q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
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49e2r4 | why we have hdmi, vga, dvi, displayport, even if they do the same thing? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/49e2r4/eli5_why_we_have_hdmi_vga_dvi_displayport_even_if/ | {
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"text": [
"VGA is analog video. DVI is digital video which allows it transfer more data than VGA. HDMI does digital video and audio. And i was also wondering why Displa... | [] | [] | [
[],
[
"https://xkcd.com/927/"
],
[],
[
"https://www.youtube.com/watch?v=f38sotYHqtA"
],
[]
] | ||
3o9b8h | how is it that digital music is considered worse quality than the audio produced by spinning records? | Music aficionados often rave about how much better the audio is from a record player than a digital download. Aside from nostalgic value, what is the reason for this? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3o9b8h/eli5_how_is_it_that_digital_music_is_considered/ | {
"a_id": [
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"text": [
"Audio from vinyl is absolutely not better than digital. CD or 24-bit audio trashes vinyl in terms of how close they are to the master. \n \nWhen you read most articles discussi... | [] | [] | [
[],
[],
[],
[
"https://en.m.wikipedia.org/wiki/Loudness_war"
]
] | |
26hor2 | what did the boomer generation do exactly to cause millennials to resent them so much? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26hor2/eli5_what_did_the_boomer_generation_do_exactly_to/ | {
"a_id": [
"chr6dzp",
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"score": [
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"text": [
"One thing they did was set themselves up nicely for retirement to the detriment of those coming after them. This includes things like Social Security, Medicare, and pensions for government employees. They enjoy these benefit... | [] | [] | [
[],
[]
] | ||
293122 | what are the effects of pornography on my mind and personality? | I'm a male in my early 20s and have noticed that I have plenty of energy and endurance when watching porn. Time passes much faster and it is already 3am and I still don't feel like going to bed. Without it, I get tired earlier and already fall asleep by 12 or so. why does that happen and is my brain messed up chemicall... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/293122/eli5what_are_the_effects_of_pornography_on_my/ | {
"a_id": [
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"cigy1c5",
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"score": [
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"text": [
"Someone actually tried to study the effect of porn on the mind.\n\nThey went looking for adult males ages 20-35 who had never watched porn to act as a control group.\n\nThey could ... | [] | [] | [
[],
[
"http://www.huffingtonpost.com/2014/06/02/porn-less-gray-matter-brain_n_5418607.html"
],
[],
[]
] | |
52cl47 | do meteors ever hit satellites? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/52cl47/eli5_do_meteors_ever_hit_satellites/ | {
"a_id": [
"d7j6ib6"
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"score": [
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],
"text": [
"Space is big. Really big. You'd never believe how vastly, hugely, enormously big space is.\n\nMeteors and satellites, on the other hand, are pretty small. There's loads of space for them up in space, and we only have one recorded instance of a sa... | [] | [] | [
[]
] | ||
1pjhsm | Would it have been possible for the German Empire attacked France directly and not went through Belgium to kick off WW1? If so, why drag the UK into the war by going into Belgium? | After listening to Dan Carlin's new Podcast, 'Blueprints for Armageddon', this is just somthing I was curious about. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1pjhsm/would_it_have_been_possible_for_the_german_empire/ | {
"a_id": [
"cd2y0wc",
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"score": [
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],
"text": [
"The French expected the attack to fall through Luxembourg and Northern France, the southern Ardennes region. Had the Germans concentrated on the Franco-German border, as the French expected, their army would have hit the Fr... | [] | [] | [
[],
[]
] | |
5mk7fa | what does the mandelbrot set have to do with chaos theory? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5mk7fa/eli5what_does_the_mandelbrot_set_have_to_do_with/ | {
"a_id": [
"dc49yfm"
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"score": [
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"text": [
"In chaos theory, there's this concept known as bifurcation, which is when the behaviour of a system changes drastically as a parameter of the system crosses a certain threshold. The particular bifurcation that's relevant is this situation is the ... | [] | [] | [
[
"https://upload.wikimedia.org/wikipedia/commons/5/50/Logistic_Bifurcation_map_High_Resolution.png",
"https://upload.wikimedia.org/wikipedia/commons/b/b4/Verhulst-Mandelbrot-Bifurcation.jpg"
]
] | ||
3qf97q | np-hard problems | What makes a problem NP-hard and what are the steps to solving these problems.
Thanks, you guys are the best | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qf97q/eli5_nphard_problems/ | {
"a_id": [
"cweryn4"
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"score": [
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"text": [
"NP-hard problems relate to the difficulty, and how much harder they get if I increase the size of the problem.\n\n\nFor non-NP-hard problems, if I multiply the size of the problem, then I either add or multiply the difficulty. For example, if I w... | [] | [] | [
[]
] | |
7cviig | Greek and Roman statues? | A buddy of mine told me that Greco Roman statues stopped being made for thousands of years until the renaissance?
Is this true? It doesn't seem right to me. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7cviig/greek_and_roman_statues/ | {
"a_id": [
"dptzxnq"
],
"score": [
2
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"text": [
"This is (sort of) true! They stopped being made after the fall of the Roman Empire and were revived in the 15th Century during the Renaissance. This was due to some methods such as the method for creating bronze sculptures were lost. Primarily ho... | [] | [] | [
[]
] | |
2ek16a | what effect the russian sanctions have on people's day to day lives specifically in the uk and russia | I've searched, but it's not quite turned up exactly what I wanted. I know that in Russia, Western Snacks have been bidded farewell, but surely they can just buy stuff from China?
What about daily life in both the UK and Russia?
What is the **real** impact of the sanctions for everyday folk? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2ek16a/eli5_what_effect_the_russian_sanctions_have_on/ | {
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"text": [
" > I know that in Russia, Western Snacks have been bidded farewell\n\nRussia banning food imports means stuff like Norwegian fish, or Australian kangaroo meat, things they can’t p... | [] | [] | [
[],
[],
[],
[]
] | |
y7p5a | Does what we eat with change the taste of food/drink? | I suppose this is down to psychology and/or neurology, but I was curious whether or not what we use to eat from changes the taste of what we have?
I drink a fair bit of diet coke. It's kept in the fridge in the same front compartment at the same temperature (2degrees celsius) and always has been. It's always left unti... | askscience | http://www.reddit.com/r/askscience/comments/y7p5a/does_what_we_eat_with_change_the_taste_of/ | {
"a_id": [
"c5tcypr"
],
"score": [
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],
"text": [
"After reading through several journals and websites, it seems that the results vary largely. The data on beverages is primarily focused on wine and beer, and not so much pop/soda, but it seems that the overarching opinion seems to be that there i... | [] | [] | [
[
"http://tinyurl.com/9pu46s3",
"http://www-personal.umich.edu/~aradhna/touchtaste.pdf"
]
] | |
23dkmg | when can a police officer search me on the streets? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23dkmg/eli5_when_can_a_police_officer_search_me_on_the/ | {
"a_id": [
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"score": [
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"text": [
"I was walking down the street at nine the other night heading towards a party that was going on. I was carrying a zipped up backpack with alcohol and wasn't causing any disturbance when suddenly a cop pulls up and asks to se... | [] | [] | [
[],
[
"http://lawcomic.net/guide/?p=2256"
]
] | ||
6wdcfc | What would Earth's sky look like if a Black Hole was in the Solar System ? | Assuming that the black hole is small and far enough to not swallow Earth right away.
And how would Humanity react to that ? | askscience | https://www.reddit.com/r/askscience/comments/6wdcfc/what_would_earths_sky_look_like_if_a_black_hole/ | {
"a_id": [
"dm79pdh"
],
"score": [
39
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"text": [
"A black hole the mass of the sun would have the same effect on the Earth's orbit as the Sun itself. Black holes don't \"suck\" things in, they are just so dense that you can get much closer to them than ordinary objects. Most of the sky, then, w... | [] | [] | [
[]
] | |
2kf0oa | Why is Washington DC 68.3 sq mi if the Constitution (Article 1, Section 8) says it can't be larger than 10 sq mi? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2kf0oa/why_is_washington_dc_683_sq_mi_if_the/ | {
"a_id": [
"clkoai3"
],
"score": [
7
],
"text": [
"No, it says \"10 miles square\" i.e. a square whose sides cannot exceed 10 miles."
