q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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33fp3v | what's going on in my body when it suddenly decides to tell me i'm super hungry? | Five minutes ago I wasn't thinking about food. Now I feel like I could eat an obscene amount of noodles.
What's that feeling in our stomach that we instantly recognize as hunger? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33fp3v/eli5_whats_going_on_in_my_body_when_it_suddenly/ | {
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"Basicly, there's a part of your brain, called Hypothalamus, that observes the bloodsugar level in your blood. And when it gets low, it sends out signals to other parts of your brain to find food.\n\n\nThe other way around, it also notices when yo... | [] | [] | [
[]
] | |
9lv64p | Why is wireless charging so inefficient? | askscience | https://www.reddit.com/r/askscience/comments/9lv64p/why_is_wireless_charging_so_inefficient/ | {
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"text": [
"Because we don't control the way the energy propagates from the source. It just does so according to the rigid laws of EM. \n\nThe simplest example of the phenomena is to take a flash light and shine it at a wall up close and notice how intense ... | [] | [] | [
[]
] | ||
2n2djd | why do we elevate a sprained ankle? isn't blood good for it? why should we be draining it away from the injury (if that's the point)? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2n2djd/eli5_why_do_we_elevate_a_sprained_ankle_isnt/ | {
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"Good question. Also makes me wonder about anti inflamatory medicine.. Isn't inflamation a part of the healing process?..",
"Blood is good for it, but the amount of blood that causes the swelling isn... | [] | [] | [
[],
[],
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] | ||
agn62d | Why did the Pope move to Avignon? | I'm reading up a bit on the Mercenaries in Italy in the late 1300's, and the book was mentioning one of the reasons the mercenaries were there is because earlier they took Avignon and the pope hostage, and afterwards the pope hired them to go into Italy to fight the city states. I know this is a hugely simplified story... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/agn62d/why_did_the_pope_move_to_avignon/ | {
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"text": [
"‘Ubi papa, ibi roma (Rome is where the Pope is)’: This is a famous quote from the word of one of the Avignon Popes, Urban V (r. 1362-70). Nevertheless, this passage can actually imply several aspects of the Papacy during this period as well as it... | [] | [] | [
[]
] | |
5bvkcb | How did soldiers in WW1 stay so motivated? | I know there has been mutinies, but most of the time, conscripts were pretty much loyal to their superiors. Considering the horrible conditions of war and extreme likelihood of death or permanent injury, how didn't people uprise against their states in mass numbers to end this war about dying nothing? What would they e... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5bvkcb/how_did_soldiers_in_ww1_stay_so_motivated/ | {
"a_id": [
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"* [What was the motivation for the continuation of the bloody back and forth fighting of WW1 on the Western Front? Why couldn't they just stay in the trenches and just defend rather than attack again and again?] (_URL_6_)\n* [How did soldiers, ge... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3e1mr0/what_was_the_public_reaction_during_the_first/",
"https://www.reddit.com/r/AskHistorians/comments/58seo1/which_one_had_a_higher_weekly_casualty_ratewwi/",
"https://www.reddit.com/r/AskHistorians/comments/47ql41/an_often_said_slogan_about_the_grea... | |
29xk3g | is there an evolutionary reason people think "the good old days" were better? | People seem to think the past was overall better than the present, despite all evidence to the contrary. Is there an evolutionary reason this attitude is so prevalent? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/29xk3g/eli5_is_there_an_evolutionary_reason_people_think/ | {
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"text": [
"there are hundreds of studies in this area. as a whole it comes down to one thing, change. change is not received well by humans because change takes us out of our comfort zones. t... | [] | [] | [
[],
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] | |
ez23y3 | how did banks greatly contribute/ cause to the great recession in the 2000’s? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ez23y3/eli5_how_did_banks_greatly_contribute_cause_to/ | {
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"They made a lot of very bad lending decisions. They gave people money in exchange for pieces of paper saying they... | [] | [] | [
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17sxce | What were the major problems which held back the development of
the French economy in the late 1700s?
| I'm currently studying year 12 history, focusing on France's revolutionary period and I am completely lost. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/17sxce/what_were_the_major_problems_which_held_back_the/ | {
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"text": [
"It's important to note geographical bad luck meant it lacked the plentiful and easily accessible coal, iron,etc that allowed Britain to industrialise. It then entered the Eden Treaty with Britain which lowered import duties on British manufacture... | [] | [] | [
[]
] | |
cm4cqp | why do some diseases kill so quickly? wouldn’t it be more advantageous to be super slow and stealthy so you can get the biggest bang for your buck out of your host? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cm4cqp/eli5_why_do_some_diseases_kill_so_quickly_wouldnt/ | {
"a_id": [
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"text": [
"The majority of those diseases - often called plagues - are not natural to humans. They're diseases that have jumped the species gap from some other species to humans.\n\nWhat's the equivalent of a cold to an animal may be far more lethal to the... | [] | [] | [
[]
] | |
f16jan | how does a long exposure picture (10 plus hours) of other galaxies work when the earth in constantly spinning? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f16jan/eli5_how_does_a_long_exposure_picture_10_plus/ | {
"a_id": [
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"text": [
"Normally the telescope/camera is attached to a motorised tracking device/\"tripod\" which ensures the object being photographed remains in the centre of the image.",
"There are two common ways of doing this.\n\nThe trad... | [] | [] | [
[],
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4w5unk | Why does Zinc only rust on the outer layer while iron rust all the way through? | askscience | https://www.reddit.com/r/askscience/comments/4w5unk/why_does_zinc_only_rust_on_the_outer_layer_while/ | {
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"text": [
"The product of the corrosion (zinc oxide) forms a protective layer preventing further oxidation of the zinc, whereas the iron oxides which are a result of iron rusting are fragile and flaky and don't form a protective layer... | [] | [] | [
[],
[]
] | ||
8ohvee | why is it that butterflies don't need to learn how to fly ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8ohvee/eli5_why_is_it_that_butterflies_dont_need_to/ | {
"a_id": [
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"text": [
"They are little pre-programmed organic machines. Just as spiders don’t have to learn how to weave a web, and crickets don’t have to learn to chirp. \n\nLower level insects are reacting to stimuli and running their software l... | [] | [] | [
[],
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] | ||
1mzywl | What would the uniform of a British officer in the North American frontier have looked like between 1750-say 1800? | I'm mostly curious about any differences between the standard uniforms of the British military of the time and what might have been worn along the Western frontier of British influence at the time. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1mzywl/what_would_the_uniform_of_a_british_officer_in/ | {
"a_id": [
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"score": [
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"text": [
"British regulars wore uniforms that were similar to the ones worn by General Thomas Gague's troops when the assaulted Bunker Hill. During the French and Indian wars, General Braddock and Genera... | [] | [] | [
[
"http://usarmy.vo.llnwd.net/e2/c/images/2012/06/13/251411/original.jpg"
],
[
"http://ichef.bbci.co.uk/arts/yourpaintings/images/paintings/brhm/large/es_brhm_bns_041_014a_large.jpg",
"http://ichef.bbci.co.uk/arts/yourpaintings/images/paintings/rwfm/large/nwm_rwfm_466_large.jpg",
"http://ichef.b... | |
3qd7y9 | how should i interpret the new finding "processed meat has been linked to an 18% increased risk for colon cancer"? | Does this mean that I'm 20% more likely to get colon cancer than someone who does not eat processed meat? Or does it mean my risk of colon cancer (~3%) has increased 18% (to ~3.6%)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qd7y9/eli5_how_should_i_interpret_the_new_finding/ | {
"a_id": [
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"text": [
"According to BBC, it's the latter: \n \n > In the UK, around **six out of every 100** people get bowel cancer at some point in their lives. \nIf they were all had an extra 50g of bacon a day for the... | [] | [] | [
[],
[],
[
"http://www.vox.com/2015/10/26/9617928/iarc-cancer-risk-carcinogenic"
]
] | |
3apm8u | why spanking your children is becoming less accepted by society. | My parents tell me all the time they got beat with a belt, a paddle, a stick, just about anything laying around for punishment, but most parents don't spank their kids at all anymore. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3apm8u/eli5_why_spanking_your_children_is_becoming_less/ | {
"a_id": [
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"text": [
"It's illegal to beat anyone, why would it be legal to beat your child?\n\nAlso it's a bad tool to actually instruct your child with. Think about it like this, 2 children join their parents for a birthday party. Both kids mis... | [] | [] | [
[],
[]
] | |
1ye2as | How were teen pop idols such as Elvis Presley or The Beatles perceived among male teens? | I am a huge fan of both and you always hear of the admiration coming from young teen girls. But how were they perceived among men? Was it similar to the way Justin Bieber is very unpopular with men? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ye2as/how_were_teen_pop_idols_such_as_elvis_presley_or/ | {
"a_id": [
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"score": [
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84
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"text": [
"Apparently the French boys loved the Beatles even more than the girls did. \n\n > Ringo recalled, “These boys chased us all over Paris. Before, we'd been more used to girls. The audience was a roar instead of a scream; it... | [] | [] | [
[
"http://www.triumphpc.com/mersey-beat/beatles/beatles-paris4.shtml"
],
[
"http://user.pa.net/~ejjeff/pie.html"
]
] | |
28lc2r | Pre-settlement North America for dummies. | I am looking for a book on native American culture before European settlement. Something moderately basic preferably, as my knowledge of anything native American is practically nil, so I need something that can make a good jumping off point.
