q_id stringlengths 5 6 | title stringlengths 3 296 | selftext stringlengths 0 34k | document stringclasses 1
value | subreddit stringclasses 1
value | url stringlengths 4 110 | answers dict | title_urls list | selftext_urls list | answers_urls list |
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48wz1r | why do electric trains that use 25kv overhead lines only require one wire to function when a traditional circuit needs a positive and negative? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/48wz1r/eli5_why_do_electric_trains_that_use_25kv/ | {
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"text": [
"The rails can act as a ground, that is, the second conductor.\n\nAll circuits need a positive and negative. The fundamentals of circuit theory are based on KVL (sum of voltage in a closed path is zero) and KCL (current in eq... | [] | [] | [
[],
[]
] | ||
3xlrbf | what is it about coming off antidepressants that gives the brain zap and tingling? | So I've been on and come off of about 7 different antidepressants (SSRIs and SNRIs) and each time have experiences brain zaps and tingling amongst other withdrawal effects, but none of my psychiatrists have warned me about withdrawal, and one tried to tell me that it was just anxiety, despite the fact that I know what ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3xlrbf/eli5_what_is_it_about_coming_off_antidepressants/ | {
"a_id": [
"cy5zwhe"
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"score": [
6
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"text": [
"This is what you have: _URL_0_\n\nCompletely normal. "
]
} | [] | [] | [
[
"https://en.wikipedia.org/wiki/Antidepressant_discontinuation_syndrome"
]
] | |
25qnbp | how in the hell do nicknames work in english ? | Hi Reddit ! I'm French, and I have two questions.
First one is : how do you get Dick from Richard ? How do you get Bob from Robert ? In France, most of our nicknames are either the first syllable (Samantha becomes Sam) or the first syllable, but doubled (my name is Myriam, the logical nickname is Mymy).
Seconde one i... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/25qnbp/eli5_how_in_the_hell_do_nicknames_work_in_english/ | {
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2,
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"text": [
"A lot of it is a rhyming scheme. So from Richard, it becomes Rick, an... | [] | [] | [
[],
[
"http://www.todayifoundout.com/index.php/2012/04/how-dick-came-to-be-short-for-richard/"
],
[],
[],
[
"http://en.wikipedia.org/wiki/Rhyming_slang"
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[],
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3oe3id | why is data consumption such an issue all of a sudden when years ago it was all unlimited? | I've known plenty of Canadians who have to purchase multiple services from ISPs in order to just do regular activities. It wasn't long when plans and advertising included unlimited data on everything just to sell products. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3oe3id/eli5_why_is_data_consumption_such_an_issue_all_of/ | {
"a_id": [
"cvwe0yz",
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"score": [
7,
8,
4
],
"text": [
"Because the Internet is so much more useful and isps decided if they can charge for it they would. They are just trying to milk people for all of the cash. ",
"Streaming has gotten *huge* in the pa... | [] | [] | [
[],
[],
[]
] | |
23av7u | why don't pro-russian ukrainians move to russia? | From my understanding of the conflict a big part of the situation in Ukraine has to do with ethnic Russians and Pro-Russian citizens. Why don't those people just move to Russia? It seems like a simple solution to me but I'm sure it's much more complicated than that. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/23av7u/eli5_why_dont_prorussian_ukrainians_move_to_russia/ | {
"a_id": [
"cgv6mly"
],
"score": [
2
],
"text": [
"My best guess, the Pro-Russian, aka Russian speaking Ukrainians see the Ukraine as a part of of Russia. Think of it in like this instead, why dont the Pro-America Californians just head to Nevada or Oregon"
]
} | [] | [] | [
[]
] | |
1daeoo | h2o seems like a fairly simple chemical compound. is it possible to create water from hydrogen and oxygen and if so why is this practice uncommon? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1daeoo/eli5_h2o_seems_like_a_fairly_simple_chemical/ | {
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"c9ofpep",
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"score": [
26,
2
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"text": [
"It most certainly is, by burning hydrogen. The question is, in what situation would this method of producing water be useful? If you don't have access to water but you have the facilities to store huge amounts of hydrogen... | [] | [] | [
[],
[]
] | ||
8icgbz | if vinegar is just over-ripe alcohol, why is it so much cheaper than booze? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8icgbz/eli5_if_vinegar_is_just_overripe_alcohol_why_is/ | {
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"text": [
"It's not really overripe alcohol.\n\nAlcohol is created by adding things in a controlled pr... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
2c3oeb | why can we replicate human movements so much better in video games than in real robots? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2c3oeb/eli5_why_can_we_replicate_human_movements_so_much/ | {
"a_id": [
"cjblzll"
],
"score": [
5
],
"text": [
"Because video game people don't have the limitation of being a physical thing."
