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 |
|---|---|---|---|---|---|---|---|---|---|
gez3o | What is the difference in a photon that is relaying an attractive force as opposed to a repulsive force? | If an electron emits a photon and that photon is absorbed by another close by electron a repulsive force is applied to the pair. If a positron emits a photon and an electron absorbs that photon an attractive force is applied to the pair. What is the difference in the photon? Something tells me entanglement has somethin... | askscience | http://www.reddit.com/r/askscience/comments/gez3o/what_is_the_difference_in_a_photon_that_is/ | {
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"This is a very good question, and quite difficult to answer. It's nothing to do with entanglement. To be honest, I've never had an intuition/analogy for attractive forces in terms of virtual particles, and that may well be because one doesn't exi... | [] | [] | [
[
"http://math.ucr.edu/home/baez/physics/Quantum/virtual_particles.html"
]
] | |
366x4o | why do most fast food restaurants specialize in hamburgers and french fries? why isn't there more variety? | If you're in the mood for a cheeseburger and fries, you're in luck because you have your pick of McDonald's, Burger King, Wendy's, Sonic, Carl's Jr., White Castle... the list goes on.
Hot dogs are a well-known and beloved American food too, but off the top of my head the only place I can think of to get a hot dog is N... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/366x4o/eli5_why_do_most_fast_food_restaurants_specialize/ | {
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"Tons of places offer hot dogs: street vendors, Sonic, Dairy Queen, and many more regional places. Many places offer Mexican food. Many places offer deli sa... | [] | [] | [
[],
[],
[
"http://www.rantlifestyle.com/wp-content/uploads/2014/07/picture-1-99-tm.jpg",
"http://everythinghapa.com/archives/12702",
"http://www.callahanshotdogs.com/",
"http://www.businessinsider.com/failed-mcdonalds-items-2011-8?op=1",
"http://en.wikipedia.org/wiki/List_of_hot_dog_restaura... | |
45r6p4 | How can an up quark decay into a down quark? | I am puzzled as to how this happens since the up quark is lighter than a down quark. The process calls for a W+ boson to be emitted from an up quark, converting the up into a down. Since the up quark is ~1.8-3.0MeV, and the down quark is ~4.8MeV, how does this "decay" happen? | askscience | https://www.reddit.com/r/askscience/comments/45r6p4/how_can_an_up_quark_decay_into_a_down_quark/ | {
"a_id": [
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"text": [
"Up quarks don't spontaneously turn into down quarks (at least in the case of free neutrons and protons)- it's forbidden by conservation of energy.\n\nAs a nucleon, UUD is a proton, while DDU is a down neutron. Free neutrons are heavier than prot... | [] | [] | [
[]
] | |
65ia1v | How accurate is the 1962 film 'Lawerence of Arabia'? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/65ia1v/how_accurate_is_the_1962_film_lawerence_of_arabia/ | {
"a_id": [
"dgahq6l"
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"score": [
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"text": [
"Hiya, these kind of media reviews are kind of tricky and hard to do, especially with something as long as Lawrence of Arabia. Could you maybe specify some particular details/scenes you are interested in being reviewed? "
]
} | [] | [] | [
[]
] | ||
1pzd24 | Why do cells mainly use ATP for energy transfer rather than another nucleoside triphosphate? | askscience | http://www.reddit.com/r/askscience/comments/1pzd24/why_do_cells_mainly_use_atp_for_energy_transfer/ | {
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"text": [
"Adenine is a formal polymer of HCN (C5H5N5) and is also a fairly stable compound in the conditions thought to have existed in the prebiotic soup. This is why its reasonable to assume that ATP was favored from the very beginning. Since adenine was... | [] | [] | [
[
"http://link.springer.com/article/10.1007/BF01653989"
]
] | ||
62boom | What did Russians think of the Lend-Lease equipment they received during WWII? Was it generally positive feedback or negative about the suitability of the equipment provided to them to be used in combat? Did they favor particular equipment? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/62boom/what_did_russians_think_of_the_lendlease/ | {
"a_id": [
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"text": [
"Talking specifically about the military hardware (I am not sure what they thought of the food, locomotives, and whatever else got sent over)...\n\nIt varied. The word \"Studebaker\" entered into the Russian lexicon as the trucks were so well rega... | [] | [] | [
[
"http://tankarchives.blogspot.com/2013/05/lend-lease-impressions-churchill.html"
]
] | ||
1sf5ns | how do front page posts disappear from the front page? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sf5ns/eli5_how_do_front_page_posts_disappear_from_the/ | {
"a_id": [
"cdwyzn0",
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"score": [
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"text": [
"Flat-out disappear? Moderators deleting the post, most likely.\n\nFall from the front page and down the rankings? The formula reddit uses takes into account the amount of time since the post was made, so the longer a post ha... | [] | [] | [
[],
[]
] | ||
augk27 | why quadratic equations work to find the graph of a parabola and how factoring works. | I just finished my test on quadratic equations, but my teacher did a great job of helping but not really explaining. I'm really confused please help. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/augk27/eli5_why_quadratic_equations_work_to_find_the/ | {
"a_id": [
"eh81ku7",
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"score": [
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"text": [
"The beloved quadratic formula is a tool for finding the roots (points where the value of the function is zero) of a second degree polynomial (a parabola). \n\nMany polynomial equations can be expressed as the product of a s... | [] | [] | [
[],
[]
] | |
btbrav | why is getting to the bottom of the ocean so exponentially difficult? | "The Trieste dove to 35,797 feet in 1960, and Cameron hit a slightly shallower point in the trench at 35,756 feet in 2012.
Vescovo's team plans to go deeper. It thinks it has identified a spot that could take the expedition to 35,859 feet"
& #x200B;
Why is only 60 feet extra the goal? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/btbrav/eli5_why_is_getting_to_the_bottom_of_the_ocean_so/ | {
"a_id": [
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"text": [
"The deeper you go, the heavier the water above you is. So the pressure at these depths is extreme. Building a craft to withstand still remains a challenge.",
"The deepest part of any ocean is the Marianas Trench. The bot... | [] | [] | [
[],
[]
] | |
2duu65 | What happens when a sperm and an egg of two different species come in contact with each other? Does the egg not even let the sperm in, or does it let it in but then the zygote DNA doesn't fuse? What happens with the conception of hybrid species like ligers? | askscience | http://www.reddit.com/r/askscience/comments/2duu65/what_happens_when_a_sperm_and_an_egg_of_two/ | {
"a_id": [
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"score": [
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"text": [
"So, several things probably prevent this from happening. One, there are certain cell-surface proteins required for the sperm and eg... | [] | [] | [
[],
[],
[],
[],
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"http://onlinelibrary.wiley.com/doi/10.1002/(SICI)1097-010X(19991015)285:3%3C251::AID-JEZ8%3E3.0.CO;2-1/abstract;jsessionid=E298167623C535B08D13FB7A619E2E96.f03t01",
"http://en.wikipedia.org/wiki/Acrosome_reaction",
"http://en.wikipedia.org/wiki/Zona_pellucida"
],
[
"ht... | ||
35kork | could gravity be an effect of time dilation, as opposed to the other way around? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35kork/eli5_could_gravity_be_an_effect_of_time_dilation/ | {
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"text": [
"You are one smart motherfucker. Seriously, you are, and I am not being facetious in the slightest. Between 1905 and 1915 or so, Einstein was asking himself the same questions, an... | [] | [] | [
[],
[],
[],
[]
] | ||
5263zr | How were extremely young kings received in medieval Europe? | When really young prepubescent children were crowned the king/queen of a country how did people react? How did normal people receive children being crowned monarchs, and how did the children handle the responsibility.
