q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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2bq4u6 | is asthma curable? beacuse it has happened 8 years since i had an asthma attack | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bq4u6/eli5is_asthma_curable_beacuse_it_has_happened_8/ | {
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"Many people grow out of their asthma as they get older. I used to have severe asthma when I was younger, and had to be hospitalized on occasion. However, between ages 15-20 my asthma cleared up dramatically. I still carry an inhaler, but haven't ... | [] | [] | [
[]
] | ||
4gs3jo | Why did India end up with Christian-majority regions in the country's east, as opposed to much sparser representation in the rest of the country? | I was previously under the impression that India's Christian population was relatively evenly distributed, with a more urban than rural presence but largely geographically proportionate. However, there are three Christian-majority states in the east, Nagaland, Mizoram and Meghalaya.
Of course, vast majority of India'... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4gs3jo/why_did_india_end_up_with_christianmajority/ | {
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"Also add Arunachal and Upper Assam, which while not necessarily a Christian majority, are certainly significantly Christian and growing.\n\nThe short answer is that Baptist missionaries spread throughout the region. The Nagas are predominantly Ba... | [] | [] | [
[
"http://vkvapt.org/kharsang-latest-news/279-kharsang-rangfra-day.html"
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654euc | why is read spelt the same as read | I mean the two tenses if you don't understand. I'm asking because i always read the past tense read as the present tense read | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/654euc/eli5_why_is_read_spelt_the_same_as_read/ | {
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"First of all, the verb *to read* isn't unusual in changing its vowel sound to indicate the past tense. There are lots of verbs that don't follow the usual *add -ed* rule of showing past tense. For instance:\n\n* *lead* ~ *le... | [] | [] | [
[
"https://reddit.com/r/etymology"
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1nolmo | what does increasing "contrast" on a tv or computer screen actually do? | I mean, it has to do something with black and white, but what exactly? How does it work?
Thanks! :)
< 3 | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1nolmo/eli5_what_does_increasing_contrast_on_a_tv_or/ | {
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"In the context of video displays, contrast refers to the difference between the faintest and the brightest pixel displayed. Adjusting the contrast control will usually adjust the signal amplification mu... | [] | [] | [
[],
[],
[
"http://i.imgur.com/Bmr0zvE.jpg",
"http://i.imgur.com/jyazUAj.jpg"
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348x93 | why does the giant red spot on jupiter keep on going? if it's a storm why hasn't it just blown its self out/dispersed over time? how long will it last before it does go? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/348x93/eli5_why_does_the_giant_red_spot_on_jupiter_keep/ | {
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"http://csep10.phys.utk.edu/astr161/lect/jupiter/a... | ||
2jm1la | How distantly (genetically speaking) are we related to the mitochondria in our cells? | I know technically our mitochondrial DNA is our DNA. But if we were to look at our Nucleus and mitochondria as two different species how distantly related would we say they are? Additionally same question for plants and their chloroplasts. | askscience | http://www.reddit.com/r/askscience/comments/2jm1la/how_distantly_genetically_speaking_are_we_related/ | {
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"There's been a lot of translocation events, and a lot of mitochondrial genes are not within \"our genome,\" rather than remaining on mitochondrial plasmid DNA. Mitochondria were (most likely) single cell organisms (prokaryot... | [] | [] | [
[],
[]
] | |
33jbi9 | how is the age of a wild animal determined? | I was just reading a news article from a year ago, in which they found a 103 year old orca whale. It led me to wondering how they knew that this orca was 103 years old!
If anyone is interested, here is the article: _URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33jbi9/eli5_how_is_the_age_of_a_wild_animal_determined/ | {
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"There are many ways to tell the age of an animal, usually it is done via dentition. However, in the case of Orcas and other marine mammals the only real way is through large photo databanks. Photos of the orcas, especially their dorsal fins can t... | [] | [
"https://www.thedodo.com/recently-spotted-103-year-old--547381307.html"
] | [
[]
] | |
a47072 | How Long does it take after division for a cell to become fully operational? | After meiosis, is there a time period that the cells remains inactive and prepares for its function? Or does the cell immediately begin to function right when division is done. | askscience | https://www.reddit.com/r/askscience/comments/a47072/how_long_does_it_take_after_division_for_a_cell/ | {
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"It's different for different cells. And likewise depends on the function. For some white blood cells, they have to actually divide multiple times and then actually start making protein (several hours) before they're considered active. Alternative... | [] | [] | [
[]
] | |
exn5o | Best books and videos to help understand/slightly dumb down quantum mechanics? | I just finished reading Hawking's The Grand Design, and now I'm on Greene's The Fabric of the Cosmos (Chapter 4). While both have been incredibly interesting and I feel like I'm getting a decent grasp on a lot of these concepts, I'm looking for some good books and videos to cross reference.
I do really well learning ... | askscience | http://www.reddit.com/r/askscience/comments/exn5o/best_books_and_videos_to_help_understandslightly/ | {
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"It's hard to dumb down quantum mechanics, because without the mathematics it's just nonsense and witchcraft. Depending on your background, I'd recommend a second year modern physics textbook, which are generally called \"Modern Physics.\" Unfortu... | [] | [] | [
[]
] | |
jevq6 | What taste receptor(s) is/are involved in the 'burnt' taste, and how are they activated? | As a follow-up to [this post](_URL_0_), which has some good information but not quite to the depth of my curiosity.
I know that ion channels and receptor proteins are responsible for the standard tastes (bitter, salty, sour, sweet, umami), but I'm wondering if something like this is also going on with the taste of... | askscience | http://www.reddit.com/r/askscience/comments/jevq6/what_taste_receptors_isare_involved_in_the_burnt/ | {
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"I don't know but I'd wager that if anyone knows, somebody or another working here could point you in the right direction: _URL_0_",
"A large component of taste is smell, which ... | [] | [
"http://www.reddit.com/r/askscience/comments/ha9qy/on_the_molecular_level_why_does_food_look_and/"
] | [
[
"http://www.monell.org/contact_us"
],
[],
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"http://www.monell.org/contact_us"
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ajgdp2 | how come older video games have fewer glitches | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ajgdp2/eli5_how_come_older_video_games_have_fewer/ | {
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"Part of it was that older video games were simpler, and thus had le... | [] | [] | [
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4pu4it | We have lots of evidence of source of the *Bible*, do we have any evidence for sources of the *Iliad* or the *Odyssey*? | There is internal and external evidence that the *Bible* comes from other sources. Whether the repetitions (Moses and the rock) or known other versions (Noah story). Do we have anything similar for either of Homer's epics. I know we have evidence that something Troy like existed and there were probably some sort of war... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4pu4it/we_have_lots_of_evidence_of_source_of_the_bible/ | {
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"There is strong evidence that parts of Homer's works are much older than their attributed date, and that components are part of a larger Indo-European epic tradition.\n\nOne great starting point is a Bryn Mawr symposium volume, *Troy and the Troj... | [] | [] | [
[
"http://repository.brynmawr.edu/cgi/viewcontent.cgi?article=1006&context=bmc_books"
]
] | |
1g5bdp | How does a fetus in utero hiccup? | askscience | http://www.reddit.com/r/askscience/comments/1g5bdp/how_does_a_fetus_in_utero_hiccup/ | {
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"A contracting diaphragm can trigger hiccups in mature fetuses. In order for a fetus to hiccup in the womb, its central nervous system must be complete. The central nervous system gives the fetus the ability to breathe in amniotic fluid. A hiccup ... | [] | [] | [
[]
] | ||
ardowj | why does gifs and videos sometimes buffer twice? | Sometimes after i've seen the gif once it pauses to buffer on the second view. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ardowj/eli5_why_does_gifs_and_videos_sometimes_buffer/ | {
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"Lets say its dark and you want to fill a cup with water. Its your first time ever filling this cup. You like your water all the way to the top of the cup, and some bad cup designer didnt put a lid or marker to let you know it's full. So you pour ... | [] | [] | [
