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6f6hli
why do countries have gold reserves?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6f6hli/eli5_why_do_countries_have_gold_reserves/
{ "a_id": [ "difv7mq" ], "score": [ 7 ], "text": [ "Imagine for a minute you're a nation. The nation across the ocean wants to buy some cruise missiles from you, and they want to pay you 12 billion Flerbos for the pleasure.\n\nThe first question that should come to mind is this: **What the f__k is...
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1dqrjt
How much did the Moorish people mix with the Spaniards over the time in which they ruled over them?
I ask this because many people like to make the claim that a considerate amount of Spaniards do have some Moorish blood in them simply because it seemed very unlikely that they could be ruled over by another group of people for over 700 years without any race mixing going on.
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1dqrjt/how_much_did_the_moorish_people_mix_with_the/
{ "a_id": [ "c9syhxv" ], "score": [ 2 ], "text": [ "This a great question! The answer is a complex one. First during the time you are talking about 711-1492, the category/ethnicity of \"Spaniard\" had only just begun to crystalize (at the time of the Umayyad invasion it was non-existant). Second, ...
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1jrx5d
At what point did History become something that the average person knew about?
While I understand that stories are always passed down in various cultures, when did it become common place to learn about history? At what point did, say, a Japanese person learn about the Vikings?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1jrx5d/at_what_point_did_history_become_something_that/
{ "a_id": [ "cbhsikh" ], "score": [ 38 ], "text": [ "Well, there are a lot of aspects to your question that make it complicated to answer at face value. Obviously we need to draw a line between the modern field of history and the nebulous awareness and discussion of past events that has always be...
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818o5g
Any literature recommendation on "retro" or "nostalgia" throughout history?
There are already a bunch of posts I've found on this subreddit that talk about the subject, (like [these](_URL_1_) [two](_URL_0_) that really caught my eye) but it would be very interesting to ask if there's a more general, academic interpretation regarding the cultural phenomenon of "retro", or "nostalgia". In genera...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/818o5g/any_literature_recommendation_on_retro_or/
{ "a_id": [ "dv6d9bo" ], "score": [ 2 ], "text": [ "So, as you mentioned, a romanticized view of ancient Greece was an important source of nostalgic longing for an idealized past that you see occurring throughout European history, especially in Italy. When this looking back took on an especially n...
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[ "https://www.reddit.com/r/AskHistorians/comments/2rsjq1/we_distinguish_the_differences_between_the/cnj0vf4/", "https://www.reddit.com/r/AskHistorians/comments/3lfuvp/was_1950s_nostalgia_really_that_popular_in_the/" ]
[ [] ]
2goft2
what was ancient civilization's knowledge of volcanoes?
When a volcanoe erupted, I'd assume ancient people freaked the hell out. A mountain was exploding and fire water was flowing out of it! Did they see it as a work of Gods? Did they then assume that any mountain could start exploding out of no where? Or did they have some sort of approximate knowledge on how volcanoes wo...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2goft2/what_was_ancient_civilizations_knowledge_of/
{ "a_id": [ "ckl2hvs" ], "score": [ 6 ], "text": [ "Pliny the Younger wrote two letters about the eruption of Mount Vesuvius, which he witnessed. They're letters 6.16 and 6.20.\n\nThough my Latin ability has faded, to the extent that it ever existed, and I'm therefore unable to tell you the qualit...
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[ [ "http://www.u.arizona.edu/~afutrell/404b/web%20rdgs/pliny%20on%20vesuvius.htm" ] ]
21tc2j
why doesn't it matter that an ssd is fragmented?
I checked for fragmentation on my SSD and external HDD, when my classmate said that fragmentation on an SSD doesn't really matter. After some googling, I found that he was right, but I'm not entirely sure why. Something about how the disk reads and writes the data?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/21tc2j/eli5_why_doesnt_it_matter_that_an_ssd_is/
{ "a_id": [ "cggb80f", "cggb8l2", "cggb8n9", "cggbjwo", "cggcjko", "cggdigp" ], "score": [ 11, 2, 6, 7, 2, 4 ], "text": [ "Fragmentation causes problems with a normal hard drive because the drive has to take time to move a physical head from the location of ...
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[ [], [], [], [], [], [] ]
1pviq8
moles (not the animal)
So I know how to use moles (stoichiometry) but I don't really understand what a mole represents. If you could explain that to me that'd be great!
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1pviq8/eli5_moles_not_the_animal/
{ "a_id": [ "cd6h6ud" ], "score": [ 5 ], "text": [ "A mol represents 6.022 x 10^23 individual atoms or molecules. Each element of the periodic table has a weight in grams next to it. That is the atomic mass unit (amu) and shows how many grams 1 mol of the element will weigh. For example, oxygen...
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2wkygm
why does moss only grow facing north
I have heard this all my life and it has always baffled me. Is this true or just a myth?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2wkygm/eli5_why_does_moss_only_grow_facing_north/
{ "a_id": [ "corsltj", "corsnaz" ], "score": [ 5, 2 ], "text": [ "It doesn't. \n\nIt just doesn't grow well in direct sunlight. So in the northern hemisphere it generally only grows on the North side of things. It will grow on the south side of something as long as it doesn't get too direc...
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[ [], [] ]
t14bx
How does the modern Big Bang theory incorporate the Law of Conservation of matter?
I have done a little more research and have learned that it is believed that there was nothing, no space, time, etc. before the big bang. Isn't the law that something can't be created from nothing?
askscience
http://www.reddit.com/r/askscience/comments/t14bx/how_does_the_modern_big_bang_theory_incorporate/
{ "a_id": [ "c4in3m6" ], "score": [ 6 ], "text": [ "First, there is no such thing as a \"law of conservation of matter\".\n\nSecond, you are misinterpreting what the Big Bang *is*. It was not a magical explosion where something was created from nothing. It was an epoch in the early universe where ...
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2d4smy
When we see something positive, why do we clap?
askscience
http://www.reddit.com/r/askscience/comments/2d4smy/when_we_see_something_positive_why_do_we_clap/
{ "a_id": [ "cjm4q7q", "cjm6sa9" ], "score": [ 5, 3 ], "text": [ "The glib answer is that it is just an arbitrary signal, based on social norms.\n\nHowever, one might speculate that clapping has some attractive qualities. It's a cheap way of generating an impulse response, which contains a...
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[ [], [] ]
d5nsz6
Psychologically, what is this called?
What is called when someone Keeps following a choice even if it doesn't work? Here's a short story: A worker had the job to dig a hole with a bulldozer but it broke down. So, he decided to fix it and spent the whole shift doing so. Although there are 3 other working bulldozers he can use, he kept following his first c...
askscience
https://www.reddit.com/r/askscience/comments/d5nsz6/psychologically_what_is_this_called/
{ "a_id": [ "f0pd3da" ], "score": [ 3 ], "text": [ "This could be the result of several different cognitive processes. It depends on his reason for choosing to do that. This could be polarized or \"black or white\" thinking. That is, the person is inflexible in their view of how the task is comple...
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[ [] ]
36ek4r
does my iphone soak up data while apps are open but not in use?
As in...my phone is not in use, the apps haven't been "closed" but are available when I open the phone and double click the home button. If the screen is dark, not in use, that means my apps aren't using any data when I'm away from WiFi? Or not so much?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/36ek4r/eli5_does_my_iphone_soak_up_data_while_apps_are/
{ "a_id": [ "crd9koz" ], "score": [ 2 ], "text": [ "Yes they will use some, for updating info, like facebook gives you notifications. The amounts will be very small and shouldn't make a difference unless you have really, REALLY shitty plan. You should be able to turn off mobile data if you want it...
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16y6bx
what is the difference between being "legally blind" and blind in the colloquial sense?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/16y6bx/eli5_what_is_the_difference_between_being_legally/
{ "a_id": [ "c80g44g", "c80g8rj" ], "score": [ 3, 2 ], "text": [ "Legally blind means that even with glasses you can't see enough to function (e.g. you can't read, navigate or drive). But you can still see some shapes, the eyes are still working. Blind blind means everything is gone. ", ...
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[ [], [] ]
2e0ifn
does "beginner's luck" have any truth to it in various games or sports?
The words "beginner's luck" gets thrown around often in board games, card games, sports and other subjects. Is there any science to it or is it just random chance?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2e0ifn/eli5_does_beginners_luck_have_any_truth_to_it_in/
{ "a_id": [ "cjuvb98", "cjuvfls", "cjuvj1t", "cjuy1cs", "cjv9wzo", "cjvgtik" ], "score": [ 14, 62, 12, 3, 6, 3 ], "text": [ "Well, beginners tend to be unskilled and inexperienced by definition, so they're usually considered the weakest link. This can cause ...
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[ [], [], [], [], [], [] ]
32pdil
why doesn't greece just refuse to pay it's debt?