Did they ever fuck up diplomatic relations with other nations? Why did armies put up with following ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5263zr/how_were_extremely_young_kings_received_in/ | {
"a_id": [
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"score": [
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"text": [
"This is really not so hard a question to answer as you would imagine. The short answer is: they didn't exercise direct power, and for obvious reasons. The slightly longer answer is, prior to achieving something resembling the age of maturity - sa... | [] | [] | [
[]
] | |
4euqnx | what's up with these commercials on the radio telling me to buy gold because the market is going to crash? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4euqnx/eli5_whats_up_with_these_commercials_on_the_radio/ | {
"a_id": [
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"score": [
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"text": [
" People are trying to sell you gold. So they are trying to scare you into thinking that traditional investments are a bad idea and gold is safer. \n\n Advertisements come from comp... | [] | [] | [
[],
[],
[],
[]
] | ||
3k0gjd | why is graffiti hard to read, and why do they tag trains? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3k0gjd/eli5_why_is_graffiti_hard_to_read_and_why_do_they/ | {
"a_id": [
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"text": [
"That's the direction that particular art-form has gone. Since it's very much about lettering, the letters have taken a life of their own and become more and more elaborate. Partly it's also an in-group thing: you are part ... | [] | [] | [
[],
[]
] | ||
2qbhvq | how do we know for sure that cancer and other deceases aren't caused by being constantly exposed to small radiations from electronic devices and 3g, 4g, wifi, lte, bluetooth-signals? | I am in no way trying to be ignorant. I am certain that scientific studies has drawn some kind of conclusion, but how do we know *for sure*?
If you think about it, there are rarely times where you can enter a room and not being in the way of some kind of signal. It just crossed my mind, how heavily has this area been... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qbhvq/eli5_how_do_we_know_for_sure_that_cancer_and/ | {
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"text": [
"Wifi is just radio waves, a well researched technology we've been using for a long time. Cell phones emit a small amount of radiation, but studies by the WH... | [] | [] | [
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Mobile_phone_radiation_and_health#Cancer"
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] | |
44am1u | Where can i find information about France in the late 15th-early 16th century? | I've tried Wikipedia and similar sites but it offers very broad information and I'm looking specifically for information about how cities were laid out, what trades were commonly available and how citizens lived. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/44am1u/where_can_i_find_information_about_france_in_the/ | {
"a_id": [
"czoros2",
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"score": [
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4
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"text": [
"Check out Fernand Braudel's *The Mediterranean: and the Mediterranean World in the Age of Philip II*, first published in 1949, supposedly initially drafted while Braudel was imprisoned as POW in WW2, purely from his incredi... | [] | [] | [
[
"http://oldsite.english.ucsb.edu/faculty/ayliu/unlocked/braudel/mediterranean-toc.pdf"
],
[]
] | |
4bqx63 | why are we able to put our hands through liquids but not solids? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4bqx63/eli5_why_are_we_able_to_put_our_hands_through/ | {
"a_id": [
"d1bkwsm",
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"score": [
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5
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"text": [
"Liquids can be very complicated but are still liquids. The molecules in liquids are fairly short and do not bond much with each other. I am putting in these qualifiers. That is because water is special and has polar properti... | [] | [] | [
[],
[]
] | ||
2dzphs | Which current-day Japanese firms employed POW slave labor in World War 2? | I have been unable to find a list anywhere that indexes which Japanese corporations used American or other soldiers and civilians as slave labor during WWII, or the 2nd Sino-Japanese war.
I am interested which Japanese multinationals in existence today committed these crimes, or if there are successor companies, or p... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2dzphs/which_currentday_japanese_firms_employed_pow/ | {
"a_id": [
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"score": [
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"text": [
"This is a surprisingly difficult question. Forced labor was endemic among POWs in Japan, yes. But for the most part the most horrifying uses of POW forced labor were primarily relegated to the Burma Railway (the subject of the movie Bridge of t... | [] | [] | [
[]
] | |
2r8e46 | If you could build your own Viking era hall/fort/house, how would you go about doing it and what references would you use? | I ask because you guy are the best and always have ideas. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2r8e46/if_you_could_build_your_own_viking_era/ | {
"a_id": [
"cndfzex"
],
"score": [
3
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"text": [
"I'll assume you're asking about building an actual reconstruction of a Viking hall, not a modern house inspired by Viking stuff.\n\nReconstructing buildings based on archaeology is actually surprisingly easy, and has been done for at least a hund... | [] | [] | [
[]
] | |
3d7b7u | how chromecast starts playing where netflix last left off even when netflix isn't playing yet? | Even when the Chromecast is unplugged/disconnected, it still picks right up although its source isn't playing.
edit: sorry for the tag, I came from /r/DestinyTheGame. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3d7b7u/eli5_how_chromecast_starts_playing_where_netflix/ | {
"a_id": [
"ct2gz3k"
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"score": [
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"text": [
"Chromecast doesn't need to stream anything from the source device unless you're specifically playing content from it like locally stored video. For things available online like Netflix or Youtube, the Chromecast streams it directly from the inter... | [] | [] | [
[]
] | |
1qbv3u | What did Boudica wear? | I'm currently working on an oil painting of Boudica and I was curious what did she generally wear? Also anything specifically that would identify her as Queen of the Iceni. Crown, golden chain, or anything specifically that would identify her as a leader? Armour? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1qbv3u/what_did_boudica_wear/ | {
"a_id": [
"cdbd88l"
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"score": [
18
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"text": [
"Well, this isn't really my area of expertise, but I do have the book Boudica's Rebellion, from the usually excellent Osprey Publishing handy.\n\nThe simple answer, we don't have super detail descriptions, but we can make some reasonable guesses ... | [] | [] | [
[
"http://i.imgur.com/Y5Nudyj.jpg"
]
] | |
m38ni | Does the rate at which time passes ever change? | If it did...
Would we be able to perceive it? In what units would we measure it? | askscience | http://www.reddit.com/r/askscience/comments/m38ni/does_the_rate_at_which_time_passes_ever_change/ | {
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"score": [
3,
3,
2,
3,
3,
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"text": [
"Apparently yes. Time is affected by gravity. Time actually passes differently for astronauts than it does for people on earth. Time also... | [] | [] | [
[
"http://topdocumentaryfilms.com/through-the-wormhole-does-time-exist/"
],
[
"http://en.wikipedia.org/wiki/Special_relativity#Time_dilation_and_length_contraction"
],
[],
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"http://topdocumentaryfilms.com/through-the-wormhole-does-time-exist/"
],
[
"http://en.wikipedia.org/wiki/Specia... | |
6i0ehk | i need to understand hmm model but the docs are too technical for me. | I need to work with Sound recognition. But just explain the HMM model and what is special about it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6i0ehk/eli5_i_need_to_understand_hmm_model_but_the_docs/ | {
"a_id": [
"dj2m1pi"
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"score": [
3
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"text": [
"A Hidden Markov Model is a way of modeling a system in which it's assumed that some part of the system is *unobservable*, or hidden. Imagine you're watching your friend prepare food and you see that he doesn't cook it long enough, and then you ea... | [] | [] | [
[]
] | |
2qpa8z | hawk's are said to have eight times better vision than humans. what does this mean exactly? | How can I understand this better? If I see through a lens and blure my vision to half, I see nine times worse than an hawk? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qpa8z/eli5_hawks_are_said_to_have_eight_times_better/ | {
"a_id": [
"cn881r0",
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"score": [
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3
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"text": [
"\n\nTheir acuity is 8 times better. This means if you can the texture on the wall from 1 foot they can see it from 8. You can still see the wall at 8 but you don't get all the detail a hawk would. \n\nSince you can't really... | [] | [] | [
[
"http://blog.eyewire.org/hawks-vision-different-humans/"
],
[]
] | |
9tgtyx | what is bread? | I've been eating this stuff since I was 3. It's about time I figured out what it's up to. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9tgtyx/eli5_what_is_bread/ | {
"a_id": [
"e8w8h4e"
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"score": [
9
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"text": [
"What you need is flour and water. The most common flour is wheat flour from milled wheat grains. You can use flour from rye, barley, corn, oats, sorghum, millet, rice etc\n\nThen you heat is som way where a oven or a a frying pan is the most comm... | [] | [] | [
[]
] | |
mxj38 | How do you "turn on" a nuclear reactor? | I've seen pictures like [this](_URL_0_) of people loading a nuclear reactor with fuel. My question is, how do you actually "start" a reactor once it's loaded with fuel?
