education. | How can a school survive when it charges $50k tuition but says the "real price" to educate a student is ~$90k? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5toebp/eli5_the_economics_of_the_cost_of_private/ | {
"a_id": [
"ddnvkwq"
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"score": [
2
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"text": [
"What school is claiming that? For $90k you could get every student their own private teacher, a computer, and all the supplies they need and still probably have $10k left over. "
]
} | [] | [] | [
[]
] | |
apjzep | how come noise cancelling headphones don't increase hearing loss when there is actually more sound being produced around your ears? | I understand that passive noise cancelling headphones are good for your ears because they have and insulant that keeps some of the sound from outside sources from reaching your ear.
What I don't understand is the active noise cancelling technology that records the audio on the outside of the headphones and produces sou... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/apjzep/eli5_how_come_noise_cancelling_headphones_dont/ | {
"a_id": [
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"text": [
"That's the whole point of the opposite amplitude, the two waves cancel each other out and the eardrum doesn't move at all as a result. So the additional sounds actually result in less movement of the eardrums, and thus are easier on your ears. Pe... | [] | [] | [
[]
] | |
dgfxp9 | Is there a maximum possible magnetic flux density? | askscience | https://www.reddit.com/r/askscience/comments/dgfxp9/is_there_a_maximum_possible_magnetic_flux_density/ | {
"a_id": [
"f3bdw8k"
],
"score": [
7
],
"text": [
"There is the [Schwinger limit](_URL_0_): Above 4 billion T things get strange.\n\nAnd then there is the Planck magnetic inductance, 2\\*10^53 T. That's at least the maximum where our known laws of physics have a chance to work."
]
} | [] | [] | [
[
"https://en.wikipedia.org/wiki/Schwinger_limit"
]
] | ||
1iruk7 | Will listening to a recording of information while sleeping every night lead to me memorizing that information? Can the brain absorb information in a noticeable way during sleep? | askscience | http://www.reddit.com/r/askscience/comments/1iruk7/will_listening_to_a_recording_of_information/ | {
"a_id": [
"cb7ge43"
],
"score": [
7
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"text": [
"_URL_0_\n\n > Since the electroencephalography studies by Charles W. Simon and William H. Emmons in 1956, **learning by sleep has not been taken seriously**. The researchers concluded that learning during sleep was \"impractical and probably im... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Sleep-learning"
]
] | ||
5knfro | are more celebrities dying this year than average? or is it just observe bias or something? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5knfro/eli5_are_more_celebrities_dying_this_year_than/ | {
"a_id": [
"dbp79zt"
],
"score": [
2
],
"text": [
"Statistically more celebrities are probably not dying more than in previous years, but there may be a connection based in how popular / unique these celebrities were."
]
} | [] | [] | [
[]
] | ||
jiklb | where do/did words come from? | Having just eaten breakfast, my 5 y/o niece is wondering who the heck came up with the word "banana," how it happened, how the rest of the world found out about the word, and this is how it works for all words.
Then she repeated the word "banana" until the word lost all meaning.
Thanks reddit! haha :) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jiklb/eli5_where_dodid_words_come_from/ | {
"a_id": [
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9
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"text": [
"There are a *lot* of answers to that. Here are some:\n\n* Some people believe the first words were caveman grunts or warning calls. It's easy to see how \"gaaah!\" for \"there's a tiger coming, let's run!\" could become a wo... | [] | [] | [
[],
[]
] | |
7civ6o | To what degree did the Allies and the USSR cooperate in WW2? | I've been reading about the effects of the US and other nations supplying European countries and the USSR to defeat the Axis powers. They also shared SOME information on logistics.
Question: did cooperation between the Allies and the soviets make a difference in the outcome of the war? Would it have been worse for the... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7civ6o/to_what_degree_did_the_allies_and_the_ussr/ | {
"a_id": [
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"score": [
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"text": [
"They absolutely collaborated during the war, and while it's hard to say that they would have lost or exactly how the war would have been different, it would nevertheless have made the fighting substantially more difficult. I would say it's a misn... | [] | [
"http://www.historynet.com/did-russia-really-go-it-alone-how-lend-lease-helped-the-soviets-defeat-the-germans.htm"
] | [
[]
] | |
6rajcm | How are we so sure about the fate of different types of stars when the Universe is not yet old enough for us to witness the death of certain stars? | For instance, according to [this Kurzgesagt video](_URL_0_), white dwarves have a lifespan of billions of billions of years.
But with the Universe being only a few billion years old, this would only be a split second in the life of a white dwarf. The Universe is not yet old enough for us to witness the death of any wh... | askscience | https://www.reddit.com/r/askscience/comments/6rajcm/how_are_we_so_sure_about_the_fate_of_different/ | {
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"text": [
"We're not absolutely certain, you're right. Observations would help us be more accurate, and there's a lot of detail we don't have, even hypothetically.\n\nHowever, all of our obs... | [] | [
"https://youtu.be/qsN1LglrX9s"
] | [
[],
[],
[],
[]
] | |
b6cadm | the difference between the degrees and the warm/cold settings on a split system air-conditioner. | Long time lurker, first time poster to ELI5. Apologies if I haven't titled this correctly.