Yes yes I know that they would possibly be kicked out of the Euro and there would be other consequences, but seriously - is being in the Euro really that great with that price tag? Clearly Greece shouldn't be in the Euro because they are unable to fiscally control their economy by devaluing the money supply, which is o...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/32pdil/eli5_why_doesnt_greece_just_refuse_to_pay_its_debt/
{ "a_id": [ "cqdbnd6", "cqdbqna", "cqdbr51", "cqdjuwo" ], "score": [ 12, 3, 16, 2 ], "text": [ "If you lent money to your friend and one day he just said \"I'm not gonna pay you back\". How would you like that? Would you ever lend him money again? Would you even be friends ...
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[ [], [], [], [] ]
5fm6t6
Since the Sun is also spherical like the planets that orbit it, and if Earth has polar orbiting objects, why are none of our solar system planets "polar" orbiting the sun? Are there any?
All 8/9 planets of our solar system (I've forgotten the current verdict on Pluto), according to most research we do, are basically within the same plane as the Earth is to the sun... kind of our equatorial plane, if you will (I realize the earth is tilted on an axis within that plane). We have polar-orbiting satellite...
askscience
https://www.reddit.com/r/askscience/comments/5fm6t6/since_the_sun_is_also_spherical_like_the_planets/
{ "a_id": [ "dam8knh" ], "score": [ 6 ], "text": [ "They're in that plane because it's the same as the plane of the disc of gas and dust which coalesced to form the Sun and planets in the first place, and nothing has perturbed them very much since.\n\nIt's entirely possible that a body could orbit...
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v8u9r
why do some dishes heat up quicker than the actual food contents?
Tasted the food in a dish after a minute or so, it was tepid. Then got scalded trying to pick up the dish, as that had reached a ridiculously hot temperature. Not the first time... I don't learn, eh? What is it in some dishes that causes them to heat up so much more that the food they contain? EDIT: typo, thank you T...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/v8u9r/eli5_why_do_some_dishes_heat_up_quicker_than_the/
{ "a_id": [ "c52bscf", "c52buyu", "c52e75l", "c52lxci" ], "score": [ 2, 3, 2, 2 ], "text": [ "Well dishes are made of ceramic, which is made of dirt. Some types of dirt have little bits of metal in them. When you put these dishes in the microwave, the metal \"short-circuits...
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[ [], [], [], [] ]
1agdcx
how is reddit free? i can't wrap my head around the business model.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1agdcx/eli5_how_is_reddit_free_i_cant_wrap_my_head/
{ "a_id": [ "c8x5lzd" ], "score": [ 5 ], "text": [ "The vast majority of the work is done by volunteers. So they have very few expenses.\n\nThe expenses that they do have are covered by ads, reddit gold donations, etc." ] }
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hmt81
Can someone explain the evolutionary benefits to having a foreskin?
I have read circumcision can lower the chances of contracting STDs. Uncircumcised men have to clean under the foreskin to prevent infection, and may develop problems later in adulthood that requires them to become circumcised. I have not been able to find much information on the benefits of a foreskin. Why would evolut...
askscience
http://www.reddit.com/r/askscience/comments/hmt81/can_someone_explain_the_evolutionary_benefits_to/
{ "a_id": [ "c1wn3rx", "c1wn4md", "c1wn4os", "c1wn5bh", "c1wnhau" ], "score": [ 7, 6, 9, 38, 6 ], "text": [ "While I am no geneticist or evolutionary biologist, I have read /r/askscience enough to know the gist of the answer you'll probably get from them.\n\nJust be...
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[ [ "http://www.reddit.com/r/askscience/comments/hljcy/would_it_be_appropriate_to_say_the_goal_of/c1wc00p" ], [], [ "http://en.wikipedia.org/wiki/Foreskin" ], [], [] ]
6b0va4
How do you clean up a natural body of water?
This is something that's always perplexed me. Once you stop the dumping, what comes next? Does the surrounding land cleanse the water? Are there chemicals and filtration processes that clean the water? How do you clean the water without destroying the ecosystems within?
askscience
https://www.reddit.com/r/askscience/comments/6b0va4/how_do_you_clean_up_a_natural_body_of_water/
{ "a_id": [ "dhj5sfr", "dhjtmuu" ], "score": [ 8, 15 ], "text": [ "The [East Kolkata Wetlands](_URL_1_) represent probably the largest example of a wetlands ecosystem for processing raw sewage (more than 70 million liters per day). \n\nDr. Dhrubajyoti Ghosh - an engineer and ecologist base...
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[ [ "http://dhrubajyoti.net/Final%20Ecosystem%20Book.pdf", "https://en.wikipedia.org/wiki/East_Kolkata_Wetlands", "https://en.wikipedia.org/wiki/Actinobacteria", "http://dhrubajyoti.net/" ], [] ]
1lqxj2
why the new trend to shave pubic hair?
I was reading a magazine article the other day (science illustrated) that said that pubic lice is all but extinct in the west because of the recent(ish) prevalent trend for women to shave their pubic hair, hence the lice cannot spread. It got me wondering - this has never been a "thing" in the past (in fact, in the 70...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1lqxj2/eli5_why_the_new_trend_to_shave_pubic_hair/
{ "a_id": [ "cc1vfav", "cc1vg5q", "cc2csqn" ], "score": [ 9, 7, 2 ], "text": [ "The ubiquity of pornography with the rise of the Internet and the desire to mimic the \"actors\".", "According to my girlfriend, because her vagina leaks over it, which is disgusting, and because it...
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[]
[ [], [], [ "http://www.mamamia.com.au/news/are-bottoms-the-new-mouths/", "http://www.details.com/sex-relationships/sex-and-other-releases/200707/anal-sex-new-deal-breaker", "http://en.wikipedia.org/wiki/Social_impact_of_thong_underwear", "http://www.marieclaire.com/sex-love/relationship-issues/an...
1mag2o
What was life like for an allied conscientious objector during WWII?
I heard that Beyard Rustin spent a few years in prison for it. Was this normal? Was the crime treason, or something else? Are there books written about objectors during WWII?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1mag2o/what_was_life_like_for_an_allied_conscientious/
{ "a_id": [ "cc7cer4", "cc7ednz", "cc7edx6" ], "score": [ 5, 2, 3 ], "text": [ "In the US a conscientious objector could become a medic. One such objector, Desmond Doss, was awarded the Medal of Honor for bravery in saving the lives of quite a number of men over a number of days a...
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[ [ "http://www.washingtonpost.com/wp-dyn/content/article/2006/03/25/AR2006032501181.html", "http://www.history.army.mil/html/moh/wwII-a-f.html#DOSS", "http://en.wikipedia.org/wiki/Desmond_Doss" ], [], [ "https://fs.usda.gov/wps/portal/fsinternet/!ut/p/c5/04_SB8K8xLLM9MSSzPy8xBz9CP0os3gjAwhwtDDw...
46i6my
why the more dangerous vehicles (scooters, small cars) are available to teenagers, while the safer ones are not?
This question won't count for the US, but I know in many EU countries scooters and small cars are available to teenagers while safer cars are only available from 18+
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/46i6my/eli5_why_the_more_dangerous_vehicles_scooters/
{ "a_id": [ "d05b92d" ], "score": [ 6 ], "text": [ "Scooters and small cars may be more dangerous to their driver, but they are less dangerous to everyone else. If you hit something with a scooter you might kill yourself, if you hit something with a large sedan you stand a much higher chance of da...
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pbmtl
Are Aerodynamics and Gravity theories or laws?
I always hear atheists defending the theory of evolution by saying "gravity is a theory etc," but I thought that aerodynamics and gravity were laws. Could somebody please explain?
askscience
http://www.reddit.com/r/askscience/comments/pbmtl/are_aerodynamics_and_gravity_theories_or_laws/
{ "a_id": [ "c3o2bl4", "c3o2bxu", "c3o2lc9" ], "score": [ 9, 3, 10 ], "text": [ "You can think of a theory as the explanation of a phenomena and a law as the formula that engineers use to represent/predict the phenomena.\n\nThe theory of gravitation involves relativity, bosons, etc...
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[ [], [], [] ]
4a6csl
what is the deal with the unholy trinity of kroger, cvs pharmacy and walgreen's?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/4a6csl/eli5_what_is_the_deal_with_the_unholy_trinity_of/
{ "a_id": [ "d0xqaa6", "d0xr7yb", "d0xwlg0", "d0xwt2r", "d0xyuz0" ], "score": [ 8, 49, 2, 6, 2 ], "text": [ "You should probably search the sub for why businesses tend to open by similar businesses. I've also seen a pretty good video on YouTube about the concept, b...