Thanks for the help. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/28lc2r/presettlement_north_america_for_dummies/ | {
"a_id": [
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"score": [
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"text": [
"If you're interested in the Amerindians (natives of both North and South America, sans Inuits and a few others) rather than strictly North America, then I'd recommend Charles C. Mann's \"1491: New Revelations of the Americas... | [] | [] | [
[],
[
"http://www.reddit.com/r/AskHistorians/wiki/books/americas#wiki_pre-columbian",
"http://www.reddit.com/r/AskHistorians/wiki/books/americas#wiki_pre-columbian2"
]
] | |
m8k9u | game engines | I'm interested in game engines, how they work and what they do. Specifically the graphics engine, but I assume that they bear some similarity to one another. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/m8k9u/eli5_game_engines/ | {
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... | [] | [] | [
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"http://i.imgur.com/I1t2N.gif",
"http://en.wikipedia.org/wiki/Unreal_Engine",
"http://unity3d.com/",
"http://en.wikipedia.org/wiki/List_of_Unreal_Engine_games"
],
... | |
3pzxht | Why did Iberian colonization typically involve interbreeding with/integrating the natives, while British colonization typically involved displacing natives? | In South America and the Philippines, which were areas of Spanish/Portuguese colonization, the population is typically partially or fully native yet semi-integrated into Iberian culture (they are usually Catholic and usually speak Spanish/Portuguese).
In areas of British colonization such as New Zealand/Australia/US/C... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3pzxht/why_did_iberian_colonization_typically_involve/ | {
"a_id": [
"cwb1yp1",
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"score": [
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2
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"text": [
"While someone else with deeper knowledge on this issue comes, I can answer one of your questions:\n\n > Was there less stigma on having children with the native people in Spanish colonies?\n\nWe have to distinguish between *... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Casta"
],
[]
] | |
9dcy4u | Why doesn't atoms nuclei collapse? | I'm not talking about the reason electrons don't crash into the atom nucleus.
The question I'm asking is, if the strong nuclear force is that much stronger than the electromagnetic force at the distances of a atom nucleus, why does it have a radius? | askscience | https://www.reddit.com/r/askscience/comments/9dcy4u/why_doesnt_atoms_nuclei_collapse/ | {
"a_id": [
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"text": [
" > The question I'm asking is, if the strong nuclear force is that much stronger than the electromagnetic force at the distances of a atom nucleus, why does it have a radius?\n\nIt's the same thing as will the atom. Nucleon... | [] | [] | [
[],
[]
] | |
6dx3u8 | the restoring internet freedom act | What's in it? Intended consequences? Unintended consequences? Why do some senators argue it's good when most people seem to agree that it's bad? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6dx3u8/eli5_the_restoring_internet_freedom_act/ | {
"a_id": [
"di61lkt"
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"score": [
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"text": [
"Restoring Internet Freedom Act. This bill nullifies the rule adopted by the Federal Communications Commission (FCC) on February 26, 2015, relating to the reclassification of broadband Internet access service as a telecommunications service.\n\n_U... | [] | [] | [
[
"https://www.congress.gov/bill/114th-congress/senate-bill/2602",
"https://www.bing.com/search?q=The+Restoring+Internet+Freedom+Act&qs=n&form=QBLH&sp=-1&pq=the+restoring+internet+freedom+act&sc=2-34&sk=&cvid=D7FF57CE442A4035AAFEE3F6BA99FE2E"
]
] | |
78rk06 | Can satellites be in geostationary orbit at places other than the equator? Assuming it was feasible, could you have a space elevator hovering above NYC? | 'Feasible' meaning the necessary building materials, etc. were available, would the physics work? (I know very little about physics fwiw) | askscience | https://www.reddit.com/r/askscience/comments/78rk06/can_satellites_be_in_geostationary_orbit_at/ | {
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"https://pure.strath.ac.uk/portal/files/67305638/strathprints018865.pdf",
"http://eprints.gla.ac.uk/68858/"... | |
2z1gyy | how do ocean creatures survive such great depths, 2500m plus while even our steel submarines are completely crushed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2z1gyy/eli5_how_do_ocean_creatures_survive_such_great/ | {
"a_id": [
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"text": [
"they are at that pressure through and through, while a sub is keeping an artificial pressure.",
"Because organic creatures (including humans) are mostly made of water, and water can't compress.\n\nSubmarines have a press... | [] | [] | [
[],
[]
] | ||
7op5xk | why do different items usually have the same shipping price even if they're completely different in size, weight, shape, etc? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7op5xk/eli5_why_do_different_items_usually_have_the_same/ | {
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"text": [
"Amazon takes a loss leader position when it comes to shipping. In basic terms, they take the hit on shipping in order to sell you and I more stuff.",
"One reason is that the sh... | [] | [] | [
[],
[],
[],
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] | ||
5epdoo | Why doesn't Raoult's Law depend on the chemical nature of solute? | According to Raoult's Law, dissolving a solute into a solvent decreases the saturation vapor pressure. Being a colligative property, it doesn't matter what the chemical nature of the solute is, only how much there is.
However we know that things like melting point and saturation vapor pressure (and by extension boilin... | askscience | https://www.reddit.com/r/askscience/comments/5epdoo/why_doesnt_raoults_law_depend_on_the_chemical/ | {
"a_id": [
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"score": [
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3
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"text": [
"I think the issue here is it is not actually a \"Law\", it only holds in the case of weak interactions. [Real solutions can deviate from these laws.](_URL_0_)",
"Raoult's law is an approximation assuming an ideal soluti... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Raoult's_law#Real_solutions"
],
[
"http://images.tutorvista.com/cms/images/38/raoults-law-for-pure-solvent.png"
]
] | |
83fk38 | why is it that you hear about so many new amazing materials / inventions but you rarely see them being used or sold? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/83fk38/eli5_why_is_it_that_you_hear_about_so_many_new/ | {
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"text": [
"A lot of the time these inventions or new “breakthroughs” are sensationalized before they ever even get adequate testing. It’s not uncommon for articles to report on something a... | [] | [] | [
[],
[],
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4jeq8x | why does stroking (many times) my disposable razor over denim/jeans make it sharpen again? | It works, it is a tip I got from the internet, but how? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4jeq8x/eli5_why_does_stroking_many_times_my_disposable/ | {
"a_id": [
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"text": [
"There are three possibilities:\n\n1) The effect is purely psychological.\n\n2) Rubbing it on your jeans is cleaning out little bits of hair, skin and soap that were clogging it.\n\n3) You are stropping it. \n\nIf a blade (either a razor or a knif... | [] | [] | [
[
"https://www.youtube.com/watch?v=SBn1i9YqN1k"
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] | |
4y177b | why does a pitch that is slightly flat sound better than one that is slightly sharp? | What makes a flat sounding pitch more forgiving than a sharp sounding pitch. If one of my guitar strings is tuned slightly flat for example, it's not quite as harsh as one that is tuned sharply. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4y177b/eli5_why_does_a_pitch_that_is_slightly_flat_sound/ | {
"a_id": [
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"score": [
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"text": [
"I think that may be your opinion because flat sounds way worse to me than sharp. Can't say for sure though "
]
} | [] | [] | [
[]
] | |
774lu6 | why is titanium flammable? | Specifically titanium shavings | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/774lu6/eli5_why_is_titanium_flammable/ | {
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3
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"text": [
"The oxidation of titanium gives off heat. When the titanium heats up, this reaction proceeds faster and faster. This produces a fire, one that is quite difficult to stop. \n\nAs for why shavings and po... | [] | [] | [
[],
[],
[]
] | |
65c5p2 | why do hackers want to use linux os even though it's easier to use windows or mac os? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/65c5p2/eli5why_do_hackers_want_to_use_linux_os_even/ | {
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2
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"text": [
"Once they get through the learning curve it is easier to use linux. Besides, linux is free. The other two will cost eventually. ",
"Linux is generally far more customisable and it's far easier to ch... | [] | [] | [
[],
[],
[]
] | ||
a4km42 | How did some ancient sites survive as tourist sites? | For example, the Romans used the Colosseum as an entertainment place. At which point did they decide to " You know what? We will just abandon this building and not demolish it so people hundreds of years from now could visit it as a tourist destination".