Do you just drop all the uranium pellets in and then run like hell as they heat up? | askscience | http://www.reddit.com/r/askscience/comments/mxj38/how_do_you_turn_on_a_nuclear_reactor/ | {
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"score": [
152,
23,
6,
5,
152,
23,
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"text": [
"It's difficult to explain in layman's terms while still being understandable.\n\nYou h... | [] | [
"http://en.wikipedia.org/wiki/File:ATR_INL_2.jpg"
] | [
[],
[],
[
"http://www.acme-nuclear.com/",
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],
[],
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"http://www.acme-nuclear.com/",
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dytfn7 | How did the concept of ownership arise in the world? How was the concept of private property separate from this? | How did the concept of ownership arise in the world? How was the concept of private property separate from this?
[According to this JSTOR article, it seems that it is debatable whether private property existed in the Americas before Columbus.](_URL_0_)
Evidently, the legal concept of private property came to have a ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dytfn7/how_did_the_concept_of_ownership_arise_in_the/ | {
"a_id": [
"f84ntiu"
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"score": [
12
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"text": [
"This is a question to ask anthropologists and archaeologists -- a matter of prehistory, not history. In our first historical records, property is already a well established concept. In Mesopotamian cuneiform tablets we find extensive discussion ... | [] | [
"https://daily.jstor.org/yes-americans-owned-land-before-columbus/"
] | [
[
"https://science.sciencemag.org/content/366/6466/731",
"https://www.reddit.com/r/AskAnthropology/"
]
] | |
972ys0 | How do plants "ingest" water, nutrients and minerals? | askscience | https://www.reddit.com/r/askscience/comments/972ys0/how_do_plants_ingest_water_nutrients_and_minerals/ | {
"a_id": [
"e47gvd2"
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"score": [
2
],
"text": [
"Their roots are plant versions of your intestine. They can absorb minerals, some nutrients, and water from the ground, passing through and around the cells. Plants also have the ability to exchange gases through their leaves, like lungs do. The... | [] | [] | [
[]
] | ||
1t1pvz | Have we, or could we use volcanos for energy? | askscience | http://www.reddit.com/r/askscience/comments/1t1pvz/have_we_or_could_we_use_volcanos_for_energy/ | {
"a_id": [
"ce3hwkb",
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7,
9,
3
],
"text": [
"Geothermal energy is similar in idea, if not in spirit. ",
"In theory we could as it is a source of heat capable of producing steam and driving turbines, and with the lava so close to the surface ca... | [] | [] | [
[],
[],
[]
] | ||
27sca1 | when a transgender person is put in a gender specific institution such as prison, how is it determined which facility is appropriate? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27sca1/eli5_when_a_transgender_person_is_put_in_a_gender/ | {
"a_id": [
"ci3vr7y",
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"score": [
11,
2
],
"text": [
"They assign them according to birth sex. No matter how long they have identified as the other. If they have had surgery they assign them according to their reassigned sex. Ones that have not has surgery are at high risk ... | [] | [] | [
[],
[]
] | ||
a8gwp0 | why is anaphylactic reaction so violent and harsh to humans? what sense does it make as far as biological advantage? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a8gwp0/eli5_why_is_anaphylactic_reaction_so_violent_and/ | {
"a_id": [
"ecakecj",
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"score": [
8,
4
],
"text": [
"Anaphylaxis is caused by an antibody called immunoglobulin E overreacting to what it thinks are infections and causing excess histamine to be released which in turn can cause severe reactions possibly leading to anaphylaxis.... | [] | [] | [
[
"https://youtu.be/zk_oUk0bwxs"
],
[]
] | ||
64ogyp | in high energy physics, how come the sonic boom is nowhere to be found? | Particles at/near light speed are traveling very fast- well above Mach 1. So, where are the sonic booms? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/64ogyp/eli5_in_high_energy_physics_how_come_the_sonic/ | {
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"text": [
"Sonic booms are made when something moves through the air faster than the speed of sound and creates shockwaves.\n\nInside a large particle accelerator like the Large Hadron Collider, it's about as close to being a perfect vacuum as you can get. ... | [] | [] | [
[]
] | |
5fugr2 | How did Scandinavia transition out of the viking age and into the medieval era, culturally, as well as militarily? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5fugr2/how_did_scandinavia_transition_out_of_the_viking/ | {
"a_id": [
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"text": [
"Can you elaborate on what you mean?\n\nThe Viking Age is part of the medieval period. \n\nAre you referring to the Christianization of Scandinavian peoples?",
"So, there are a few ways that you can... | [] | [] | [
[],
[],
[]
] | ||
ckh7ii | Why did the Mongols convert to the native religions of their conquered territories despite maintaining their ethnic separatism? | This invites the question of why elite ethnic groups with pre-existing religious structures tend to abandon or amend them to align with ‘weaker’ conquered peoples? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/ckh7ii/why_did_the_mongols_convert_to_the_native/ | {
"a_id": [
"evwvrvz"
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"score": [
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"text": [
" To tackle this, I want to first explain what the native Mongol religion was, then why it didn't supplant local customs. Because you're right: the Mongols had a high opinion of themselves (and they did conquer the largest land empire in history,... | [] | [] | [
[
"https://depts.washington.edu/silkroad/texts/rubruck.html#religion"
]
] | |
blos0p | What mistakes int 'Grand Strategy' led to the German defeats in the Battle of Britain and in Operation Barbarossa? | There seems to be a reasnoble concensus view among historians that the two big failings of the German war effort were the Battle of Britain and operation Barbarosa, but also that there was very little the Germans could have done in military terms to change the outcome.
& #x200B;
So my question is, after the battle... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/blos0p/what_mistakes_int_grand_strategy_led_to_the/ | {
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"As historically conceived? No. Barbarossa was built around poor intelligence on the strength of the Soviets, particularly on the scale of their reserves, and wishful thinking based on a campaign plan that had mortgaged Germany's entire future on ... | [] | [] | [
[
"https://history.army.mil/html/books/104/104-21/cmhPub\\_104-21.pdf",
"https://history.army.mil/html/books/104/104-21/cmhPub_104-21.pdf"
]
] | |
3jmjkr | AMA: The History of Television News in the United States | Hi, I’m Charles L. Ponce de Leon. I’m a historian at Long Beach State University in California and an expert in modern US cultural history, especially the history of the mass media. My latest book, That’s the Way It Is: A History of Television News in America, has just been published by the University of Chicago Press... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3jmjkr/ama_the_history_of_television_news_in_the_united/ | {
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... | [] | [
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145baw | Why is the dollar sign $ an S with a line through it? | The symbol for the Euro is an E, the symbol for the Thai Baht is a B, etc. Why the S? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/145baw/why_is_the_dollar_sign_an_s_with_a_line_through_it/ | {
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"text": [
"The dollar sign actually predates US dollars, and possibly is derived from an '8' with a slash through it, as in 'pieces of 8'. There is a theory that the American usage of the sign comes from superimposing the U and the S o... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Dollar_sign"
],
[]
] | |
32pii8 | after his predecessor's death, how is the "newest incarnation" of the dalai lama found? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32pii8/eli5_after_his_predecessors_death_how_is_the/ | {
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"text": [
"Using someone called the Panchen Lama, part of who's job it is is finding the next Dalai Lama. When the Panchen Lama dies, one of the duties of the Dalai Lama is to find the Panchen Lama. This is how it has been for around 700 years. The two of t... | [] | [] | [
[]
] | ||
5n25l9 | how do sea creatures change depth rapidly without getting pressure sickness? | Not sure if pressure sickness is what its called.