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[ [], [], [], [], [] ]
a67plc
what is ideal mechanical advantage and how can i calculate it?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/a67plc/eli5_what_is_ideal_mechanical_advantage_and_how/
{ "a_id": [ "ebsmo7n" ], "score": [ 5 ], "text": [ "Ideal mechanical advantage is the number that your force is multiplied by in the absolute best case scenario when using a simachine (no friction or other ways to lose force applied.) How it's calculated varies depending on the machine you're usi...
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293hee
can someone please explain for me the nba salary cap and luxury-tax threshold?
Just reading up on LBJ opting out of his final 2 years of his contract with Heat and how it can enable the Heat to restructure their roster (possibly making room within the salary cap for Carmello)
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/293hee/eli5_can_someone_please_explain_for_me_the_nba/
{ "a_id": [ "cih2uwd" ], "score": [ 2 ], "text": [ "The NBA has what is called a soft-cap. This means that there are certain rules that allow a team to go over the salary cap. Contrast this with the NFL, which has a hard-cap: a team cannot, under any circumstances, go over the NFL's cap.\n\nThe lu...
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[ [] ]
8tj08r
Why was the Holocaust in Lithuania so complete and utter? What is the reason for the staggering scale of collaboration by Lithuanians?
The Holocaust in Lithuania is the most extensive in all affected countries, reducing pre-War Jewish population from 210,000 to only 15,000. The figure likely a bit higher as the Soviet Union has deported 7,000 Jews after the occupation of Lithuania and Chiune Sugihara - God bless his soul - helped 6,000 to leave the co...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/8tj08r/why_was_the_holocaust_in_lithuania_so_complete/
{ "a_id": [ "e191n80", "e196jvm" ], "score": [ 10, 81 ], "text": [ "Just for clarification, what were the numbers like for other countries? My understanding was that Jewish populations in Poland, Hungary, and the Ukraine were pretty thoroughly wiped out, too, in no small part due to collab...
[]
[ "http://www.annefrankguide.net/en-US/bronnenbank.asp?oid=20747", "https://en.wikipedia.org/wiki/The_Holocaust_in_Belarus#/media/File:Map_Stahlecker%27s_Report_1941-1943.jpg" ]
[ [], [ "https://www.reddit.com/r/AskHistorians/comments/5zetxi/how_did_holocaust_survivors_survive/" ] ]
ajpsso
in difderent languages, what influences the way every number is called or pronounced as ?
Why do some languages, Like Hindi, Bengali, Gujarati assossiate a separate word for every number ? While some languages, Like English, German stick to a pattern where a larger number is spoken by addressing the tens, units place as a combination ? Eg: 21 is twenty one, 22 is twenty two. I had this observation toda...
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/ajpsso/eli5_in_difderent_languages_what_influences_the/
{ "a_id": [ "eexm77l", "eexoo1w", "eexsood" ], "score": [ 9, 2, 2 ], "text": [ "French is the absolute WORST about this. They don't have a word for a lot of numbers. Example: 80 is said as two forties. 70 is seven tens. 90 is the worst, it's four twenty ten. It got so confusing tha...
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2ozos8
why do i tense my body and brace myself when i know a loud noise is imminent? does it help at all?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2ozos8/eli5_why_do_i_tense_my_body_and_brace_myself_when/
{ "a_id": [ "cmrzd5q", "cmrzf6s", "cms3htp", "cms86av", "cms91ce", "cmsn9iz", "cmsrk9g", "cmsrvft" ], "score": [ 2, 302, 11, 4, 5, 2, 2, 2 ], "text": [ "my guess would be it has to do with your fight or flight response, and more importantly y...
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[ [], [], [], [], [], [], [], [] ]
1aoot3
Does the body really treat cooked food as a toxin?
A friend of mine recently claimed that he watched a "peer reviewed" documentary called "Food Matters". In this documentary, they discussed how - in his words - that "cooked food is treated like a toxin by the body, which is why raw food is better". Is there any truth to this statement? I would simply like to know.
askscience
http://www.reddit.com/r/askscience/comments/1aoot3/does_the_body_really_treat_cooked_food_as_a_toxin/
{ "a_id": [ "c8zdf35", "c8zelb5", "c8zhy29" ], "score": [ 3, 2, 4 ], "text": [ "No. Your body will try to digest everything you put into it, from carrots to steak to a rock. Cooking food may denature some proteins and vitamins, as well as killing tons of harmful bacteria (especiall...
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[]
[ [], [ "http://en.wikipedia.org/wiki/Food_Matters", "http://naturemoms.com/blog/2009/01/05/does-food-really-matter/" ], [ "http://news.nationalgeographic.com/news/2012/10/121026-human-cooking-evolution-raw-food-health-science/", "http://en.wikipedia.org/wiki/Foodborne_illness", "http://en.w...
850c9b
What was the cause of Æthelwold's Revolt?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/850c9b/what_was_the_cause_of_æthelwolds_revolt/
{ "a_id": [ "dvui6m4" ], "score": [ 3 ], "text": [ "Æthelwold was the son of Æthelred I, the older brother of Ælfred, better known as Alfred the Great. *Cerdicing* succession rules were somewhat pragmatic, and allowed for succession to pass to brothers in the event that passing the crown to a son ...
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[ [] ]
4yvao7
Were any Jewish athletes who participated in the 1936 Berlin Olympics killed during the Holocaust?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/4yvao7/were_any_jewish_athletes_who_participated_in_the/
{ "a_id": [ "d6quhot", "d6rlep4", "d6s2zjy", "d7dbr1n" ], "score": [ 203, 28, 2, 2 ], "text": [ "Yes, there were many Jewish athletes from countries in Europe, America, and North Africa who competed. For example, Bronislaw Czech, from Poland, was a downhill skier who compet...
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[ [], [], [], [ "http://www.timesofisrael.com/the-jewish-olympians-among-hitlers-victims/", "https://www.reddit.com/r/Jewish/comments/51n0yz/the_jewish_olympians_among_hitlers_victims/?ref=share&ref_source=link" ] ]
47o4iw
how is the correction for astigmatism different to the correction of nearsightedness?
Apparently I have astigmatism as well as myopia and I am wondering how these two eye conditions are different.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/47o4iw/eli5_how_is_the_correction_for_astigmatism/
{ "a_id": [ "d0edxze", "d0f4rja" ], "score": [ 5, 2 ], "text": [ "So nearsightedness is when there's an aberration in the lens (technically in the length of the eye itself), that prevents the incoming light from focusing to a point on the retina. The light still *would* focus onto a single...
[]
[]
[ [ "http://www.allaboutvision.com/conditions/astigmatism.htm" ], [ "https://upload.wikimedia.org/wikipedia/commons/4/42/Astigmatism_text_blur.png" ] ]
5h4zvc
the final fantasy universe. are each series separate stories or part of a bigger storyline?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5h4zvc/eli5_the_final_fantasy_universe_are_each_series/
{ "a_id": [ "daxgz6h", "daxgz99" ], "score": [ 3, 2 ], "text": [ "They're separate stories and in many cases, they take place in completely different fictional worlds. Some are very loosely linked, but all of them are self-contained stories. If you were to play Final Fantasy VII, then Fi...
[]
[]
[ [], [] ]
2f2nbl
What was the process of Taiwan's removal from the UN's permanent Security Council like?
How did they go from being a permanent member in the Security Council to not being a member?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2f2nbl/what_was_the_process_of_taiwans_removal_from_the/
{ "a_id": [ "ck606rj", "ck5c1i6" ], "score": [ 2, 3 ], "text": [ "One key factor would be its oppression towards the PRC. Because ROC claimed the whole of China, it could not allow PRC to join the UN as a separate nation, nor could it recognize the PRC's sovereignty.\n\nSince admission was...
[]
[]
[ [], [ "http://learning.blogs.nytimes.com/2011/10/25/oct-25-1971-peoples-republic-of-china-in-taiwan-out-at-un/" ] ]
5mx8ot
What were the reasons for the resurgent of extreme Islam in the Muslim world?
I read that Muslim populations throughout the middle east in the beginning of the 20th century weren't as religious and extreme as they are today or even 20 years ago. What changes are largely responsible for the radicalization of the Muslim population in the ME in the 20th century?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/5mx8ot/what_were_the_reasons_for_the_resurgent_of/
{ "a_id": [ "dc77urf", "dc7kx01" ], "score": [ 28, 48 ], "text": [ "As a related question, what led to the decline of Pan-Arab nationalism? Was it primarily the result of the Camp David Accords and the end of the Cold War, or was it more nuanced than that?", "What is extremism? Is vio...
[]
[]
[ [], [ "https://www.reddit.com/r/AskHistorians/comments/3srzws/at_what_point_in_history_did_radical_islam_become/", "https://www.reddit.com/r/explainlikeimfive/comments/4co5py/eli5_how_are_the_countries_involved_in_the_arab/d1k4hmg/", "https://www.reddit.com/r/AskHistorians/comments/2ryeph/what_is_the_...