]
} | [] | [] | [
[]
] | ||
5rhjih | why does global warming cause flooding? | How do the ice caps act any differently than melting ice in a glass of water? Why would the melting cause any extra displacement of water in the oceans? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5rhjih/eli5_why_does_global_warming_cause_flooding/ | {
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4,
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"text": [
"While it is true the ice caps will act like ice in a glass of water. The problem is permafrost melting which causes huge chucks of land... | [] | [] | [
[],
[],
[],
[],
[],
[
"https://www.colourbox.com/preview/2667943-glass-with-ice-water-isotated-on-white-background.jpg",
"https://i.ytimg.com/vi/PXDUQd1l_h8/maxresdefault.jpg",
"http://assets.climatecentral.org/images/made/6_25_15_chelsey_inland_720_421_s_c1_c_c.jpg",
"https://assets.rbl.m... | |
35p42h | Fusion at the core of Earth? | If immense heat and pressure is required for fusion, can we do it a the center of the earth (if we had a way to get down there and do it)? | askscience | http://www.reddit.com/r/askscience/comments/35p42h/fusion_at_the_core_of_earth/ | {
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"score": [
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"text": [
"No.\n\nThe pressure and temperature at the core of the Sun far exceeds that of the Earth, by several orders of magnitude. The Sun's core conditions are *barely* enough for fusion to trickle along at a slow rate. Fusion is not possible in the cond... | [] | [] | [
[]
] | |
9fw49g | If I were holding a handful of DNA, what would it look like? | And how much would a handful weigh? | askscience | https://www.reddit.com/r/askscience/comments/9fw49g/if_i_were_holding_a_handful_of_dna_what_would_it/ | {
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"text": [
"[This picture](_URL_0_) is in black-and-white, but it would look like a clear, somewhat stringy goo. DNA is about 1.7 times as dense as water, or similar density to rubber, so i... | [] | [] | [
[
"https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/geology/32/3/10.1130_G19940.1/3/i0091-7613-32-3-241-f01.jpeg?Expires=2147483647&Signature=HSvq0gw~GH6Cz0RIeFVfff5Tr8mje-hKNSfjTenGyWzAA1geN8347GE3KAXVg~4uDe48ptgVWQCnEoydEWVwO8JZi2FnG9o1edmLvaPL2FO0nAfAeKa-U~P0Xi3cCU37q8Zb3NcPluCus2xjaMjoV~pNSQD9... | |
swws5 | Neil DeGrasse Tyaon wrote in one of his books that the universe was a few light-years across 1 second after the big bang. Shouldn't it have only been one light-second across? | "By now, one second of time has passed. The universe has grown to a few light-years across, about the distance from the Sun to its closest neighboring stars." *Death by Black Hole*, pg. 343, "In the Beginning".
If nothing can travel faster than light, all those particles should have only travelled one light-second, r... | askscience | http://www.reddit.com/r/askscience/comments/swws5/neil_degrasse_tyaon_wrote_in_one_of_his_books/ | {
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43,
5,
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"text": [
"Kinda simple answer: At the beginning of the universe space was expanding faster than light. There is no law that says space cannot do this, only things ca... | [] | [] | [
[],
[],
[],
[],
[]
] | |
1epnw8 | Do we know of the existence of any social group with similarities to anarchists ideas? Self-government specially, and groups of people without a government or rules. | So I am not asking if it was succesfull, but rather if it existed. I used social group because I didn't know if society was the right word. Of course two individuals living in the forest alone and with no contact would count (I believe) as a social group, **but I am curious about the "larger" example of people living w... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1epnw8/do_we_know_of_the_existence_of_any_social_group/ | {
"a_id": [
"ca2m746"
],
"score": [
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],
"text": [
"Well, I think it's first important to clarify what anarchism means. Derived from the Greek *an-* (\"without\") *archos* (\"rulers\"), it does not preclude the possibility of a society with rules. Indeed, despite the colloquial use of \"anarchy\"... | [] | [
"http://en.wikipedia.org/wiki/Stateless_society"
] | [
[
"http://en.wikipedia.org/wiki/Kibbutz"
]
] | |
2n714a | How did the English nobility react to the removal of the German Monarchy in 1918? | Was it more a French demand than English? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2n714a/how_did_the_english_nobility_react_to_the_removal/ | {
"a_id": [
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"text": [
"It wasn't a demand from the Allies that led to his abdication (though they may have wanted it). Wilhelm chose to abdicate on November 9th, before the armistice had even gone into effect. I don't know about English reaction... | [] | [] | [
[],
[]
] | |
1vtoj2 | Who were the "Blues" and the "Greens" in the Byzantine empire? | I just started reading the [John the Eunuch](_URL_0_) mystery books which are set in 6th century Constantinople, and in the background of some of the street scenes there are Blues and Greens wandering around. Wikipedia tells me they were a couple of chariot racing rivalry gangs that dabbled in theological debates and a... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1vtoj2/who_were_the_blues_and_the_greens_in_the/ | {
"a_id": [
"cevp07f",
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"score": [
7,
5,
2
],
"text": [
"Ooo, I've almost finished that series myself! Let's see if I can actually remember how these factions worked.\n\nThe Blues and the Greens (and the Reds and the Whites) were chariot racing factions at th... | [] | [
"https://www.goodreads.com/series/42680-john-the-lord-chamberlain-mystery"
] | [
[],
[],
[
"http://www.reddit.com/r/AskHistorians/comments/1c8qrk/the_blues_and_the_greens/"
]
] | |
7fjoli | how come most (or all) tv remotes are black? | I just realised I’ve probably never seen a tv remote in any colour other than black (and I sold TVs for a year). How come? Are they easier to find around the house that way? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7fjoli/eli5_how_come_most_or_all_tv_remotes_are_black/ | {
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"text": [
"They usually color match the TV’s main color, a lot of the silvery colored TVs have silver remotes. I think it is just a default color since most TVs are bla... | [] | [] | [
[],
[],
[],
[],
[]
] | |
2l5d2l | why does a slow internet connection often result in pages not loading as opposed to logically just loading slower | As the title says, often a slow internet connection results in pages not loading as opposed to just loading slower. My connection shows it's connected (like when I go over my pocket wifi limit, but still have unlimited slow internet) but pages die in the middle of loading.
What's happening? A fast connection goes f... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2l5d2l/eli5_why_does_a_slow_internet_connection_often/ | {
"a_id": [
"clrlz0f",
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"clrlzte"
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"score": [
4,
3,
3
],
"text": [
"Because of something called time out. You can think of it as a protection mechanism. It is used in many cases when programs have to wait for something outside their control. As soon as they start waitin... | [] | [] | [
[],
[],
[]
] | |
3a0o4n | what are the issues of hobbes and locke's beliefs on government | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3a0o4n/eli5_what_are_the_issues_of_hobbes_and_lockes/ | {
"a_id": [
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"text": [
"Locke's basic premise is that government, and this echoes heavily in the drafting of the U.S Constitution, should be a willing agreement between citizen and government in which the citizen gives up basic survival rights (killing for food, defense... | [] | [] | [
[]
] | ||
22zttz | Does a smartphone's gyroscope work in space? | Does it? can you flip the screen horizontal by just tilting it or doesn't this work. I hope this question is sciency enough for /r/askscience. | askscience | http://www.reddit.com/r/askscience/comments/22zttz/does_a_smartphones_gyroscope_work_in_space/ | {
"a_id": [
"cgsmuwj"
],
"score": [
2
],
"text": [
"Most phones don't use gyroscopes. They use accelerometers. It's a much different mechanism that relies heavily on the acceleration dude to gravity. Unlike a gyroscope that detects any acceleration, an accelerometer only knows which way is down (o... | [] | [] | [
[]
] | |
5ifxs1 | how and why deep web exists and why can't we access it through 'normal' browsers? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5ifxs1/eli5_how_and_why_deep_web_exists_and_why_cant_we/ | {
"a_id": [
"db7w4u6",
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"score": [
7,
22,
4
],
"text": [
"The Internet is a space of IP messages. \"Normal\" browsers use one kind of IP message to talk to web servers. A different IP message is used by mail transport agents to relay email from server to se... | [] | [] | [
[],
[],
[]
] | ||
em6yqr | what does it mean when a scientist says ‘per second per second’? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/em6yqr/eli5_what_does_it_mean_when_a_scientist_says_per/ | {
"a_id": [
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55,
2,
14,
2
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"text": [
"It means that the rate of change itself changes.\n\n\"meters per second\" is speed - the rate of change of an object's position. \"meters per second per second\" (m/s^(2)) means... | [] | [] | [
[],
[],
[],
[]
] | ||
e4jws9 | how does an octopus adapt to his environment? what are the biological processes behind that? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/e4jws9/eli5_how_does_an_octopus_adapt_to_his_environment/ | {
"a_id": [
"f9cb7ek"
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"score": [
2
],
"text": [
"Homeostasis. It is the process of maintaining the same state in various environments. The process involves many different parts of the organism working in concert to achieve this. \nIt isn't really possible to explain it as a simple concept."