I'm referring to when divers dive down a to certain depths, they need to wait and acclimatize to the depth before proceeding up or down.
How do animals like whales and other deep sea creatures surface so fast without exploding? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5n25l9/eli5how_do_sea_creatures_change_depth_rapidly/ | {
"a_id": [
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"text": [
"What you're referring to is decompression sickness - it only happens when ascending. You can descend as fast as you want. Decompression sickness happens because gas dissolves in your blood at high pressure and comes out when pressure reduces. Thi... | [] | [] | [
[
"http://www.nature.com/scitable/blog/saltwater-science/do_whales_suffer_from_decompression"
]
] | |
bh83eg | What makes cow's milk amenable to homogenization that is different from plant milks that use emulsifying agents? | askscience | https://www.reddit.com/r/askscience/comments/bh83eg/what_makes_cows_milk_amenable_to_homogenization/ | {
"a_id": [
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"Plant milks aren't single substances. I'm less sure about soy milk, but oat, rice and nut milks are a fine powder of the ingredient that gives the name blended with water and some type of vegetable oil. This mix will separa... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Stokes%27_law"
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js17a | Why is our inhale weak compared to our exhale? | Why can I blow a marble off a table easily, but even if I were to get an inch away from it and inhale, it doesn't budge? | askscience | http://www.reddit.com/r/askscience/comments/js17a/why_is_our_inhale_weak_compared_to_our_exhale/ | {
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"Forced respiration is controlled by your [intercostal muscles](_URL_0_). For exhalation, the muscles can actually contract around y... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Intercostal_muscle"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Intercostal_muscle"
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[],
[]
] | |
1fh5dx | Look! Here is a hydrogen atom! Close your eyes.. look again! Here is a hydrogen atom! Can you tell if it is the same one? | What properties of an atom makes it distinct from others? | askscience | http://www.reddit.com/r/askscience/comments/1fh5dx/look_here_is_a_hydrogen_atom_close_your_eyes_look/ | {
"a_id": [
"caa7e7v",
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13,
2,
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"text": [
"There is no property that distinguishes atoms that are in the same configuration/energy state, they are completely identical and completely indistinguishable.",
"No, you cannot tell. They are all i... | [] | [] | [
[],
[],
[]
] | |
b9lbb9 | How is the Russo-Japanese War viewed in relation to the rise of communist Russia and the Cold War? | A proud Russia was basically emasculated on an international scale. In historical study, is this seen as a major driver behind the rise of communist Russia and the motivations of Soviet Russia in the Cold War? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/b9lbb9/how_is_the_russojapanese_war_viewed_in_relation/ | {
"a_id": [
"ek5dgxq"
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"score": [
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"text": [
"It is tempting to see tsarist Russia's loss in the Russo-Japanese War as an important stepping stone towards the Soviet Union. The 1905 Revolution appeared on the heels of defeat and the Bolsheviks would claim that 1905 was a dress rehearsal for ... | [] | [] | [
[
"https://www.marxists.org/archive/lenin/works/1905/jan/14.htm"
]
] | |
942yd0 | how do buildings decay to such a horrible state? (image in post) |
How are buildings actually able to decay this much? How do abandoned buildings eventually decay into this condition? What actually happens to cause them to fall apart like this? Like what's the actual process of how a building goes from being abandoned to looking like this?
Images for reference of what I'm talking ab... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/942yd0/eli5_how_do_buildings_decay_to_such_a_horrible/ | {
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"text": [
"Much like our bodies and pretty much all things in existence buildings need maintenance, defenses, and check ups. Because much like human bodies there are chemicals and elements th... | [] | [
"http://imgur.com/a/hhZeybD"
] | [
[],
[],
[],
[]
] | |
166voe | I know Django Unchained is a typical Tarantino movie but were there really female slaves regarded as 'high class hookers', such as Sheba who appeared to even dine with her owners? Were there any 'slaves' who seemed to live a relatively good life? Thanks for your response. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/166voe/i_know_django_unchained_is_a_typical_tarantino/ | {
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"This isn't my area of expertise, but I do... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Chica_da_Silva"
],
[],
[],
[
"http://www.ebony.com/entertainment-culture/django-unchained-nichole-galicia-495"
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"http://www.amazon.com/Women-Slavery-French-Antilles-1635-1848/dp/0253214521",
"http://www.amazon.com/Capitalism-Slavery-Eric-Williams/dp/08... | ||
4shqfb | Is there a reason why we feel uneasy when there is silence? | I can't sleep without a slight noise
I dont do much on my computer without music or a podcast
running
I cant even really walk around without music
Is there a physical or mental need for there to be noise for me, or anyone else, to be motivated? Why do i feel weird when i don't have some kind of constant noise? | askscience | https://www.reddit.com/r/askscience/comments/4shqfb/is_there_a_reason_why_we_feel_uneasy_when_there/ | {
"a_id": [
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"Lack of information can be disorienting for those that aren't used to it. Think of it like throwing a null value into a program that isn't prepared to deal with it. It creates an awkward situation that the brain can't compre... | [] | [] | [
[],
[]
] | |
8l0u8m | why is it wrong to test pulse with a hand on the chest, and what makes the wrist/neck so accurate? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8l0u8m/eli5_why_is_it_wrong_to_test_pulse_with_a_hand_on/ | {
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"It’s easier to feel a pulse from a vein that’s closer to the skin. The neck is one of the best if not the best place to take the pulse,... | [] | [] | [
[],
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[],
[],
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[]
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30oy3l | people who regularly use eli5, why didn't you just google it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30oy3l/eli5_people_who_regularly_use_eli5_why_didnt_you/ | {
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"ELI5 why salt is so salty when i have a col... | [] | [] | [
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"http://lmgtfy.com/?q=Why+don%27t+you+just+Google+it%3F"
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[]
] | ||
7y0xdw | why is it our throat that gets ‘affected’ and signals our body when we are thirsty? | Dehydration affects our entire body, and our throat is, as far as I know, merely a pipe that tunnels water to our system. It makes sense to me that we feel the emptiness of our stomach when we are hungry, but the throat feels rather odd. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7y0xdw/eli5_why_is_it_our_throat_that_gets_affected_and/ | {
"a_id": [
"ducpazl"
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"score": [
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"text": [
"Mucus created in your sinuses drips into your throat causing bacterial inflammation.\n\nSource: I imagine myself playing a doctor on TV"
]
} | [] | [] | [
[]
] | |
ajsvd8 | why do prostate cancer survivors live longer than the average person? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ajsvd8/why_do_prostate_cancer_survivors_live_longer_than/ | {
"a_id": [
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"text": [
"I'd guess this is a result of correlation not equaling causation. My guess is that to have prostate cancer detected, you'd have to have health care that covered preventative care. Ok, so that rules out many lower income men ... | [] | [] | [
[
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4485977/"
],
[]
] | ||
3re2k8 | why do american football teams not pass the ball more after the snap? | So I saw this video on Reddit the other day of an amazing touchdown _URL_0_ and I was wondering why after the snap or once the ball is thrown to the receivers is the ball not passed more? If the offence is allowed to block defenders then surely passing or offloading the ball to keep it in play would gain players more g... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3re2k8/eli5_why_do_american_football_teams_not_pass_the/ | {
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"text": [
"It is very, very risky, and you can only lateral backwards, so anyone who is about to tackle you will just tackle that guy instead, and... | [] | [
"http://youtu.be/_YXwuaniPoc"
] | [
[],
[],
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] | |
f82ewo | if something has a 1% chance and i do it 100 times, will i get it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f82ewo/eli5_if_something_has_a_1_chance_and_i_do_it_100/ | {
"a_id": [
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"score": [
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"text": [
"Maybe. The total probability is 1 - .99^100 = .63 = 63% chance of succeeding at least once."