9epc6z
how are people with insomnia able to be simultaneously exhausted and yet unable to sleep?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9epc6z/eli5_how_are_people_with_insomnia_able_to_be/
{ "a_id": [ "e5qh9zg" ], "score": [ 2 ], "text": [ "Being exhausted and being able to sleep are two separate states. For most people being exhausted makes it easy to sleep, but for someone with insomnia those mechanisms are disrupted in some manner and they cannot sleep. This means they cannot res...
[]
[]
[ [] ]
ffcgrk
alcohol percentage?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/ffcgrk/eli5_alcohol_percentage/
{ "a_id": [ "fjxi2cr", "fjxi3da", "fjxi75d", "fjxo89z" ], "score": [ 16, 2, 3, 3 ], "text": [ "If the amount in both glasses were the same, then the amount of alcohol in both would also be the same. It is a percentage, so the small bottle would have less total alcohol then ...
[]
[]
[ [], [], [], [] ]
7gz7ee
how and why do our brains make up the color magenta?
Magenta isn't on the visible spectrum, which means it doesn't have a wavelength, which means it doesn't exist as a color of light. So...like it says on the tin.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7gz7ee/eli5_how_and_why_do_our_brains_make_up_the_color/
{ "a_id": [ "dqmvq42", "dqmwye9" ], "score": [ 7, 3 ], "text": [ "It's a mixture of colors and can't be defined by one wavelength. So is any kind of brown. No big deal. ", "Because 'colour' doesn't exist in the real world. In the real world it's just photons of a certain wavelength r...
[]
[]
[ [], [ "http://brainden.com/images/rotating-dots.gif", "https://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Optical_grey_squares_orange_brown.svg/1280px-Optical_grey_squares_orange_brown.svg.png" ] ]
1ma9lb
who exactly are the syrian rebels?
And who is the Muslim Brotherhood? Are they against the government? They seem to be terrorizing the citizens too.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1ma9lb/eli5_who_exactly_are_the_syrian_rebels/
{ "a_id": [ "cc79shn", "cc7c9vd" ], "score": [ 39, 48 ], "text": [ "60,000 - Free Syrian Army (non-Sectarian defectors)\n\n37,000 - Syrian Liberation Front (Islamists)\n\n13,000 - Syrian Islamic Front (More Islamists)\n\n5,000+ - (growing) Jabhat al-Nusra (Al-Qaeda allies)\n\n1,200 - Saudi...
[]
[]
[ [], [ "http://www.independent.co.uk/news/world/middle-east/freedom-fighters-cannibals-the-truth-about-syrias-rebels-8662618.html" ] ]
7z7nn7
why did adultery become decriminalised in many western countries?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7z7nn7/eli5_why_did_adultery_become_decriminalised_in/
{ "a_id": [ "dulwle4", "dulwve2", "dum5oat", "dum6wjr" ], "score": [ 29, 3, 4, 3 ], "text": [ "In a secular society, a marriage is just a contract. There are no criminal penalties for violating other types of contracts (aside from things like fraud,) and no harm to society ...
[]
[]
[ [], [], [], [ "https://www.military.com/join-armed-forces/the-uniform-code-of-military-justice-ucmj.html" ] ]
7s9hes
What was the impact of the Holocaust, if any, on Rabbinical Judaism?
I'm aware there are different opinions within Rabbinism regarding halakha etc., If that is not relevant it can be disregarded for this discussion. I would like to hear about any effects on strand of Rabbinical Judaism that modern historians trace directly to the persecution of the Holocaust. Thanks!
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/7s9hes/what_was_the_impact_of_the_holocaust_if_any_on/
{ "a_id": [ "dt3jo1s" ], "score": [ 7 ], "text": [ "First of all, a bit of terminology. \"Rabbinism\" isn't really a thing. \"Rabbinic Judaism\" is, but from roughly 1000 years ago until present the overwhelming majority of Judaism has been Rabbinic (Karaites have existed and still do, but after...
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[]
[ [] ]
c7yrl6
What was the British response to the sinking of the HMS Hood?
I understand that the pride of the British navy was sunk during the Battle of the Denmark Strait when she engaged the Bismarck and Prinz Eugen. What I would like to know is how the British people reacted to the loss of one of their most powerful warships. Were they sad, vengeful, disheartened or something of a mix?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/c7yrl6/what_was_the_british_response_to_the_sinking_of/
{ "a_id": [ "esihuqs" ], "score": [ 8 ], "text": [ "The response to the loss of the *Hood* was generally, and initially, one of shock, tinged with sadness. The *Hood* had been thought of as a 'mighty' ship, the pride of the fleet, and capable of beating any ship afloat. To lose her in such an imme...
[]
[]
[ [] ]
7xah8i
Just watched Dunkirk and was wondering ...
why didn't the Germans ever attack the mole at beach other than with a few planes one or two timea? Apparently there were 300,000+ soldiers there for over a week. Seems like that would give Germany plenty of time to come up with some sort of assault, especially when they see 100's of boats headed that way to evacuate p...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/7xah8i/just_watched_dunkirk_and_was_wondering/
{ "a_id": [ "du6pbmp", "du7479q" ], "score": [ 5, 3 ], "text": [ "Hi there -- when the movie came out we had quite a few questions about it, so we collected them into a big [Dunkirk Megathread](_URL_0_) that may be of some interest to you. Feel free to post follow-up questions here, though...
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[]
[ [ "https://www.reddit.com/r/AskHistorians/comments/6pg8vd/dunkirk_megathread_the_battle_of_dunkirk_and_the/" ], [] ]
3cbmk0
why do forearms and calves stay relatively skinny on fat obese people?
Emphasis on 'relatively'
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/3cbmk0/eli5_why_do_forearms_and_calves_stay_relatively/
{ "a_id": [ "csu1t7r", "csu33iu", "csu3er9", "csu7wwb", "csujaid" ], "score": [ 28, 10, 5, 2, 2 ], "text": [ "Because there is limited value in moving fat to the extremities. All of the organs that need protection and warmth are in the chest & abdominal cavities."...
[]
[]
[ [], [], [], [], [] ]
n5inf
what happens to your stuff when you die if you don't have a will?
To cover all the bases: 1. If you have a spouse? If you have no spouse? (What is the order? If your parents are alive, do they trump your siblings? What if you only have one distant cousin, etc. is an effort made to find them? By whom?) 2. If you have a mortgage? If you have other debts? 3. If you have wholly-owned ...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/n5inf/eli5_what_happens_to_your_stuff_when_you_die_if/
{ "a_id": [ "c36flgp", "c36flgp" ], "score": [ 39, 39 ], "text": [ " > If you have a spouse? If you have no spouse? (What is the order? If your parents are alive, do they trump your siblings? What if you only have one distant cousin, etc. is an effort made to find them? By whom?)\n\nIt dep...
[]
[]
[ [], [] ]
54c660
what is so special about baking soda? why does it have such amazing properties for everything?
I know baking soda has ubiquitous applications in cooking, cleaning, deodorizing, and many others I don't even know about. What is is about it that makes it great, and how has something so awesome stayed so cheap also.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/54c660/eli5_what_is_so_special_about_baking_soda_why/
{ "a_id": [ "d80qomz", "d80recx", "d80rj03", "d80rlu0", "d80rww3", "d80squm", "d80u5ou", "d80y81l", "d80z9no", "d81075y", "d810az5" ], "score": [ 103, 30, 278, 60, 7, 2, 5385, 102, 68, 3, 3 ], "text": [ " > how has som...
[]
[]
[ [], [], [], [ "http://www.madehow.com/Volume-1/Baking-Soda.html" ], [ "https://en.wikipedia.org/wiki/Nahcolite", "http://www.naturalsoda.com/OurUniqueProcess.aspx" ], [], [], [], [], [], [] ]
1yhylj
why do people shit themselves after they die maybe nsfw
What causes it
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1yhylj/why_do_people_shit_themselves_after_they_die/
{ "a_id": [ "cfko7g4" ], "score": [ 3 ], "text": [ "The intestines are loaded with bacteria, which start to eat you once you're dead. They produce gaseous waste, and eventually the gas can build up enough pressure to push poo out. The anal sphincter is also no longer active, so there's nothing rea...
[]
[]
[ [ "http://www.goodreads.com/book/show/32145.Stiff" ] ]
9vmelg
In what way is spin related to the standard model?
And how come the bosons have 1 as spin number and the fermions 1/2?
askscience
https://www.reddit.com/r/askscience/comments/9vmelg/in_what_way_is_spin_related_to_the_standard_model/
{ "a_id": [ "e9doh1k" ], "score": [ 13 ], "text": [ "The Standard Model is a quantum field theory that describes a particular set of fields, and their interactions. Excitations of each of those fields can carry intrinsic angular momentum, called \"spin\". Excitations of the electron field carry sp...