[]
] | |
7211op | Name of the USS Enterprise | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7211op/name_of_the_uss_enterprise/ | {
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"text": [
"It hasn't changed much. Still retaining the conceptualization of an undertaking, especially a large or bold one. And we see that in the origin of the early Enterprises. Of the two under the Continental Navy one was captured from the British in a... | [] | [] | [
[]
] | |
5xl43i | why are so many us veterans homeless? why are they in this position or how did they get to this point (generally speaking) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5xl43i/eli5_why_are_so_many_us_veterans_homeless_why_are/ | {
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3opzae | Linguists: Are there studies that look to find links between Asian language and Native North American speech? | askscience | https://www.reddit.com/r/askscience/comments/3opzae/linguists_are_there_studies_that_look_to_find/ | {
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"text": [
"Yes. However the only really notable one so far is [the Dené-Yeniseian theory](_URL_0_), though.",
"The linguist Edward Vajda has proposed a link between the Na-Dené language family in North America and the Yeniseian la... | [] | [] | [
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"https://en.wikipedia.org/wiki/Den%C3%A9%E2%80%93Yeniseian_languages"
],
[
"https://en.wikipedia.org/wiki/Dené–Yeniseian_languages",
"https://www.uaf.edu/anlc/dy/"
]
] | ||
be3r5o | Irish Independence | One thing I've never understood is why the UK was so determined to hold on to Ireland. By the time the Republic gained independence, American was long gone, Canada and Australia had free rule as independent members of the Commonwealth. What made the UK so determined to hold on to Ireland? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/be3r5o/irish_independence/ | {
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"First, Ireland wasn't a distant colony like the others mentioned, the 1800 Act of Union made it part of the United Kingdom of Great Britain and Ireland. Just like England, Scotland and Wales, MP's elected in Ireland took their seats in Westminste... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Martello_tower#Ireland"
]
] | |
5gbszw | how do big tech companies make money off of free services (especially those without ads e.g. google maps)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5gbszw/eli5_how_do_big_tech_companies_make_money_off_of/ | {
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"Because it keeps you in their ecosystem, making you more likely to use other products by them which they do make a profit from, either by selling the service or by using the collected data they have on ... | [] | [] | [
[],
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[]
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2qsh89 | how comes elementary, middle, and high school is so meaningless and easy, but college is so much pressure and everything coming down on you at once | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qsh89/eli5_how_comes_elementary_middle_and_high_school/ | {
"a_id": [
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"text": [
"In today's marketplace it can be very tough to get a good paying job without a college degree. In fact, you can even look t it in the current state of the economy that the degree won't even guarantee you a job anymore. What it is good for is to g... | [] | [] | [
[]
] | ||
akoktk | why is it that when someone needs to sneeze but can’t quite get it out, looking at a bright light helps? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/akoktk/eli5_why_is_it_that_when_someone_needs_to_sneeze/ | {
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"text": [
"It’s the photic sneeze effect. A large percentage of people have a gene that causes them to sneeze when they look at the sun.",
"The trigeminal nerve (... | [] | [] | [
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25s5kq | what should i do in a brawl? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25s5kq/eli5what_should_i_do_in_a_brawl/ | {
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"text": [
"Definitely curl up in the fetal position.",
"[Karate chop] (_URL_0_)",
"If you have ... | [] | [] | [
[],
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"https://www.youtube.com/watch?v=67isFmH5vQ8"
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3pyscu | why does fish smell so much more than other kinds of meat? | Why is that classic "fishy odor" so sharp and so prone to lingering when compared to beef, chicken, etc? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3pyscu/eli5_why_does_fish_smell_so_much_more_than_other/ | {
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"text": [
"They live in a completely different environment, for one.\n\nThey are very much further divergent in common ancestry than, say cows, pigs, and ourselves. Notice that poultry has a stronger and very diff... | [] | [] | [
[],
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r6bh8 | Dear /r/askscience, please help me educate myself on evolution. | askscience | http://www.reddit.com/r/askscience/comments/r6bh8/dear_raskscience_please_help_me_educate_myself_on/ | {
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"text": [
"The one I prefer is [Berkeley's Evolution 101](_URL_0_).",
"The best \"self-educate\" resources on evolution that I have ever discovered are:\n\n1. _URL_0_\n\n2. Why Evolution Is True, by Jerry Coyne (book)\n\n3. The ... | [] | [] | [
[
"http://evolution.berkeley.edu/evolibrary/article/evo_01"
],
[
"talkorigins.org"
]
] | ||
5j248m | if you look at the 70s and 80s, their culture (music, clothes, etc.) was so different from each other. why does 2000s and 2010s culture seem almost the same? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5j248m/eli5_if_you_look_at_the_70s_and_80s_their_culture/ | {
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... | [] | [] | [
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1vd3t9 | What provisions would sailors bury in the 16th - 17th centuries? | I was re-reading the Secret Voyage of Sir Francis Drake and it mentions he buried provisions in a cove in S America expecting a return to the same hideaway to continue to plunder the Spanish. In general, what provisions would sailors bury that would be valuable but also worth the risk of losing? Along with the danger... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1vd3t9/what_provisions_would_sailors_bury_in_the_16th/ | {
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"My knowledge is from a slightly later period, but I'll give it a shot.\n\nFresh water for one thing. The casks of water would already be brackish part way through an overseas voyage (even going as far as British colonies in the New World sailing... | [] | [] | [
[]
] | |
3qlrnr | the situation in the south china sea. why doesn't some international body (such as the un) rule who owns what part of the ocean, and what is international waters? | [The whole situation seems messy and dangerous.](_URL_0_). Surely there must be some international law that covers situations like this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qlrnr/eli5_the_situation_in_the_south_china_sea_why/ | {
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"text": [
"Because no body of gov tells what sovereign countries what the rules are. Some countries agreed to certain rules between themselves in a treaty. Other c... | [] | [
"http://www.theguardian.com/world/2015/oct/28/china-not-frightened-fight-war-south-china-sea-uss-lassen"
] | [
[],
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3y9jgo | How could a crystal like this be grown in the lab as they state? | I saw this browsing through eBay and I was wondering how they could actually produce something like that in a lab:
_URL_0_
They say the crystal is a combination of purple colored amethyst and lighter yellowish colored citrine quartz (some doubly terminated).
I am curious because all of the home/lab grown crystals I ... | askscience | https://www.reddit.com/r/askscience/comments/3y9jgo/how_could_a_crystal_like_this_be_grown_in_the_lab/ | {
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"text": [
"I'm not completely sure it's lab-grown at all. [Here](_URL_0_) you have a short summary of how quartz crystals (like amethyst) are grown with the use of an autoclave.\n\nThe crystal you refer to doesn't look like it's lab grown but I do suspect i... | [] | [
"http://www.ebay.com.au/itm/AMETHYST-CITRINE-QUARTZ-LAB-LABRATORY-GROWN-GERMANY-MINERALS-CRYSTALS-GEMS-CAB-/381320583266?hash=item58c87a5862:g:f1oAAOSwrklVellS"
] | [
[
"http://www.vogelcrystals.net/Hydrothermal.htm",
"http://www.geologyin.com/2015/08/changes-in-color-of-amethyst-by-heat.html"
]
] | |
iv3g9 | If you were on the moon could you throw a rock hard enough for it to either escape the moon's gravity or enter into orbit around it? | askscience | http://www.reddit.com/r/askscience/comments/iv3g9/if_you_were_on_the_moon_could_you_throw_a_rock/ | {
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"text": [
"Escape the moon's gravity? No. The moon's escape velocity is ~2376 m/s (5314 mph).",
"The formula for escape velocity is v = sqrt(2GM/r)\n\nG is the gravitational constant: 6.67300 × 10^-11 m^3 kg^... | [] | [] | [
[],
[],
[
"http://xkcd.com/681_large/"
]
] | ||
2e8397 | How does the physiological response triggered by watching a horror movie compare with a 'true' horror response? | For instance, are the same regions of the brain activated?