]
} | [] | [] | [
[]
] | ||
16l0f4 | Does thorium offer an alternative for uranium? | askscience | http://www.reddit.com/r/askscience/comments/16l0f4/does_thorium_offer_an_alternative_for_uranium/ | {
"a_id": [
"c7x06f3"
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"score": [
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"text": [
"Use the search, Luke."
]
} | [] | [] | [
[]
] | ||
7bhpgj | What is the name of this british patch used in WW2? | _URL_0_
I'm currently coloring a picture of a british soldier in photoshop, but i dont know the correct color of this patch | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7bhpgj/what_is_the_name_of_this_british_patch_used_in_ww2/ | {
"a_id": [
"dpi2kz9"
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"text": [
"That's the emblem of the 43rd Wessex Infantry Division. The wyvern is supposed to be coloured gold. It appears that [this auction](_URL_0_) is for the insignia that you're colouring."
]
} | [] | [
"https://imgur.com/a/utq17"
] | [
[
"https://www.the-saleroom.com/en-gb/auction-catalogues/ryedale-auctioneers/catalogue-id-srrye10076/lot-e43f6301-5291-4b8e-9485-a51b00995333"
]
] | |
1qu6b0 | Why did land mass start out as one big clump (Pangea) rather than spread out right from the start? | askscience | http://www.reddit.com/r/askscience/comments/1qu6b0/why_did_land_mass_start_out_as_one_big_clump/ | {
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"text": [
"It didn't start out that way, Pangea was just the last supercontinent that formed. The continents on the Earth roughly follow something called the supercontinent cycle, gradually changing from continents, to a supercontine... | [] | [] | [
[],
[
"http://www.scotese.com/earth.htm"
]
] | ||
2ua12u | why is occam's razor a thing? | I see it used a lot on Reddit. I've done some looking around but I must not be fully comprehending what it means and entails. What I'm getting is that "the simplest explanation is best". Why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ua12u/eli5_why_is_occams_razor_a_thing/ | {
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... | [] | [] | [
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6h01u1 | Is wearing Bluetooth headphones all day dangerous to our health? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/6h01u1/is_wearing_bluetooth_headphones_all_day_dangerous/ | {
"a_id": [
"diuh5ww"
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"score": [
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"text": [
"This question should be posted in the health section but as a telecommunication engineering student I have looked into this and I will elaborate on what I found.\n\nFirst, the cancer story is likely originated from a confusion of what radiation ... | [] | [] | [
[]
] | |
sdcio | How tall must a building be before it's possible for clouds to form and rain to fall? | I seem to recall the Vehicle Assembly Building for the Space Shuttle could have some kind of weather. Is this a function of height only or does the overall volume matter? | askscience | http://www.reddit.com/r/askscience/comments/sdcio/how_tall_must_a_building_be_before_its_possible/ | {
"a_id": [
"c4d4rxo",
"c4d5gwm",
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"score": [
6,
16,
5
],
"text": [
"If I understand it correctly, it's a function of relative humidity, temperature, and pressure. If a space has uniform conditions, \"weather\", as described, wont happen. However, given sufficient diffe... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Lapse_rate"
],
[]
] | |
acvkkm | Does the popularity of Le/La- and De/Da- prefixes in black American first names have anything to do with French? | There have been a few answers here about the uniqueness common in black American names, but this particular connection seems too coincidental to me. Haiti, New Orleans, and other formerly French areas factor heavily into African-American history, is there any documented sociological or historical connection between tha... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/acvkkm/does_the_popularity_of_lela_and_deda_prefixes_in/ | {
"a_id": [
"edc7qau",
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"score": [
12,
15
],
"text": [
"I am a linguist, but not a historical one. You might find more success with this question over at r/linguistics. African American Vernacular English (AAVE) has a complex history influenced by many languages. A specialist i... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/3nu9cw/what_is_the_origin_of_certain_naming_trends_in/",
"https://www.reddit.com/r/AskHistorians/comments/26y0oi/when_and_why_did_black_names_eg_jaquan_damarius/"
]
] | |
3omvmn | Bobadilla and Columbus | Most of the horrible stories we hear about Columbus (and that have circulated once again this October 12th) come from one primary source, the investigation of Bobadilla.
Interestingly, most of the deeds described in these papers were against Spaniard subjects rather than Indians.
Considering that Bobadilla was the on... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3omvmn/bobadilla_and_columbus/ | {
"a_id": [
"cvyrc4i"
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"score": [
3
],
"text": [
"There are numerous reports about Columbus' cruelty, even excluding Bobadilla. The Dominicans were investigating him around the same time and his own journals talk of some of the brutality. Bobadilla focused on Spanish subjects because those were ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3iqsbc/what_is_the_truth_about_christopher_columbus_how/"
]
] | |
3uv4fn | why is apple removing features from its new products? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3uv4fn/eli5_why_is_apple_removing_features_from_its_new/ | {
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17,
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"text": [
"In general, Apple will add or remove features when they believe that the addition or removal will make them more money. This is either due to lower production costs, or higher sa... | [] | [] | [
[],
[],
[],
[]
] | ||
2nybds | i turned my phone off with 65% battery. i just turned it on after an hour and a half and it's at 73%. what's happening? | Also, it's not depleting really fast, it's a real charge. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2nybds/eli5_i_turned_my_phone_off_with_65_battery_i_just/ | {
"a_id": [
"cmhztey"
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"score": [
3
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"text": [
"A phone's battery percentage is an estimate of how much power it has left based on the power it is providing. Using an app that drains a lot of battery and checking the battery while it is still running will cause the ping reaction of checking ba... | [] | [] | [
[]
] | |
dl64kw | what is aws and what sort of work is involved? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dl64kw/eli5_what_is_aws_and_what_sort_of_work_is_involved/ | {
"a_id": [
"f4o07qe",
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"score": [
5,
7
],
"text": [
"In the past, companies would have physical computers in specially cooled rooms that ran important functions such as serving websites, email servers or other specialised software. As the complexity of software increases and t... | [] | [] | [
[],
[]
] | ||
228xh6 | Is there an upper limit (threshold?) for the measurable brightness of illumination during bio-luminescence? | Let's say you use the brightest known organism as an example, maybe? I really hope this makes sense. | askscience | http://www.reddit.com/r/askscience/comments/228xh6/is_there_an_upper_limit_threshold_for_the/ | {
"a_id": [
"cgktcb6"
],
"score": [
2
],
"text": [
"This may not be the exact question you asked but I will answer it anyway. Bio-luminescence/fluorescence/phosphorescence are all phenomenon which results from molecules absorbing energy and releasing it in the form of light. Rather than talk about... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Fluorophore"
]
] | |
1pa1i2 | how can red, green and blue pixels produce billions of colors on my computer screen? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pa1i2/eli5_how_can_red_green_and_blue_pixels_produce/ | {
"a_id": [
"cd09zio"
],
"score": [
2
],
"text": [
"Because the red, green and blue subpixels have more states than just on and off. Each one can be lit at 256 different levels, so this produces 256\\*256\\*256 different combinations, which is about 16.8 million colours."
]
} | [] | [] | [
[]
] | ||
umh50 | What is meant in electromagnetics by "Magnetic Current"? | askscience | http://www.reddit.com/r/askscience/comments/umh50/what_is_meant_in_electromagnetics_by_magnetic/ | {
"a_id": [
"c4woheg",
"c4wozmq"
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"score": [
3,
2
],
"text": [
"Simply put, just as electric current is the movement of electric charges through a material, magnetic current reference the apparent motion of magnetic \"charges\" or monopoles through a material. \n\nI've only seen evidenc... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Spin_ice",
"http://en.wikipedia.org/wiki/Spin_ice#Spin_ices_and_magnetic_monopoles",
"http://en.wikipedia.org/wiki/Quasiparticle"
],
[]
] | ||
3afkg4 | Why are so few pirate ships found? | I was reading an article yesterday about pirates and it said only 1 has ever been found.