[]
[]
[ [] ]
75usfs
why are overtones produced?
I understand what overtones are, but how can a single string (or whatever is making the frequency) produce the overtones. Thanks in advance.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/75usfs/eli5_why_are_overtones_produced/
{ "a_id": [ "do96thj" ], "score": [ 2 ], "text": [ "From what I understand, a plucked string will play one note (like C for example) but different parts of the string are moving differently relative to one another. The part you pluck, where you start the vibration, has a larger degree of movement ...
[]
[]
[ [] ]
6ikb5t
why do graphics cards, ram and hard drives have such different prices per gb?
Obviously it's not the same type of memory, but why does a 4GB graphics card cost ~10x as much as a 1TB HDD?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/6ikb5t/eli5_why_do_graphics_cards_ram_and_hard_drives/
{ "a_id": [ "dj6x0tq", "dj6xb8w", "dj6xthf" ], "score": [ 2, 2, 5 ], "text": [ "A graphics card and a hard drive are very different components. The main component of a graphics card is the graphics processing unit which is a processor that is dedicated to generate graphics. The 4GB...
[]
[]
[ [], [], [] ]
sgooa
America seems to be fixated on the advances of a rising China. Did the British Empire feel the same imperial angst towards the United States at the turn of the Century?
or was their angst reserved for the rise of Germany alone?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/sgooa/america_seems_to_be_fixated_on_the_advances_of_a/
{ "a_id": [ "c4dwqct", "c4dxd8p", "c4dxqk9", "c4e0930" ], "score": [ 4, 12, 9, 3 ], "text": [ "First of all: I'm not an expert for British-U.S. relations, so take this with a grain of salt.\n\nAs far as I know, Great Britain was quite pragmatic about the rise of the U.S. an...
[]
[]
[ [], [ "http://en.wikipedia.org/wiki/Second_London_Naval_Treaty", "http://en.wikipedia.org/wiki/Washington_Naval_Treaty", "http://en.wikipedia.org/wiki/HMS_Dreadnought_%281906%29", "http://en.wikipedia.org/wiki/London_Naval_Treaty" ], [], [] ]
5joub2
When did Italians start identifying as Italian instead of Latin or Roman? When did they begin to see themselves as fundamentally different from the Romans in Constantinople?
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/5joub2/when_did_italians_start_identifying_as_italian/
{ "a_id": [ "dbi2xvr", "dbi5us4", "dbieick", "dbj3obi" ], "score": [ 138, 19, 2, 5 ], "text": [ "That's a million euro question. The issue of Italian identity has been controversial and debated for a very long time. Italians themselves seem to be unsure: there are examples ...
[]
[]
[ [], [ "https://www.reddit.com/r/AskHistorians/comments/3v8irr/when_did_people_of_the_former_roman_empire_cease/" ], [], [] ]
41lhzp
How can matter remain stable when photons travel at light speed?
Why aren't the atoms torn apart? On a related note why don't photons have infinite energy that also smashes matter and/or accelerates it massively?
askscience
https://www.reddit.com/r/askscience/comments/41lhzp/how_can_matter_remain_stable_when_photons_travel/
{ "a_id": [ "cz3mxog", "cz3r7sj" ], "score": [ 10, 2 ], "text": [ "Why would atoms be torn apart? Atoms are made of protons (not photons), neutrons, and electrons, all of which travel much more slowly than the speed of light (and can be seen as being at rest).\n\nPhotons have finite energy...
[]
[]
[ [], [] ]
7cy7lj
why is the sahara a desert when other places at the same latitude are tropical rainforests?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7cy7lj/eli5_why_is_the_sahara_a_desert_when_other_places/
{ "a_id": [ "dptmz5x", "dptnt44" ], "score": [ 5, 2 ], "text": [ "Look across the United States, if you draw a band across the US centered around San Francisco, CA. Coastal community, fairly foggy and cool year round. Nothing like the climate in Salt Lake City, Denver, and so on. \n\nLatit...
[]
[]
[ [], [ "https://www.reddit.com/r/worldbuilding/comments/738oxx/heres_an_elevation_map_for_my_world_where_should/dnohret/" ] ]
3t7h7s
What do multiple antiviruses do when both are installed that is so bad?
I've heard before the analogies of it being like having multiple drivers in one car and countless other ones, but what happens that is bad? What do they do that conflicts so heavily with each other?
askscience
https://www.reddit.com/r/askscience/comments/3t7h7s/what_do_multiple_antiviruses_do_when_both_are/
{ "a_id": [ "cx3recl" ], "score": [ 15 ], "text": [ "Antiviruses hook system calls to add their verification routines. System calls addresses are stored in the system service dispatch table (SSDT).\n\nSimply put, when a program wants to open a file, it tells Windows \"Open file.txt please\", and W...
[]
[]
[ [] ]
1wyrc9
can internet porn really result in erectile dysfunction and lower libido?
Does it really physically change your brain in re-wiring its rewards system?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1wyrc9/eli5_can_internet_porn_really_result_in_erectile/
{ "a_id": [ "cf6lpj2" ], "score": [ 2 ], "text": [ "EDIT: Thanks to those who replied regarding the error in my interpretation of OP's question. I have replied to the intended question in [a different post](_URL_0_). " ] }
[]
[]
[ [ "http://www.reddit.com/r/explainlikeimfive/comments/1wyrc9/eli5_can_internet_porn_really_result_in_erectile/cf6m5w6" ] ]
11xawl
what happens if an incumbent president running for reelection loses the election to a challenger but the challenger and running mate are assassinated before being sworn in?
I'm not sure if there is an answer to this since it hasn't happened before.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/11xawl/eli5_what_happens_if_an_incumbent_president/
{ "a_id": [ "c6qcq8j" ], "score": [ 2 ], "text": [ "I think it would go to the current speaker of the house. I'm sorry, i couldn't think of a way to make it ELI5" ] }
[]
[]
[ [] ]
310fge
why do they bother to try and "hide" cell phone towers?
Most of them are really obvious. If they really wanted to hide them, they would have put more effort into it. But they look like someone gave up halfway and just say "Meh, good enough". Why even bother to hide them? We don't try to hide electric poles, phone lines, etc.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/310fge/eli5_why_do_they_bother_to_try_and_hide_cell/
{ "a_id": [ "cpxgury", "cpxh9hw", "cpxhrfv", "cpy30d6" ], "score": [ 8, 6, 3, 2 ], "text": [ "Because it simply looks more aesthetically pleasing. Cell phone towers are an eyesore ", "Same reason LA hides their oil rigs in the city, they're ugly and nobody wants to loo...
[]
[]
[ [], [], [], [] ]
19jxeh
can photons/light form stable bonds with other atoms?
this could be a totally stupid question, but I started wondering this in the shower
askscience
http://www.reddit.com/r/askscience/comments/19jxeh/can_photonslight_form_stable_bonds_with_other/
{ "a_id": [ "c8opmvt", "c8p99df" ], "score": [ 3, 2 ], "text": [ "Photons are massless, electrically neutral 'packets' of energy, so they can't form bonds. The bonds we talk about between atoms come as a result of an equilibrium of the forces of electrostatic attraction/repulsion, and the ...
[]
[]
[ [], [] ]
2vcyz6
why did it hurt so badly when the anaesthetic was injected into my iv?
I had surgery today (6 impacted teeth, 4 wisdom, 2 molars) and the anaesthetic being injected into my IV was by far the worst pain all day. It hurt so bad that I probably would have cried if there had been time, but the anaesthetist said it was normal.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2vcyz6/eli5why_did_it_hurt_so_badly_when_the_anaesthetic/
{ "a_id": [ "cogjxo4" ], "score": [ 3 ], "text": [ "I'm assuming you had propofol given to you for your anesthetic. A milky white fluid? The pain/burning is not unusual when administered in a smaller vein (relatively speaking). Different people have different sensations to it... from nothing, to s...
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[]
[ [] ]
opuhy
How can string theorists assume there are... strings?
I love physics. I watch and read what I can, with ever much more to read. But in all my pursuits about string theory I've never come across anything which explains WHY physicists can say that there are strings specifically and not something else. They always talk about how elegant the strings are and how gorgeous the t...
askscience
http://www.reddit.com/r/askscience/comments/opuhy/how_can_string_theorists_assume_there_are_strings/
{ "a_id": [ "c3j2x0n", "c3j4x4u" ], "score": [ 3, 2 ], "text": [ "no there's no evidence for them, not yet. And most of the experts in the field, so long as they're behaving properly, understand that they just have an interesting idea, not science yet. But the idea stems from an older one ...
[]
[]
[ [], [] ]
49di4g
If you had a neutron star and kept adding mass to it, would you eventually see its escape velocity exceed the speed of light?