(The topic arose over on /r/truegaming in [this thread](_URL_0_).) | askscience | http://www.reddit.com/r/askscience/comments/2e8397/how_does_the_physiological_response_triggered_by/ | {
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"As a general theoretical rule, it's not the situation itself that elicits an emotional response, but our interpretation of the situation (e.g., Siemer, Mauss, & Gross, 2007). For example, if I think mice are disease-ridden, then I might react i... | [] | [
"http://www.reddit.com/r/truegaming/comments/2e6uy5/are_horror_games_bad_for_the_brain_is_the/"
] | [
[]
] | |
5ry1nd | how come after you recover from a sickness such as the flu or a stomach virus, for a few days your stomach is wonky and doesn't seem to work properly? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ry1nd/eli5_how_come_after_you_recover_from_a_sickness/ | {
"a_id": [
"ddb49ei"
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"score": [
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"text": [
"Your body's natural response is to basically flush everything out.\n\nYou might not know this but your body, when healthy, supports a functioning ecosystem of bacteria in your gut that aid in digestion.\n\nYour body basically says \"I'm not right... | [] | [] | [
[]
] | ||
e4z49g | sleep paralysis demons (for someone who has never experienced sleep paralysis before). | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/e4z49g/eli5_sleep_paralysis_demons_for_someone_who_has/ | {
"a_id": [
"f9gcifp"
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"Sleep is not an on/off switch; it doesn't always work perfectly.\n\n\"Sleep paralysis\" is actually completely normal - it would be very bad for someone to be acting out everything in their dreams, so their bodies lock up and stop them from movin... | [] | [] | [
[]
] | ||
huyhv | How does something like Chantix NOT produce withdrawals/nicotine cravings if it binds to nicotine receptors? | **When stopping Chantix**.
This isn't medical advice, just a random thought. I've considered trying Chantix but I hear it's expensive and I'm a little scared of the side effects... can't be any worse than smoking though!
Anyway, thanks in advance. I love being able to ask scientists questions, I can't think of anywhe... | askscience | http://www.reddit.com/r/askscience/comments/huyhv/how_does_something_like_chantix_not_produce/ | {
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"c1ykwy5",
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"text": [
"chantix is a *partial* agonist, which means it binds to the same receptors, but doesn't elicit as strong a response. the response is weak enough that it doesn't lead to a lot of dopamine release downstr... | [] | [] | [
[],
[],
[]
] | |
2v6h6a | how come microsoft could sell windows for $100 for so long. how come cheaper os's didn't take off? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2v6h6a/eli5_how_come_microsoft_could_sell_windows_for/ | {
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"c... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[],
[],
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"http://en.wikipedia.org/wiki/X86-64",
"http://en.wikipedia.org/wiki/History_of_Linux#The_creation_of_Linux",
"http://royal.pingdom.com/2012/08/30/visopsys-operating-system/",
"http://en.wikipedia.org/wiki/Shader"
],
[],
[],
[],
... | ||
34fkg8 | How did the Supreme Court of the Soviet Union function? | The USSR had a supreme court, but there is only a two sentence blurb on its Wiki page.
What did it do?
Did it have power or was it just another tool or the party?
Did that role evolve much over the life of the USSR? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/34fkg8/how_did_the_supreme_court_of_the_soviet_union/ | {
"a_id": [
"cqufcsv"
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"score": [
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"text": [
"The Soviet Constitution of 1918 did not establish a Supreme Court as such for the fledgling Russian Socialist Federated Soviet Republic. You can find a copy of the 1918 Constitution as it was reprinted in *The Nation* in 1919 [here](_URL_0_). As ... | [] | [] | [
[
"http://debs.indstate.edu/r969r87_1919.pdf",
"http://www.departments.bucknell.edu/russian/const/1977toc.html",
"http://www.departments.bucknell.edu/russian/const/36cons03.html#chap09"
]
] | |
2grjcg | Do freeze-dried fruits have the same nutritional value as fresh fruits? | Are freeze-dried fruits less nutritious than fresh fruit? Is there any kind of damage that the freeze-drying process does?
I'm not talking dried, sugared fruits, I mean just pure fruit freeze-dried. | askscience | http://www.reddit.com/r/askscience/comments/2grjcg/do_freezedried_fruits_have_the_same_nutritional/ | {
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"cklvxyn",
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8
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"text": [
"This question depends heavily on how one defines *nutritional value*. If you mean specifically the inorganic mineral content, then the answer is flatly yes, freeze-dried fruits have the same inorganic mineral content as fr... | [] | [] | [
[],
[]
] | |
kctsj | When I was a kid I would get a strange reaction when touching an aluminum soda tab to my braces then my tongue... | What exactly was happening? Was I making a battery in my mouth? it always made a weird taste, but it was fun to 14 year old me. I would place the tab by itself on my tongue and nothing would happen, until I also touched it to my metal braces. | askscience | http://www.reddit.com/r/askscience/comments/kctsj/when_i_was_a_kid_i_would_get_a_strange_reaction/ | {
"a_id": [
"c2j8r9l",
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"score": [
2,
2
],
"text": [
"Essential, yes, you made a battery with your saliva acting as an electrolyte. Different metals have different electrode potentials causing an ion migration. This is likely what caused the weird taste as your tongue completes... | [] | [] | [
[],
[]
] | |
7ez3v2 | how do lungs work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7ez3v2/eli5_how_do_lungs_work/ | {
"a_id": [
"dq8dv7o",
"dq8eauu"
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"text": [
"A lot of it is their surface area. They also have a huge amount of elasticity. Finally there are amazing chemicals which coat the surface of the cells in the alveoli.\n\nStart with the nose and mouth. They allow air into the... | [] | [] | [
[],
[]
] | ||
i1l6z | I have a question about this article. | _URL_0_
Specifically, this paragraph:
"It's what Batmanghelidjh calls the 'chemistry of terror'. "The experience of constant fear triggers stress chemicals which act like an acid on the brain … they kill off pathways necessary for socialisation and affect working memory. [Young people] predisposed to violence as a c... | askscience | http://www.reddit.com/r/askscience/comments/i1l6z/i_have_a_question_about_this_article/ | {
"a_id": [
"c205gpd"
],
"score": [
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"text": [
"Stress hormones such as cortisol are thought to have a negative inpact on adult neurogenesis. The work of Elizabeth gould may be of interest to you.\n\n\"ELIZABETH GOULD OVERTURNED ONE OF THE CENTRAL TENETS OF NEUROSCIENCE. NOW SHE’S BUILDING O... | [] | [
"http://www.smh.com.au/world/beating-the-chemistry-of-terror-20090409-a264.html"
] | [
[
"http://www.seedmagazine.com/news/2006/02/the_reinvention_of_the_self.php?page=all&p=y"
]
] | |
ffg7b4 | What is considered the "cutoff date" for determining if a source is still relevant and not superceded by more recent research in the field? | For example, I am told that anything 20 years or older is less credible than something, say, five or ten years ago. Is that relevant in a field that may not be studied as often as others, and thus is one of the few works written on the subject matter?
The issue I have now is that I own two books: A History of Their Ow... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/ffg7b4/what_is_considered_the_cutoff_date_for/ | {
"a_id": [
"fjy7u2n",
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"text": [
"For the most general answer...there is no hard cut-off date. The general assumption is that more recent books will have up-to-date research, but that depends very heavily on the person or persons doing the research and writ... | [] | [] | [
[],
[]
] | |
6po2wp | why do americans think the usa is the best nation on earth when people from my country don't say this about our homeland? how did it develop to be socially acceptable to say this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6po2wp/eli5_why_do_americans_think_the_usa_is_the_best/ | {
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"text": [
"We are told this over and over from an incredibly young age. Americans are conditioned to believe that we are the greatest, and people ... | [] | [] | [
[],
[],
[
"https://www.nytimes.com/2015/09/23/opinion/whatever-happened-to-german-america.html"
],
[],
[],
[]
] | ||
3d8x0j | Many Eastern generals base their strategies off the teachings of Sun Tzu. Are there any Sun Tzu/Art of War counterparts in the West? | On a side note, what are some of the noticeable conflicts in ideas between the Eastern and Western approach to warfare?