]
} | [] | [] | [
[]
] | ||
bgmz2e | if a person is thought to be dead and their will has been given out to the corresponding recipients, but later found that the person is actual alive, what would happen to their belonging then? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bgmz2e/eli5_if_a_person_is_thought_to_be_dead_and_their/ | {
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"It would depend on the circumstances. \n\nLike, if someone faked their own death and started a new life they would have commited fraud (and probably other crimes) by doing so and, one would assume, forfeit any claim to their belongings/wealth if ... | [] | [] | [
[]
] | ||
rzahp | why facebook would oppose sopa and support cispa. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/rzahp/eli5_why_facebook_would_oppose_sopa_and_support/ | {
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"text"... | [] | [] | [
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"http://www.democraticunderground.com/1002527898"
],
[],
[],
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"http://www.digitaltrends.com/opinion/cispa-is-not-the-new-sopa-heres-why/"
],
[],
[],
[],
[
"http://w... | ||
47hyo6 | what are jpeg artifacts? | I've heard the term in a lot of places mostly on image sites but I have always been curious was it meant. (The explanations on said sites were very vague and hard to understand.) Also curious how they happen.
Edit: word | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/47hyo6/eli5what_are_jpeg_artifacts/ | {
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"text": [
"An easy way to understand the basic concept is to take it to an absurd level. \n\nIf you figured out the average color of an entire image, you could replace the entire image with a single color. It woul... | [] | [] | [
[
"https://www.imperialviolet.org/binary/jpeg/"
],
[
"http://blog.topazlabs.com/wp-content/uploads/2011/04/artifact_example.jpg"
],
[
"https://upload.wikimedia.org/wikipedia/commons/b/b4/Asterisk_with_jpg-artefacts.png",
"http://blog.codinghorror.com/content/images/uploads/2005/12/6a0120a85d... | |
5hy1ze | why is the "one-china" policy so important, to the us, to china? | I can't seem to wrap my head around why this is such a big issue. From everything I have read it seems to be a policy around political posturing with no real benefit to anyone. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5hy1ze/eli5_why_is_the_onechina_policy_so_important_to/ | {
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"text": [
"It's important to China because China considered Taiwan to be a rogue province. Taiwan considered mainland China to be a Communist-occupied part of their co... | [] | [] | [
[],
[],
[],
[],
[]
] | |
24rx7h | why does the dual core cpu in my laptop/desktop need big heat sinks and active fans to stay cool but the 2.5ghz quad core cpu in my phone requires nothing and doesn't melt my phone? | Just as the title. I was wondering why the really high end CPUs in phone don't need a buttload of cooling despite having more power than my current laptop (which is often running fans.) | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/24rx7h/eli5_why_does_the_dual_core_cpu_in_my/ | {
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... | [] | [] | [
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cv0kvs | do some plants produce more oxygen than others? is the amount of oxygen produced only related to the size of a plant? | I was just thinking about plants and if there are some that can produce more oxygen than others, maybe because they have different leaf structures, or another reason? Could a pine tree and an oak tree of the same size produce different amounts? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cv0kvs/eli5_do_some_plants_produce_more_oxygen_than/ | {
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"ey142gi"
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"text": [
"Plants do produce different amounts of oxygenation dependant on the species, size and leaves present (the more CO2 taken in, the more O2 released basically). The plants photosynthetic processes (C3 / C4) also effect oxygenation."
]
} | [] | [] | [
[]
] | |
2i1g79 | if water damage is so bad, how come houses can be doused by rain during construction? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2i1g79/eli5if_water_damage_is_so_bad_how_come_houses_can/ | {
"a_id": [
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"score": [
6,
5
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"text": [
"When building a house once the basic frame is up you get the roof on it before anything like drywall, carpeting or anything goes in. That is what gets water damaged. Although plywood flooring and such can warp if water stand... | [] | [] | [
[],
[]
] | ||
4r3hsb | how weather prediction works and why it requires massive computing power | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4r3hsb/eli5_how_weather_prediction_works_and_why_it/ | {
"a_id": [
"d4xzunq",
"d4y0frd"
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"score": [
4,
12
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"text": [
"ELI5: We know something about weather, but predicting weather is really really hard. So we just plug a bunch of stuff into a computer and the computer makes a guess. The more stuff we find out about weather the more we pu... | [] | [] | [
[],
[]
] | ||
416i9g | why is mixing up left and right so easy, even after years of practice? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/416i9g/eli5_why_is_mixing_up_left_and_right_so_easy_even/ | {
"a_id": [
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"score": [
2
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"text": [
"Do these help?\n\n_URL_0_\n\n_URL_1_"
]
} | [] | [] | [
[
"https://www.reddit.com/r/explainlikeimfive/comments/3mvn0i/eli5_why_is_it_so_easy_to_confuse_left_and_right/",
"https://www.reddit.com/r/explainlikeimfive/comments/1ja78q/why_is_it_so_hard_for_some_people_especially/"
]
] | ||
243amz | if the sun is made of gas then how is it dense enough to be the center of our solar system? or do i have it wrong? | i was always told the sun is a mass of hydrogen in a fusion reaction, is this true and if so, how is it dense enough to be the center of our solar system? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/243amz/eli5_if_the_sun_is_made_of_gas_then_how_is_it/ | {
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"text": [
"It is very, very big. So even if though the hydrogen and helium are very light elements, there are just so much ... | [] | [] | [
[],
[],
[],
[],
[],
[
"http://vimeo.com/m/5377756"
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[]
] | |
15x5td | why is it that even though research shows homework is bad for the students, schools has shown no sign of change? | Possibly relevant, I'm from Denmark.