An how did pagan temples (Ancient Egyptian, Hellenic and so) sur... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a4km42/how_did_some_ancient_sites_survive_as_tourist/ | {
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"text": [
"Mostly because they were given another use. \n\nFor example, the pantheon in Rome was made into a Christian church and the Parthenon in Athens had various uses over the centuries, including as ammunition storage by the Ottoman Empire, which led t... | [] | [] | [
[]
] | |
1bd47b | What was the largest migration in human history? | I had always thought that it would have been something like the major migrations which led to the fall (of the western half) of the Roman Empire. Something which keeps being talked about in that context is the Chinese pushing one group west which pushed another, etc, until you get the Huns and Goth, and Vandals pushed ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1bd47b/what_was_the_largest_migration_in_human_history/ | {
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"text": [
"In terms of sheer numbers per year, Stalin's post-ww2 forced deportations and migrations of various eastern european populations have to be close to the top. Exact numbers are de... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Partition_of_India"
],
[],
[
"https://en.wikipedia.org/wiki/Great_Migration_%28African_American%29"
]
] | |
1um1eq | Are quarks really the smallest "form" of matter, or is that just the assumption since we can't effectively see what could be inside of them? | Also, are there any accepted theories out there stating that quarks are also made up of smaller pieces? Is it possible that there are simply no fundamental forms of matter? If that is possible, what would it imply? This stuff fascinates me and I'd greatly appreciate any insight. | askscience | http://www.reddit.com/r/askscience/comments/1um1eq/are_quarks_really_the_smallest_form_of_matter_or/ | {
"a_id": [
"cejh2f3"
],
"score": [
27
],
"text": [
"Quarks are almost certainly indivisible, and here's why.\n\nThe uncertainty principle states that the product of the uncertainty in an objects position and in that objects momentum must be larger than a certain value. This has nothing to do wit... | [] | [] | [
[]
] | |
1xpn0i | Diphenhydramine(Benadryl) is most known as an allergy pill, but it's also a cough suppressant, anti-vomiting/nausea, sedative, local anesthetic, anti-OCD, etc. How does this work? | [Wikipedia says that Diphenhydramine](_URL_4_) is:
* An [antihistamine](_URL_7_) (inhibits histamine, used as an allergy treatment)
* An [anticholinergic](_URL_5_) (treats some symptoms dealing with smooth muscles in the GI tract, urinary tract, lungs, etc)
* An [antitussive](_URL_2_) (cough suppressant)
* An [antieme... | askscience | http://www.reddit.com/r/askscience/comments/1xpn0i/diphenhydraminebenadryl_is_most_known_as_an/ | {
"a_id": [
"cfdjfg3",
"cfdpprp"
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"score": [
2,
3
],
"text": [
"Just because a drug can be used to treat a condition doesn't mean that it does it well, nor does it mean that the adverse effects of the drug outweigh the benefit it may or may not produce. Broad, non-specific drugs tend to ... | [] | [
"https://en.wikipedia.org/wiki/Diphenhydramine#Mechanism_of_action",
"https://en.wikipedia.org/wiki/Acetylcholine",
"https://en.wikipedia.org/wiki/Antitussive",
"https://en.wikipedia.org/wiki/Extrapyramidal_symptoms",
"https://en.wikipedia.org/wiki/Diphenhydramine",
"https://en.wikipedia.org/wiki/Antichol... | [
[],
[
"http://en.wikipedia.org/wiki/H1_antagonist#First-generation_.28non-selective.2C_classical.29",
"http://en.wikipedia.org/wiki/Phenothiazine",
"http://en.wikipedia.org/wiki/Compazine",
"http://en.wikipedia.org/wiki/Stelazine"
]
] | |
25i0mc | Can things spin in space with force coming from just one point? | My friends and I were arguing about this. If I had a flagpole in zero gravity, and I applied force moving perpendicularly to the pole to one end of it (as if a car ran into the base of the flagpole), would it spin about its center or would the whole pole just move in the same direction as the force?
Thanks, I just don... | askscience | http://www.reddit.com/r/askscience/comments/25i0mc/can_things_spin_in_space_with_force_coming_from/ | {
"a_id": [
"chhfx36"
],
"score": [
4
],
"text": [
"You're both right and both wrong. The resulting motion will be composed of a translation *and* a rotation. How much of each depends on the details. If you're comfortable with conservation of linear and angular momentum, you can approach it as ... | [] | [] | [
[]
] | |
1syra3 | Were wild cats selectively bred by humans to give us our current day house cat? | I understand that over thousands of years genetic aberrations in wolves were selectively bred to give us our current day domesticated dogs, but was there a similar genetic modification through selection that was used on wildcats? | askscience | http://www.reddit.com/r/askscience/comments/1syra3/were_wild_cats_selectively_bred_by_humans_to_give/ | {
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"text": [
"I suspect that dogs and cats were rather similar in their early domestication in that _neither_ was directly selectively bred by humans. It's thought that the wolf ancestors of d... | [] | [] | [
[],
[],
[],
[]
] | |
aagchp | Will the hydrophobic wooden ball sink? | If a wooden ball is covered with a hydrophobic coating and thrown into a water, a layer of air forms around it, it drowns (if it falls as through it was done in the air), or it remains on the water surface? Sorry for bad English. | askscience | https://www.reddit.com/r/askscience/comments/aagchp/will_the_hydrophobic_wooden_ball_sink/ | {
"a_id": [
"ect2o7x"
],
"score": [
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],
"text": [
"It will sink if it's denser than water, it will float otherwise, just as if it didn't have a hydrophobic coating. The buoyancy force on the ball depends on the amount of water displaced by the ball, and if that's higher than the gravitational for... | [] | [] | [
[]
] | |
jh5rh | If all movement is relative, is there a cosmic constant zero angular velocity? | I'm a layperson when it comes to physics, so bear with me. One of the things hammered into my head in physics class is that all motion is relative to whatever reference frame you happen to be using. But why, then, do we feel centrifugal force if we're spinning around an object, but not if that object is spinning and we... | askscience | http://www.reddit.com/r/askscience/comments/jh5rh/if_all_movement_is_relative_is_there_a_cosmic/ | {
"a_id": [
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"score": [
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5,
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"text": [
"(Not a physicist) Because one thing is inertial motion, and another thing is *accelerated* motion. Inertial motion is completely reative... | [] | [] | [
[],
[],
[
"http://arxiv.org/abs/gr-qc/9607009"
],
[],
[],
[
"http://arxiv.org/abs/gr-qc/9607009"
]
] | |
84enec | Is it true US, French and British forces fought in the Russian civil war? | I’ve read they their troops to help the tsar, how much truth is there to this? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/84enec/is_it_true_us_french_and_british_forces_fought_in/ | {
"a_id": [
"dvpdi2o"
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"score": [
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"text": [
"Please check out my earlier answer on this topic. There is always more to be said though, so feel free to ask if there's anything it does not cover. But in general I will mention that they did not send troops to send the Tsar (who had long since ... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/6y7qtx/why_did_the_us_send_troops_into_russia_during_the/",
"https://www.reddit.com/r/AskHistorians/comments/7rz6k0/how_come_the_reds_won_the_russian_civil_war_while/_"
]
] | |
9lbvpy | why does one full rotation equal 360°? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9lbvpy/eli5_why_does_one_full_rotation_equal_360/ | {
"a_id": [
"e75ftce",
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"score": [
4,
5,
23
],
"text": [
"The metric system recommends using radians and not degrees. The math always works much better in radians. You can seamlessly switch back and forth between exponential, power-series and trigonometric ... | [] | [] | [
[],
[],
[]
] | ||
ah1vn1 | mood swings due to hormones (like contraception or pms) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ah1vn1/eli5_mood_swings_due_to_hormones_like/ | {
"a_id": [
"eeartii",
"eeatxak"
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"score": [
3,
2
],
"text": [
"Hormones produced by the ovaries act as powerful neurotransmitters. When the amount you have in the body changes, it can affect your mood because it affects your brain.",
".\n\nhormones are signaling things, ant they eff... | [] | [] | [
[],
[]
] | ||
5kains | Why does hair loss always begin from the top region of the head? | Why does pattern hair loss in men particularly seems to always start from the same region, top of the head, and never from the sides? | askscience | https://www.reddit.com/r/askscience/comments/5kains/why_does_hair_loss_always_begin_from_the_top/ | {