... | [] | [] | [
[]
] | ||
1mzi5z | How are cells/tissues frozen without killing them? | When a living human is exposed to harsh cold they get frostbite and their tissue dies. How do scientists freeze cells (like embryos, stem cells, etc) or other living tissues without killing them? Wouldn't the liquids inside the cell membrane expand and explode the cell no matter how you froze it? | askscience | http://www.reddit.com/r/askscience/comments/1mzi5z/how_are_cellstissues_frozen_without_killing_them/ | {
"a_id": [
"cce82nw"
],
"score": [
6
],
"text": [
"When cells are frozen down, they're often frozen in specialized cell culture medium that contains dimethyl sulfoxide (DMSO). If the normal growth medium contains some sort of serum, higher-than-normal concentrations of the serum are used as well.... | [] | [] | [
[]
] | |
2ejlpo | After the EU (or its predecessors the European Coal and Steel Community and the European Economic Community) were formed, were there any other attempts to construct similar organizations in other continents and regions? | I took an international relations class and we touched upon institutional liberalism, and how IGOs were becoming increasingly more common, or attempted. Does anyone know what were some of the bigger attempts or successes? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ejlpo/after_the_eu_or_its_predecessors_the_european/ | {
"a_id": [
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"text": [
"OPEC springs to mind as a vaguely Middle-Eastern alliance but it isnt nearly as strongly tied together and there is also an African Union that consists of all the African states except Morroco, and many countries are also suspended due to various... | [] | [] | [
[]
] | |
5cwito | why are radio waves used for communication in space instead of lasers? | I understand that several demonstrations of the technology exist, but I do not understand why it is not the standard form of communication. With the upcoming maned mission to Mars, this technology seems to be the solution to the thirty-two minute communication delay.
Here's a link to the wiki page on the matter:_URL_... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5cwito/eli5_why_are_radio_waves_used_for_communication/ | {
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7,
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"text": [
"unless you have some new laser technology, refraction is still an issue with lasers. Its not terribly difficult to communicate a distance the length of the moon with lasers...but ... | [] | [
"https://en.wikipedia.org/wiki/Laser_communication_in_space"
] | [
[],
[],
[],
[]
] | |
9fhtkh | in non-mathematical terms, what are people who study octonions trying to figure out? | Many of the explanations of octonions I've read seem to be entirely theoretical. I recognize that octonions are not visible and that what they are trying to prove/figure out is largely theoretical, but what is the point of figuring them out or using them? I suppose I don't so much need a definition of them, as I'm aski... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9fhtkh/eli5_in_nonmathematical_terms_what_are_people_who/ | {
"a_id": [
"e5wr76h"
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"score": [
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"text": [
"Octonions are a mathematical construction, they are no more visible than prime numbers or square roots. Octonions are a 8-dimensional extension of quaternions, which in turn are 4-dimensional extensions of complex numbers, which are 2-dimensiona... | [] | [] | [
[]
] | |
1a4cdm | the difference between authoritarian, autocracy, monarchy, and totalitarian | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1a4cdm/eli5_the_difference_between_authoritarian/ | {
"a_id": [
"c8u0itk"
],
"score": [
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"text": [
"These are all similar, and in some cases, overlap. \n\nOnly one of your terms is really a system of government: the monarchy. This is when a king or queen rules the country, and passes the title to their children. Generally, the ministers and oth... | [] | [] | [
[]
] | ||
2dy6l4 | why can't all human behavior be explained evolutionarily? how do we choose the ones that can? | EDIT:
Examples include suicide, not wanting to have kids etc. Additionally, making certain life choices that we know are going to result in a shorter lifespan (smoking, drinking etc.) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dy6l4/eli5_why_cant_all_human_behavior_be_explained/ | {
"a_id": [
"cju8hul",
"cju8r37",
"cjuozh9"
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"score": [
2,
2,
2
],
"text": [
"Can you think of an example of human behavior that *can't* be explained evolutionarily?",
"Because evolution is hardly a complete science, meaning that every proposed aspect of it does not have soli... | [] | [] | [
[],
[],
[]
] | |
2tl3ac | Fulminated mercury explosion in Breaking Bad realistic? | The title states my question. But does fulminated mercury really create that much of an explosion to blow out windows in a room? The amount of fulminated mercury that Walter uses in the episode is a small crystal (sorry, I don't know the actual size!). This scene is in Season 1, Episode 6. | askscience | http://www.reddit.com/r/askscience/comments/2tl3ac/fulminated_mercury_explosion_in_breaking_bad/ | {
"a_id": [
"co0e8of"
],
"score": [
3
],
"text": [
"It's an interesting idea, but it's not accurate. Fulminated mercury is difficult to crystallize, so get a crystal as big as depicted is unlikely. Even given a crystal that size you will not get an explosion that big.\n\nPlus, Tuco handles the bag... | [] | [] | [
[]
] | |
bppdam | can small non repettitive electrical shocks cause damage to my body? | I work in an office building where the elevator's console is known (to me, at least) to cause an electrical shock sometimes when a button on it is pressed. It doesn't always happen but it's frequent enough that i've gotten accustomed to use stuff like my wallet to press the button for the floor I want to go to.
It's a... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bppdam/eli5_can_small_non_repettitive_electrical_shocks/ | {
"a_id": [
"enx6mrz"
],
"score": [
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"text": [
"If you get a brief zap when touching the button, it is static which is harmless. Static electricity can be made by walking to the elevator. \n\nIf you continue to feel a shock if you keep your finger on the metal, then it is AC leakage which is ... | [] | [] | [
[]
] | |
f5xswz | can anyone explain why salt accelerates corrosion | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f5xswz/eli5_can_anyone_explain_why_salt_accelerates/ | {
"a_id": [
"fi1fspq"
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"score": [
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"text": [
"As I recall, salt makes water conductive. The movement of electricity through water is part of the process of corrosion, as the reaction which forms rust is similar to the reaction in a battery. Water without salt is not very conductive, but wate... | [] | [] | [
[]
] | ||
3ypijv | why does gallbladder hurt your back? | How is it that this organ in the front of our bodies can cause pain in the back when there are several organs in between them that don't hurt at all? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ypijv/eli5_why_does_gallbladder_hurt_your_back/ | {
"a_id": [
"cyfhoqp"
],
"score": [
3
],
"text": [
"What you're talking about is called [referred pain](_URL_0_). Pain in the upper right side of the back (scapular pain) that people experience with inflammation of the gallbladder (cholecystitis) is similar to the pain some people feel in their le... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Referred_pain"
]
] | |
16oqdl | Why does sometimes our muscles twiches? Is this a nervous tics? | askscience | http://www.reddit.com/r/askscience/comments/16oqdl/why_does_sometimes_our_muscles_twiches_is_this_a/ | {
"a_id": [
"c7xz5h3"
],
"score": [
2
],
"text": [
"It is called Fasciculation and it can have arise from a variety of reasons, see:\n\n_URL_1_\n_URL_0_"
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Fasciculations",
"http://en.wikipedia.org/wiki/Benign_fasciculation_syndrome"
]
] | ||
4gxhre | Can EM field bend light? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/4gxhre/can_em_field_bend_light/ | {
"a_id": [
"d2lo9n8",
"d2lq6zp"
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"score": [
18,
5
],
"text": [
"The EM field contributes to the stress energy tensor in Einstein's field equations, so yes the field can warp spacetime and bend light. In a simple example, if you bring a bunch of electrons close together, the energy store... | [] | [] | [
[
"https://what-if.xkcd.com/140/"
],
[]
] | |
13pizr | how did flak anti-aircraft fire work? | How did Flak anti-aircraft guns work? How did discrete rounds manage to hit mortally damage targets flying at such high altitudes and velocities, not to mention with such efficiency? Did the characteristic black smoke patches in the air have to do with the mechanism of damage?