Off the top of my head I can think of Cannae, where Hannibal annihilated the Romans by surrounding them. Chinese ideas seem to suggest that it's best to leave an escape route open for the enemy; as ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3d8x0j/many_eastern_generals_base_their_strategies_off/ | {
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"text": [
"Von Clausewitz is usually considered to be the great Western military theorist, but he's strictly modern, and he sticks to military theory. Sun Tzu's writings had a lot to say ab... | [] | [] | [
[],
[],
[],
[
"https://en.wikipedia.org/wiki/De_Re_Militari"
]
] | |
13enu0 | In Mathematics, how can "i" exist? Isn't the square root of -1 impossible by definition? | I've used "i" plenty of times but I never quite understood it. If there is no number such as n*n=-1, why did we invent "i" instead of saying it is impossible? Furthermore, what are the practical applications of "i"? Can such a number exist in the realm of physics or reality?
I'm sorry if the questions don't make sense... | askscience | http://www.reddit.com/r/askscience/comments/13enu0/in_mathematics_how_can_i_exist_isnt_the_square/ | {
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10,
2,
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"text": [
"You could just as easily argue that negative numbers are impossible by definition because numbers are used to count things and you can... | [] | [] | [
[],
[],
[
"http://youtu.be/BRRolKTlF6Q"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Fundamental_theorem_of_algebra",
"http://en.wikipedia.org/wiki/Quantum_amplitude",
"http://en.wikipedia.org/wiki/Surreals",
"http://mathworld.wolfram.com/ConwayGame.html",
"http://en.wikipedia.org/... | |
3ftl74 | what/how is steel tampered? why does heat makes it stronger? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3ftl74/eli5_whathow_is_steel_tampered_why_does_heat/ | {
"a_id": [
"ctrudbm"
],
"score": [
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"text": [
"Hot steel when cooled slowly is composed of large \"crystals\". This \"ordered\" structure is very stiff but not very flexible, i.e. brittle.\n\nQuenching hot steel in cold (room temperature) oil forces it to be composed of small \"crystals\". Th... | [] | [] | [
[]
] | ||
7yyl1m | Newly released video game's attempt to accurately portray ethnicity of rural Bohemia in 1403 is met with criticism in the media. Accusations due to lack of People of Colour present are made. Should a person living in countryside of Bohemia in 1403 expect to encounter people of diverse skin colours? | Developers of a video game called *Kingdom Come: Deliverance* speak of a pretty serious effort to pursue historical accuracy in their portrayal of Northern Bohemia as it was in 1403. In this game, a player takes the role of a son of a blacksmith who travels around in 16 square kilometre area between modern day Sasau ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7yyl1m/newly_released_video_games_attempt_to_accurately/ | {
"a_id": [
"duk2gce",
"duk4ehs"
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"score": [
2,
11
],
"text": [
"This has come up here quite a bit recently. [This thread](_URL_0_) may provide you with some information on the topic. ",
"This question has been asked several times recently, along with a few other questions you might ... | [] | [
"http://www.eurogamer.net/articles/2018-02-20-kingdom-come-deliverance-review"
] | [
[
"https://www.reddit.com/r/AskHistorians/comments/7v1lil/people_are_getting_extremely_upset_because_there/"
],
[
"https://www.reddit.com/r/AskHistorians/comments/7v1lil/people_are_getting_extremely_upset_because_there/",
"https://www.reddit.com/r/AskHistorians/comments/7v1lil/people_are_getting_ext... | |
ae0pak | - why, after you become proficient in a foreigner language it is still hard to understand lyrics in music? the same words you already know are hard to understand in a music. why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ae0pak/eli5_why_after_you_become_proficient_in_a/ | {
"a_id": [
"edljbdi"
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"score": [
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"text": [
"When you become fluent in a foreign language through proper teaching methods you are not a “native speaker.” You don’t understand colloquialisms or dialects. It’s the same reason a native English speaker does not understand the lyrics in metal or... | [] | [] | [
[]
] | ||
4s1zjk | If the photons take around 10,000 years to reach the outer surface from the core of the sun , was the sun dark for the first 10,000 years after nuclear fusion started to occur? | Did the sun start out much darker than now and reach its peak and then start decreasing its brightness? | askscience | https://www.reddit.com/r/askscience/comments/4s1zjk/if_the_photons_take_around_10000_years_to_reach/ | {
"a_id": [
"d564824",
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17,
2,
4
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"text": [
"No. When the Sun started fusing, it was still glowing from the energy release of slow gravitational contraction. The Sun was actually similar in luminosity before it started fusing, but slightly bright... | [] | [] | [
[],
[],
[]
] | |
3rk32g | why can some electrical appliances turn on immediately when connected to a power source (like a laptop) but others can't? (like a cellphone) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3rk32g/eli5_why_can_some_electrical_appliances_turn_on/ | {
"a_id": [
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"score": [
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"text": [
"While I'm not an expert I know the reason in some items such an iPhones (we all know that pain) is to prevent the phone losing power during boot and corrupting the memory or OS.\n\nImagine your phone was completely dead and you stuck it on charge... | [] | [] | [
[]
] | ||
5ge2al | Why do liquids form a rough sphere when there is no gravity? | Just watched a trailer for Passengers and saw the part where she was drowning in globs of water and it made me curious. | askscience | https://www.reddit.com/r/askscience/comments/5ge2al/why_do_liquids_form_a_rough_sphere_when_there_is/ | {
"a_id": [
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"text": [
"[Here](_URL_2_) and [here](_URL_0_) are pictures of water drops in weightlessness in the Int'l Space Station, so yes, you will get spherical shapes without gravity. (Probably better to look at actual pictures rather than the trailer from a film... | [] | [] | [
[
"http://spaceflight.nasa.gov/gallery/images/station/crew-8/hires/iss007e17973.jpg",
"http://hyperphysics.phy-astr.gsu.edu/hbase/surten.html",
"http://cache.boston.com/universal/site_graphics/blogs/bigpicture/iss_11_24/i18_13569.jpg"
]
] | |
2nev7x | Why does the Kremlin in Russia have Arabic-style round towers? | Something I never understood. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2nev7x/why_does_the_kremlin_in_russia_have_arabicstyle/ | {
"a_id": [
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"text": [
" > It's kind of the other way around. The building you have in mind is actually [St. Basil's Cathedral](_URL_1_), which was built in the mid-16th century. However, the use of large towers with rounded domes goes back to a... | [] | [] | [
[
"http://english.masjed-alkufa.net/news.php",
"http://en.wikipedia.org/wiki/Saint_Basil%27s_Cathedral",
"http://upload.wikimedia.org/wikipedia/commons/a/a2/Kufa_Mosque%2C_1915.jpg"
],
[
"http://ruhistory.narod.ru/mocsow/kremlin_index.jpg",
"http://www.reddit.com/r/AskHistorians/comments/1gb... | |
9cpixr | if i pull a plug from an outlet does the electricity instantly disappear, if so why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9cpixr/eli5_if_i_pull_a_plug_from_an_outlet_does_the/ | {
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"e5cblgp",
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"score": [
11,
7,
6
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"text": [
"It doesn't really disappear. In fact, the electrons that were just flowing through your appliance are still there, but with less motion now. When the circuit is cut off, the electrons simply stop movin... | [] | [] | [
[],
[],
[]
] | ||
20ri1f | how large was the universe post inflation at 10^-32 seconds? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20ri1f/eli5_how_large_was_the_universe_post_inflation_at/ | {
"a_id": [
"cg61kyk"
],
"score": [
2
],
"text": [
"Can you give me that number in planks?"