& #x200B;
I am working in a small office today and we have set the air-conditioner to warm and 22C. But my co-worker and I questioned what is the difference between 22C warm and 22C cold. We just thought 22C is just 22C. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b6cadm/eli5_the_difference_between_the_degrees_and_the/ | {
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7,
2
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"text": [
"Warm=keeping room temp above set temp\n\nCool=keeping room temp below set temp\n\nThe temp you set the thermostat to isn't necessarily going to be the room temp, it's just the temp that activates the system. ",
"22C cool... | [] | [] | [
[],
[]
] | |
1cgdpq | Why are airships/blimps/zeppelins not used for transporting freight? | What sort of efficiency do they have? Do they leak (helium containment is difficult)? | askscience | http://www.reddit.com/r/askscience/comments/1cgdpq/why_are_airshipsblimpszeppelins_not_used_for/ | {
"a_id": [
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"score": [
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3
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"text": [
"Mostly for economic reasons. The leakage is not a major issue, as there are commerically operated airships right now. We used to fill these airships with hydrogen, but that went awfully wrong. Helium does not provide the sam... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Cargolifter_AG"
],
[
"http://www.popularmechanics.com/technology/aviation/airships/3764027?click=main_sr"
]
] | |
1x3sps | What's happening in batteries when they seemingly run out of charge but hours later they have "residual charge" enough to power on again? | The rechargeable battery to one of my devices had died last night, couldn't power it on at all. Woke up this morning, tried to turn it on and it flickered to life briefly. What's up with that? | askscience | http://www.reddit.com/r/askscience/comments/1x3sps/whats_happening_in_batteries_when_they_seemingly/ | {
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"The \"self-recharging\" features of batteries is most noticeable in a car battery. In some cases you can crank the engine until the battery seems totally dead, then come back an hour later and crank it again. The higher the drain on the battery (... | [] | [] | [
[]
] | |
3mz541 | After splitting a magnet in half you cannot reconnect the two pieces back together at the original break point, why? | askscience | https://www.reddit.com/r/askscience/comments/3mz541/after_splitting_a_magnet_in_half_you_cannot/ | {
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"For most metals, it's because an oxidation layer forms once broken that prevents the metal from being reconstituted. There are ways around that, however, that involve stripping off that layer, applying a vacuum, and applyin... | [] | [] | [
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"https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/VFPt_cylindrical_magnet_thumb.svg/1024px-VFPt_cylindrical_magnet_thumb.svg.png"
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861cqc | why do pigments look like another colour when they’re a powder? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/861cqc/eli5_why_do_pigments_look_like_another_colour/ | {
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"Well, I can't say I've noticed what you describe, but the explanation would be the following:\n\nLet's start with electromagnetic radiation: Electromagnetic radiation consists of electromagnetic waves, which are synchronized oscillations of elect... | [] | [] | [
[
"https://tinyurl.com/ycbruzg5"
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2xovey | when the supreme court rules on gay marriage, what will happen to the lower court rulings, and the states, if the supreme court decides that states can constitutionally ban gay marriages? | I'm curious at what could happen if SCOTUS in June by some surprising 5-4 vote up hold bans on gay marriage. Would this effectively reinstate bans in every state where District and Circuit judges have ruled in favor of gay marriage? And if so, will marriages that have taken place in those jurisdictions still count? An... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2xovey/eli5when_the_supreme_court_rules_on_gay_marriage/ | {
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"text": [
"In the past when a gay marriage ban has been lifted then applied again those who legally married still were married. It's possible this would happen nationally if the SCOTUS ruled that way. But further marriages would stil... | [] | [] | [
[],
[]
] | |
49c375 | why is mp3's still ripped in 128kbp/s and not simply in either 320kbp/s or straight flac? | I have never understood this. Maybe it doesn't matter if you listen on some shit speakers like beats by dr dre or such but theres really no excuse anymore. Theres so much hd space available for cheap that the filesize really can't be an excuse anymore either. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/49c375/eli5_why_is_mp3s_still_ripped_in_128kbps_and_not/ | {
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"Most people aren't audiophile nerds and 128kb/s is perfectly fine for listening with the cheap earbuds that 99% of the population uses.... | [] | [] | [
[],
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[],
[],
[],
[
"http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality"
]
] | |
6lajev | how does facebook (and other social media sites) compile a creepily accurate suggested friends list even when you are a new user and have given the site minimal personal information? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6lajev/eli5_how_does_facebook_and_other_social_media/ | {
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"Using a mixture of IP addresses and cookies for identification purposes, throughout various websites and ads they keep track of and build a profile on you.... | [] | [] | [
[],
[],
[
"https://spideroak.com/articles/facebook-shadow-profiles-a-profile-of-you-that-you-never-created"
],
[],
[]
] | ||
khqen | why we use rms to express ac voltages | I understand DC voltages pretty easily. AFAIK "120v AC" means that circuit pushes out 120 volts just like 12v DC pushes 12 volts. But where and how does RMS factor into all of this? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/khqen/eli5_why_we_use_rms_to_express_ac_voltages/ | {
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[],
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"http://wiki.4hv.org/images/a/a8/SineWave.png",
"http://en.wikipedia.org/wiki/Root_mean_square"
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1qvipm | This may be a dumb question, but if losing weight requires simply eating less calories than your body burns, what are the biggest differences from eating healthy or poorly? | If I understand correctly, if your body burned, say, 2500 calories a day, and you ate 2000 calories of fast food, you'd lose weight. If you ate 3000 calories of extremely healthy food, you'd gain weight. Obviously eating healthier food is better, but why exactly? | askscience | http://www.reddit.com/r/askscience/comments/1qvipm/this_may_be_a_dumb_question_but_if_losing_weight/ | {
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"text": [
"This is complicated because your question isn't entirely clear. If by \"health\", you mean weight gain/loss, it is very hard to overeat truly healthy food. have you ever tried eating 3000 calories of me... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Atwater_system#Theoretical_and_practical_considerations_relating_to_the_calculation_of_energy_values"
],
[]
] | |
7fjm2c | why does the us federal reserve want to raise intrest rates if unemployment falls below 4%? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7fjm2c/eli5_why_does_the_us_federal_reserve_want_to/ | {
"a_id": [
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"score": [
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4
],
"text": [
"The Fed has a dual-mandate: keep unemployment low and keep inflation low. Generally economists think that the US is at full employment if the unemployment rate is around 4%. This is because you figure that at any point in t... | [] | [] | [
[],
[]
] | ||
5f6xej | how are not-for-profits/nonprofits allowed to pay their workers? isn't salary profit? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5f6xej/eli5_how_are_notforprofitsnonprofits_allowed_to/ | {
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"text": [
"Profit is made after all of your overheads and expenses have been paid, so wages/bills/insurance etc have to be taken cared for first. Anything else that is left is profit :)",
... | [] | [] | [
[],
[],
[],
[]
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2kcts8 | why do american's take halloween and costumes so serious? why is it such an important event in the year? | UK here. Can someone explain why Halloween holds such significance with Americans? Why they try so hard with costumes?