"a_id": [
"dbn15dc"
],
"score": [
3
],
"text": [
"I answered a very similar question a few days ago:\n_URL_0_\n\nIt has to do with varying levels of DHT sensitivity in different follicles of the scalp. Also, some men begin with the balding starting at the temples, which is how receding hairline... | [] | [] | [
[
"https://www.reddit.com/r/askscience/comments/5j3klc/why_do_bald_men_and_perhaps_women_maintain_a_ring/?st=IX5TMPM7&sh=405317a6"
]
] | |
21bypx | In the Middle Ages, where there any roguish adventurer-types like movies and games? | You all know the type. The hardy traveler with nothing but a sword at his side and the clothes on his back, wandering the world in search of adventure, battling evil-doers with his trusty steed. Now while I assume it's safe to say that there weren't many fair maidens being rescued from tall towers or dragons being slai... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/21bypx/in_the_middle_ages_where_there_any_roguish/ | {
"a_id": [
"cgbq9pq"
],
"score": [
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],
"text": [
"The idea of these types of heroes certainly existed by the 1600s, since Don Quixote was written (in 1605) to mock the chivalric novels that were popular at that time. In a way, Odysseus is also the same type of character, albeit travelling on a s... | [] | [] | [
[]
] | |
smk6y | why small smudges/scratches wreak havoc on audio cd's, but don't seem to affect data and game cd's. | it seems logical to me that a smudge should be able to halt a game install for example, but rarely ever does. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/smk6y/eli5_why_small_smudgesscratches_wreak_havoc_on/ | {
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113,
85,
12,
4
],
"text": [
"As a follow-up question, why can a CD that's stratched to shit and unable to play on any CD player be imported at perfect quality onto my PC / console?",... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Cross-interleaved_Reed-Solomon_coding"
],
[
"http://www.youtube.com/watch?v=sPFWfAxIiwg"
],
[]
] | |
4pfvdo | Has the increased workforce participation of women reduced wages? | Since the 1960s, the percentage of women who work has increased, increasing the size of the workforce. Has this reduced wages?
The only thing I have been able to find on the internet is in /r/theredpill so it's not an unbiased source.
| askscience | https://www.reddit.com/r/askscience/comments/4pfvdo/has_the_increased_workforce_participation_of/ | {
"a_id": [
"d4l9ca8"
],
"score": [
6
],
"text": [
"It certainly doesn't appear that way. [Here](_URL_1_) is the real median personal income, which has been rising since the 1980s, as has [the humber of dual income householda] (_URL_4_) and the % of [the workforce made up of women](_URL_3_). Furt... | [] | [] | [
[
"https://en.m.wikipedia.org/wiki/Lump_of_labour_fallacy",
"https://fred.stlouisfed.org/series/MEPAINUSA672N",
"http://4.bp.blogspot.com/-JlRZTNjlbGs/UMFdMBgMgpI/AAAAAAAAG_I/VbEA9h2QJCI/s1600/a1-us-individuals-real-median-income-by-sex-with-recessions-1947-2010.png",
"https://www.dol.gov/wb/stats/C... | |
38m2l7 | Why does the label on my MSG say it has 0% protein? | I understand that glutamic acid is not technically a protein since it's a single amino acid, but from a nutritional standpoint, shouldn't that not matter? | askscience | http://www.reddit.com/r/askscience/comments/38m2l7/why_does_the_label_on_my_msg_say_it_has_0_protein/ | {
"a_id": [
"crw1wgs"
],
"score": [
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],
"text": [
"Nutrition labels are mandated by law. Like when you buy a bottled water, the nutrition label tells you that it has 0% everything. The deinition of what's protein and what's not is determined by the FDA (in America). \n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.fda.gov/Food/GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/LabelingNutrition/ucm2006828.htm"
]
] | |
3ibn42 | When a material is cut or broken, where exactly is the separation happening? | Does the break happen at a molecular level or is it at a larger scale? I know the atoms aren't spring but do molecules break apart? | askscience | http://www.reddit.com/r/askscience/comments/3ibn42/when_a_material_is_cut_or_broken_where_exactly_is/ | {
"a_id": [
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"text": [
"Depends on material:\n\n\nWhen you break ice, you break the Van der waals bonds between molecules.\n\n\nWhen you break a metal, the metal is all atoms bound by metalic bonds so you break metal to metal bonds.\n\n\nIn some c... | [] | [] | [
[],
[]
] | |
365u14 | Is the influence of the Roman Empire overstated in Western culture when compared to other ancient civilizations like the Chinese or the Persians? | I know Rome is seen as the first time the West really rose to prominence and it has much to do with the current culture, but I am thinking in global terms here. When compared to other great empires how do they really measure up? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/365u14/is_the_influence_of_the_roman_empire_overstated/ | {
"a_id": [
"crb1jui",
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"score": [
7,
5
],
"text": [
"Influence on what, exactly? It's hard deny its influence on European civilization, if anything because of thr sheer amount later people intentionally identifiyng with the Greco-Roman tradition. Any influence on a larger scal... | [] | [] | [
[],
[]
] | |
ix2m6 | My bottle of bleach claims to kill 99.9% of all household germs. | My bottle of bleach claims to kill 99.9% of all household germs. What is the .1% of germs that are not killed with bleach? | askscience | http://www.reddit.com/r/askscience/comments/ix2m6/my_bottle_of_bleach_claims_to_kill_999_of_all/ | {
"a_id": [
"c27bnto",
"c27bztf"
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"score": [
2,
5
],
"text": [
"It's probably a marketing thing. If they said \"Kills 100% of all household germs\" and someone ran tests and found just one germ cell alive, the bleach manufacturer could be sued into oblivion. \n\nThe '99.9%' gives them an... | [] | [] | [
[],
[
"http://www.clorox.com/products/clorox-regular-bleach/faq/",
"http://www.epa.gov/oppad001/ad_info.htm",
"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2957119/"
]
] | |
9t0bpx | how does one navigate buying an engagement ring with so many industry pitfalls? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9t0bpx/eli5_how_does_one_navigate_buying_an_engagement/ | {
"a_id": [
"e8soluj",
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"score": [
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2,
2
],
"text": [
"I found a jeweler that was referred to me that wasn’t a national brand. They spent time teaching me about diamonds and how they’re graded and what you can expect for the price you’re paying. \n\nI ende... | [] | [] | [
[],
[],
[]
] | ||
13m617 | Why do we care so much about the facial structures of our mates? | From an evolutionary standpoint, why do we see some faces as pleasant looking and want to be with those people? | askscience | http://www.reddit.com/r/askscience/comments/13m617/why_do_we_care_so_much_about_the_facial/ | {
"a_id": [
"c755k06",
"c756yz5",
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"score": [
39,
20,
6
],
"text": [
"To make it clearer, I think what the OP is trying to say is that facial features don't seem to provide any obvious evolutionary advantages, unlike the rest of our body. So we're selecting for an arbit... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Facial_symmetry",
"http://cdp.sagepub.com/content/11/5/154.short",
"http://www.ehbonline.org/article/S1090-5138(03)00036-9/abstract"
],
[]
] | |
5ql46v | how exactly do the different settings on dryers (i.e. "permanent press") affect clothes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ql46v/eli5_how_exactly_do_the_different_settings_on/ | {
"a_id": [
"dd0bauq",
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"score": [
22,
6,
40
],
"text": [
"The heat output is anything from very hot air (whites) to completely unheated air (air dry). Certain fabrics will shrink with too much heat, and colors will fade. ",
"Lower heat and slower tumble.... | [] | [] | [
[],
[],
[
"http://www.sears.com/articles/appliances/washers-dryers/what-is-the-permanent-press-cycle-on-a-washer-or-dryer.html"
]
] | ||
a7lrpq | why is thermal clothing warm? | Is the fabric different from other clothes? Or is it the way it is made? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a7lrpq/eli5_why_is_thermal_clothing_warm/ | {
"a_id": [
"ec3yj7x"
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"score": [
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"text": [
"People are walking, talking heat generators. Normally, this heat gets lost into the air and spread out across the Earth. Thermal clothing is designed to trap pockets of air so when you heat it up, rather than blowing away to be replaced by cooler... | [] | [] | [
[]
] | |
gf3xu | Can someone help me understand the relationship between mathematical models and not yet observed things / events? | Preface: I’m crappy at math. But I’m sure that’s already assumed.