]
} | [] | [] | [
[]
] | ||
1ly08w | Were mercenaries used during the American Civil War? | If so, how were they used and where can I find out more about them? If not, were mercenaries used in any other United States wars? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ly08w/were_mercenaries_used_during_the_american_civil/ | {
"a_id": [
"cc405cs",
"cc458qu"
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"score": [
26,
2
],
"text": [
"Of a kind. \n\nIn 1861, Congress approved a bounty of $100 to be paid to every man who enlisted in the Union Army for a term of three years. This sum was not paid until the end of the enlistment or the end of the war.\n\nIn... | [] | [] | [
[
"http://www.cincinnaticwrt.org/data/ccwrt_history/talks_text/moffat_soldiers_pay.html"
],
[]
] | |
1trbdu | Does moore's law extend to technology before computers? If not, is there any sort of trackable "trend" in technology? Has it always been moving forwards? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1trbdu/does_moores_law_extend_to_technology_before/ | {
"a_id": [
"ceaq4vn"
],
"score": [
2
],
"text": [
"I am a chemist who occasionally talks about the history behind chemistry when teaching various subjects... So although I can't answer to Moore's law, but I do have some insight into technology and scientific advancement.\n\nFrom a scientific poin... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Rutherford%27s_Model",
"http://en.wikipedia.org/wiki/Mendelev",
"http://en.wikipedia.org/wiki/Plum_pudding_model",
"http://en.wikipedia.org/wiki/Niels_Bohr",
"http://en.wikipedia.org/wiki/Bohr_model"
]
] | ||
tj9mq | What is AskHistorian' opinion of Fomenko's New Chronology? | [This](_URL_0_) is what I am referring to.
Could it hold any significant validity, or is it really just nationalistic fringe theory? Why? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/tj9mq/what_is_askhistorian_opinion_of_fomenkos_new/ | {
"a_id": [
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"score": [
6,
8,
7
],
"text": [
"It's a fringe theory. A cursory look at the Wikipedia article shows how often Fomenko and his ilk resort to anomaly hunting to justify their \"theory.\" I mean, Fomenko's rejection of Carbon dating is p... | [] | [
"http://en.wikipedia.org/wiki/New_Chronology_\\(Fomenko\\)"
] | [
[],
[],
[
"http://upload.wikimedia.org/wikipedia/en/0/07/Fomenko_-_Roman_Empire_parallelism.jpg"
]
] | |
eokmbg | how does my car know to stop playing my music and switch to fm radio when traffic updates come on? | Like I'm assuming theres some voodoo in the airwaves? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eokmbg/eli5_how_does_my_car_know_to_stop_playing_my/ | {
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7,
4,
4,
14,
2
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"text": [
"Radio checks your last tuned frequency for a special signal that you can't hear, like a very high beep noise, every second. If the rad... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
3vsd6n | Saint Paul and his impact on the early Christian church - biography? | I've come rather interested in the establishment and transformation of the early Christian church, from ressurection through to the 300s and Constantine's alleged death bed adoption of the religion.
One difficult area I've found in my understanding (well, one of he largest) is understanding the impact of Saint Paul. ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3vsd6n/saint_paul_and_his_impact_on_the_early_christian/ | {
"a_id": [
"cxqc0if",
"cxqcj7k"
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"score": [
6,
5
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"text": [
"The best book for you is Harrill's [*Paul the Apostle*](_URL_0_). It's a great primer on Paul but he also discusses the influences on Paul's teaching and Paul's reception.",
"You might like Sarah Ruden's [Paul Among the ... | [] | [] | [
[
"http://www.amazon.com/Paul-Apostle-Legacy-their-Context/dp/0521757800/ref=sr_1_1?ie=UTF8&qid=1449503349&sr=8-1&keywords=paul+the+apostle+harrill"
],
[
"https://www.goodreads.com/book/show/7738312-paul-among-the-people"
]
] | |
443g3l | Is there a specific volume a dangling water droplet has to exceed before it falls? Does the volume vary depending on the material or shape of the surface? | askscience | https://www.reddit.com/r/askscience/comments/443g3l/is_there_a_specific_volume_a_dangling_water/ | {
"a_id": [
"czn6vo7"
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"score": [
3
],
"text": [
"Yes. The volume depends on the force against the surface tension. With water droplets, this usually means the downward force (gravity) against the upward force(water surface tension). The downward force increases as the mass and volume increase,... | [] | [] | [
[]
] | ||
7y8q38 | why can't modern browsers like safari tell me how large the zip file that i am downloading is? | Every time I am downloading a GitHub zip of a project I am working on, safari never knows how large the zip file is, why is this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7y8q38/eli5why_cant_modern_browsers_like_safari_tell_me/ | {
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"Chrome does not show the size either. If I am not misstanke the reson \nis that size information is optional in HTTP. There is a good reson that is is optional because HTML code ... | [] | [] | [
[],
[],
[
"https://chrome.google.com/webstore/detail/github-repository-size/apnjnioapinblneaedefcnopcjepgkci?hl=en"
],
[
"https://en.wikipedia.org/wiki/Network_packet"
]
] | |
2ul2df | Why do gas giants have "hard" edges? | Being that what we actually see when we look at a gas giant is the atmosphere, I'm wondering why they look the way they do. If you were to take a cross section of a planet's atmosphere, it would thin gradually as you got further away from the center of mass. There would not be a threshold where atmosphere existed below... | askscience | http://www.reddit.com/r/askscience/comments/2ul2df/why_do_gas_giants_have_hard_edges/ | {
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"Short version: the edges *are* a bit fuzzy, but because gas giants are so mind-bogglingly huge, you can't really tell without high-resolution photos.\n\nLong version: When you see the \"surface\" of a gas giant, what you're seeing is light that ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Scale_height",
"http://en.wikipedia.org/wiki/Rayleigh_scattering",
"http://upload.wikimedia.org/wikipedia/commons/a/ac/PIA04866_modest.jpg",
"http://spaceflight.nasa.gov/station/crew/exp7/luletters/lu_letter5.html",
"https://www.flickr.com/photos/nasamarshall/4971... | |
1l9vdn | how do "anti-aging" and "firming" creams work? if they don't work, how do the companies justify their claims? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1l9vdn/eli5_how_do_antiaging_and_firming_creams_work_if/ | {
"a_id": [
"cbx536g"
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"score": [
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"text": [
"They don't justify their claims by simply not making any claims which are legally enforceable."
]
} | [] | [] | [
[]
] | ||
28jo2j | Is there truth to the notion that the CIA actually had little to do with the overthrow of Iran's shah in 1953? | As reported in [this Reuters story](_URL_0_) that quotes Iranian historian Ray Takeyh?
Edit - I meant PM, this was before coffee. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/28jo2j/is_there_truth_to_the_notion_that_the_cia/ | {
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"text": [
"No, there is very little truth to this. \n\nThe Iranians nationalized British oil assets in the late 40s/early 50s. The Iranians had a democratic process for their government whi... | [] | [
"http://blogs.reuters.com/great-debate/2014/06/19/us-iran-relations-when-history-isnt-history-after-all/"
] | [
[],
[],
[
"http://www.worldaffairsjournal.org/article/spook-story-what-really-happened-mossadeq"
],
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"http://www2.gwu.edu/~nsarchiv/NSAEBB/NSAEBB435/",
"http://www.foreignaffairs.com/articles/141527/ray-takeyh/what-really-happened-in-iran"
]
] | |
2qp6wd | why don't airplanes fly lower? wouldn't it save time, and have less turbulence? is it for the sole purpose of less air resistance? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2qp6wd/eli5_why_dont_airplanes_fly_lower_wouldnt_it_save/ | {
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"text": [
"generally there is less turbulence the higher you go. It would not save time because it's much harder to fly fast at lower altitudes. ",
"Air resistance is a huge factor, It could also be about the noise they make but ... | [] | [] | [
[],
[]
] | ||
rf7eo | why are we all mad at ea games? | I can never seem to express this opinion in words. I just know I'm supposed to be mad as hell. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/rf7eo/eli5_why_are_we_all_mad_at_ea_games/ | {
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"I can't speak for all EA games but they completely eliminated all competition with Madden ... | [] | [] | [
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e8vrel | why do vocal harmonies of older songs sound have that rich, "airy" quality that doesn't seem to appear in modern music? (crosby stills and nash, simon and garfunkel, et al) | I'd like to hear a scientific explanation of this!
[Example song](_URL_0_)
I have a few questions about this.