I fully understand why you would dress up in cool costumes as a kid trick or treating, but even adults go to great lengths to have the best costume at (for a non-American) a completely forgettable da... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2kcts8/eli5_why_do_americans_take_halloween_and_costumes/ | {
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"The... | [] | [] | [
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1uata8 | what is happening when i can tell someone is looking at me from across a busy room? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1uata8/eli5_what_is_happening_when_i_can_tell_someone_is/ | {
"a_id": [
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"score": [
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2,
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"text": [
"was just speaking to a friend about this, also how is it that the reaction to this causes my eyes know how and where to look precisely into the other persons eyes once you know there looking at you in ... | [] | [] | [
[],
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b1212j | Given that uranium 235 has a half life of 703.8 million years, now long would all nuclear weapons have to be left alone before they would be considered inert? | askscience | https://www.reddit.com/r/askscience/comments/b1212j/given_that_uranium_235_has_a_half_life_of_7038/ | {
"a_id": [
"eikz7ns"
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"text": [
"The circuitry, chemical explosives, and probably even the structural integrity of the weapons would likely fail before the U-235 decayed to the point where it was no longer a viable weapon. It should be noted there are other long-term effects, es... | [] | [] | [
[]
] | ||
446mww | why do gas stoves start at the highest heat setting instead of the lowest? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/446mww/eli5_why_do_gas_stoves_start_at_the_highest_heat/ | {
"a_id": [
"cznu4er"
],
"score": [
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],
"text": [
"For lighting. The gas comes out at maximum so it will reach the pilot flame and ignite right away.\n\n"
]
} | [] | [] | [
[]
] | ||
1ojad6 | how does land/property pass from public too private ownership? | I'm curious about how land originally passes from being owned by the state too being owned by individuals, In what circumstances is it allowed? Does it cost as much as buying from the market? Why doesn't the government sell more/people buy more? How are settlements formed when no-one private entity owns the land? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ojad6/eli5how_does_landproperty_pass_from_public_too/ | {
"a_id": [
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"text": [
"Unless the public body is prohibited from selling its land, it can sell it whenever it wants to. Generally governments try to stick to the market rate, unless there's an ulterior motive (like land redistribution in Africa, in which case it might ... | [] | [] | [
[]
] | |
2req40 | if we can do our own taxes online, why can't we register a new car, transfer a tag to a new vehicle online? or any other dmv task for that matter?? (besides issuing licenses...) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2req40/eli5_if_we_can_do_our_own_taxes_online_why_cant/ | {
"a_id": [
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"score": [
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3,
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"text": [
"Because the DMV didn't build a web portal and the IRS did. If you want to know WHY the DMV didn't build one....well that's a different question altogether.",
"In some states you can do many things o... | [] | [] | [
[],
[],
[]
] | ||
21xuwd | why it's legal for fox news to make stuff up and sell it as news? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/21xuwd/eli5_why_its_legal_for_fox_news_to_make_stuff_up/ | {
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"text": [
"The step after regulating \"integrity\" is regulating free speech -- so it's a slippery slope.\n\nAnd in a sense, there is regulation. Rather was canned for what he did and the dam... | [] | [] | [
[],
[],
[],
[
"http://mediamatters.org/blog/2014/03/31/dishonest-fox-charts-obamacare-enrollment-editi/198679"
]
] | ||
c4ihfp | what is the sun's spectrum and how does it work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c4ihfp/eli5_what_is_the_suns_spectrum_and_how_does_it/ | {
"a_id": [
"erwt54k"
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"score": [
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"text": [
"Heated matter emits radiation. Most commonly as infrared radiation which we can't see but can feel on our skin. When the heat exceeds a certain value, it starts glowing red. Keep heating up and it becomes yellow, then white, which means that all ... | [] | [] | [
[]
] | ||
53hj8n | Anthem Protests and Francis Scott Key's Third Verse. Is it actually racist? | Recently, Colin Kaepernick has come under fire for protesting the playing of "The Star Spangled Banner" at football games. One recent talking point in the controversy has claimed that the original third verse of Key's anthem refers to free blacks and slaves who fought for the British Army in America. The verse, in full... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/53hj8n/anthem_protests_and_francis_scott_keys_third/ | {
"a_id": [
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"score": [
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"text": [
" > Slave almost certainly refers to conscripts, as the British Army fielded thousands of them in America during the War of 1812.\n\nThey also fielded thousands of freed slaves, who the Americans demanded be returned to their \"owners\" after the... | [] | [] | [
[]
] | |
2ch2f8 | why is katsaridaphobia (fear of cockroaches) so common? | First of all-yes, I did a search and the [last post](_URL_0_) was not helpful.