OK, so a lot of things or events are predicted to exist / happen, based on various theoretical models. These complex theoretical models evolve slowly over time, getting continuously refined with experimentation and other data. So what’s predicted has pr... | askscience | http://www.reddit.com/r/askscience/comments/gf3xu/can_someone_help_me_understand_the_relationship/ | {
"a_id": [
"c1n408h",
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"score": [
3,
2,
3
],
"text": [
"To some degree, mathematical models can predict things in the real world. When Dirac theorized the positron, for instance, he did so almost completely on the basis that some cool equations he came up wi... | [] | [] | [
[],
[],
[]
] | |
6j13j5 | how long can someone be "knocked out" or put in a medically induced coma? and are there dangers of doing this ling term? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6j13j5/eli5_how_long_can_someone_be_knocked_out_or_put/ | {
"a_id": [
"djawzn8"
],
"score": [
2
],
"text": [
"Medically-induced coma is used for two things: prolonged seizures that do not respond to anything else, and head trauma which is causing pressure within the skull to rise to the point where the brain may be forced down out of the skull. In the fo... | [] | [] | [
[]
] | ||
3b11ad | how do we decipher ancient writings of civilizations that no longer exist? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3b11ad/eli5_how_do_we_decipher_ancient_writings_of/ | {
"a_id": [
"cshtyyu",
"cshtzcl",
"cshu4i8"
],
"score": [
9,
5,
4
],
"text": [
"Cross referencing languages that look similar, and or of same geographic area. There is more to it, but it's the tip of the ice berg. ",
"There are generally two ways to begin to work on this:\n\n1.... | [] | [] | [
[],
[],
[]
] | ||
4dglaj | Were things as good during the Reagan era as modern-day Republicans say they were? | This question is not meant to imply that they weren't; I simply was not alive then and do not know. But the rhetoric often used is that everything would be perfect if we would go back to the time of Reagan. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4dglaj/were_things_as_good_during_the_reagan_era_as/ | {
"a_id": [
"d1qsw5z"
],
"score": [
8
],
"text": [
"Hard to evaluate this question as stated, but if you're asking, \"Why do Republicans like Reagan\", here's an answer I gave a while back: _URL_0_"
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/30dvyd/why_is_ronald_reagan_so_praised_and_revered_by/cprlqb8"
]
] | |
rqkd7 | What is the largest stable molecule known? What molecule has the largest number of unique elements contained within it? | askscience | http://www.reddit.com/r/askscience/comments/rqkd7/what_is_the_largest_stable_molecule_known_what/ | {
"a_id": [
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"score": [
3,
3,
25,
8,
3
],
"text": [
"I don't know about the second part of your question, but as for the first, synthetic polymer chains have no theoretical limit on length, and as such are desc... | [] | [] | [
[],
[],
[
"http://www.newton.dep.anl.gov/askasci/chem03/chem03401.htm",
"http://en.wikipedia.org/wiki/Base_pair"
],
[
"http://en.wikipedia.org/wiki/Vulcanization"
],
[]
] | ||
6kiaay | how have phone operating systems, today managed to reduce the time required to uninstall an app within a second, irrespective of its size(android os) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6kiaay/eli5_how_have_phone_operating_systems_today/ | {
"a_id": [
"djm963g"
],
"score": [
9
],
"text": [
"I can't destroy a building you're using in a second, but I can lock the main door in a second. The result will be the same for you, you can't use the building anymore. I'll then take my time to actually destroy it properly. \n\nYour phone doesn't... | [] | [] | [
[]
] | ||
baqzer | every now and then when you inhale deeply there is that extra room to breathe in really deep that feels great. what is the biological mechanism behind this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/baqzer/eli5_every_now_and_then_when_you_inhale_deeply/ | {
"a_id": [
"ekdhmb1",
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"score": [
6,
3,
3
],
"text": [
"A deep breath increases oxygen to the brain and stimulates the parasympathetic nervous system which promotes calmness.",
" > What is the biological mechanism behind this?\n\nWhich part, taking a bi... | [] | [] | [
[],
[],
[]
] | ||
6n6vnv | how is it not considered false advertising for a company to make commercial that says an offer is only good for a limited or certain amount of time, then play it for years? | For example: I've seen the *same* advertisement for at least a decade with the exact same wording, actors and information that say it's only a 'Limited Time offer'
& nbsp;
Or commercials that say "Call within the next twenty minutes and get < bonus deal > " (and even include a timer that counts down to imply urge... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6n6vnv/eli5_how_is_it_not_considered_false_advertising/ | {
"a_id": [
"dk78ifn",
"dk7b186",
"dk7uszl"
],
"score": [
7,
5,
3
],
"text": [
"In the fine print they probably reserve the right to alter, extend, cancel any promotions at any time without any obligation to inform customers.",
"What is \"a limited time\"? Is it 20 seconds? 20 ... | [] | [] | [
[],
[],
[]
] | |
1ghwc4 | why animals can breed with their own family without genetic problems but humans cant | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ghwc4/eli5_why_animals_can_breed_with_their_own_family/ | {
"a_id": [
"cakdt6c",
"cakeaxm",
"cakeccz",
"cakeslz",
"cakh0hp"
],
"score": [
14,
6,
3,
2,
2
],
"text": [
"Animals can not be bred with their own families without causing occasional problems.\n\nThis is one of the reasons why most pure-bred dogs have a [shorter li... | [] | [] | [
[
"http://users.pullman.com/lostriver/breeddata.htm"
],
[],
[],
[],
[
"http://www.reddit.com/r/pics/comments/18wict/kenny_a_white_tiger_with_down_syndrome/"
]
] | ||
1z6z3o | What would the leaders of the American Revolution have expected to happen should the revolution have failed? | There's no such thing as a "sure thing" in a war or Revolution, so I suppose events could have lined up in a way that ended with the British putting down the Revolution. What would the leaders have expected to happen to them if they weren't successful - was "hanging together or separately" a real concern, or would the ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1z6z3o/what_would_the_leaders_of_the_american_revolution/ | {
"a_id": [
"cfrgn1w",
"cfrguau"
],
"score": [
6,
3
],
"text": [
"I think it's a stretch, without a firm source, to say the revolutionaries would have definitely been hanged for treason if the war went poorly. If the land-owning, formerly-respected members of the revolution sued for peace,... | [] | [] | [
[
"http://news.google.com/newspapers?nid=1298&dat=19901020&id=0v1NAAAAIBAJ&sjid=vYsDAAAAIBAJ&pg=6672,3881261"
],
[]
] | |
4yqdev | why does it seem that mercury(ii) thiocyanate is creating new mass when heated, therefore defying the law of conservation of mass? | This is what I'm talkng about
_URL_0_ | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4yqdev/eli5_why_does_it_seem_that_mercuryii_thiocyanate/ | {
"a_id": [
"d6pnnht",
"d6pon8a"
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"score": [
5,
10
],
"text": [
"Well, it's not creating new mass, because that would indeed break the laws of physics.\n\nThe fire causes the releases of gasses, which cause the entire thing to blow up like a sort of foam. The resulting material is very l... | [] | [
"https://youtu.be/xI_xTTqNj6o"
] | [
[],
[]
] | |
33ybmi | how can population keep growing, and poverty declining, in a world that has limited resources? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33ybmi/eli5_how_can_population_keep_growing_and_poverty/ | {
"a_id": [
"cqphsds"
],
"score": [
4
],
"text": [
"We keep getting better at using/gathering those limited resources... and \"limited\" in this sense is still a really large number."