Thanks in advance. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/13pizr/eli5_how_did_flak_antiaircraft_fire_work/ | {
"a_id": [
"c75z6yi",
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"c760vyt",
"c7612wo",
"c76376s"
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"score": [
153,
17,
4,
2,
5
],
"text": [
"There are two types of anti aircraft guns. The first are pretty much big machine guns where you just fire as many rounds as you can and hope to hit somethi... | [] | [] | [
[],
[],
[],
[],
[]
] | |
d9yobx | How and when did the red cross pattée on a white field become the symbol of Knights Templar? | As the title says, is there any recorded information about the origins of the most recognizable Templar symbol? The Latin Rule dictates that brothers should wear habits "of one colour, that is white or black or brown", but doesn't mention any insignia on them. I found a pretty suspicious looking article stating that th... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/d9yobx/how_and_when_did_the_red_cross_pattée_on_a_white/ | {
"a_id": [
"f1m6wsv"
],
"score": [
6
],
"text": [
"As you note, the Rule says:\n\n > 141. The surcoats of the sergeant brothers should be completely black, with a red cross on the front and back. \n\n(Judith Mary Upton-War, *The Rule of the Templars* (Boydell, 1997), pg 53.)\n\nThe white mantle ... | [] | [] | [
[]
] | |
3r9ul2 | the basics of reddit etiquette and lingo | So being absolutely new to reddit, there is a lot of things I do not know or understand. Can someone explain Reddit etiquette and such to me so I may no longer suffer from being a pleb?
A good help would be what abbreviations are, how toxic the community generally is, what is taboo amongst reddit(as far as you know) an... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3r9ul2/eli5_the_basics_of_reddit_etiquette_and_lingo/ | {
"a_id": [
"cwm5whf",
"cwm5xej",
"cwm7oot"
],
"score": [
2,
21,
2
],
"text": [
"Don't be an ass cause you can be an ass.\n\nDon't troll and think others will find it funny.\n\nHave good grammar, something people fuck up including myself. But focus on using paragraphs and they're, ... | [] | [] | [
[],
[
"https://www.reddit.com/r/help/comments/1a0mq2/im_new_to_reddit_tell_me_the_acronyms/"
],
[]
] | |
tp5qb | what is human capital? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/tp5qb/eli5_what_is_human_capital/ | {
"a_id": [
"c4oj52r",
"c4oplil"
],
"score": [
2,
2
],
"text": [
"Your employees, the training you provide for them and they skills and education they had when you hired them",
"Human capital is the value of a person who does work. \n\nAn untrained person may be capable of performing s... | [] | [] | [
[],
[]
] | ||
2t92ce | why is primerica and other "pyramid scheme" companies viewed as being a scam | I've always heard this and even though it's probably true I'm just curious as to why. I understand it requires people below you to make money, but that's also true of sales managers. Thanks. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2t92ce/eli5_why_is_primerica_and_other_pyramid_scheme/ | {
"a_id": [
"cnww83w",
"cnwx84j",
"cnwyb87"
],
"score": [
4,
2,
2
],
"text": [
"It's not so much that it requires people below you to make money; it's that the only way to make money is to recruit a downline. You can make some money actually selling the products, but from what I ha... | [] | [] | [
[],
[],
[]
] | |
31i90g | why does fire adopt a spherical shape in space? | Like this _URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/31i90g/eli5_why_does_fire_adopt_a_spherical_shape_in/ | {
"a_id": [
"cq1t696"
],
"score": [
10
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"text": [
"A normal flame is that shape because hot air rises, stretching the flame upwards from the wick. In space everything is weightless, so there's no \"up\" and hot air doesn't rise. Hot gasses spread out equally in all directions, giving the flame a... | [] | [
"http://cdn.theatlantic.com/assets/media/video/img/upload/2013/06/flames_in_space/video-featured.jpeg"
] | [
[]
] | |
4uk3eh | how is the cost of damage determined after a natural disaster? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4uk3eh/eli5_how_is_the_cost_of_damage_determined_after_a/ | {
"a_id": [
"d5qb8ix"
],
"score": [
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],
"text": [
"The cost of a natural disaster is generally quantified by insurance claims.\n\nSo if your house burns up in a fire, and you get a $1M payout from your insurance company, that fire caused $1M in damage.\n\nFor a major disaster like an earthquake, ... | [] | [] | [
[]
] | ||
zm1da | Just bought a microscope. A couple questions... | I bought a pretty good microscope from Amazon for $195. It's the AmScope M Series Biological Microscope. It's been years since I've used one back in college and I was wondering why isn't there a light that shines from the objective housing? The light on mine only comes from beneath making it so whatever you're looking ... | askscience | http://www.reddit.com/r/askscience/comments/zm1da/just_bought_a_microscope_a_couple_questions/ | {
"a_id": [
"c65tyas"
],
"score": [
3
],
"text": [
"the oil is to put in between the highest powered objective and the slide. Make sure you don't crack your slide or scratch your objective. This would also help you to see clearly on the highest power.\nSome really simple things: your cheek cells s... | [] | [] | [
[]
] | |
6y98wn | bahá'i is one of 17 sanctified religions of the world. i've done a little bit of research but i am still very confused about what this religion is about. can someone help me? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6y98wn/eli5_bahái_is_one_of_17_sanctified_religions_of/ | {
"a_id": [
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"dmloz43",
"dmlpvhh",
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"score": [
8,
5,
3,
2,
2
],
"text": [
"I don't know if the Baha'i themselves would think of it this way, but from reading the books themselves, it looks like a syncretic movement based on Roman Cat... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
3a0q35 | how do recruitment agencies work on behalf of job seekers? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3a0q35/eli5_how_do_recruitment_agencies_work_on_behalf/ | {
"a_id": [
"cs86yzv",
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"score": [
2,
3,
2
],
"text": [
"Company A needs temporary workers for a project. But it costs time and money to interview people, find those who are suited for a project, and then have to do the process all over again next time they n... | [] | [] | [
[],
[],
[]
] | ||
564zqe | What are the environmental effect of cigarette butts? | Pretty self explanatory.
But what is the consequence of the most littered item in the world?
If there are any, is there way of cleaning these up on a large scale? | askscience | https://www.reddit.com/r/askscience/comments/564zqe/what_are_the_environmental_effect_of_cigarette/ | {
"a_id": [
"d8gefs8"
],
"score": [
31
],
"text": [
"Most butts are cellulose acetate fibre, paper or activated charcoal; the first 2 materials are technically degradable through both sedimentological/geological and biological processes, while the third is inert. After use, they also take up trace... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Kent_(cigarette)",
"http://tobaccocontrol.bmj.com/content/20/Suppl_1/i25.short",
"http://tobaccocontrol.bmj.com/content/20/Suppl_1/i17.long",
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3565511/"
]
] | |
3d6iwe | why are intel processors stuck but mobile processors (apple, samsung, qualcomm) gain plenty of performance each year? | Considering Intel has more experience and is solely dedicated to doing this why is it that every year the same processor family on get a modest 5% boost in performance why mobile are getting 50+% each year? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3d6iwe/eli5_why_are_intel_processors_stuck_but_mobile/ | {
"a_id": [
"ct28txa",
"ct2989x"
],
"score": [
7,
2
],
"text": [
"The problem is heat.\n\nIntel could theoretically make processors that had faster clock speeds but they don't have a good way to cool them. There's a relationship between the speed of a chip and the amount of heat it genera... | [] | [] | [
[],
[]
] | |
7rwhpe | why is thirst a sign of a heart attack? | One of my father’s last words was “I need water. My mouth is so dry”. He died soon after of a heart attack. This is the third time someone around me has had that symptom. They seem to be fine one minute and then like severely dehydrated the next. I still have the image of his dry pale lips...