I understand the common fear of snakes, spiders, tigers-all are dangerous and it's instinct to fear them. I also understand that there are really uncommon fears like rabbits or birds that don't need an explanation, those people are the exce... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ch2f8/eli5_why_is_katsaridaphobia_fear_of_cockroaches/ | {
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"text": [
"Cockroaches are generally considered a sign of uncleanliness, even squalor. That's not strictly true, but it's a connotation that has remained. They also carry diseases. Many things like this aren't ev... | [] | [
"http://www.reddit.com/r/explainlikeimfive/comments/21y7qa/eli5_why_am_i_deathly_afraid_of_cockroaches_while/"
] | [
[],
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[]
] | |
9e5ybd | what's preventing me from randomly guessing someone else's software product key, especially for physical copies of stuff? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9e5ybd/eli5_whats_preventing_me_from_randomly_guessing/ | {
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"text": [
"You seem to understand the concept of brute force. I think the reason it's not more common is just the amount of work that entails for r... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
2iqzlf | Is it in the nature of gravity to cluster things even in the largest scale? | recently I read that not only stars are clustered in galaxies, but also galaxies are clustered in galaxy-clusters. This made me think - is it in the 'nature' of gravity to make things arranged in clusters? Thus, just like there are cluster of galaxies, the galaxy-clusters themselves are arranged in clusters of galaxy-c... | askscience | http://www.reddit.com/r/askscience/comments/2iqzlf/is_it_in_the_nature_of_gravity_to_cluster_things/ | {
"a_id": [
"cl4r9er"
],
"score": [
4
],
"text": [
" > Is it in the nature of gravity to cluster things even in the largest scale? \n\nThe word *even* is inappropriate here, because the force of gravity almost only shapes the universe on large scales. It is to weak to have an relevant effect on ... | [] | [] | [
[]
] | |
f6m1yo | how did someone as insane as nero become emperor? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f6m1yo/eli5_how_did_someone_as_insane_as_nero_become/ | {
"a_id": [
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"score": [
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"text": [
"Nero was raised in a Roman imperial governance tutoring system after being adopted by Claudius. \n\nKeep in mind that when looking at the historic past, behaviour considered loathsome now was more common place then. Additionally, the tenets of hu... | [] | [] | [
[]
] | ||
3yup9h | Why Were Chess Players in the 60s-70s Treated like Celebrities and Not in Todays Society? | It seems every movie i've seen regarding Bobby Fischer always showed him as a celebrity with Night Show appearances and News broadcasts, but today we hear nothing of the leading chess players. Why? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3yup9h/why_were_chess_players_in_the_60s70s_treated_like/ | {
"a_id": [
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"text": [
"Magnus Carlson is treated like a celebrity, even in the United States he make appearances on talk shows and news programs. In other countries he is even more well known. He makes well over a million dollars a year and has sponsors. \n\nBut the r... | [] | [] | [
[]
] | |
2xngf6 | if scientists can tell that their best atomic clock loses 1s every 16 million year, why not use what ever they're using to measure the clock's accuracy as a clock itself? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2xngf6/eli5_if_scientists_can_tell_that_their_best/ | {
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"text": [
"They're not measuring the atomic clock, they're using the science behind it to judge it's statistical likelihood of accuracy. They're measuring it's \"margin or error.\"",
"Also what can happen is ... | [] | [] | [
[],
[],
[
"https://www.reddit.com/r/explainlikeimfive/comments/283iid/eli5_how_did_people_first_measure_the_accuracy_of/ci76w1t"
]
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blhqcn | Why does pressure relax tensed muscle? | askscience | https://www.reddit.com/r/askscience/comments/blhqcn/why_does_pressure_relax_tensed_muscle/ | {
"a_id": [
"enexowk"
],
"score": [
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"text": [
"Hello! I just wanted to let you know that I don’t have an answer, but that I did just read several reviews to see if there was an answer, and that surprisingly it’s still unknown how (and if) massages work on tensed muscles. This British Medical ... | [] | [] | [
[
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1117024/"
]
] | ||
2rhw56 | What primary sources do we have for the history of England prior to the Norman invasion? | I'm newly fascinated by the tumultuous period between the Anglo-Saxon invasion/settlement and the Battle of Hastings. What remains by way of primary sources from that time? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2rhw56/what_primary_sources_do_we_have_for_the_history/ | {
"a_id": [
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"score": [
3,
2
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"text": [
"You'd probably like the [Anglo-Saxon chronicle](_URL_1_), which contains entries from the 9th-11th Century.\n\nThere's some other British annals as well - there's a [short list](_URL_0_) on Wikipedia (mods, I hope this is ok... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Annals#Medieval",
"http://www.gutenberg.org/ebooks/657"
],
[]
] | |
4ybtrq | Is oxygen distributed uniformly in a closed system? | I'm struggling to think of a real-world scenario apart from a stricken submarine with a finite supply of breathable air, but would the levels of oxygen in the atmosphere fall uniformly in all compartments (if all internal hatches were open) or would there be pockets of *more breathable* air in areas that were unoccupie... | askscience | https://www.reddit.com/r/askscience/comments/4ybtrq/is_oxygen_distributed_uniformly_in_a_closed_system/ | {
"a_id": [
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2
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"text": [
"It would ultimately diffuse uniformly, but if you have people respirating the whole time, then it would depend on the volume of air, the total rate of oxygen consumption, how the people are distributed, and whether diffusion... | [] | [] | [
[],
[]
] | |
8v3u1w | The usual test for a witch was to drown them, if they floated they were a witch if not they were dead. What was the origin of this test and were there ever any cases in which the “witch” actually floated? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8v3u1w/the_usual_test_for_a_witch_was_to_drown_them_if/ | {
"a_id": [
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"text": [
"There is always more to write, but in the meantime you might want to check out this answer I wrote about Trials By Ordeal that discusses the \"trial by water\".\n\n_URL_0_"
]
} | [] | [] | [
[
"https://reddit.app.link/KiQ70SNcbO"
]
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6i0vjx | What was life like for a university student in the 1650s? | Not only in terms of education, but how they spent their free time compared to univerity and college students today.