Could you then conclude that black holes are massive neutron stars?
askscience
https://www.reddit.com/r/askscience/comments/49di4g/if_you_had_a_neutron_star_and_kept_adding_mass_to/
{ "a_id": [ "d0r02s0", "d0r47gd", "d0r9hfg" ], "score": [ 19, 9, 18 ], "text": [ "If you did this it would collapse into a black hole and then its escape velocity would be light speed. Neutron stars accreting mass is one of the ways that black holes can form.", "That's not how ...
[]
[]
[ [], [], [] ]
1f99w5
what were the manson family's motives?
I get that it was something to do with growing tensions between black people and white people, but I can't really get my head around it. And the wiki articles don't seem to provide much on motive.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1f99w5/eli5_what_were_the_manson_familys_motives/
{ "a_id": [ "ca80why", "ca83gkk" ], "score": [ 21, 8 ], "text": [ "I don't blame you for not being able to wrap your head around it. It's very confusing. \n\nBasically, Manson believed that an all out race war was coming between whites and blacks, and that the blacks would eventually win. ...
[]
[]
[ [], [] ]
9f2tm7
in light of the us open women's final, why was 'coaching' considered a violation and what constitutes a sign of coaching?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/9f2tm7/eli5_in_light_of_the_us_open_womens_final_why_was/
{ "a_id": [ "e5tf9sv" ], "score": [ 2 ], "text": [ "A tennis match is considered to be a contest between two (or four, for doubles) athletes, without any outside help. That's a little different than, say, football, soccer, or baseball, where the coach is considered an integral part of the team an...
[]
[]
[ [] ]
m52zu
Is there something tangible in the brains of serial killers and the like that separate them from people that can comfortably function within the confines of societal rules?
Obviously there are people that murder out of desperation -- I'm excluding them. What makes a mass murderer different neurologically, say, from me who cannot imagine taking another person's life because it just seems *wrong*? Doesn't the "triad of sociopathy" (bedwetting, pyromania, cruelty to animals) point to a probl...
askscience
http://www.reddit.com/r/askscience/comments/m52zu/is_there_something_tangible_in_the_brains_of/
{ "a_id": [ "c2y5tqs", "c2y5tqs" ], "score": [ 6, 6 ], "text": [ " > Doesn't the \"triad of sociopathy\" (bedwetting, pyromania, cruelty to animals) point to a problem that could maybe be recognized on a cat scan?\n\nWell, psychopathy couldn't really be seen on a CT scan as that type of ne...
[]
[]
[ [ "http://www.fil.ion.ucl.ac.uk/SocialClub/pridmore-neuroimagingpsychopathy.pdf", "http://bjp.rcpsych.org/content/182/1/5.full" ], [ "http://www.fil.ion.ucl.ac.uk/SocialClub/pridmore-neuroimagingpsychopathy.pdf", "http://bjp.rcpsych.org/content/182/1/5.full" ] ]
1bx2ry
Regarding the History Channel's Viking show: Was wife sharing as much a part of everyday Viking life as the show makes it out to be?
If you watch the show, this has been in every episode so far, was this a part of actual Viking culture?
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1bx2ry/regarding_the_history_channels_viking_show_was/
{ "a_id": [ "c9az8sm", "c9b478e" ], "score": [ 13, 7 ], "text": [ "I haven't watched the show, so could you elaborate on what you mean by 'wife sharing?' Infidelity was not generally approved of in early medieval Scandinavia, and it was in fact one of the reasons why people could file for...
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[ [], [] ]
97sudv
How ethnically diverse were Army regiments in the Soviet Union?
So I’ve been playing quite a bit of a ww2 game and it got me wondering about the ethnic diversity within Soviet armies, mainly, was there any and to what extent? From the little bit of research I did myself I only found a handful of answers and these were either contradictory or a complete guess by the poster. I supp...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/97sudv/how_ethnically_diverse_were_army_regiments_in_the/
{ "a_id": [ "e4csgto" ], "score": [ 12 ], "text": [ "Hey! I'm going to focus in on the 1930s and 40s to answer your question.\n\nThe Red Army from the Revolution until 1941 was largely a Russian, Ukrainian, and Belorussian institution. The proportion of those ethnicities - especially Russians - in...
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[ [] ]
2bdsk8
A hot day feels hotter to humans when humidity is high, as their sweat cannot evaporate as well. Are animals who do not sweat at higher risk of overheating during humid days?
askscience
http://www.reddit.com/r/askscience/comments/2bdsk8/a_hot_day_feels_hotter_to_humans_when_humidity_is/
{ "a_id": [ "cj4q1xf" ], "score": [ 11 ], "text": [ "I can think of one example in which the answer is yes. Kangaroos do not sweat (like humans do), and when temperatures are high they have to lick their forearms and dig themselves into the dirt to maintain their body temperatures. This was show...
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vdjbe
the difference between weight and resistance training.
Just curious about the difference and how each is beneficial.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/vdjbe/eli5_the_difference_between_weight_and_resistance/
{ "a_id": [ "c53j3eh" ], "score": [ 2 ], "text": [ "Weight training is a sub category of resistance training. Weight training involves the use of weights to build strength. Resistance training uses cables, machines, bodyweight, or weights to build strength." ] }
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[ [] ]
ygez2
recorded sound quality
So I just bought a CD and figured I should import it to iTunes. At the bottom, there was a settings option. It allows me to choose what quality I want to import the CD. I know that 320kps is the highest quality, but the standard iTunes import quality is around 180~ ish. I like the best quality for my music, but importi...
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/ygez2/eli5_recorded_sound_quality/
{ "a_id": [ "c5vcdks" ], "score": [ 7 ], "text": [ "So your three questions are:\n1. What the values mean?\n2. how significant is the difference in quality?\n3. can you hear the difference?\n\n1. The values are whats know as bit rate. The easiest way to describe them is ; audio is a [sine wave](_U...
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[ "http://www.turtlebeach.com/products/xbox-gaming-headsets/ear-force-x12.aspx", "http://www.bose.com/controller?url=/shop_online/headphones/audio_headphones/in_ear_headphones/index.jsp" ]
[ [ "http://www.knowzy.com/Computers/Audio/Digital_Audio_Files/audio_files/Israel_Kamakawiwo%27ole-2001-Alone_In_IZ_World-10-Over_the_Rainbow-Short-32Kbps.mp3", "http://www.knowzy.com/Computers/Audio/Digital_Audio_Files/audio_files/Israel_Kamakawiwo%27ole-2001-Alone_In_IZ_World-10-Over_the_Rainbow-Short-256Kb...
1jzmu6
how does the british parliament function, and how is it different from the us government?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1jzmu6/how_does_the_british_parliament_function_and_how/
{ "a_id": [ "cbjwt3g" ], "score": [ 3 ], "text": [ "So basic overview:\nAmerican: Three Branches; Legislative, executive, and judicial. The Legislative and head of the Executive (e.i President and Congressmen) are elected separate from one another. Legislative is bicameral, meaning two parts calle...
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[ [] ]
aqdcvg
How did the Mars Curiosity Rover take this picture of itself with no visible arm?
_URL_0_
askscience
https://www.reddit.com/r/askscience/comments/aqdcvg/how_did_the_mars_curiosity_rover_take_this/
{ "a_id": [ "egg58qk", "eggcjub" ], "score": [ 24, 3 ], "text": [ "The \"selfies\" taken by Curiosity are actually composite images stitched together from multiple shots. The photos are taken by the \"MAHLI\" camera that is attached to a flexible robotic arm. In the stitching process, the ...
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[ "http://imgur.com/afBDxYC" ]
[ [], [ "http://www.db-prods.net/marsroversimages/Curiosity/2014/Sol613_MaHLI.jpg", "https://www.jpl.nasa.gov/video/details.php?id=1171" ] ]
y3mwm
Is it true that having sex/masturbating before exercise/weight-lifting has a negative effect on performance?
My wrestling coach always used to tell us to keep it in our pants the night before a match and I always wondered if this was actually good advice. Thanks!
askscience
http://www.reddit.com/r/askscience/comments/y3mwm/is_it_true_that_having_sexmasturbating_before/
{ "a_id": [ "c5s2h2a", "c5s2urc" ], "score": [ 2, 21 ], "text": [ "The only pertinent study I've ever read on it was a small-n (under 20) study which came to the conclusion that blood levels of testosterone didn't change after masturbation. Let me see if I can dig it up again.\n\nedit: mas...
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[ [], [ "http://www.sciencedirect.com/science/article/pii/S0018506X02918155" ] ]
8h8une
do objects still emit infared radiation at absolute zero (-273°c)?
Just wondering
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/8h8une/eli5_do_objects_still_emit_infared_radiation_at/
{ "a_id": [ "dyhxee9", "dyi5k35" ], "score": [ 10, 3 ], "text": [ "We don't know, such a temperature has never been achieved and is theoretically impossible to obtain. So there really isn't a definite answer to that question.", "The theory that exactly describes blackbody radiation is ...