I’ve tried looking up an e... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7rwhpe/eli5_why_is_thirst_a_sign_of_a_heart_attack/ | {
"a_id": [
"dt0gqt6"
],
"score": [
8
],
"text": [
"So I’m going to place the caveat that I’ve never seen severe thirst in any reviewed papers linked biochemically to heart attack. But, I’m willing to take a stab at a possible mechanism. \n\nSo the heart the brain the lungs the liver the arteries ... | [] | [] | [
[]
] | |
320izd | why do you taste metal in your mouth when you work out really hard and push it to the max? | I could taste the metal in my mouth and my teeth were tingling. It was unpleasant, but it went away after a while. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/320izd/eli5_why_do_you_taste_metal_in_your_mouth_when/ | {
"a_id": [
"cq6qjwg",
"cq6qm8g"
],
"score": [
2,
2
],
"text": [
"It can be due to salivary duct stones (similar to kidney stones) developing, which can cause an infection whereby physical excercise may increase saliva production tasting metallic, it could be tooth decay or you might be ta... | [] | [] | [
[],
[]
] | |
4rgtpm | what exactly is 'first past the post' voting? | (Sorry if it's the wrong flair, culture was the closest I saw on my phone.)
I've been to the Wikipedia article and maybe I missed the explanation but I don't really get it.
Also I only recently got interested in politics. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4rgtpm/eli5_what_exactly_is_first_past_the_post_voting/ | {
"a_id": [
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2,
24,
3,
2,
2,
2
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"text": [
"Everyone who can vote gets one vote, and the majority vote wins.\n\nCheck out CGP Grey's YouTube videos on voting systems using an imag... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | |
b03ar2 | how is there ice in space? what is it forming from and how is it forming? | I know there’s a lot of ice floating around in various places in space. How does ice form without water? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b03ar2/eli5_how_is_there_ice_in_space_what_is_it_forming/ | {
"a_id": [
"eibwzuj",
"eibx2dj",
"eibzcic"
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"score": [
3,
2,
3
],
"text": [
"There's definitely water in space, and nearly all of that is ice if it isn't on a nice warm planet. There are lots of other things that can also become types of ice, like carbon dioxide (dry ice), metha... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Abundance_of_the_chemical_elements"
]
] | |
l8r6s | Does anyone have an explanation for this strange phenomena I witnessed during a thunderstorm? | In 2007 I watched an amazing supercell thunderstorm approach my town. Watching the shelf cloud creep towards us was one of the scariest things I've ever witnessed... It turned everything pitch black in the middle of the day.
Under the front of the shelf cloud I saw what looked like bright green charged particles movi... | askscience | http://www.reddit.com/r/askscience/comments/l8r6s/does_anyone_have_an_explanation_for_this_strange/ | {
"a_id": [
"c2qp42y",
"c2qr1bd",
"c2qp42y",
"c2qr1bd"
],
"score": [
2,
2,
2,
2
],
"text": [
"Could be some form of ball lightning. Here is a version they created in the lab and it's green: _URL_0_",
"Someone with a green laser pointer shining it at the cloud? ",
"... | [] | [
"http://imgur.com/EUrDJ"
] | [
[
"http://www.cosmosmagazine.com/node/334"
],
[],
[
"http://www.cosmosmagazine.com/node/334"
],
[]
] | |
8442nb | Does salt used for snowstorms actually damage my asphalt driveway, and if so why? | askscience | https://www.reddit.com/r/askscience/comments/8442nb/does_salt_used_for_snowstorms_actually_damage_my/ | {
"a_id": [
"dvn27tr",
"dvnetdw"
],
"score": [
59,
64
],
"text": [
"Asphalt is more prone to expansion and contraction from summer heat and winter snow than concrete. The expansion/contraction cycles make small cracks and pits which make it more porous. Salt turns some of the ice in the wi... | [] | [] | [
[],
[]
] | ||
1z5qup | why don't plants produce heat like mammals? | How come plants in general (like trees, bushes ect.) do not produce heat like mammals do? Both cell structures are somewhat similar, but yet plants produce very little heat. Why? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1z5qup/eli5_why_dont_plants_produce_heat_like_mammals/ | {
"a_id": [
"cfqrxww"
],
"score": [
4
],
"text": [
"Heat is created in mammals to keep out bodies at a constant temperature. This is the ideal temperature for our enzymes to function and allows our bodies to be constantly in the same state of functioning. This heat also takes up a HUGE amount of e... | [] | [] | [
[]
] | |
5x8zkd | To what extent did the fall of Byzantium contribute to the rise of colonialism and long-range sea travel in Western Europe? | I am actually fascinasted with the Byzantine Empire at the moment, and while I am aware that their history is a sad one for the most part, my understanding is that their utility came from the unique positioning of Constantinople relative to the Great Silk Road. For the longest time (correct me if I'm wrong) that was t... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5x8zkd/to_what_extent_did_the_fall_of_byzantium/ | {
"a_id": [
"degdarx"
],
"score": [
10
],
"text": [
"I've written about this supposed importance of Constantinople [here](_URL_4_) \n\nBasically, **no**, the fall certainly was not the crucial factor for looking for sea routes to Asia. \nEven it being a *major* contributor is dubious and not supp... | [] | [] | [
[
"http://www.jstor.org/stable/2115514?Search=yes&resultItemClick=true&searchText=lane&searchText=spice&searchText=prices&searchUri=%2Faction%2FdoBasicSearch%3Ffc%3Doff%26hp%3D25%26wc%3Don%26amp%3D%26amp%3D%26amp%3D%26amp%3D%26amp%3D%26amp%3D%26so%3Drel%26Query%3Dlane%2Bspice%2Bprices%26acc%... | |
5b9ytn | When was the last time the Speaker of the United States House of Representatives voted? | I know it's extremely rare | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5b9ytn/when_was_the_last_time_the_speaker_of_the_united/ | {
"a_id": [
"d9n0ayr"
],
"score": [
3
],
"text": [
"The last time a Speaker voted was a lot more recently than 20 years ago. Unfortunately that means this question can not be answered without violating the rules of the sub, something I am loath to do on a political question less than 4 days before... | [] | [] | [
[]
] | |
rex7b | Way over my head. Help with understanding glycolysis for an Anatomy and Physiology exam. | Discuss the process of glycolysis; include environment, location, beginning substrate & ending product, energy used/produced, and any waste. Also work on the TCA cycle and the ETS.
Have tried researching, looking over professor's powerpoints, and reading its section in my book and still don't understand it. Can som... | askscience | http://www.reddit.com/r/askscience/comments/rex7b/way_over_my_head_help_with_understanding/ | {
"a_id": [
"c45942n"
],
"score": [
2
],
"text": [
"The C-6 glucose if broken down into a 3-C structure called pyruvate, this energy is captured by the molecules ADP to make ATP and the electron carrier NAD- is reduced to NADH. < -- basic concept.\n\nIt happens in the cytoplasm and involves 1 Gluc... | [] | [] | [
[]
] | |
20oi24 | why can't government agencies try tracking pings from cell phones on board flight 370? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20oi24/eli5_why_cant_government_agencies_try_tracking/ | {
"a_id": [
"cg590w0"
],
"score": [
4
],
"text": [
"There are no cell towers in the middle of the ocean."