_URL_0_
Why is this the case? If there have been so many stories about pirates and pirate ships.
Did they burn them? Does nobody look?
| AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3afkg4/why_are_so_few_pirate_ships_found/ | {
"a_id": [
"csc7tev"
],
"score": [
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"text": [
"“Few” is an understatement. To date, only two Golden Age pirate ships have been found and positively identified, the *Whydah* (in 1984) and the *Golden Fleece* (in 2009). Claims have been made on a few others, such as Blackbeard’s *Queen Anne’s ... | [] | [
"https://en.wikipedia.org/wiki/Whydah_Gally"
] | [
[
"http://www.amazon.com/Pirate-Hunters-Treasure-Obsession-Legendary/dp/1400063361"
]
] | |
14gjpt | how is antimatter created and why is it so expensive? | most i know is from here
_URL_0_
it says how antimatter is made but i dont completely understand it can someone please explain it to me? | askscience | http://www.reddit.com/r/askscience/comments/14gjpt/how_is_antimatter_created_and_why_is_it_so/ | {
"a_id": [
"c7cvmhe"
],
"score": [
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],
"text": [
"Basically, if you accelerate two particles enough and collide them, they can produce a wide variety of different particles shooting off afterwards. When a particle is created, an antiparticle must also be created. \n\nThe reason why it is so ex... | [] | [
"http://en.wikipedia.org/wiki/Antimatter"
] | [
[
"http://lhc-closer.es/php/index.php?i=1&s=4&p=17&e=0"
]
] | |
4f3kpu | how does mvc programming work? | Hi! I just started using codeigniter and I love it! I have programmed in php for a long time, but simple things. Now I am tasked with a big project and CI will help... Only I can't seem to wrap my head around MVC programming. I know what code to write, but I usually don't know where to put it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4f3kpu/eli5_how_does_mvc_programming_work/ | {
"a_id": [
"d25le3a"
],
"score": [
13
],
"text": [
"The M stands for model. This is where you create a data 'model' of the problem you are working on. You might have a user and that user has certain data related to it like a name and an address and a password. That user might have a 'shopping car... | [] | [] | [
[]
] | |
4gedpr | If the cooling of one object is caused by the transfer of heat to another object, how does the Earth cool in winter? Isn't space empty? | My icy drink is cooled because it transfers its own heat energy to the ice. How then does Earth cool, if there's no surrounding matter in space to soak up the Earth's heat energy? | askscience | https://www.reddit.com/r/askscience/comments/4gedpr/if_the_cooling_of_one_object_is_caused_by_the/ | {
"a_id": [
"d2h8j7z",
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"score": [
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"text": [
"Heat can be transferred either via processes known as *conduction* or *convection*, which require contact with surrounding matter, or via a process known as *radiative heat transfer* (a.k.a. *radiation*), in which the heat ... | [] | [] | [
[],
[]
] | |
2jnd4s | Why isn't lithium discussed in fusion energy? | Whenever I read about research into fusion energy a common theme is the difficulty in finding helium-3, however lithium-6 has been used in fusion weapons for over half a century. What makes it a poor candidate for power generation? | askscience | http://www.reddit.com/r/askscience/comments/2jnd4s/why_isnt_lithium_discussed_in_fusion_energy/ | {
"a_id": [
"cldh1cb"
],
"score": [
12
],
"text": [
"The purpose of Lithium is to breed Tritium on the fly for fusion with Deuterium fuel. All fusion reactors schemes include a Lithium blanket or reservoir that must capture a serious fraction of the neutron flux. Almost all proposed fusion power p... | [] | [] | [
[]
] | |
h6t2p | -Physics- Gravity in the center. | Is gravity in the centre of a cosmic object 0 or is it the same as on the surface? | askscience | http://www.reddit.com/r/askscience/comments/h6t2p/physics_gravity_in_the_center/ | {
"a_id": [
"c1t0k9r",
"c1t3tj0"
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"score": [
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2
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"text": [
"If by center you mean center of mass, then it is zero. However, the \"center\" is usually in a very dense area and being in the exact center you still will have a large amount of pressure. The center is actually a very smal... | [] | [] | [
[],
[]
] | |
2o3rjy | why does rolling my shoulders seem to make a surge of warmth spread through my neck and back when i'm cold? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2o3rjy/eli5_why_does_rolling_my_shoulders_seem_to_make_a/ | {
"a_id": [
"cmjheyd"
],
"score": [
2
],
"text": [
"I would assume it's because you're using the muscles in your neck and back to roll your shoulders."
]
} | [] | [] | [
[]
] | ||
3vkwxe | how can eyelids block out so much light despite being so thin? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vkwxe/eli5_how_can_eyelids_block_out_so_much_light/ | {
"a_id": [
"cxodfhw"
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"score": [
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"text": [
"Well, I'm going to answer with a question for you to think about: Why are you asking this about eyelids specifically? There are lots and lots and lots of things that you can't see through despite the fact that they're thin.\n\nIn fact, eyelids ar... | [] | [] | [
[]
] | ||
2w5alb | Where in physics does 1+2+3+4+5+...=-1/12 become relevant? | I saw on the numberphile YouTube channel about the infinite sum 1+2+3+4+5+...to infinity equals -1/12. They showed based on Euler that it is so and mentioned that this is why string theory has 26 critical dimensions. Are there any other concepts in physics that are more universally accepted than string theory that us... | askscience | http://www.reddit.com/r/askscience/comments/2w5alb/where_in_physics_does_12345112_become_relevant/ | {
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"conu7ny",
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"text": [
"If you will be adding natural numbers infinitely, you will never get -1/12, so the sum of 1+2+3... is never equal to -1/12. Actually, it is a divergent seri... | [] | [] | [
[
"http://en.m.wikipedia.org/wiki/Zeta_function_regularization"
],
[
"http://en.wikipedia.org/wiki/Renormalization"
],
[],
[],
[]
] | |
9spr44 | can someone explain the basics of recombinant dna? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9spr44/eli5_can_someone_explain_the_basics_of/ | {
"a_id": [
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2,
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"text": [
"Recombinant DNA is kind of like Frankenstein's monster, we stitched together a bunch of unrelated pieces into one functional thing.\n\nThe idea behind recombinant DNA is that it allows us to attach segm... | [] | [] | [
[],
[],
[]
] | ||
28ss8z | I'm a writer, I'm looking for good first-hand accounts of the Nazi extermination camps for a novel I wish to write. | I'm not interested in academic or purely historical writings, more in getting a "feel" for what it was like to be interned in these infernal places, the day to day to the long term psychological consequences for the survivors. I'm specifically looking for any books or memoirs written by former guards. Are there any boo... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/28ss8z/im_a_writer_im_looking_for_good_firsthand/ | {
"a_id": [
"cie50hb",
"cie8irs"
],
"score": [
4,
3
],
"text": [
"read \"Night\" by Elie Wiesel. It's a really brutal, true, biographical account of a normal Jewish kid's experience of the holocaust.",
"You absolutely have to watch Claude Lanzmann's masterful nine-hour-long *Shoah* doc... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=l8Q2lIbi2Vs"
]
] | |
de7hiq | value added tax in the uk | I thought its was just a 20% tax on all purchases, but after watching a YouTube video on it, it seems more convoluted than that | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/de7hiq/eli5_value_added_tax_in_the_uk/ | {
"a_id": [
"f2syen6"
],
"score": [
2
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"text": [
"Conceptually a VAT adds a tax to each level in the production process in which value is added to a product. \n\nFor example, if you are making a widget then a company would buy the raw materials and then make the widget (step 1), and then another... | [] | [] | [
[]
] | |
37qgcj | Has human society and culture fundamentally altered our own biological evolution? | Our procreation and survivability is now entangled with our culture and other non-biological motivations, does this somehow change our evolutionary tract? Or is it really just too small of a blip? | askscience | http://www.reddit.com/r/askscience/comments/37qgcj/has_human_society_and_culture_fundamentally/ | {
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"score": [
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"text": [
"tl;dr: absolutely\... | [] | [] | [
[
"http://onlinelibrary.wiley.com/doi/10.1046/j.1420-9101.2001.00262.x/full",
"http://www.nature.com/ng/journal/v35/n4/full/ng1263.html",
"http://www.nature.com/news/2005/050307/full/news050307-15.html",
"http://web.mit.edu/~aksarkar/p/annurev%252Egenet%252E37%252E110801%252E143820.pdf"
],
[
... | |
11zwvm | Which animal can kill the largest target relative to its own body size? | I'm wondering which animal is best at killing things larger than itself, if you measure just by the ratio of difference between the two. Things like tiny spiders killing humans. Who's the best at it? Which pair of animals exhibits the largest difference of size where one can still kill the other, hypothetically?