]
} | [] | [] | [
[]
] | ||
3zezar | how does service in a (posh, i suppose) restaurant work - from the maitre d' taking orders, to what happens in the kitchen. | I ask because I'm watching Bradley Cooper's movie "Burnt" which is about a 2 star Michelin chef. From what I see, he seems to not cook at all, but receive orders, yell them out, and then 'ok' the dish to go. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3zezar/eli5_how_does_service_in_a_posh_i_suppose/ | {
"a_id": [
"cylj817",
"cylkhds"
],
"score": [
10,
2
],
"text": [
"In any proper restaurant, you will have 2 major teams: Front of House, and Back of House. Both of these teams report up to the Owner and his team. Let's look at Front of House. In the front, you will have the Maitre d' ... | [] | [] | [
[],
[]
] | |
34xstz | why do you get a closer shave when you go over the same area multiple times? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/34xstz/eli5_why_do_you_get_a_closer_shave_when_you_go/ | {
"a_id": [
"cqz1ht0"
],
"score": [
2
],
"text": [
"because the first pass takes some hair, and some of the top layer of dead skin. so the second pass is closer to the root of the hair.\n\npro tip: exfoliate before you shave. then do one pass. less razor bumps, healthier skin, closer shave."
... | [] | [] | [
[]
] | ||
1dj0sa | What were some true triumphs in Hitler's military control, and what were some undeniable examples of his incompetency? | Open for all input. Thanks! | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1dj0sa/what_were_some_true_triumphs_in_hitlers_military/ | {
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"score": [
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],
"text": [
"Triumph: Hitler attacked Poland, and then the following spring France, at a time when most of his generals felt that Germany was far from ready to fight. (They wanted to wait unt... | [] | [] | [
[],
[],
[
"http://www.amazon.com/The-Blitzkrieg-Legend-1940-Campaign/dp/1591142954/",
"http://www.amazon.com/Quest-Decisive-Victory-Stalemate-Blitzkrieg/dp/0700616551/"
],
[]
] | |
2vcij5 | how did you distinguish friendly and enemy knights during the war of the roses when knights did wear plate armor? | So lately I have been reading about the war of the roses and have been looking up paintings of some of the battles. I started noticed that knights almost didn't wear any tabard or any other indications which side they belong to.
[an example.](_URL_1_)
In this painting the knights/men at arms don't wear any cloth that... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2vcij5/how_did_you_distinguish_friendly_and_enemy/ | {
"a_id": [
"cogz4od"
],
"score": [
2
],
"text": [
"The first example you show is a modern painting by Graham Turner. The second is a manuscript illumination, probably painted by someone who never saw the battle depicted. So I would caution against concluding that, because of these depictions kn... | [] | [
"http://upload.wikimedia.org/wikipedia/commons/e/e9/Battle_of_Barnet_retouched.jpg",
"http://www.multiwords.de/genealogy/BattleTewkesbury.jpg"
] | [
[]
] | |
1j945t | Does it help to read works in their original languages? | For example, if I were to read Cicero's *Orations*, should I read it in its original Latin? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1j945t/does_it_help_to_read_works_in_their_original/ | {
"a_id": [
"cbccbmg"
],
"score": [
3
],
"text": [
"Yes and no.\n\nBasically it depends on your Latin. Reading and translating stuff ancient languages is both a science and an art. There is more to Latin than 'Latin': [there are several different sorts](_URL_0_). Hence why there are so many transl... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Latin#History_of_Latin"
]
] | |
an0d70 | why does black ink often appear a metallic purple/orange colour? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/an0d70/eli5_why_does_black_ink_often_appear_a_metallic/ | {
"a_id": [
"efpvdig"
],
"score": [
2
],
"text": [
"Because black is all of the colors. It has purple and orange in it. So depending how the light hits it depends what shines "
]
} | [] | [] | [
[]
] | |
f5bpf6 | Does the quality of gold impact its conductivity? | This is for a DnD campaign, just to clarify. One character is attempting to con another into buying her low quality/low karot gold in exchange for his high quality because the low one will "be a better conductor" for electricity.
I was wondering if she's actually right in this? | askscience | https://www.reddit.com/r/askscience/comments/f5bpf6/does_the_quality_of_gold_impact_its_conductivity/ | {
"a_id": [
"fhxstxd",
"fi041jq",
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"score": [
2,
7,
2
],
"text": [
"Well, yeah, but I would guess not to an extent that is meaningful in a DnD setting. But that depends on your story.",
"The main conductors of electricity in metals are free electrons. Impurities ser... | [] | [] | [
[],
[],
[]
] | |
7pnjle | How did scientists practice chemistry before the mass production of chemicals? | I did a practical today, where I used a lot of different chemicals in different concentrations. I don't think people in the 18th century were able to produce magnesium sulfite of exactly 1M, so how did they do their research? | askscience | https://www.reddit.com/r/askscience/comments/7pnjle/how_did_scientists_practice_chemistry_before_the/ | {
"a_id": [
"dsjbcx3",
"dsjhhzu"
],
"score": [
4,
21
],
"text": [
"If you don't get an answer here, you can try /r/askhistorians, /r/historyofscience, or /r/philosophyofscience",
"Well for starters you have to forget about molar concentrations, since they didn't know about molecules in... | [] | [] | [
[],
[]
] | |
r5mnl | Is there a particular reason as to why Tutankhamen's tomb wasn't discovered before 1922? | Did it have something to do with his father (?) trying to replace Egypt's many gods with one god? Was there a conscious effort at the time to hide all traces of this act, including the location of Tut's tomb? Or was it just luck?