]
} | [] | [] | [
[]
] | ||
1c6hfk | radio atennae. how do they work? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1c6hfk/eli5_radio_atennae_how_do_they_work/ | {
"a_id": [
"c9djbgo"
],
"score": [
3
],
"text": [
"I wondered the exact same thing. First, remember those magnets on your fridge? It's kind of cool how they can stick on to the fridge, however, they are not sticky when you touch them. Those things are called magnets because they allow us to e... | [] | [] | [
[]
] | ||
24otu6 | What are the benefits of long range high voltage and amperage electric energy transfer using direct current? | I'm puzzled by this, in high school we were basically taught that if you want to transfer electric energy long distances you have to up the voltage, and use AC current.
But now I see that a cable is being built in the Baltic sea (Sweden-Lithuania) which will use direct current (300 kV, 1250 A). It's length being 450 k... | askscience | http://www.reddit.com/r/askscience/comments/24otu6/what_are_the_benefits_of_long_range_high_voltage/ | {
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"You get a reactive power when you use AC. As you may know from high school, this can be reduced by departing the power lanes, which act as a capacitor, but when you use an underground cable/sea cable this is not possible.\n... | [] | [] | [
[
"http://en.wikipedia.org/wiki/High-voltage_direct_current#Advantages_of_HVDC_over_AC_transmission"
],
[
"http://en.wikipedia.org/wiki/Ferranti_effect"
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2t3er8 | what's the point of making (indie) movies and not making them available? | I like indie films a lot and often find myself interested in movies that exist but I'm literally incapable of watching.
I know most producers want their films distributed in theaters because that'll help them get awards and stuff and make your movie profitable; but if your movie has been made YEARS ago and you (I would... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2t3er8/eli5_whats_the_point_of_making_indie_movies_and/ | {
"a_id": [
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"score": [
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"text": [
"They're still hoping someone will buy it. Putting it on Netflix is an admission of failure. It's an embarrassment, like movies that go straight to DVD.",
"In some cases it is entirely possible that they are not allowed t... | [] | [] | [
[],
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] | |
f14wba | how does a small portion of chemicals create sudden bursts of energy, like a stick of dynamite creating lethal explosions. | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f14wba/eli5_how_does_a_small_portion_of_chemicals_create/ | {
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"text": [
"Explosives work by having a rapid reaction. Instead of undergoing a slow reaction, like wood burning and giving off heat, the reaction in an explosive happens very quickly, creating a pressure wave and heat.",
"The bond... | [] | [] | [
[],
[]
] | |
3x23wj | How come I can tell by touch when I'm touching a liquid? | Presumably there aren't special liquid sensors all over my body. Is it just my brain doing a lot of leg work? | askscience | https://www.reddit.com/r/askscience/comments/3x23wj/how_come_i_can_tell_by_touch_when_im_touching_a/ | {
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"text": [
"Liquid behave differently than solids and gases and your senses pick up those differences. Some examples of what you might be sensing:\n\n* increased heat transfer through convection\n* heat capacity of the fluid (relative t... | [] | [] | [
[],
[]
] | |
cgfg0a | How did researchers find out that we need sunlight to produce Vitamin D? | The synthesis of Vitamin D requires UV rays reaching the skin, but how did researchers discover this? | askscience | https://www.reddit.com/r/askscience/comments/cgfg0a/how_did_researchers_find_out_that_we_need/ | {
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" [_URL_0_](_URL_0_) \n\n & #x200B;\n\nExcellent article outlining the step-wise discovery. Scroll down a bit to the section about UV light. Basically, they first found the activated vitamin D product in cod liver. Then they found that irradiatin... | [] | [] | [
[
"https://academic.oup.com/jn/article/134/6/1299/4688802"
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] | |
6szc66 | How do you (historians) seperate emotion when reading about evil people in history? | I didn't know where else to ask this, but I thought you guys might have some answers.
Its weird but i get super depressed reading about people like Hitler, Mao but especially Genghis Khan. I hate him with a passion like no other. Even though I love history I can't stand to read anything about him. Its just too menta... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6szc66/how_do_you_historians_seperate_emotion_when/ | {
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"The short answer is, you don't separate out emotion, and that can and does make the study and discussion of terrible events and crimes hard to deal with. Contrary to the 'realz not feelz' attitude that seems to be awfully p... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/6qn4k3/monday_methods_we_talk_about_actual_human_beings/"
],
[]
] | |
eokhoj | why does the windshield defroster in automobiles require the air-conditioner (a/c) pump to be running? | As I understand it the car is heated via coolant used to lower the engine temperature being circulated through the heater core in a liquid to metal to air exchange. Why then do most newer vehicles require that the A/C pump be running when you are defrosting your window with heat? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eokhoj/eli5_why_does_the_windshield_defroster_in/ | {
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"fed90lh",
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"score": [
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"text": [
"To remove any humidity from the air to so that the warm air isn't making the glass steam up even worse.",
"The a/c acts like a dehumidifier in the car keeping the air dryer so... | [] | [] | [
[],
[],
[],
[]
] | |
54l2db | why do we use rockets to leave the atmosphere? why can't we use something like a plane to gradually climb out? wouldn't reentry at an angle rather than straight down be more gentle on the craft as well? | As the title suggests, strapping ourselves to a controlled explosion seems kind of stone age in the end. Is it simply not possible to gradually climb at 20-30° with something like a plane or a more aerodynamic craft? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/54l2db/eli5_why_do_we_use_rockets_to_leave_the/ | {
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"text": [
"Airplanes need air to produce lift. Where there is no air, or the air is very thin, airplanes cannot fly.",
" > Is it simply not possible to gradually climb at 20-30° with something like a plane ... | [] | [] | [
[],
[],
[]
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9mdx60 | Monday Methods: On why 'Did Ancient Warriors Get PTSD?' isn't such a simple question. | It's one of the most commonly asked questions on AskHistorians: did soldiers in the ancient world get PTSD?
It's a simple question, one that could potentially have a one word answer ('yes' or 'no'). It's one with at least some empathy - we understand that the ancients lived in a harsh, brutal world, and people these d... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9mdx60/monday_methods_on_why_did_ancient_warriors_get/ | {
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"https://www.reddit.com/r/AskHistorians/comments/9ie5wq/did_vietnam_war_vets_come_home_with_pstd/e6j6nlf/",
"https://www.reddit.com/r/AskHistorians/comments/6wwt0p/is_there_any_evidence_that_the_soldier_in_this/dmbla23/",
"https://www.reddit.com/r/AskHistorians/comments/73hiqe/the_first_copy_of_the_dsm_was_publ... | [
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[],
[],
[],
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"https://www.cbc.ca/radio/ideas/how-to-think-about-science-part-22-1.464995"
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[],
[],... | |
1cnxcc | why won't mexico extradite criminals fleeing from american authorities? | Maybe there have been cases where they have, but when criminals run to and cross the Mexican border, are the police really just like "Welp, that's it I guess"? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1cnxcc/eli5_why_wont_mexico_extradite_criminals_fleeing/ | {
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"They will, and do, about 100 a year. A couple hundred more non-Mexican fugitives are deported each year and picked up by authorities at the border - there's no need for extradition if the person doesn't have a legal right to be in Mexico in the ... | [] | [] | [
[]
] | |
2atvhr | I balk at the gates of the PhD. What next? | Please note, this is a question about the practice of history. Not historical events.