Edit: In Western Europe, preferably as is the customary focus of world history. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6i0vjx/what_was_life_like_for_a_university_student_in/ | {
"a_id": [
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17
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"text": [
"I don't have an answer but a clarifying question... What country or region are you asking about?"
]
} | [] | [] | [
[]
] | |
jrap5 | why food cools off faster in my 98.6 degree mouth than at room temperature. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jrap5/eli5_why_food_cools_off_faster_in_my_986_degree/ | {
"a_id": [
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5,
2,
5,
2
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"text": [
"because air does not conduct heat as fast as water (or your saliva) does. ",
"Both the air and your saliva are made of tiny parts called molecules. Heat is actually the back-a... | [] | [] | [
[],
[],
[],
[]
] | ||
lxik2 | what digital technology is and how it differs from whatever we used (analog?) before it | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/lxik2/eli5_what_digital_technology_is_and_how_it/ | {
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3,
3,
3,
3
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"text": [
"Both technologies use electronic circuits, but digital ones have 'digital' data running through it. \n\nA signal running through a wire can be high or low. When it's high, we say t... | [] | [] | [
[],
[],
[],
[]
] | ||
7oc5lx | Why do some vaccines use live viruses over dead (inactive) ones? | askscience | https://www.reddit.com/r/askscience/comments/7oc5lx/why_do_some_vaccines_use_live_viruses_over_dead/ | {
"a_id": [
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"text": [
"This might not be the proper answer, but from what I understand is that if it has a live virus, that virus is generally in a weakened state. With a weakened virus, the virus is still able to do stuff, b... | [] | [] | [
[],
[],
[]
] | ||
26ohjm | why doesn't society like loners? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26ohjm/eli5_why_doesnt_society_like_loners/ | {
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"chsyp9n",
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"score": [
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"text": [
"This is because the people that talk in public are extroverts. An introvert isn't as likely to take a public stance on any of this, so we have less of a defense.",
"I'd say it ... | [] | [] | [
[],
[],
[],
[]
] | ||
9zgs5e | why can’t people sue internet and financial companies for data breaches and why aren’t people behind bars? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9zgs5e/eli5_why_cant_people_sue_internet_and_financial/ | {
"a_id": [
"ea90u74"
],
"score": [
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],
"text": [
"Your premise is false. People can, and do, sue companies for data breaches. In fact many companies buy special insurance just for this issue."
]
} | [] | [] | [
[]
] | ||
3k4o9i | How did the Holocaust affect the field of psychology and philosophy? | I'm thinking primarily of Western thinking, but as it was such a global tragedy, maybe it also affected non-Western thinking as well? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3k4o9i/how_did_the_holocaust_affect_the_field_of/ | {
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"text": [
"The persecution of Jews in Germany and the Holocaust had several distinct effects upon psychology: a major geographical shift in the epicenter of the scientific psychology world, an influx of Jewish psychologists into Ameri... | [] | [] | [
[],
[]
] | |
2se078 | Did the British really pretend that carrots derived night vision were the source of their radar-derived intelligence? | If so, was the ruse effective? Did the Axis powers have any similar myths about their technologies? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2se078/did_the_british_really_pretend_that_carrots/ | {
"a_id": [
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"text": [
"Yes and no; it wasn't exactly a planned deception, but carrots were mentioned in publicity around John \"Cat's Eyes\" Cunningham, a night fighter pilot, in early 1941. \n\nThe Luftwaffe's switch to night bombing in September 1940 had caused ser... | [] | [] | [
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"http://www.iwm.org.uk/collections/item/object/205229851",
"http://www.carrotmuseum.co.uk/",
"http://www.carrotmuseum.co.uk/history4.html"
]
] | |
4gs513 | why does boiling point of noble gases change as you go down the group? | askscience | https://www.reddit.com/r/askscience/comments/4gs513/why_does_boiling_point_of_noble_gases_change_as/ | {
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"text": [
"All atoms, even noble gases like Neon, Argon, etc., experience a type of attractive interaction amongst themselves called \"dispersion forces.\" As a useful oversimplification, the magnitude of this attractive force depends on the number of elect... | [] | [] | [
[]
] | ||
2a0sl5 | why is calling obama a socialist considered an insult? what's so wrong about that type of government anyways? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2a0sl5/eli5_why_is_calling_obama_a_socialist_considered/ | {
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"Because \"socialist\" is a loaded term in American politics, as ill... | [] | [] | [
[],
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a01chp | How did stories of elves, mates, dwarves, etc. come about throughout the world? Is there any proof that they may have existed at one time? | I’m mainly curious of how the tales of the medieval time came about in different parts of the world. From what I have seen, many countries have their own versions of elves, mages, dwarves, dragons, magic and I’m wondering how it spread. I’m curious if there is any evidence that they might have existed in the past or if... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a01chp/how_did_stories_of_elves_mates_dwarves_etc_come/ | {
"a_id": [
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"score": [
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"text": [
"Belief in the supernatural is international. Your question touches on several topics, each of which have generated many books, but it is possible to take this apart carefully and attempt to present a few concise answers.\n\nAlthough many folk st... | [] | [] | [
[]
] | |
1xj0z1 | what is the onion magazine? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1xj0z1/eli5_what_is_the_onion_magazine/ | {
"a_id": [
"cfbr5r2"
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"score": [
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"text": [
"The Onion is a humor and parody newspaper that makes fun of political, social and economic events in the world through parody and exaggeration. "
]
} | [] | [] | [
[]
] | ||
6jc1qa | so i bought 'new' listerine with no alcohol. what's left in it that kills germs? do i need the alcohol? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6jc1qa/eli5_so_i_bought_new_listerine_with_no_alcohol/ | {
"a_id": [
"djd4maq"
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"text": [
"Alcohol isn't actually the ingredient used to kill mouth germs, its primary purpose is to keep the actual active ingredients in solution. Alcohol free Listerine, according to their site, uses essential oils with antibacterial and anti-fungal prop... | [] | [] | [
[]
] | ||
dmyn5t | How good is the sense of smell in insects such as flies? | askscience | https://www.reddit.com/r/askscience/comments/dmyn5t/how_good_is_the_sense_of_smell_in_insects_such_as/ | {
"a_id": [
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"text": [
"Well, they don't have noses or olfactory organs, just chemoreceptors on their antennae. How well they detect airborn compounds depends on the type of insect, and the specificity with which they detect certain molecules but potentially not others.... | [] | [] | [
[]
] | ||
13qo6b | grover norquist is just some guy. why do politicians behave as if a pledge to him is sacred? | One would think that their allegiance would be to their country, not some random guy. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/13qo6b/grover_norquist_is_just_some_guy_why_do/ | {
"a_id": [
"c769t0d"
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"score": [
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"text": [
"Norquist is an incredibly influential \"just some guy,\" and his tax pledge is technically a pledge to the *voters* not to raise total taxes, not to Grover."