EDIT: Might want to clarify.. When I say "discovered before 1922" I also mean "Wasn't ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/r5mnl/is_there_a_particular_reason_as_to_why/ | {
"a_id": [
"c4357qk"
],
"score": [
12
],
"text": [
"Multiple reasons, as far as I can tell. I don't think it had much to do with his father (by which you mean Akhenaten, I imagine), despite the stigma that we assume came with his progenitor's name. After the glamor and chaos of Akhenaten's rule... | [] | [] | [
[
"http://ngm.nationalgeographic.com/ngm/0506/feature1/text2.html",
"http://en.wikipedia.org/wiki/Giovanni_Battista_Belzoni"
]
] | |
1yjvpd | Did pop culture exist in the post-Roman period? | I've comes across quite a few references to aspects of Roman culture which are identifiable as being 'pop culture', even if not in a directly modern sense, but I don't know that I've ever seen mention of anything vaguely recognisable as such in the post-Roman period (in the West, at least) until comparatively recent hi... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1yjvpd/did_pop_culture_exist_in_the_postroman_period/ | {
"a_id": [
"cfle9ze"
],
"score": [
2
],
"text": [
"When you write \"post-Roman,\" do you mean the early middle ages? \nA lot of the art and culture that has been preserved from that period is sacred, partly because the institutions recording everything were affiliated with the church. You can't r... | [] | [] | [
[]
] | |
3zdtde | Why does hand sanitizer kill the bacteria and viruses on my hands, but not the living skin cells directly adjacent? | askscience | https://www.reddit.com/r/askscience/comments/3zdtde/why_does_hand_sanitizer_kill_the_bacteria_and/ | {
"a_id": [
"cylr0ro"
],
"score": [
12
],
"text": [
"Sanitizer kills in two ways: it draws out water and dehydrates things, and it disrupts macromolecules, leading them to precipitate/aggregate and become nonfunctional. Both of these effects contribute to make pathogens non-infectious.\n\nSkin is ... | [] | [] | [
[]
] | ||
a3aqnh | how do people make those picture mosaics where the image is made up of hundreds of smaller, different versions of the same subject? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a3aqnh/eli5_how_do_people_make_those_picture_mosaics/ | {
"a_id": [
"eb4nunc",
"eb4nw8q"
],
"score": [
6,
3
],
"text": [
"essentially you give a program a folder full of pictures (alot!) and it calculates the color value of each, if reduced to 1x1 pixel. then you give it a picture that you wanna make \"a mosaik\" this way and it runs through al... | [] | [] | [
[],
[]
] | ||
8rj6dw | why is the feeling of silverware hitting your teeth so uncomfortable? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8rj6dw/eli5_why_is_the_feeling_of_silverware_hitting/ | {
"a_id": [
"e0rqhug"
],
"score": [
5
],
"text": [
"Soft material will absorb impact much better than hard material. Think about hitting that spoon on your shin and your calf - the shin will feel much weirder than your calf. As for WHY that sensation is so much more uncomfortable, I could only sup... | [] | [] | [
[]
] | ||
3naywt | why do defendents on tv court shows defend their case so vigorously if they don't pay settlements out of pocket? | Defendents seem to get genuinely upset when the judge is not siding with them even when they have no real case? Is it just an act? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3naywt/eli5_why_do_defendents_on_tv_court_shows_defend/ | {
"a_id": [
"cvmfbny",
"cvmfihz",
"cvmhhuv"
],
"score": [
4,
4,
3
],
"text": [
"Because people really want to be right, and want to be vindicated about being right on national television. That's why they went on the show on the first place. They don't like to be proven wrong.",
... | [] | [] | [
[],
[],
[]
] | |
dlge1z | how can big game developers like rockstar or valve seal all the informations about their biggest titles - like gta 6 or half life 3 - despite having hundreds or even thousands employees around the globe? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dlge1z/eli5_how_can_big_game_developers_like_rockstar_or/ | {
"a_id": [
"f4ptunm",
"f4puavk"
],
"score": [
3,
2
],
"text": [
"NDAs (non disclosure agreements), employee contracts and possibly legal action tend to keep employees right lipped",
"NDAs, yeah, but also the tried and true method of spies, terrorists and anyone working with Tom Hollan... | [] | [] | [
[],
[]
] | ||
tnex6 | what are 'mach' points of speed? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/tnex6/eli5_what_are_mach_points_of_speed/ | {
"a_id": [
"c4o3nzv",
"c4o72cx"
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"score": [
2,
2
],
"text": [
"Mach 1 is the speed of sound (340.29 m / s)\n\nMach 2 is twice the speed of sound (680.58 m / s)\n\n",
"Every different material has a different speed that kinetic energy naturally wants to move through it. That speed i... | [] | [] | [
[],
[]
] | ||
31lnza | why do people cough up dark tar when they quit smoking, but it doesn't happen as much when they are still smoking? | It seems like people "cough up a lung" and get all the black stuff out after they quit smoking, but it doesnt happen so much when they are still actually smoking? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/31lnza/eli5why_do_people_cough_up_dark_tar_when_they/ | {
"a_id": [
"cq2q2v8",
"cq2q5xp"
],
"score": [
2,
5
],
"text": [
"The short answer is that smoking suppresses the function of the lungs, thus hindering their ability to remove toxins. When you quit smoking, the body quickly starts on clearing things out and repairing itself.",
"There a... | [] | [] | [
[],
[]
] | |
3bk5do | why is it that counting down is universally easy, but keeping rhythm is not? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3bk5do/eli5_why_is_it_that_counting_down_is_universally/ | {
"a_id": [
"csmv2cf"
],
"score": [
2
],
"text": [
"I'd say it's a practice thing. Also musical meter isn't always directly linked to our understanding of the passage of time. Where most people have a good idea of what a second feels like, not everyone can instantly grasp a what a beat is in a giv... | [] | [] | [
[]
] | ||
a3siky | When are the earliest examples of pornography from, and what were the main forms of consumption before mass media? | There are many cavedrawings from primitive peoples, have any of those found seemed to include any form of pornography? Do we know the first documented example of porn? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/a3siky/when_are_the_earliest_examples_of_pornography/ | {
"a_id": [
"eb8s5y7"
],
"score": [
5
],
"text": [
"I have answered this a [few](_URL_2_) [times](_URL_4_] [before](_URL_3_) and you might be interested [in my book](_URL_1_) but here was the most recent summary of this:\n\n\nI'm adapting this from some older answers. \n\n\nHere's the tricky thing... | [] | [] | [
[
"https://commons.wikimedia.org/wiki/File:A_Free_Ride_\\(1915\\).ogv",
"https://www.amazon.com/Annals-Pornographie-How-Porn-Became-ebook/dp/B01CMU51V8",
"https://www.reddit.com/r/AskHistorians/comments/7ez97f/when_did_pornography_come_about_in_human_history/",
"https://www.reddit.com/r/AskHistorian... | |
1wdx7x | if buffets are cheaper than having a restaurant with a waiting staff, why aren't all restaurants buffets? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wdx7x/eli5_if_buffets_are_cheaper_than_having_a/ | {
"a_id": [
"cf126mq",
"cf12adz",
"cf12vd3",
"cf13pbi"
],
"score": [
5,
2,
2,
3
],
"text": [
"It may be cheaper to operate, but that doesn't mean it will make more money or more profit.",
"People won't pay as much for a buffet so you'll probably not make as much profit.... | [] | [] | [
[],
[],
[],
[]
] | ||
798v9m | what would happen if one of my eyes are covered for a long time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/798v9m/eli5_what_would_happen_if_one_of_my_eyes_are/ | {
"a_id": [
"dp031p3",
"dp03dep"
],
"score": [
3,
5
],
"text": [
"What do you mean by \"a long time\"? Is it half an hour? Half a month? Five years? Twenty years? \n\nIn like 15 minutes, your pupil would dilate(non-native English speaker, is this right? I am thinking expand), letting in mo... | [] | [] | [
[],
[]
] | ||
16jslo | What's "greener" and/or more energy efficient? Paper towels or Hand Dryers? | askscience | http://www.reddit.com/r/askscience/comments/16jslo/whats_greener_andor_more_energy_efficient_paper/ | {
"a_id": [
"c7wphku",
"c7wqv96"
],
"score": [
22,
3
],
"text": [
"There are many variables, but electric dryers are lower in cost to operate and, over a lifetime, can be better for the environment (how much depends on paper source, type of dryer, power source...). However, they may not be... | [] | [] | [
[
"http://en.m.wikipedia.org/wiki/Hand_dryer",
"http://www.mayoclinicproceedings.org/article/S0025-6196(12)00393-X/fulltext"
],
[
"http://www.ted.com/talks/joe_smith_how_to_use_a_paper_towel.html"
]
] | ||
117ope | Everyone is talking about CO2 and global warming, but could increased water usage (Fossile water from irrigation) make temperature increase? | I was wondering this question cause I see all these different irrigation projects in the middle east and other dry areas, and i thought "All that water coming into the cycle can't be that good either."