So I completed my MA in History in August 2013. I enjoyed the experience in a sadomasochistic way. Researching whatever the hell I wanted was cool, being the creator of new knowledge was cool, and the experience of being immersed in ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2atvhr/i_balk_at_the_gates_of_the_phd_what_next/ | {
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"Some common answers: teaching public school/community college history or stepping up to law school.\n\nNow that those are out of the wa... | [] | [] | [
[],
[],
[],
[],
[
"http://jobs-emplois.gc.ca/rpl-rlp/index-eng.php",
"http://jobs-emplois.gc.ca/psr-rp/index-eng.php"
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490i3c | what male body part produces the tiny amount of estrogen men do have? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/490i3c/eli5_what_male_body_part_produces_the_tiny_amount/ | {
"a_id": [
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"text": [
"Since men lack ovaries, they need to produce estrogen through a process involving an enzyme called aromatase that transforms testosterone into estradiol. \nThe enzyme aromatase is produced by the adrenal glands.\n",
"M... | [] | [] | [
[],
[
"http://www.hindawi.com/journals/ije/2015/165215/"
]
] | ||
3b4b6j | decrypting files. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3b4b6j/eli5_decrypting_files/ | {
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"Did you ever get one of those decoder rings in a cereal box when you were a kid? It works like that. \n\nWhen the file is encrypted, the computer uses it decoder ring to translate the file into an encrypted file. It gives... | [] | [] | [
[],
[
"http://www.pagedon.com/rsa-explained-simply/my_programming/"
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] | ||
dpwfrv | when in colonies, how do bats use echolocation without getting confused? | I recently visited a location in Austin, Texas in which 100,000 bats live under a bridge. I could hear all of them squeaking at the same time but was wondering how they can use their echolocation without being confused by other bats squeaks. is there a way they can find their own squeak?
It seems comparable to trying... | askscience | https://www.reddit.com/r/askscience/comments/dpwfrv/when_in_colonies_how_do_bats_use_echolocation/ | {
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... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[
"https://www.bbc.co.uk/programmes/p07gh4yz"
],
[],
[
"https://youtu.be/-FnluXQCqDM"
],
[
"https://www.sciencemag.org/news/2014/11/holy-blocked-bat-signal-bats-jam-each-others-calls"
],
[
"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3680708/"... | |
1rjplu | If 1080 is the number of pixel lines going across the tv, why isn't the picture on larger televisions distorted? | Are the pixels bigger? Wouldn't that cause distortion as well? Maybe I'm not understanding this correctly... | askscience | http://www.reddit.com/r/askscience/comments/1rjplu/if_1080_is_the_number_of_pixel_lines_going_across/ | {
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"score": [
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"text": [
"A pixel is not a little square: _URL_0_\n\nThat paper might be a little dense, so a simpler explanation is this: a real image is continuous, it is not composed of little boxes. But computers and digital TVs can't work with c... | [] | [] | [
[
"http://www.cs.princeton.edu/courses/archive/spr06/cos426/papers/smith95b.pdf",
"https://graphics.stanford.edu/wikis/cs148-11-summer/FrontPage?action=AttachFile&do=get&target=148-1.pdf"
],
[]
] | |
wyisu | If a male has HIV, is there a way to impregnate a woman without infection? | Is the HIV in the sperm itself or just the fluid? Is there any technique, like maybe taking an egg and sperm out to artifically inseminate and then replace? | askscience | http://www.reddit.com/r/askscience/comments/wyisu/if_a_male_has_hiv_is_there_a_way_to_impregnate_a/ | {
"a_id": [
"c5hm97b"
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"text": [
"HIV has a very low transmission rate from PIV sex. This can be further attenuated by treating the male with anti-viral therapy to lower the viral load. Artificial insemination, as well as 'sperm washing', are also techniques to prevent transmis... | [] | [] | [
[
"http://www.ncbi.nlm.nih.gov/pubmed/20679759",
"http://www.ncbi.nlm.nih.gov/pubmed/20534606"
]
] | |
4vvxdu | how do colourblindness correction sunglasses work? | I saw a video on Facebook today of sunglasses that allow colourblind people to see the full colour spectrum. I'm assuming that this is obviously doesn't work with black-white colourblindness, but how would it effect the most popular colourblindness disorders? I thought that this had to do with the inability to see cert... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4vvxdu/eli5_how_do_colourblindness_correction_sunglasses/ | {
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"text": [
"If you take the most common case, which is red to green colour blindness, The persons red and green photopigments have more overlap than normal, making them unable to see certain... | [] | [] | [
[],
[],
[],
[]
] | |
floxx3 | If we assume the Bible frowns upon conspicuous material and monetary gain, when and did achieving wealth become normal and desirable in contemporary western culture? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/floxx3/if_we_assume_the_bible_frowns_upon_conspicuous/ | {
"a_id": [
"fl0g3ja"
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"text": [
"Max Weber's classic Protestant Ethic and the Spirit of Capitalism answers this question in a way that I have always found convincing, though it is contested. \n\nEssentially, the puritanical Calvanist sect believed that everyone was either prede... | [] | [] | [
[]
] | ||
sxwwb | Do the eyes have any type of influence on what we "hear"? Details inside. | So, interesting problem that happened to me. I am viewing this image of a maze, it's black on white color, and it's in a zoom to where the density of the black and white pixels become somewhat disorienting.
Now the interesting part: when I zoom in to a certain extent, I hear a high-pitched sine-wave-like whine in my e... | askscience | http://www.reddit.com/r/askscience/comments/sxwwb/do_the_eyes_have_any_type_of_influence_on_what_we/ | {
"a_id": [
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"score": [
5,
9,
3
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"text": [
"Sounds like synaesthesia to me",
"I don't know what's happening in your particular case, but the answer to the topic is \"yes\".\n\nThe [McGurk effect](_URL_1_) is an example of how our vision can a... | [] | [
"http://i.imgur.com/DzgSn.png",
"http://i.imgur.com/Jy96U.png"
] | [
[],
[
"http://www.youtube.com/watch?v=G-lN8vWm3m0",
"http://en.wikipedia.org/wiki/McGurk_effect"
],
[]
] | |
66t9ms | Why does the UK have such a good track record with counterinsurgencies? For example, the Mau Mau Rebellion, the Dhofar Rebellion, and the Malaysian Emergency. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/66t9ms/why_does_the_uk_have_such_a_good_track_record/ | {
"a_id": [
"dgldhwi"
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24
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"text": [
"A better question would probably be whether the British deserve a reputation for having a \"good track record with counterinsurgencies.\" If we are only considering an end to combat operations without total withdrawal *à la* the United States in... | [] | [] | [
[]
] | ||
7y0ifa | Mental hospitals used to be a thing, why did they go out of favor? | After this latest shooting and the sudden emphasis on mental health, it got me thinking "why did those go away in the first place"? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7y0ifa/mental_hospitals_used_to_be_a_thing_why_did_they/ | {
"a_id": [
"dud65mv"
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"text": [
"Broadly speaking, what have over the years been called bedlams, insane asylums or mental hospitals (or a variety of other less salubrious terms) - places to house people with serious mental health issues - have always been problematic. The ideal... | [] | [] | [
[
"http://ajph.aphapublications.org/doi/abs/10.2105/AJPH.2014.302242",
"https://ps.psychiatryonline.org/doi/abs/10.1176/appi.ps.201300141",
"http://www.masswerk.at/elizabot/",
"https://www.reddit.com/r/AskHistorians/comments/5pxr7o/what_lead_to_the_rapid_increase_of_patients_being/dcvi6kz/"
]
] | |
3usugv | how do small businesses contribute more to the economy than large chains? | With small business saturday ive been seeing a lot about how supporting small businesses could end up putting more money into the economy. I wanted to know if stuff like [this](_URL_0_) was real, and if so how. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3usugv/eli5_how_do_small_businesses_contribute_more_to/ | {
"a_id": [
"cxhi40z"
],
"score": [
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"text": [
"They are \"less efficient,\" meaning more money stays in the local community and less goes to stockholders a thousand miles away. \n\nPut another way, large chains are very efficient at whisking money out of your town and distributing it to stock... | [] | [
"http://imgur.com/ymU3ppO"
] | [
[]
] | |
308u5i | What actually holds earth crust from sliding around ? | Are the continents just balanced mass and rotational inertia wise ?