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[]
[ [], [ "https://lampx.tugraz.at/~hadley/ss1/emfield/blackbody.php", "https://en.wikipedia.org/wiki/Planck%27s_law" ] ]
2jl3w2
why is there such border dispute/flexibility/movement in the middle east when the rest of the world has permanent borders?
while reading this ELI5 _URL_0_ I came across comments talking about splitting parts of Iran and Iraq and Turkey to make a new country. IMHO the rest of the word has borders that have been stagnant for decades - why can't this part of the world just commit to borders? Is it just resources or something deeper?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/2jl3w2/eli5_why_is_there_such_border/
{ "a_id": [ "clcq8a2", "clcqkln" ], "score": [ 2, 6 ], "text": [ " > why can't this part of the world just commit to borders? \n\nA few reasons:\n\n* The Middle East Borders are artificial; they were made after the defeat of the Ottoman Empire in WWI. These borders did not account to demog...
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[ "http://www.reddit.com/r/explainlikeimfive/comments/2jk67g/eli5_how_is_isis_able_to_sell_oil_on_the_black/" ]
[ [], [] ]
1wk2y7
Are there examples of active participation in resisting colonial/imperial powers by their own people in pre-modern to early modern times?
To be more specific: were there cases where citizens of the colonizing/imperialist power (be they intellectuals, idealists, or whatnot) played an active part in organized resistance? Not in our day and age, but in the earlier days of the Age of Sail/Age of Exploration periods. As far as I know there were popes and gr...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1wk2y7/are_there_examples_of_active_participation_in/
{ "a_id": [ "cf30nkw" ], "score": [ 2 ], "text": [ "I'm not sure what you mean by \"direct\" effort. But if activism counts, I'm sure there will be plenty of examples. In the Indian context, [Annie Besant](_URL_0_) comes to my mind, even though I'm not certain she'd be the foremost of such activ...
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[ [ "http://en.wikipedia.org/wiki/Annie_Besant" ] ]
qkg0a
If F=MA gets to be law, what is it that keeps E=MC^2 from being a law?
askscience
http://www.reddit.com/r/askscience/comments/qkg0a/if_fma_gets_to_be_law_what_is_it_that_keeps_emc2/
{ "a_id": [ "c3yae6j" ], "score": [ 13 ], "text": [ "It's been asked many times about similar stuff if you search for it. The short answer is that the distinction you're making between \"law\" and \"theory\" doesn't really exist. Things got called \"laws\" prior to the 20th century, but it was jus...
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[ [] ]
13idjw
Why do USA state's and county's borders get "lazier" as you move to the west coast?
I'm not American, and this is something I always noticed when looking at a states or countys map of the USA. I'm not 100% sure I should ask this here, but I always figured the reason would more likely be tied to a historic or social reason. In case is not clear enough: to me, it just looks like the guy in charge of dr...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/13idjw/why_do_usa_states_and_countys_borders_get_lazier/
{ "a_id": [ "c747vyg", "c7486et", "c748pu2", "c7495zk", "c749eu6", "c74cikb", "c74dgip" ], "score": [ 61, 12, 10, 6, 2, 3, 3 ], "text": [ "1) Squares are not formless\n\n2) The original states were often formed by colonial communities from common par...
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[ [], [ "http://www.history.com/shows/how-the-states-got-their-shapes/videos#how-the-states-got-their-shapes-rebels-outlaws" ], [], [ "http://upload.wikimedia.org/wikipedia/commons/9/90/USA-2000-population-density.gif" ], [], [ "http://en.wikipedia.org/wiki/Russia#Political_divisions", "...
3jzgq6
how can bing rewards be doing any good for microsoft?
Is the amount of money they give away really worth having that many more visitors to their site? Do they get some added benefit from the program?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3jzgq6/eli5_how_can_bing_rewards_be_doing_any_good_for/
{ "a_id": [ "cutj8ls", "cutlvbg" ], "score": [ 2, 5 ], "text": [ "Yes, more visitors means more money for advertising, and depending in the tax laws in the country they are in, they may be able to write off the money for the rewards", "The points you get per search are pennies compare...
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[ [], [] ]
64i0wo
how is it people can jab themselves in the thigh without finding a vein? wouldn't there just be muscle and nothing to inject to?
Thank you.
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/64i0wo/eli5how_is_it_people_can_jab_themselves_in_the/
{ "a_id": [ "dg2b54m" ], "score": [ 3 ], "text": [ "Some medications, vaccines, etc are meant to be injected intramuscularly. Your muscles have tons of blood vessels that can get the medication into your blood stream.\n\n_URL_0_" ] }
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[ [ "https://en.wikipedia.org/wiki/Intramuscular_injection" ] ]
7zid4b
'bulking' and 'cutting'
Is it literally required to bulk in order to gain muscle?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/7zid4b/eli5_bulking_and_cutting/
{ "a_id": [ "duo8boy" ], "score": [ 2 ], "text": [ "Technically yes, in reality most people go *way* too far when they \"bulk\".\n\nWhile it is true that you do need a calorie surplus to build larger muscles, the speed that you can build muscles is generally limited more by genetic factors than by...
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uwbbv
Is it possible to join two pieces of material by having an atomically smooth surface?
I remember one of my teachers in school mentioned something like this being technically possible. If we were able to create a cut two materials such that the surfaces created were completely flat (ie. all atoms in line, no microscopic ridges or roughness) would these two surfaces join on an atomic level if they were ...
askscience
http://www.reddit.com/r/askscience/comments/uwbbv/is_it_possible_to_join_two_pieces_of_material_by/
{ "a_id": [ "c4z5gol", "c4z68gs" ], "score": [ 3, 2 ], "text": [ "I know this happens with metals - _URL_0_ - essentially what's happening with cold welding is that metals have a repeating molecular structure, and in a vacuum, where there are no \"junk atoms\" to bond to the edges of the m...
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[ [ "http://en.wikipedia.org/wiki/Cold_welding" ], [ "http://en.wikipedia.org/wiki/Galling" ] ]
7x4odu
How not to get burnt out on history?
I’m not quite sure where to ask this, but I figured r/askhistorians was my best bet. I am a senior in high school, and I am planning on majoring in archaeology and classics. I am most interested in ancient Roman history, but I don’t want to get burnt out on Romans before I truly have a chance to study them formally. I ...
AskHistorians
https://www.reddit.com/r/AskHistorians/comments/7x4odu/how_not_to_get_burnt_out_on_history/
{ "a_id": [ "du5kp7g", "du63mxy" ], "score": [ 4, 5 ], "text": [ "You'll never get burnt out if Roman history is something you truly want to study. If I had to make a suggestion, though, it would be to find some aspect of Roman history that you find *endlessly* fascinating. For instance,...
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[ [], [] ]
lmxdl
Is there a significant difference between smoking one time a day and five times every fifth day?
The title pretty much says it all, but my question is not exclusive for smoking, might as well be caffeine, alcohol or any other drug. I can't find any studies that compare the frequency of smoking. Is there a significant difference between drinking/smoking 1 time a day and let's say 5 times every 5th day?
askscience
http://www.reddit.com/r/askscience/comments/lmxdl/is_there_a_significant_difference_between_smoking/
{ "a_id": [ "c2tzv4x", "c2u0b1u", "c2u0crr", "c2u0pcy", "c2u10ry", "c2tzv4x", "c2u0b1u", "c2u0crr", "c2u0pcy", "c2u10ry" ], "score": [ 27, 3, 8, 6, 28, 27, 3, 8, 6, 28 ], "text": [ " > The term ‘social smoker’ often refers to ...
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[]
[ [ "http://menshealth.about.com/cs/lifestyle/f/social_smoke.htm" ], [ "http://www.forcon.ca/learning/alcohol.html", "http://en.wikipedia.org/wiki/Binge_drinking" ], [ "http://en.wikipedia.org/wiki/Median_lethal_dose#Other_measures_of_toxicity", "http://en.wikipedia.org/wiki/Binge_drinking...
5gmi0e
why does stale bread get softer when you warm it up? shouldn't the heat evaporate whatever water is left and make it harder?
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/5gmi0e/eli5_why_does_stale_bread_get_softer_when_you/
{ "a_id": [ "datcyl8", "datdtsr" ], "score": [ 2, 18 ], "text": [ "_URL_0_ \n \nBy heating up the water, it causes the starch in the bread to gelatinize, making it softer again.", "Bread doesn't go stale because it dries out, it goes stale because the starches crystallize. If you wei...
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[ [ "http://cooking.stackexchange.com/questions/11606/why-does-bread-soften-after-heating-it-up" ], [] ]
dlgf5i
if our body replaces cells that are damaged/old regularly, then why do donated organs still require the use of anti-rejection medicine years after the surgery?