]
} | [] | [] | [
[]
] | |
6xgixf | why was cavalry so effective against infantry without spears? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6xgixf/eli5_why_was_cavalry_so_effective_against/ | {
"a_id": [
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"text": [
"I think this is pretty self a explanatory, but I'll do my best. As far as I know, earlier armies were focused around phalanxes or turtle formations, think Greeks or romans, pretty much meaning they'd make walls out of livin... | [] | [] | [
[],
[
"https://upload.wikimedia.org/wikipedia/commons/4/4a/Ancient_Sasanid_Cataphract_Uther_Oxford_2003_06_2%281%29.jpg"
]
] | ||
6f3wvd | what does it mean for an actor to be executive producer on a tv show? | What kind of direction do they give? How does this affect the production? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6f3wvd/eli5_what_does_it_mean_for_an_actor_to_be/ | {
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"text": [
"I work in the film industry and am an 'executive producer' on smaller productions. Simply that means I work with the client stakeholder to hire any and all staff (either directly or indirectly) for a... | [] | [] | [
[
"https://en.m.wikipedia.org/wiki/Film_crew"
],
[],
[]
] | |
22a9sb | In feudal times did the nobility of europe have a distinct ethnicity that seperated them from the rest of the population? | Because the nobility of europe would mix with the nobility of all over europe did they have ethnic features that were generraly different from the rest of the country's population? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/22a9sb/in_feudal_times_did_the_nobility_of_europe_have_a/ | {
"a_id": [
"cgl1k0k"
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"score": [
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],
"text": [
"In some instances there could be. For instance; after the Normans invaded England, the nobility was Nordic (Norman) whereas most of the rest of the population was not. "
]
} | [] | [] | [
[]
] | |
11q5f8 | Is there a "genetic peak"of attractiveness in humans? | askscience | http://www.reddit.com/r/askscience/comments/11q5f8/is_there_a_genetic_peakof_attractiveness_in_humans/ | {
"a_id": [
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"text": [
"There is no molecular definition of attractiveness, so I'm not sure what kind of answer you're looking for here.",
"I don't think you'll find a real scientific answer to this. I might be able to give you something that m... | [] | [] | [
[],
[
"http://i.imgur.com/ZzGrU.jpg"
]
] | ||
9gwxcj | why are we certain there wasn't a technological civilization before humans here on earth? | It took only some 10000 years from being cavemen to going to space. It is a tiny interval in evоlutiоnal and geological scale. How can we be certain that say 30000 or 50000 years ago there wasn't another technological civilization here on earth? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9gwxcj/eli5_why_are_we_certain_there_wasnt_a/ | {
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"text": [
"We can't. Just like we can't be certain the universe wasn't created by an invisible purple teapot orbiting Jupiter. \n\nWe *can* be certain they didn't use large amounts of plasti... | [] | [] | [
[],
[],
[],
[]
] | |
64786i | What do historians think of Benedict Anderson's Imagined Communities? | I am a geography major specialising in Southeast Asia, and was quite drawn to Anderson's "last wave" theorisation for the development of Southeast Asian nation states. Within my university which specialises in Southeast Asia, Imagined Communities is the point from which any understanding of nationalism or political geo... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/64786i/what_do_historians_think_of_benedict_andersons/ | {
"a_id": [
"dfzwey1"
],
"score": [
2
],
"text": [
"Hi there -- this is a question that's come up here a few times before. Not discouraging any further discussion on it, but these older threads may be of interest to you: \n\n_URL_0_\n\n_URL_1_\n\n_URL_2_\n\n_URL_3_"
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/5noyoq/how_can_i_explain_the_constructed_nature_of/",
"https://www.reddit.com/r/AskHistorians/comments/4nw1xa/what_do_people_mean_when_they_say_that/",
"https://www.reddit.com/r/AskHistorians/comments/1kohp2/why_is_nationalism_considered_a_modern_concep... | |
5b289m | gradient descent algorithm | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5b289m/eli5_gradient_descent_algorithm/ | {
"a_id": [
"d9l7fgm",
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2
],
"text": [
"Imagine you're stranded in a mountainous area, and you're blindfolded. \nYou'll be rescued if you reach the lowest point in a valley. \nYour only knowledge of your immediate surroundings comes from placing your foot one step... | [] | [] | [
[],
[]
] | ||
6dfh7c | Who lived in Britain before the Britons? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6dfh7c/who_lived_in_britain_before_the_britons/ | {
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3,
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"text": [
"Well, Britain has seen activity from Palaeolithic times and you can see an example of the continuity at work here in Norman Davies' *The Isles*, which speaks of continuity in DNA ... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Scythians#Descent_claims"
],
[
"http://www.historyfiles.co.uk/FeaturesEurope/Barbarian_Map52BC_max.htm",
"http://www.historyfiles.co.uk/images/Europe/Barbarians/Map52BC_Gaul01_max.jpg"
],
[]
] | |
2epd0f | If photons are massless, could an infinite amount of them fit into an infinitely small space? | askscience | http://www.reddit.com/r/askscience/comments/2epd0f/if_photons_are_massless_could_an_infinite_amount/ | {