For ... | askscience | http://www.reddit.com/r/askscience/comments/11zwvm/which_animal_can_kill_the_largest_target_relative/ | {
"a_id": [
"c6r0tde",
"c6r3sfy"
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"score": [
2,
2
],
"text": [
"You're on the right track with hive animals. Flurries of locusts, wasps, and such can be pretty horrifying. Bullet ants, in particular, possess especially nasty neurotoxins that make them particularly fearsome. Same goes for... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Box_jellyfish",
"http://www.youtube.com/watch?v=n0vGNETZf_M"
],
[]
] | |
6mxxhl | How were Pre-Colombian Mesoamerican civilizations able to accomplish such sophisticated art and architecture without metal tools? | I had always been taught in school that no civilization in the Americas had reached a bronze age or discovered metal tools at all before the arrival of Europeans. Which was supposedly one of the excuses given for Europeans to consider the natives "inferior". But is this common belief even true? If so, how did the great... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6mxxhl/how_were_precolombian_mesoamerican_civilizations/ | {
"a_id": [
"dk9wqme"
],
"score": [
15
],
"text": [
"Sorry for responding to this so late, my IFTTT alert system seems to be broken. \n\nThe belief that nobody in the Americas had metal tools is incorrect. North Americans in particular had a long history of utilizing copper, notably the so called ... | [] | [] | [
[]
] | |
fuze6 | Can/do objects such as comets travel from one solar system to another? | I mean, given the speeds of these bodies, the relative distance/age of proximate stars, necessary escape velocities and whatever happens in interstellar space, is it possible? And if so, is it incredibly improbable? Or is this one of those things that -- given the size and age of the universe -- has likely occurred a g... | askscience | http://www.reddit.com/r/askscience/comments/fuze6/cando_objects_such_as_comets_travel_from_one/ | {
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9,
10,
4,
4,
3
],
"text": [
"it's possible for objects to achieve escape velocity from their star. but space is very very empty. It could be a very long time before it gets close enough ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Rogue_planet"
],
[
"http://en.wikipedia.org/wiki/Machholz_1",
"http://www.space.com/6184-odd-comet-possibly-star-system.html",
"http://en.wikipedia.org/wiki/Interstellar_comet",
"http://en.wikipedia.org/wiki/Comet#Fate_of_comets"
],
[],
[],
[]
] | |
1wkqfq | how does pope francis differ in any substantive way from his recent predecessors? | There's a lot of rhetoric and he was on the cover of Time magazine and Rolling Stone. But how is he different? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wkqfq/eli5_how_does_pope_francis_differ_in_any/ | {
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3
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"text": [
"Pope Francis has spoken out against the greed culture of capitalism. Since Francis regards himself as one of the poor (he lives a very humble life, without lu... | [] | [] | [
[],
[],
[],
[
"http://www.vatican.va/holy_father/francesco/apost_exhortations/documents/papa-francesco_esortazione-ap_20131124_evangelii-gaudium_en.html"
],
[]
] | |
4t5xik | why do humans value beauty? | The articles I read says it's about us wanting better/healthier mates, yet we also value the beauty of a view, an artwork, or sometimes even a simple flower. Why is it, why do we like beautiful things? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4t5xik/eli5_why_do_humans_value_beauty/ | {
"a_id": [
"d5fax9o"
],
"score": [
2
],
"text": [
"Hey, could be TOTALY wrong here but, I don't think it has anything to do with mating or any of our previous natural instincts. When you see somethin Astheticly pleasing and unique (ie, mountain range, flowers, a face) You're taking in all you've ... | [] | [] | [
[]
] | |
1lp2xd | What is the greatest con or deception in history? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1lp2xd/what_is_the_greatest_con_or_deception_in_history/ | {
"a_id": [
"cc1h8w3"
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"score": [
2
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"text": [
"You may have better luck if you rephrase your question. From the title I thought you were looking for a *Catch Me If You Can* type of con, like a confidence artist would pull. I didn't know about phantom time theory though, and that's much more i... | [] | [] | [
[]
] | ||
1fj25a | How accurate are the historical "facts" and locations in Dan Browns books, such as the davinci code, the lost symbol and Inferno | I just finished reading his newest book inferno and it just struck me as amazing at the history part, and how it all connected together. Are most of his facts true? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1fj25a/how_accurate_are_the_historical_facts_and/ | {
"a_id": [
"caauh1r"
],
"score": [
11
],
"text": [
"Normally, I wold attribute historical inaccuracies in fiction to artistic license, but Dan Brown has made explicit claims that the historical information in his novels are factual, saying in an NBC interview, \"99 percent of it is true. All of t... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Demiurge",
"http://en.wikipedia.org/wiki/Semiotics",
"http://en.wikipedia.org/wiki/Arianism"
]
] | |
1a5bbw | Is the caloric content of a meal more than the sum of its ingredients? | When I cook a meal, does the meal have exactly the same amount of calories as the sum of its original ingredients? Or more/less depending on how the ingredients are combined? | askscience | http://www.reddit.com/r/askscience/comments/1a5bbw/is_the_caloric_content_of_a_meal_more_than_the/ | {
"a_id": [
"c8u9njr"
],
"score": [
16
],
"text": [
"The calories of a meal are **always** less than the sum of the calories of its original ingredients.\n\nCalories are a measure of thermal energy, and as such, they are measured in a bomb calorimeter which combusts food to determine how much ther... | [] | [] | [
[]
] | |
3wy7a4 | Any information on what this is? I found in the back of a photo album | _URL_0_ | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3wy7a4/any_information_on_what_this_is_i_found_in_the/ | {
"a_id": [
"cxzu1qe"
],
"score": [
11
],
"text": [
"Hi!\n\nThe banknote in question is of WWII origin. It is Japanese occupation currency produced for its occupation of the Philippines. \n\nThat was simple enough. What is more interesting is the stamp on the note and the history behind it.\n\n\"T... | [] | [
"http://imgur.com/JhEeSXq"
] | [
[]
] | |
1dcbb3 | Monday Mysteries | Lost (and Found) Treasure | **Previously:**
- [Missing Documents and Texts](_URL_2_)
- [Notable Disappearances](_URL_1_)
**Today:**
The "Monday Mysteries" series will be focused on, well, mysteries -- historical matters that present us with problems of some sort, and not just the usual ones that plague historiography as it is. Situations in wh... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1dcbb3/monday_mysteries_lost_and_found_treasure/ | {
"a_id": [
"cbcol9q",
"c9p023c",
"c9p1b1e",
"c9p2702"
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"score": [
5,
12,
17,
15
],
"text": [
"Not a historian, but I am a cinephile.\n\nThis reminds me of the 1928 silent film by Carl Theodor Dreyer, *The Passion of Joan of Arc* The film itself has long been considered a... | [] | [
"http://www.reddit.com/r/AskHistorians/comments/1cz686/has_a_mythical_creature_ever_turned_out_to_be_real/",
"http://www.reddit.com/r/AskHistorians/comments/1ce73h/monday_mysteries_notable_disappearances/",
"http://www.reddit.com/r/AskHistorians/comments/1cvbaz/monday_mysteries_missing_documents_and_texts/"
] | [
[],
[],
[
"http://upload.wikimedia.org/wikipedia/commons/2/2c/Gold_fish_shaped_vessel_from_the_Oxus_Treasure_by_Nickmard_Khoey.jpg"
],
[
"http://www.britishmuseum.org/explore/highlights/highlight_objects/pe_prb/t/the_hoxne_hoard.aspx",
"http://en.wikipedia.org/wiki/Staffordshire_hoard"
]
] | |
3xcn3p | What happens when a single photon is released and subsequently is absorbed? | Lets say a single photon is released, perhaps it is the last one released from an object as it passes through an event horizon (this is what got me thinking about this). When I think about this photon as a particle, it seems like it will be released in a specific direction, and if something happens to be in that direct... | askscience | https://www.reddit.com/r/askscience/comments/3xcn3p/what_happens_when_a_single_photon_is_released_and/ | {
"a_id": [
"cy3ggh9"
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"score": [
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"text": [
"If it is a single photon, then only one observer can observe it. After the photon is admitted, assuming there are no constraints on its evolution, the photon's wavefunction (think of this as a probability wave) will spread out in all directions.... | [] | [] | [
[]
] | |
2kg709 | How can Pi be infinite without repeating? | Pi never repeats itself. It is also infinite, and contains every single possible combination of numbers. Does that mean that if it does indeed contain every single possible combination of numbers that it will repeat itself, and Pi will be contained within Pi?