I was once told that it's because multiple vocals of this era were done live through a single mic (rather than overdubbed one at a time), and the layers of harmonies disturb the hair in such a way that it cau... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/e8vrel/eli5_why_do_vocal_harmonies_of_older_songs_sound/ | {
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"faew6yj",
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"faf390m",
"faf3wjv",
"faf3zto",
"faf40dq",
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"faf6y8k",
"faf7kb9",
"faf7yiq",
"faf8jpi",
"faf8pvg",
"faf8wq6",
"faf9oar",
"fafaaii",
"f... | [] | [
"https://youtu.be/C7HP9Xkim9o"
] | [
[
"https://podcasts.apple.com/us/podcast/twenty-thousand-hertz/id1171270672?i=1000450841062"
],
[],
[],
[],
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"https://www.youtube.com/watch?v=Wl_eNu4NUVI"
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"https://youtu.be/gpvzmKe3RJk"
],
[],
[],
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[],
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[... | |
1pl1ys | why old war footage always appears to be in fast forward. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1pl1ys/eli5_why_old_war_footage_always_appears_to_be_in/ | {
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"text": [
"cause it's filmed at a low framerate. we play it at 24 or higher framerate so it's smooth. otherwise it'd look jittery. ",
"I believe this results from capturing film at a frame rate lower than the frame rate at whic... | [] | [] | [
[],
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] | ||
2d146o | is the top liquid in a hot coffee cup hotter or colder than the bottom? | My wife and I can not agree if the top coffee in a coffee cup is hotter or colder than the bottom, can anyone help resolve this issue? I say it is hotter, based on my limited knowledge of convection. The hotter coffee rises, cools slightly, then falls to the bottom of the cup, it is replaced by relatively warmer coffe... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2d146o/eli5is_the_top_liquid_in_a_hot_coffee_cup_hotter/ | {
"a_id": [
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"score": [
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"text": [
"The upper part is able to lose heat much more quickly to its surroundings, cooling it down more than the bottom part."
]
} | [] | [] | [
[]
] | |
3lavgo | I'm wealthy aristocrat living in Republican Rome with some 'unconventional' desires. Is there anything to keep me from buying a bunch of slaves for some masochistic rape-torture session? | Like the title says. Was there any sort of law or convention keeping wealthy Republican Romans -aristocratic or Equestrian- from letting their inner Ramsay Bolton loose on some slaves? If such a individual wanted to torture and rape some people, or play a little 'Most Dangerous Game' on his land with some slaves, would... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3lavgo/im_wealthy_aristocrat_living_in_republican_rome/ | {
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"text": [
"What you're talking about is pretty much the story of Vedius Pollio, a rich equestrian master who was famous for his \"excessive cruelty\" to his slav... | [] | [] | [
[
"http://penelope.uchicago.edu/~grout/encyclopaedia_romana/wine/pollio.html",
"https://en.wikipedia.org/wiki/Moray_eel"
],
[],
[],
[],
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"https://www.reddit.com/r/AskHistorians/comments/28fwwv/did_roman_slaves_have_to_be_tortured_before_their/"
]
] | |
1ov77o | why doesn't our dna mix with blood donors' dna and change our dna? | **EDIT**: Thank you all for your replies (even the meanie). I don't have a science background so that explains why my question seems "dumb." Thanks again. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ov77o/eli5_why_doesnt_our_dna_mix_with_blood_donors_dna/ | {
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"First of all, red blood cells, which is the largest part of the blood you receive, have no DNA at all.\n\nSecond, unless you are some types of bacteria which are designed to incorporate foreign DNA, you... | [] | [] | [
[],
[],
[]
] | |
2rshjv | How rapidly did the New England whaling industry transition from sail to engine-based vessels? | I imagine the benefits for engine-based whaling outweighed the high initial cost of transitioning from sail, but I would love to hear more about this transition.
Were there hold-outs who clung to sail, or was it universally seen as a beneficial transition? Were some locations, like New England, faster to make the tra... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2rshjv/how_rapidly_did_the_new_england_whaling_industry/ | {
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"When steam power was being applied to whaling vessels in the mid-19th Century, it was a development of economic necessity after hundreds of years of traditional whaling methods. The right whale have been hunted since our earliest records of a wha... | [] | [] | [
[
"http://www.whalingmuseum.org/explore/library/bibliographies/whaling-19th-century-american-literature",
"http://www.whalingmuseum.org/"
]
] | |
99vhyv | how are purchases correctly identified as fraudulent by credit card companies when there is nothing “unusual” about them? | By nothing unusual, I mean a charge within a spender’s typical budget amount and relative location. This happened to me recently, and in discussing my relief with friends, they also mentioned having charges correctly flagged by credit card companies.
Conversely, if a person is traveling and a card doesn’t require tra... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/99vhyv/eli5_how_are_purchases_correctly_identified_as/ | {
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"score": [
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"text": [
"Kind of like data mining. Some companies will alert you if you buy something off a new website, or if the website is frequented by hackers. Let’s say you buy a bike online for $130. $130 isn’t that much... | [] | [] | [
[],
[
"https://monzo.com/blog/2018/06/28/ticketmaster-breach/"
],
[]
] | |
doksei | how does popcorn lose calories when it pops? | Every bag of microwave popcorn I've seen always shows something along the lines of 200 cals/serving unpopped and 50 cals/serving popped. How is this possible? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/doksei/eli5_how_does_popcorn_lose_calories_when_it_pops/ | {
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"text": [
"The serving size for popcorn is probably in cups, and popped corn is much less dense than the unpopped kernels. Lesser kernels in the same amount of space = less calories.\n\nEdit: grammar",
"A ca... | [] | [] | [
[],
[],
[
"https://i.imgur.com/2neBq0k.png"
]
] | |
9zcsv1 | Standing waves in space? | When you put a bowl of water or sand on a subwoofer, you will get beautiful stort of standing waves.
Were there experiments performed, where water bubbles in weightlessness were exposed to similar stimulation?
I was thinking of it, as experiments like that could contribute to our understanding of the atomic structure,... | askscience | https://www.reddit.com/r/askscience/comments/9zcsv1/standing_waves_in_space/ | {
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"There are a lot of experiments that involve watching falling droplets and looking at their surface oscillation modes. As they are falling they are effectively weightless (except for air resistance). Here is an example, e.g. figure 3. _URL_3_\n\nE... | [] | [] | [
[
"https://gfm.aps.org/",
"https://gfm.aps.org/meetings/dfd-2018/5b9b12f2b8ac3105e5ac8e8a",
"https://www.youtube.com/watch?v=bKk_7NIKY3Y",
"https://pure.tue.nl/ws/files/53358500/art_3A10.1007_2Fs00348_016_2284_8.pdf"
]
] | |
3ui106 | Were there any high ranking Nazi officials who had children or close relatives with a disability who would have been euthanize if not for their position? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ui106/were_there_any_high_ranking_nazi_officials_who/ | {
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"text": [
"Even if they did care about the situation of their family members the problem was that many of these children or close relatives were already in institutions before the killings started. The handicaps, disorders, or other conditions were alread... | [] | [] | [
[
"http://www.welt.de/kultur/literarischewelt/article114390776/Wie-Eltern-ihre-Kinder-in-den-Tod-schickten.html",
"http://www.ev-kirche-esslingen.de/geschichtliches/euthanasie-in-esslingen/",
"http://m.zdf.de/ZDF/zdfportal/xml/object/5907354"
]
] | ||
u392u | If astrology was not older than astronomy and astrophysics, would one of them be more fittingly called astrology? | I hope the title is clear enough but ask if you need any clarifications. | askscience | http://www.reddit.com/r/askscience/comments/u392u/if_astrology_was_not_older_than_astronomy_and/ | {
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"text": [
"Interestingly, according to the [Online Etymology Dictionary](_URL_0_) the term astronomy actually predates astrology and originally astrology was part of astronomy. I'm not sure if that helps with your question."
]
} | [] | [] | [
[
"http://www.etymonline.com/index.php?term=astronomy"
]
] | |
7g6e3l | What did the "barbarians" (Goths, Vandals, Huns, etc) think of Roman engineering achievements? Did they value aqueducts/roads etc, attempt to maintain them in conquered cities? | I've been reading about Roman history lately, and it's interesting (though unsurprising) how hard it is to find the barbarian POV on events.