Is this also a concern? | askscience | http://www.reddit.com/r/askscience/comments/117ope/everyone_is_talking_about_co2_and_global_warming/ | {
"a_id": [
"c6k1cq6"
],
"score": [
2
],
"text": [
"Water vapor is a huge greenhouse gas. \n\nWe are more worried about the ocean warming and evaporating more than we are worried about some irrigation operations. \n\nThe ocean has a vastly greater surface area and is much more capable of altering ... | [] | [] | [
[]
] | |
kylc3 | why gifs can't have sound. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/kylc3/eli5_why_gifs_cant_have_sound/ | {
"a_id": [
"c2ob6vy",
"c2oejfm",
"c2oiny5",
"c2ob6vy",
"c2oejfm",
"c2oiny5"
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"score": [
4,
2,
2,
4,
2,
2
],
"text": [
"Gif, jpg, png, mov, avi, mp4 and any other extension you see like that are really just a set of standards. A standard pretty much says, ... | [] | [] | [
[
"http://www.w3.org/Graphics/"
],
[],
[],
[
"http://www.w3.org/Graphics/"
],
[],
[]
] | ||
6e3tk9 | Do x-rays occur in nature? | askscience | https://www.reddit.com/r/askscience/comments/6e3tk9/do_xrays_occur_in_nature/ | {
"a_id": [
"di7hxzc",
"di7m9hk",
"di7s88q"
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"score": [
9,
4,
11
],
"text": [
"Absolutely, although when they're of cosmic origin they tend to be called \"Gamma\" radiation. The sun produces x-rays, and Uranium produces it through Compton scattering. More energetic and massively ... | [] | [] | [
[],
[],
[]
] | ||
bh8v5b | why do car keys (the one with buttons) only unlock your car and none others? not even the same model? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bh8v5b/eli5_why_do_car_keys_the_one_with_buttons_only/ | {
"a_id": [
"elqur1f",
"elqur8g",
"elqv6gi",
"elqv7v4",
"elqvdy9",
"elqwank"
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"score": [
5,
4,
4,
3,
2,
2
],
"text": [
"Small computers that are connected to eachother, they’re called immobilizers and they have specific codes to be in sync with a specific ... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
22faar | why are planes round tubes instead of flattened ovals shaped? | Would planes fly better and seat more passengers if they were flattened ovals?
Thanks | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22faar/eli5_why_are_planes_round_tubes_instead_of/ | {
"a_id": [
"cgm7yth"
],
"score": [
11
],
"text": [
"I'm not an engineer, but structurally cylinders are incredibly strong. An \"flattened tube\" would probably collapse much more easily from all the stresses involved in flight."
]
} | [] | [] | [
[]
] | |
68di7v | if a person had enough money to design and build a functional space ship, capable of traveling and landing and whatnot, would it be legal? would the government be able to do anything? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/68di7v/eli5_if_a_person_had_enough_money_to_design_and/ | {
"a_id": [
"dgxn0ny",
"dgxo4vd",
"dgxoboc"
],
"score": [
2,
25,
3
],
"text": [
"The government would most likely not be able to stop you as people have personal planes, helicopters ect. But they would probably try to buy it from you.",
"Well there let's consider these two opti... | [] | [] | [
[],
[
"http://www.spacex.com/",
"https://www.faa.gov/aircraft/gen_av/ultralights/amateur_built/aw/",
"https://www.blueorigin.com/"
],
[]
] | ||
ayj6k7 | How did people light candles before the invention of matches/lighters? | The title pretty much covers it: how did they do it? The only rudimentary ways of lighting fires (mirrors, flint and steel, friction, etc) I can think of wouldn't work on a candle wick, at least not effectively, so how did they light candles? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/ayj6k7/how_did_people_light_candles_before_the_invention/ | {
"a_id": [
"ei6w77k"
],
"score": [
3
],
"text": [
"Starting from a \"there's no fire nearby\" state would require breaking out a tinderbox and flint and steel. You would strike sparks from the flint and steel into material that would be highly susceptible to catching fire. This might be something... | [] | [] | [
[]
] | |
25mjy0 | the california energy crisis of 2000 and the enron scandal | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25mjy0/eli5_the_california_energy_crisis_of_2000_and_the/ | {
"a_id": [
"chimpjc",
"chinil4"
],
"score": [
5,
3
],
"text": [
"As for the energy crisis, basically Enron would cut off the power supply so that the cost of electricity would skyrocket, and then turn it back on in order to make more money. Enron in general, that was mostly down to a typ... | [] | [] | [
[],
[]
] | ||
pu1xa | How do groups of photons form electromagnetic waves? | askscience | http://www.reddit.com/r/askscience/comments/pu1xa/how_do_groups_of_photons_form_electromagnetic/ | {
"a_id": [
"c3s8vry"
],
"score": [
2
],
"text": [
"You are mixing two concepts. Photons have both wave-like and particle-like properties. It is not the case that adding up the particle-properties (the quantized packets) yields the wave-like behavior. \n\n_URL_0_"
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality"
]
] | ||
3fxw8t | Has an American President, after serving his term, ever served on a jury? | A rather funny comment in this thread ( _URL_0_ ) has my curious. Has an American president, after serving his term, ever served on a jury? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3fxw8t/has_an_american_president_after_serving_his_term/ | {
"a_id": [
"ctt17xr"
],
"score": [
18
],
"text": [
" > In fact, no modern court has had a sitting president on a jury. Ronald Reagan came the closest when he was summoned in the 1980s by Santa Barbara County, Calif. He was granted a deferment until he was out of office.\n\n[Source 1](_URL_3_)\n\n... | [] | [
"https://www.reddit.com/r/pics/comments/3fwhjj/look_who_my_friend_has_jury_duty_with_today/ctslrw1"
] | [
[
"http://time.com/3986224/george-w-bush-jury-duty/",
"https://www.law.cornell.edu/uscode/text/28/1866",
"https://www.law.cornell.edu/uscode/text/2/30a",
"http://www.csmonitor.com/2006/0110/p01s03-uspo.html"
]
] | |
4wpp63 | Border between East Germany and Czechoslovak Socialist Republic during Cold War | Were there formal border crossings or a 'wall' between East Germany and the Czechoslovak Socialist Republic during the Cold War? Would it have been relatively easy for someone from East Germany to travel to the other socialist state or would they have needed to apply for a visa / go through inspection at the border bef... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4wpp63/border_between_east_germany_and_czechoslovak/ | {
"a_id": [
"d6921lb",
"d6939kc"
],
"score": [
4,
5
],
"text": [
"There was no special permission required for Czechoslovaks during the Communist era to travel to other Eastern Bloc countries, including the GDR. This does not mean, however, that one could just waltz across the border, whic... | [] | [] | [
[],
[]
] | |
friep3 | Did the SS take measures to reduce the spread of infection to themselves during the Holocaust? | The camps during the Holocaust were prime breeding grounds for diseases to spread through them. Did the SS have any measures to make sure that they themselves did not become infected? If so what were they? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/friep3/did_the_ss_take_measures_to_reduce_the_spread_of/ | {
"a_id": [
"flwi2fg"
],
"score": [
11
],
"text": [
"The camps were designed to run with a minimum of SS personnel and not so much personal contact.\n\nKapos were frequently employed to keep order and handle a lot of the day to day business of the camp, including punishments and physical abuse. K... | [] | [] | [
[]
] | |
89snwm | can anyone launch a satellite? or are there laws claiming space territory? | With the FCC approving spaceX to launch all those satellites why would they even need approval? Is space not borderless? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/89snwm/eli5can_anyone_launch_a_satellite_or_are_there/ | {
"a_id": [
"dwt838a"
],
"score": [
5
],
"text": [
"Per the [Outer Space Treaty](_URL_0_) of 1967, governments cannot stake a claim to territory in space—so yes, space is indeed borderless. However, to get to outer space, Spacex's rockets first have to pass through the airspace directly above the ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Outer_Space_Treaty"
]
] |
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