It either has to be non-repeating or infinite. It cannot b... | askscience | http://www.reddit.com/r/askscience/comments/2kg709/how_can_pi_be_infinite_without_repeating/ | {
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... | [] | [] | [
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"http://www.reddit.com/r/askscience/comments/2kg709/how_can_pi_be_infinite_without_repeating/cll0jrn",
"http://www.reddit.com/r/askscience/comments/2kg709/how_can_pi_be_infinite_without_repeating/cllb9bx",
"http://www.reddit.com/r/askscience/comments/2kg709/how_can_pi_be_infinite_without_repeating/cll... | |
tn2km | Crash Course on youtube is great fun to watch, and is getting popular. How accurate is the history is presents? | [This](_URL_0_) series has been making the rounds recently, and I've thoroughly enjoyed every episode. That being said, should I be taking some of the actual history presented with a grain of salt? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/tn2km/crash_course_on_youtube_is_great_fun_to_watch_and/ | {
"a_id": [
"c4o0q9d",
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"score": [
2,
12,
6
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"text": [
"It is actual history. Just kind of in a simplified way that is entertaining to teenagers. The guy does it in collaboration with his former history teacher in high school. ",
"I watched about half o... | [] | [
"http://www.youtube.com/watch?v=Yocja_N5s1I"
] | [
[],
[],
[]
] | |
7y2pzn | The Ottoman Empire conscripted young Christian boys in their empire to become Janissaries, did they conscripted young Christian girls into their harems? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7y2pzn/the_ottoman_empire_conscripted_young_christian/ | {
"a_id": [
"dufz7ki",
"dugp2te"
],
"score": [
2,
2
],
"text": [
"The Devshirme was specifically aimed the Christian populations in the Sultan's European provinces. Its only purpose was to recruit soldiers for the Janissary and the brighter ones became parts of the administration. Girls ... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/comments/4utqql/where_did_ruxelana_aka_hurrem_sultan_come_from/"
]
] | ||
2h9seq | Is it possible that a vacuum metastability event already happened before in our universe? Would we theoretically be able to detect if it had? | askscience | http://www.reddit.com/r/askscience/comments/2h9seq/is_it_possible_that_a_vacuum_metastability_event/ | {
"a_id": [
"ckqpsrq"
],
"score": [
7
],
"text": [
"Something similar is thought to have happened when the universe cooled to the point where the electroweak interaction became the electromagnetic and weak interactions. There was a bubble region which rapidly expanded. You won't find much non-scho... | [] | [] | [
[
"http://www.staff.science.uu.nl/~proko101/DoruSticlet_pt2.pdf"
]
] | ||
1k58ee | please explain some american politics to a canadian | Why does the USA only have two successful parties, and why do third parties have such a hard time breaking into the political game? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1k58ee/please_explain_some_american_politics_to_a/ | {
"a_id": [
"cblhuof",
"cblif1n"
],
"score": [
2,
3
],
"text": [
"Because at this point nobody is willing to \"waste\" their vote on a fringe party that will never get the votes to win. Everyone complains about the lack of viable choices but nobody will step up with their vote to give the... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=s7tWHJfhiyo"
]
] | |
3sutun | Where did the Indo-European culture originate? | I read somewhere that evidence suggest Central Asia or the Balkans. Any pointers on where to find it? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3sutun/where_did_the_indoeuropean_culture_originate/ | {
"a_id": [
"cx1gbe6"
],
"score": [
2
],
"text": [
"/r/Anthropology question, maybe? Not to discourage discussion, of course."
]
} | [] | [] | [
[]
] | |
5dy0gd | how and why does water drain clockwise south of the equator, counter clockwise north of the equator and straight down on the equator? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5dy0gd/eli5_how_and_why_does_water_drain_clockwise_south/ | {
"a_id": [
"da84sod",
"da854um"
],
"score": [
15,
4
],
"text": [
"Sorry to break it to you, but this doesn't actually occur. The direction the water goes down the plug is really just to do with how the water was already moving before the plug was removed. ",
"Generally, it doesn't. Or... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=ihv4f7VMeJw"
]
] | ||
1b5ulu | Was the power-producing potential of Nuclear technology discovered/explored when the first atomic bombs were invented? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1b5ulu/was_the_powerproducing_potential_of_nuclear/ | {
"a_id": [
"c93w6wd",
"c93wps7"
],
"score": [
3,
3
],
"text": [
"Hyman Rickover started the program to develop a nuclear power plant for ship propulsion in 1948. There was theoretical work before that, but the practical engineering program to develop a nuclear... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Chicago_Pile-1"
]
] | ||
9ypbs6 | It's easy to grasp the technological differences between now and a thousand years ago, but how different was technology in the years 500 and 1500 in Western Europe? | I'm only familiar with technological history from about 100-200 years ago, so I don't know how much daily life changed before that. I want to know if there was a massive leap in quality of life, or if there wasn't much difference at all. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9ypbs6/its_easy_to_grasp_the_technological_differences/ | {
"a_id": [
"ea54vpj",
"ea5jv2v"
],
"score": [
44,
36
],
"text": [
"This is a very broad question, so I will focus on my own area of expertise, namely swords and duelling, which touches on broader technological topics like armour and metalworking.\n\nThe western European metallurgy of 500 ... | [] | [] | [
[],
[]
] | |
3e1gh2 | How was it, despite all the domestic strife, that French Revolutionary era France was able to fight off invasions on all its borders by the other European powers? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3e1gh2/how_was_it_despite_all_the_domestic_strife_that/ | {
"a_id": [
"ctattls"
],
"score": [
4
],
"text": [
"\"From this moment until such time as its enemies shall have been driven from the soil of the Republic, all Frenchmen are in permanent requisition for the services of the armies. The young men shall fight; the married men shall forge arms and tra... | [] | [] | [
[]
] |
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