I know it can be hard to find information like this, but I'm really wondering what the various tribes who started sacking Rome and other major cities towards the end of the West... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7g6e3l/what_did_the_barbarians_goths_vandals_huns_etc/ | {
"a_id": [
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3,
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"text": [
"Rather than issues with engineering and technology, the constraints on monumental architecture in the post-Roman era were more organizational, economic, and even cultural. Indeed, at the level of society, politics, and techn... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/4fn3r9/italian_history_how_did_the_republic_of_venice/d2cdfwh/",
"https://www.reddit.com/r/AskHistorians/comments/7d3ncw/who_are_the_ethnical_successors_of_the_ostrogoths/",
"https://www.reddit.com/r/AskHistorians/comments/7dbcdp/did_anybody_in_the_high... | |
73nyix | how did bangladesh come about | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/73nyix/eli5how_did_bangladesh_come_about/ | {
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"text": [
"From the 19th century it was part of British India. \n\nWhen India gained independence from Britain it was split in two, broadly along religious lines. The mainly Hindu parts became India and the mainly Muslim parts became Pakistan.\n\nPakistan w... | [] | [] | [
[]
] | ||
dvvisg | what exactly are my cable modem and router doing in the minute after being reset? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dvvisg/eli5_what_exactly_are_my_cable_modem_and_router/ | {
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"text": [
"Booting. \nThey both run some form of linux. And, frankly, neither will have many hampsters under the hood CPU wise for computing power (you don't need a massive CPU for essentially packet shovelling), so booting up - even a... | [] | [] | [
[],
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3ba6xj | What is the deal with safe drinking water? | Please don't tell me I should be fine with tap, call me an idiot for considering distilled, or laugh at me for even asking the question. It honestly seems like nobody has a solid answer to the question "What is the safest form of drinking water?".
Google search results led to varying opinions, jokes, obvious astrotur... | askscience | http://www.reddit.com/r/askscience/comments/3ba6xj/what_is_the_deal_with_safe_drinking_water/ | {
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"text": [
"If you are in the United States, public and municipal water is required to be safe to drink and undergoes regular contamination testing. (via EPA and Safe Water Drinking Act _URL_2_ and any additional state regulation) You ... | [] | [] | [
[
"http://www.tucsonaz.gov/water/wqreport",
"http://www.tucsonaz.gov/files/water/docs/ccr2014.pdf",
"http://water.epa.gov/lawsregs/rulesregs/sdwa/"
],
[]
] | |
11a2nr | Would a warp drive result in time travel? | Recently I heard about the possibility of a warp drive being feasible. It claimed you could "move faster than the speed of light" by compressing spacetime in front of you and expanding behind you, while never exceeding light speed. I was thinking though, would this result in time travel as you are arriving before, say ... | askscience | http://www.reddit.com/r/askscience/comments/11a2nr/would_a_warp_drive_result_in_time_travel/ | {
"a_id": [
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"text": [
" > Recently I heard about the possibility of a warp drive being feasible. \n\nYou heard incorrectly. There has been a lot of talk recently about someone at NASA apparently showing that warp drives are now a possibility, but that's really a mischa... | [] | [] | [
[
"http://www.reddit.com/r/askscience/comments/103mwp/despite_the_media_reporting_nasas_claim_that_warp/",
"http://www.reddit.com/r/askscience/comments/101b4u/could_someone_explain_the_alcubierre_warp_drive/",
"http://www.reddit.com/r/askscience/comments/1046ug/how_does_a_real_life_warp_drive_work_how_c... | |
4kmuf2 | how much would a bullet have to travel to do no damage to a human, or for us to catch it. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4kmuf2/eli5how_much_would_a_bullet_have_to_travel_to_do/ | {
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"text": [
"Depends how fast it started out at, and all of its ballistic characteristics. Generally though it's going to be lethal at any distance it can reach in the air.",
"Pretty sure the only way to catch a bullet between gun an... | [] | [] | [
[],
[]
] | ||
mi89h | how tv channels work | how do they profit , through adds?
and do they need to pay royalties to show movies...? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/mi89h/eli5_how_tv_channels_work/ | {
"a_id": [
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"text": [
"Different channels make $ in different ways. \nHome Shopping Networks actually pay cable/satelite carriers to be on their lineup. Some networks like ESPN charge a premium to the Cab/Sat providers because people demand thei... | [] | [] | [
[],
[]
] | |
1obtb7 | There's a running joke that we still speak English in the US because Germany lost WWII. Are there any instances of two major powers (for their time period) fighting a major war, and the loser adopting the language and/or customs of the victor? | I know that colonized countries will adopt the language of it's new leader. And indigenous peoples being forced to adopt the language of the newcomers. But what about major wars between two relatively advanced nations? Would the US, England, France, etc have been forced to adopt German? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1obtb7/theres_a_running_joke_that_we_still_speak_english/ | {
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49,
21,
4,
9
],
"text": [
"Norman Conquest of England. It's thought that up to about 30% of English words have a French origin. Its hard to exactly pin down because English has such a huge vocabulary. A... | [] | [] | [
[],
[],
[],
[]
] | |
20u7ud | what is happening since antibiotics are going to stop working for us? | Also I have never been on antibiotics, which might contribute to me not getting it, even thought I know what antibiotics is. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20u7ud/eli5_what_is_happening_since_antibiotics_are/ | {
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"text": [
"The problem is... evolution. We've used antibiotics so much that, if things continue, only antibiotic-resistant germs will survive and reproduce. We can keep coming up with new antobiotics, but the cycle will just keep repeating unless we manage ... | [] | [] | [
[]
] | |
4mciru | why do females ejaculate during intercourse? | Uh, yea. as an adult i still don't know why females have to ejaculate. Men do it because of sperm and pregnancy and all but, why do women do it to? sheesh embarrasing question | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4mciru/eli5why_do_females_ejaculate_during_intercourse/ | {
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"text": [
"Actually, I think this is a really good question.\n\n[The Truth About Female Ejaculation](_URL_0_)\n\n > Since 2000, an increasing number of researchers have suggested the liquid may come from the Sken... | [] | [] | [
[
"http://www.everydayhealth.com/sexual-health/dr-laura-berman-truth-about-female-ejaculation.aspx",
"http://www.sciencealert.com/here-s-where-female-ejaculation-comes-from-and-what-it-s-made-of"
],
[
"https://www.researchgate.net/profile/Zlatko_Pastor/publication/236601214_Female_Ejaculation_Orgasm... | |
2yewnw | if we saw something happen 10 light years away and then switched lenses to 9.99 years could we watch it again? | So what I mean is, a lens that can see up to 10 ly, and then switch to a lens that could only see 9. In a year could I see the same thing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2yewnw/eli5if_we_saw_something_happen_10_light_years/ | {
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],
"text": [
"That's not how that works at all. 10 light years is the distance light travels in 10 years in a vacuum. Once the light reaches us, that's it, it's not like it's an instant replay on TV that you can rewind. "
]
} | [] | [] | [
[]
] | |
beii9g | how does the youtube 'recommend' work? | I've been noticing recently that some videos in my recommend are also appearing in other people's recommends (based on the comments), as we are all flocking to the same video at the same time (even if it is not a new video). Why/how are random videos entering people's recommend algorithms at the same time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/beii9g/eli5_how_does_the_youtube_recommend_work/ | {
"a_id": [
"el64zkk"
],
"score": [
3
],
"text": [
"Exactly how it work is kept secret by google to make it harder to manipulate.\n\nA part of how it work depend in correlation between you and other people. If you and another person both have watched the same videos and the perhaps given the same ... | [] | [] | [
[]
] | |
2dliry | why is bottled water often more expensive than coke (or other fizzy drinks) which, as well as containing water, contain lots of ingredients which need to be bought and paid for while water is just, water? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dliry/eli5why_is_bottled_water_often_more_expensive/ | {
"a_id": [
"cjqn40o",
"cjqn9jj",
"cjqp26v",
"cjqp7v3",
"cjqsfn0"
],
"score": [
11,
19,
2,
11,
2
],
"text": [
"Supply and demand. There is a higher demand for clean, good tasting, portable water than there is for soda. As such it can command a higher price. The addi... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
dj47hm | "Slavery is right because is in the Bible." Was this in Medieval Europe the main argument used to justify the enslavement of people? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/dj47hm/slavery_is_right_because_is_in_the_bible_was_this/ | {
"a_id": [
"f7pg3u1"
],
"score": [
6
],
"text": [
"It was certainly \\*one\\* argument, but definitely not the main one. \n\nJust for some background, there were lots of different types of law in the Middle Ages, and they all dealt with slavery in different ways. Some places still used the compil... | [] | [] | [
[]
] | ||
67vo47 | why will the new tax plan work/not work? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/67vo47/eli5why_will_the_new_tax_plan_worknot_work/ | {
"a_id": [
"dgtnvj3"
],
"score": [
2
],
"text": [
"OK. So taxes are required to pay for government services. There are 2 ways to increase government revenue, you can increase the % that people pay in tax (through the elimination of deductions and credits or simply raising the rates) or you can ... | [] | [] | [
[]
] | |
246mmk | why do i hear non-existant noices when it's quiet? | It can be from games I play from time to time, for example. I guess there can be some kind of "You're used to the sound" explanation, but it still seems pretty odd.