"a_id": [
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"score": [
70,
21,
7,
423,
2,
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"text": [
"Someone correct me if I'm wrong. But doesn't that Pauli Exclusion Principle say that, in fact, you could fit as many photons into as... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Fabry%E2%80%93P%C3%A9rot_interferometer",
"http://tesla.desy.de/new_pages/TDR_CD/PartII/chapter02/references/Bousson.pdf",
"https://en.wikipedia.org/wiki/Radiation_pressure"
],
[
"http://www.nature.com/nature/journal/v468/n7323/full/nature09567.html"
... | ||
2h87ob | why did the us government have no trouble prosecuting microsoft under antitrust law but doesn't consider the comcast/twc merger to be a similar antitrust violation? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2h87ob/eli5_why_did_the_us_government_have_no_trouble/ | {
"a_id": [
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"ckqhgst",
"ckqhj89",
"ckqitjq",
"c... | [] | [] | [
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"http://www.newsmax.com/Newsfront/Google-conservatives-donating-GOP/2014/01/23/id/548771/"
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[],
[],
[],
[],
[],
[],
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"http://influenceexplorer.com/organization/microsoft-corp/f1244474fad44ad9a3a57859b4a709b1"
],
[],
[],
[],
... | ||
66kr94 | - recently scientists observed negative mass. what is the significance of this? is this anti-matter? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/66kr94/eli5_recently_scientists_observed_negative_mass/ | {
"a_id": [
"dgj81yk",
"dgj83sl"
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"score": [
7,
3
],
"text": [
"No, it's regular old matter, with regular old positive mass. What they did, was through difficult techniques, induce the bulk of the material to behave *as though it has* negative mass. It does not, however. Additionally, an... | [] | [] | [
[],
[]
] | ||
5zgszh | after a snow storm, why does the sky emanate a pink/gray hue throughout the entire night? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5zgszh/eli5_after_a_snow_storm_why_does_the_sky_emanate/ | {
"a_id": [
"dey2pbj"
],
"score": [
2
],
"text": [
"In dry conditions, the light from sodium vapor street lamps is mostly absorbed by the dark pavement or soil/grass.\n\nWhen the ground is snow-covered, much of that light is reflected upward, where it illuminates the cloud cover or even the water ... | [] | [] | [
[]
] | ||
2rn1ec | What percentage, roughly, of settlers in what is now the US prior to the War of Independence were indentured servants? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2rn1ec/what_percentage_roughly_of_settlers_in_what_is/ | {
"a_id": [
"cnhflr3"
],
"score": [
3
],
"text": [
"Across the total area of the future United States, indentured servants probably made up roughly 40 - 45% of all European migration before independence. In the early period of colonisation, this figure would have been much higher; as many as two-t... | [] | [] | [
[]
] | ||
87ixvq | what's happening when my back "pops" and is it bad? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/87ixvq/eli5_whats_happening_when_my_back_pops_and_is_it/ | {
"a_id": [
"dwd5e9g",
"dwdjudn"
],
"score": [
5,
3
],
"text": [
"Usually, when bones 'pop', you're basically popping very small air bubbles between your bones (or at least that's the best theory we've come up with). Your back popping is not a big deal if it happens rarely, but if it happe... | [] | [] | [
[],
[]
] | ||
bvig0h | why can my laptop pick up my wifi very well, but my phone, on the same desk, hardly connect at all? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bvig0h/eli5_why_can_my_laptop_pick_up_my_wifi_very_well/ | {
"a_id": [
"epperz6",
"eppmbul"
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"score": [
11,
7
],
"text": [
"I would only assume better hardware in the laptop given its increased form factor.\n\nSame reason you won't get a core i9 and 32gb ram in a smartphone.\n\nEdit - forgot to add phones are more power conscious so reduce perfo... | [] | [] | [
[],
[]
] | ||
1xatm8 | why lack of genuine industrialization in Argentina? | The way I see it, Argentina has never gotten properly industrialized (even compared to similar settler countries like Australia or Canada) for a couple of groups of reasons - 1) not the right social and institutional factors (e.g. large rural landowners being more predominant in Argentine affairs than the urban middle ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1xatm8/why_lack_of_genuine_industrialization_in_argentina/ | {
"a_id": [
"cf9thdv"
],
"score": [
14
],
"text": [
"This is a very good question, but it is challenging (perhaps impossible) to answer. Before delving into a response, I would like to point out some pragmatic challenges that make answering it especially difficult. First, historians and economis... | [] | [] | [
[]
] | |
25w87m | What was the significance, politically, of Israel instigating the '67 War with a preemptive strike on Egypt? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/25w87m/what_was_the_significance_politically_of_israel/ | {
"a_id": [
"chldi4x"
],
"score": [
2
],
"text": [
"I'd love to answer, but I want to make sure I know what you're asking for before I get into it. Are you referring to the significance in terms of how other nations perceived it, how it affected Israel's relations with other nations, or how it was... | [] | [] | [
[]
] | ||
agakop | Why do we need bigger 'colliders' to smash particles together harder? | Why do colliders need to be be bigger and bigger to smash particles together harder - why can't they be accelerated faster around a smaller ring?