[deleted]
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/dlgf5i/eli5_if_our_body_replaces_cells_that_are/
{ "a_id": [ "f4puybp" ], "score": [ 2 ], "text": [ "Cells regenerate with the more of the same cells, basically. As cells replicate, the goal is to copy the previous cell as perfectly as possible. So, a successfully donated organ will always be the same organ essentially, even though it's been com...
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fg28gj
How does water purification tablets work? Also does it matter how dirty the water is or if it is sea water?
askscience
https://www.reddit.com/r/askscience/comments/fg28gj/how_does_water_purification_tablets_work_also/
{ "a_id": [ "fk6rl1z" ], "score": [ 2 ], "text": [ "There are different types, some work only to disinfect in which case the large particulate should be filtered out first. \n\nOthers with by coagulating sound dirt particles to make them heavy enough to sink, effectively separating the water from ...
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[ [ "https://youtu.be/6qZWMNW7GmE" ] ]
5tgbx6
Will a candle actually help warm up a really cold room?
askscience
https://www.reddit.com/r/askscience/comments/5tgbx6/will_a_candle_actually_help_warm_up_a_really_cold/
{ "a_id": [ "ddmn6k2" ], "score": [ 39 ], "text": [ "Yeah, a little, if you light it. According to wikipedia, a candle puts out about 80 Watts of heat energy, which is about the same as what a human puts out. An 800 W heater can heat up a small room, so you should expect that filling a small room ...
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27ozbu
why do i hate foods that i enjoyed when i was younger, and now love foods that i hated as a child?
As per title.
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/27ozbu/eli5_why_do_i_hate_foods_that_i_enjoyed_when_i/
{ "a_id": [ "ci2xnlw", "ci2xwoa" ], "score": [ 3, 4 ], "text": [ "According to a study by the university of Copenhagen which is behind a paywall so I can't access it, during puberty there is a significant change in people's taste buds that allows them to discern a larger variety of flavour...
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[ [], [ "http://chemse.oxfordjournals.org/content/early/2013/05/23/chemse.bjt022" ] ]
1zajo1
what physical (or non physical) thing determines a unit of memory?
I don't understand how memory is measured. I understand that memory is measured in bytes but how do you use bytes to [measure how much memory is in sperm.](_URL_0_) What are you actually measuring?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/1zajo1/eli5_what_physical_or_non_physical_thing/
{ "a_id": [ "cfry4g1", "cfrymdj" ], "score": [ 2, 3 ], "text": [ "A sperm's \"memory\" is not a digital memory. So expressing it in bits and bytes doesn't mean much. You can say that every base pair is a byte and try to convert the DNA information into digital information.\n\nOther than th...
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[ "http://www.reddit.com/r/funny/comments/1z9k0v/but_what_if_the_data_is_corrupted/" ]
[ [], [ "http://hgdownload.cse.ucsc.edu/goldenPath/hg19/bigZips/hg19.2bit" ] ]
1bozif
What determines the direction and strength of wind?
I live on the east coast of Australia somewhere. In summer the wind is pretty much always a north Easter, in winter it's mostly westerly/south west. I understand why this occurs. However, it could be a sunny summers day and not a breeze will be blowing from anywhere, but then compare it to the same sunny day yesterday...
askscience
http://www.reddit.com/r/askscience/comments/1bozif/what_determines_the_direction_and_strength_of_wind/
{ "a_id": [ "c98p8u5" ], "score": [ 2 ], "text": [ "Wind is caused by differences in pressure from one region to another, naturally the air tries to expand from high pressure regions to lower pressure regions. \n\nNow your situation being near to an ocean means that air currents are probably well ...
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[ [] ]
261mk3
why is congress allowed to take so many breaks, many of which last weeks at a time?
explainlikeimfive
http://www.reddit.com/r/explainlikeimfive/comments/261mk3/eli5_why_is_congress_allowed_to_take_so_many/
{ "a_id": [ "chmrm1x", "chmrwls", "chmsb0r", "chmsizx" ], "score": [ 2, 7, 2, 2 ], "text": [ "The Congress is required to meet on the first Monday of December (unless they choose another date) but other than that they have the ultimate authority to dictate their own schedul...
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[]
[ [], [], [ "http://en.wikipedia.org/wiki/5th_United_States_Congress" ], [] ]
om5nu
Can a person have diabetes if they are not overweight?
My friends and I, as young Americans, are often concerned about the risks of eating too much sugar. I know sugar feeds bacteria and lowers immune system strength. I also know a diet high in sugar can contribute to cancer. But what about diabetes? If I eat a lot of sugar, & refined sugars, every day, but stay thin, ca...
askscience
http://www.reddit.com/r/askscience/comments/om5nu/can_a_person_have_diabetes_if_they_are_not/
{ "a_id": [ "c3icqwk", "c3ididm", "c3if07w" ], "score": [ 4, 3, 2 ], "text": [ "It's definitely possible. Most people who develop [Type I diabetes](_URL_0_) are otherwise healthy. Even Type II diabetes isn't universally caused by obesity.", "Yes, you can get Type 2 diabetes reg...
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[ [ "http://en.wikipedia.org/wiki/Diabetes_mellitus_type_1" ], [], [] ]
1i8mgl
I sometimes hear that the new deal didn't really get us out of the great depression and in fact may have delayed it's end. Is there any truth to this?
It's usually from people with a political bias so i've never taken it very seriously but I've been hearing it more frequently lately. similar (though not the same) questions were asked here a while ago but I think some fresh perceptive to this more specific question would be nice
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/1i8mgl/i_sometimes_hear_that_the_new_deal_didnt_really/
{ "a_id": [ "cb258t6", "cb2a58b" ], "score": [ 43, 15 ], "text": [ "This is an excellent question that you unfortunately will probably not have properly answered in your lifetime. There are two reasons for this:\n\n1. It is still intensely relevant to our current politics. How someone i...
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[]
[ [], [] ]
3umigs
during famines, children get huge stomachs while the rest of their body is nothing but skin and bone. why is this?
[NSFW example](_URL_0_)
explainlikeimfive
https://www.reddit.com/r/explainlikeimfive/comments/3umigs/eli5_during_famines_children_get_huge_stomachs/
{ "a_id": [ "cxg0z3h" ], "score": [ 61 ], "text": [ "It's called kwashiorkor. It's caused by a deficiency in dietary protein. Basically they can no longer properly retain their fluids and it builds up in the abdomen. Normally proteins in our blood stream help to maintain the right amount of dissol...
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[ "http://4.bp.blogspot.com/-T7J4YeluMV8/T-HuhE7AaAI/AAAAAAAAAFs/ojmSgVf4ME4/s1600/Anak+Kwashiorkor.GIF" ]
[ [] ]
17wjnx
What is the heaviest metal found that functions in a living organism?
askscience
http://www.reddit.com/r/askscience/comments/17wjnx/what_is_the_heaviest_metal_found_that_functions/
{ "a_id": [ "c89h1d3" ], "score": [ 2 ], "text": [ " > ~~Iodine is an essential trace element for life, the heaviest element commonly needed by living organisms, and the second-heaviest known to be used by any form of life (only tungsten, a component of a few bacterial enzymes, has a higher atomi...
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[]
[ [ "http://en.wikipedia.org/wiki/Molybdenum#Biochemistry~~", "http://en.wikipedia.org/wiki/Dietary_mineral", "http://en.wikipedia.org/wiki/Iodine_in_biology~~", "http://en.wikipedia.org/wiki/Tungsten#Biological_role" ] ]
2e53cj
Discipline of Soldiers now and in the Medieval Age?
How would the discipline training and effectiveness of battlefield discipline differ between the medieval period and modern day soldiers? Was there any kind of 'breaking down' training done in the medieval period?(I read about Templar being forced to spit on their crosses to show them what it would be like if captured,...
AskHistorians
http://www.reddit.com/r/AskHistorians/comments/2e53cj/discipline_of_soldiers_now_and_in_the_medieval_age/
{ "a_id": [ "cjw6qm4" ], "score": [ 4 ], "text": [ "Frankly, there's no (useful) way to compare the two. Medieval armies did not have the kind of centralization and structural cohesiveness that would allow us to establish a baseline for comparison. While most combatants on the typical medieval bat...
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[ [] ]
4ycvx0
Theoretically, is it possible for an intelligent being living in the second dimension to 'discover' the third dimension?
askscience
https://www.reddit.com/r/askscience/comments/4ycvx0/theoretically_is_it_possible_for_an_intelligent/
{ "a_id": [ "d6mtvjg" ], "score": [ 26 ], "text": [ "Dimensions aren't places, even though the term is often used that way in science fiction. Rather, dimensions are properties of spaces.\n\nSpecifically, when we talk about a space having \"n dimensions\", what we mean is that it takes n numbers t...
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[]
[ [] ]