Edit: To clarify, I can differ from "real" noices and non-existant ones. If I focus on a sound which isn't really there, I can't hear it anymore. It's lik... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/246mmk/eli5_why_do_i_hear_nonexistant_noices_when_its/ | {
"a_id": [
"ch46bk4"
],
"score": [
3
],
"text": [
"You've finally gone insane."
]
} | [] | [] | [
[]
] | |
9o822y | why do some terminal patients appear to show a marked improvement toward the end, within days of ultimately succumbing (especially cancer patients)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9o822y/eli5_why_do_some_terminal_patients_appear_to_show/ | {
"a_id": [
"e7s4qy9",
"e7s5xnj",
"e7siyqs",
"e7sjcrx",
"e7trsyx"
],
"score": [
53,
26,
12,
17,
6
],
"text": [
"The term for it is \"Terminal lucidity\" and we don't have a great grasp of why it happens. The explanation I've heard is that it is the body burning eve... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
6qn2pv | In the Battle of Britain, why did Germany switch tactics away from trying to destroy the RAF, and instead try to destroy civilian moral in the Blitz? | What the above question says really. From what I know the Luftwaffe was close to victory, but at the last moment switched strategies. Just wandering why. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6qn2pv/in_the_battle_of_britain_why_did_germany_switch/ | {
"a_id": [
"dkylwfp"
],
"score": [
7
],
"text": [
"The idea that the Luftwaffe was close to victory in the Battle of Britain is largely a myth and in reality the RAF while being battered and under substantial pressure was no where near the brink of collapse. This is largely due to the incorrect e... | [] | [] | [
[]
] | |
10kv0y | Geologists: How were these rocks formed at this angle, creating the illusion of the water not being level (Ardèche, France)? | Sorry for the poor phrasing, here are two pictures: _URL_0_
| askscience | http://www.reddit.com/r/askscience/comments/10kv0y/geologists_how_were_these_rocks_formed_at_this/ | {
"a_id": [
"c6ec0u3"
],
"score": [
5
],
"text": [
"not a geologist, but as tectonic plates shift rocks will get pushed up forming entire mountains. the sedimentary lines of these mountains will be on an angle like that shown in your picture\n"
]
} | [] | [
"http://imgur.com/a/g0gR9"
] | [
[]
] | |
ct31dy | why do people smoke and not just wear nicotine patches, which don't cause harm to your lungs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ct31dy/eli5_why_do_people_smoke_and_not_just_wear/ | {
"a_id": [
"exi9850",
"exi9bw1",
"exiazql",
"exidb37"
],
"score": [
15,
8,
3,
2
],
"text": [
"People become addicted not just to the nicotine, but to other aspects of smoking: the feeling of smoke in the lungs, the taste of the tobacco, the ritual of \"lighting up\", etc."... | [] | [] | [
[],
[],
[],
[]
] | ||
86z4zq | Can spectroscopic measurments distinguish between a gas of atomic hydrogen and one of molecular hydrogen (H2)? If so, how? | askscience | https://www.reddit.com/r/askscience/comments/86z4zq/can_spectroscopic_measurments_distinguish_between/ | {
"a_id": [
"dw93jju"
],
"score": [
9
],
"text": [
"Yes, molecular hydrogen has a load of molecular vibration energy levels in addition to the atomic spectra lines.\n\nThis smears the spectral lines out as each transition can include any mixture of electron energy and vibrational energy.\n\n_URL_0... | [] | [] | [
[
"http://astronomy.nju.edu.cn/~lixd/GA/AT4/AT404/HTML/AT40403.htm"
]
] | ||
2ds7ta | How do heavier-than-air gases end up in the atmosphere? | I know that carbon dioxide is hevier than air. How did it get into the atmosphere? | askscience | http://www.reddit.com/r/askscience/comments/2ds7ta/how_do_heavierthanair_gases_end_up_in_the/ | {
"a_id": [
"cjsld2i"
],
"score": [
4
],
"text": [
"What you are wondering about is why there is no stratification of the atmosphere. This is the idea that due to gravity, the constituent molecules of the atmosphere should arrange themselves in layers by mass. The process that keeps the atmosphere... | [] | [] | [
[]
] | |
2gjuls | i know how a rainbow is formed...but what determines the size of the arch or 'circumference' of it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2gjuls/eli5_i_know_how_a_rainbow_is_formedbut_what/ | {
"a_id": [
"ckjsbv2",
"ckjseeu",
"ckjsks3",
"ckjtsxl",
"ckjtwxr",
"ckjuo40",
"ckjuwcy",
"ckjvl1j",
"ckjvtlx",
"ckjw2j9",
"ckjziv8",
"ckk214k",
"ckk2pnv",
"ckk37qa",
"ckk3r1u",
"ckkcvfn"
],
"score": [
120,
787,
10,
13,
25,
3,
... | [] | [] | [
[],
[],
[
"http://astrobob.areavoices.com/astrobob/images/thumbnail/RainbowdiagramUWSTOUTmodified.jpg"
],
[],
[
"http://ocw.mit.edu/courses/physics/8-02-electricity-and-magnetism-spring-2002/video-lectures/lecture-31-rainbows/"
],
[],
[
"https://www.youtube.com/watch?v=JcE3TaMg0Z0#t=2870... | ||
80gk7n | How many frequencies can we reliably send across fiber cables? | If I've understood it correctly, fiber optic takes advantage of the fact that light can "co-exist" with different frequencies at the same time. With this, we can thus send multiple signals across a fiber cable at the same time by using different frequencies. How accurate can we detect these different frequencies? And h... | askscience | https://www.reddit.com/r/askscience/comments/80gk7n/how_many_frequencies_can_we_reliably_send_across/ | {
"a_id": [
"duxoqju"
],
"score": [
2
],
"text": [
"The answer depends on the quality of the cable and the inline amplifiers, and of course the multiplexing gear at each end.\n\n[This](_URL_0_) blog suggests that a high end arrangement is 96 channels, 50GHz apart, with 100 Gb/s per channel. \n"
... | [] | [] | [
[
"https://www.neophotonics.com/what-is-dwdm-and-why-is-it-important/"
]
] | |
krijb | How exactly does a myelin sheath propagate an action potential? | It is known that an action potential travels faster down a neuron with a myelinated axon compared to an unmyelinated one. However, how exactly does the myelin sheath conduct the action potential?
I've heard two things but don't know which is true
1. The myelin sheath allows for electrons to get excited along the plas... | askscience | http://www.reddit.com/r/askscience/comments/krijb/how_exactly_does_a_myelin_sheath_propagate_an/ | {
"a_id": [
"c2mlzgq",
"c2mlzgq"
],
"score": [
2,
2
],
"text": [
"In order for the least amount of electrical signal loss over the distance of a propagating action potential you want very high resistance on the cell membrane, but low resistance within the axon itself. Myelin acts as an alm... | [] | [] | [
[],
[]
] |
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