Also, I thought they were already accelerated to basically light speed ( 0.999999991 *c* ) in the Large Hadron Collider (LHC) - why is a bigger ring needed to go faster/hard... | askscience | https://www.reddit.com/r/askscience/comments/agakop/why_do_we_need_bigger_colliders_to_smash/ | {
"a_id": [
"ee4vyfp",
"ee4zrn8",
"ee52z45"
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"score": [
9,
10,
3
],
"text": [
" > why can't they be accelerated faster around a smaller ring?\n\nWe are technologically limited. The faster the beam particles are moving, the stronger bending magnets are needed to curve the beam at... | [] | [
"https://www.bbc.co.uk/news/science-environment-46862486"
] | [
[],
[],
[
"https://www.lhc-closer.es/taking_a_closer_look_at_lhc/0.synchrotron_radiation"
]
] | |
3tb3yr | what policies and systems are (or aren't) in place to help veterans? who is responsible for the aid and implementation? why do so many vets seem to end up homeless or worse? how can people help them? | This is regarding US vets. Sorry rest of the world. Though feel free to add what systems are in place in your country as well. I was just wondering because so many people are bitching about why we should help veterans before refugees and it had me wondering about these questions and how I can help. As that little girl ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3tb3yr/eli5_what_policies_and_systems_are_or_arent_in/ | {
"a_id": [
"cx4yf5e"
],
"score": [
2
],
"text": [
"We have programs and tools in place to help veterans. The GI Bill pays for school, there are housing vouchers, and many companies are actively seeking to hire veterans. Reducing veteran homelessness and unemployment is something that requires a l... | [] | [] | [
[]
] | |
zzwin | - how does my body know how to do things that i can't control? | How does my heart know how to beat, my blood knows to respond to a wound. Is it possible to take control of these things? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/zzwin/eli5_how_does_my_body_know_how_to_do_things_that/ | {
"a_id": [
"c69bwvt"
],
"score": [
2
],
"text": [
"There is a part of the brain dedicated to \"automated\" functions of your body. Like a separate computer processor, it keeps track of things like the heart beating, intestines constricting to digest and move food, etc. Some things you can contr... | [] | [] | [
[]
] | |
35uoc5 | in what order should you brush, floss and mouth wash? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35uoc5/eli5in_what_order_should_you_brush_floss_and/ | {
"a_id": [
"cr7z8k1",
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"score": [
56,
9,
6,
3,
7,
2,
2
],
"text": [
"Just doing them in any order is better than not at all, but according to my dentist:\n\nFloss\n\nBrush (spit, don... | [] | [] | [
[],
[
"http://www.ada.org/en/science-research/ada-seal-of-acceptance/product-category-information/floss-and-other-interdental-cleaners"
],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Chlorhexidine"
]
] | ||
qd2dt | Can anybody help me identify a type of helmet? | I'm decoding a frontispiece of Vondel's 'Lucifer' (1656). I've found quite a few references, but my knowledge of military history is insufficient to identify [this helmet](_URL_1_).
Can someone link these types of helmets to a certain army or people? Or is this just a generic depiction of a helmet?
I would think it'... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/qd2dt/can_anybody_help_me_identify_a_type_of_helmet/ | {
"a_id": [
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2,
11
],
"text": [
"_URL_1_\n\nIt does indeed look a bit like a Morion, albeit a stylized one. It also looks a bit like the top of a [pikeman's helmet](_URL_0_), which were common for footsoldiers.\n\nI think there is an early modern warfare t... | [] | [
"http://i.imgur.com/Z4fmL.jpg",
"http://i.imgur.com/1kw7b.png"
] | [
[
"http://en.wikipedia.org/wiki/File:Burgonet_at_the_Met.png",
"http://en.wikipedia.org/wiki/File:Spanish_Conqueror_Helmet.jpg"
],
[
"http://www.wikipaintings.org/en/parmigianino/helmet-crossed-with-curved-strips-and-rosettes",
"http://en.wikipedia.org/wiki/Capeline",
"http://en.wikipedia.or... | |
23l5do | When did women begin painting their nails? | My friends and I are having this discussion and we have (we think) learned that in the US women began using nail polish in the 30's after the creation of auto paints.
But that can't be the start...so when did it begin? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/23l5do/when_did_women_begin_painting_their_nails/ | {
"a_id": [
"cgy3w9f",
"cgy465y",
"cgy6822"
],
"score": [
109,
467,
40
],
"text": [
"If you're interested in nail *polish*, you're on the right track with the automotive paint thing. Clear nail polish was invented in the 20s, and colored nail polish developed in 1930. From [\"COSME... | [] | [] | [
[
"http://www.sciencedirect.com/science/article/pii/S0733863505702060"
],
[],
[]
] | |
his8s | Thermodynamics, adiabatic expansion. (Joule-Thomson effect) | Wikipedia sais this on the topic of adiabatic expansion:
"In thermodynamics, the Joule–Thomson effect or Joule–Kelvin effect or Kelvin–Joule effect describes the temperature change of a gas or liquid when it is forced through a valve or porous plug while kept insulated so that no heat is exchanged with the environment... | askscience | http://www.reddit.com/r/askscience/comments/his8s/thermodynamics_adiabatic_expansion_joulethomson/ | {
"a_id": [
"c1vpv94",
"c1vq4ws",
"c1vsg0v"
],
"score": [
3,
2,
2
],
"text": [
"In an expansion such as you described, it is indeed adiabatic as Q=0 (no heat flow).\nAlso as you described, the change in internal energy would be zero because the gas is expanding against a vacuum and... | [] | [] | [
[],
[],
[]
] |
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