Or the plates are just sturdy enough so it doesn't happen? | askscience | http://www.reddit.com/r/askscience/comments/308u5i/what_actually_holds_earth_crust_from_sliding/ | {
"a_id": [
"cptsbmj"
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"score": [
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"text": [
"Answering this is a little hard because I'm not sure what you are thinking about by the word \"sliding\".\n\nThe plates *do* slide around, driven by mid-ocean ridges and subducting oceanic crust, among other things. It just happens slowly.\n\nThe... | [] | [] | [
[]
] | |
wfwlv | If I walk somewhere, I expend X calories to go Y miles. If I bike somewhere, I can expend the same X calories, but go 2-3Y miles. I know this intuitively, but I don't know why it is so. Where does the extra energy come from? | askscience | http://www.reddit.com/r/askscience/comments/wfwlv/if_i_walk_somewhere_i_expend_x_calories_to_go_y/ | {
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"text": [
"Having run 30 minutes and cycled 30 minutes last night I can help with this a bit. Running is a different motion to cycling, you lose energy through more means, swinging arms, impact with the ground ect... | [] | [] | [
[],
[],
[]
] | ||
1brc7d | Floating droplet | OK so I was drinking my beer, a high gravity hurricane to be specific. For a few seconds, there was a droplet of beer/water floating on the surface. It didn't coalesce with the rest of the beer, and seemed stable. I should have grabbed a picture, but I decided to shake the beer a bit and then it finally coalesced into ... | askscience | http://www.reddit.com/r/askscience/comments/1brc7d/floating_droplet/ | {
"a_id": [
"c99g0lw",
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"score": [
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2
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"text": [
"Beer has chemical compounds like gluten, sugars, and more that can collect around a small droplet to form a \"shell\" similar to the surface of a soap bubble. This may have been the cause of the stability.\n\nQualification: ... | [] | [] | [
[],
[]
] | |
af6g19 | does cbd oil give you the munchies? if so, why? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/af6g19/eli5_does_cbd_oil_give_you_the_munchies_if_so_why/ | {
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"score": [
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"text": [
"There are 113 known cannabinoids. Many have some effect or another on appetite, but those effects vary greatly.\n\nTHC, the most well-known cannabinoid (mostly for creating the 'high'), seems to have the greatest impact on appetite according to... | [] | [] | [
[]
] | |
2fcuha | why does string theory matter? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fcuha/eli5_why_does_string_theory_matter/ | {
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"text": [
"It is a theoretical framework that potentially allows for a 'Theory of everything' by incorporating gravity, and as such potentially approaches a more fundamental description of e... | [] | [] | [
[],
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[]
] | ||
4c3ngk | computer browser adblockers are amazing yet every single phone adblocker can't do anything, whys that | I had a rooted phone with adaway and it still wasn't enough to stop ads from my phone. Clicking on something would constantly open another tab to another site telling me I had a virus and making my phone vibrate. Especially from file downloading sites.
Yet on my pc both chrome and Firefox cannot be cracked with ubloc... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4c3ngk/eli5_computer_browser_adblockers_are_amazing_yet/ | {
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32,
10,
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"text": [
"AdAway blocks advertisements by redirecting known sources of ads to localhost - essentially a /dev/null solution. The reason this is the preferred method on Android is because many devices are limited... | [] | [] | [
[],
[
"https://noscript.net/nsa/",
"https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/"
],
[]
] | |
1tlpju | why do gifts and pics on reddit take longer to load sometimes more than others? | Like this morning, for example. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1tlpju/why_do_gifts_and_pics_on_reddit_take_longer_to/ | {
"a_id": [
"ce96n5z"
],
"score": [
2
],
"text": [
"Either your ISP gets heavy traffic during peak times, reddit is overloaded, or it's in your head."
]
} | [] | [] | [
[]
] | |
2rbwlx | eli: why can't you see the fog that is immediately around you? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rbwlx/eli_why_cant_you_see_the_fog_that_is_immediately/ | {
"a_id": [
"cnefxiv",
"cneg5dk",
"cneklpo",
"cneor3m",
"cneqx99"
],
"score": [
12,
125,
3,
2,
15
],
"text": [
"The moisture particles immediately around you aren't numerous enough to block the light. As you get farther away, a sufficient amount of particles exist t... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
1mngf8 | Did domestic-sized cats exist before we began breeding them? | Domestic cats are quite small and I'm not sure how good of hunters they are. I understand how "big cats" survived, they're quite impressive species, but if house cats existed before houses did, then where did they exist and how? | askscience | http://www.reddit.com/r/askscience/comments/1mngf8/did_domesticsized_cats_exist_before_we_began/ | {
"a_id": [
"ccazowp"
],
"score": [
4
],
"text": [
"Wild domestic-sized cats continue to exist today. The [domestic cat](_URL_1_) is about an \"average 23–25 cm (9–10 in) in height and 46 cm (18.1 in) in head/body length\" and weighs \"between 4–5 kg (8.8–11 lb)\".\n\nClosely related species like ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Felis",
"http://en.wikipedia.org/wiki/Cat#Anatomy",
"http://en.wikipedia.org/wiki/Feral_cat",
"http://en.wikipedia.org/wiki/African_wildcat",
"http://en.wikipedia.org/wiki/Wild_cat"
]
] | |
1gm9z6 | if china is not fully communist. what aspects of the country are? eli5 | People don't all get paid the same as the economy is not socialist. The only thing I actually know of China being different is that it's a single party state and they have restrictions on stuff like Internet.
So.. What makes China communist? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1gm9z6/if_china_is_not_fully_communist_what_aspects_of/ | {
"a_id": [
"call2ax",
"calpaue",
"calu5f1"
],
"score": [
122,
7,
5
],
"text": [
"EDIT: This ended up longer way than I expected, but it's still ELI5 material. I'm going to keep adding and revising info as it comes to me.\n\nThink of it this way: Communism means you get what you wa... | [] | [] | [
[],
[],
[]
] | |
21jz60 | The Toba eruption was one of the largest ever and it may have resulted in the "extinction" of other human species. Is this true? | Hey, I'm looking for good sources (studies, articles, etc) of info and would love your assistance.
Google search isnt giving me legit studies, so I'd like your help.
Does anyone know about this event? Please share.
Thank you | askscience | http://www.reddit.com/r/askscience/comments/21jz60/the_toba_eruption_was_one_of_the_largest_ever_and/ | {
"a_id": [
"cge2qcl"
],
"score": [
3
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"text": [
" > \"The Toba Supereruption\n\n\n > While Haslam and Petraglia [2010] showed that a 1000-year glacial period started just before the eruption of the Toba volcano on the island of Sumatra, Indonesia, 74,000 years ago, disproving the theory that t... | [] | [] | [
[
"http://onlinelibrary.wiley.com/doi/10.1002/2013EO350001/pdf"
]
] | |
52rnh2 | if bodies miscarry babies that have abnormalities why are there still children born with defects? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/52rnh2/eli5_if_bodies_miscarry_babies_that_have/ | {
"a_id": [
"d7mnoaq",
"d7mowd8",
"d7moxev",
"d7mq50e",
"d7mqocu",
"d7mr3dn",
"d7n3yh2"
],
"score": [
8,
9,
3,
2,
2,
2,
3
],
"text": [
"Handicapped babies don't automatically miscary, an otherwise healthy baby can be miscaried due to many other reaso... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | ||
3nwkrn | How did vikings and other dwellers of the north deal with the darkness during winter? | It strikes me that people of antiquity would have had lives strongly dictated by whether the sun was up or not. Sure in your home you could have a fire going on the hearth providing heat and light but where candles and lamps affordable enough before industrial revolution for common people to work outdoors during the ni... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3nwkrn/how_did_vikings_and_other_dwellers_of_the_north/ | {
"a_id": [
"cvs8a36"
],
"score": [
8
],
"text": [
"The short answer is that generally speaking, one had to try to make the most out of the light whenever it was available. However, the annual rhythm was such that there wasn't that much outdoors work to be done during the darkest days of the year.... | [] | [] | [
[
"http://www.helsinki.fi/kansatiede/histmaatalous/extrat/turku/perinteinenkarjatalous.htm"
]
] | |
86csuy | do people who wear glasses have whiter eyes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/86csuy/eli5_do_people_who_wear_glasses_have_whiter_eyes/ | {
"a_id": [
"dw41qsx"
],
"score": [
3
],
"text": [
"Not that I’ve ever heard. \n\nI’ve worn glasses for the past 15 years or so and my eyes definitely have their no-so-white days. \n\nYou may be noticing a difference because 1) lenses tend to magnify the eyes a bit, making them appear slightly lar... | [] | [] | [
[]
] |
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