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15x5td/eli5_why_is_it_that_even_though_research_shows/ | {
"a_id": [
"c7qrifh"
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"score": [
2
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"text": [
"Because it isn't entirely true. Elementary age students given homework don't show a significant improvement in learning outcomes up until about grade 3, as they don't have the necessary attention spans to concentrate for more than about 10 minute... | [] | [] | [
[]
] | |
5t5xin | how can the nfl be a non-profit entity (tax-wise) when it only seems to exist for the sole purpose of making millions, if not billions of dollars? taxes that could be used for so much good? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5t5xin/eli5_how_can_the_nfl_be_a_nonprofit_entity/ | {
"a_id": [
"ddke7c1",
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"score": [
2,
2
],
"text": [
"Non-profit simply means you don't generate a profit, it doesn't mean that the revenue can't go towards compensation. The NFL is a collection of franchises. Those franchises can turn profits, but the central organization, t... | [] | [] | [
[],
[]
] | ||
57ke4q | how do trees get water to their top portions without any sort of pump (like a heart) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/57ke4q/eli5_how_do_trees_get_water_to_their_top_portions/ | {
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"text": [
"Imagine a piece of cloth where you dip one end in a bowl of water. You can see how the water slowly rises up inside the cloth. That's what's happening inside the tree, and this ... | [] | [] | [
[],
[],
[],
[]
] | ||
72bb38 | how can pro fighters take so much punishment to to head, when ordinary people can often ko each other with a single strike? | Watching street fights on youtube, people get KO'ed all the time. Pro fighters have incredible striking, yet it seems to take so much more to get a KO in pro fighting.
I know it also often occurs in the ring/octagon, but if you put a regular dude in there with the champ they will get KO'ed very quickly.
| explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/72bb38/eli5_how_can_pro_fighters_take_so_much_punishment/ | {
"a_id": [
"dnh76cs"
],
"score": [
9
],
"text": [
"A lot of the techniques that fighters train on is to block and avoid direct hits. So big direct hits in on a fighter is rare and often does result in a knock out."
]
} | [] | [] | [
[]
] | |
8fqx1f | why wouldn't they just put the new amazon headquarters in a city like detroit? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8fqx1f/eli5_why_wouldnt_they_just_put_the_new_amazon/ | {
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"text": [
"As much as i would like that being from Michigan. I don't think the the quality of people to fill 50,000 jobs is there. Most people in that area already have good jobs. I'm no expert either. I just do... | [] | [] | [
[],
[],
[]
] | ||
307lss | how did jewish bankers succeed back when there were no laws protecting loan providers and what did they do when someone defaulted? | I learned that the Jewish succeeded in banking because people from other religions believed it was wrong to lend money with an interest rate (also known as usury). However, I'm curious about what Jewish bankers did when people defaulted on loans in Christian-ruled areas. Did people go to court, and did courts still hon... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/307lss/eli5how_did_jewish_bankers_succeed_back_when/ | {
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"score": [
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"text": [
"Christianity has no rules against getting loans, it had rules against lending. And many places did have laws protecting bankers and their investments.\n\nAs for \"moving to a far away place\", that wasn't an option. You coul... | [] | [] | [
[],
[]
] | |
cyua58 | why is it that pictures of certain screens (usually backlit ones, like tv’s or laptop screens) get that kind of weird grid that moves when you look at it in the photo? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cyua58/eli5_why_is_it_that_pictures_of_certain_screens/ | {
"a_id": [
"eyu7wl9"
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"score": [
3
],
"text": [
"It can be moire; likely it's due to the polarization filters that all LCD screens use. \n\n_URL_1_\n\n_URL_0_"
]
} | [] | [] | [
[
"http://www.bigshotcamera.com/learn/lcd-display/filter",
"https://en.wikipedia.org/wiki/Moir%C3%A9_pattern"
]
] | ||
f5p52j | why do cockroaches die almost instantly when it gets contact with soap bubbles. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f5p52j/eli5_why_do_cockroaches_die_almost_instantly_when/ | {
"a_id": [
"fi046yy"
],
"score": [
10
],
"text": [
"A lot of insects breathe through sort-of pores on their body, so the soap film essentially suffocates them."
]
} | [] | [] | [
[]
] | ||
2all5d | why some games glitch on some people's consoles and not on others when they are exactly the same software on exactly the same hardware? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2all5d/eli5_why_some_games_glitch_on_some_peoples/ | {
"a_id": [
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2,
5
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"text": [
"Could you provide an example of this? It sounds like it might have been a non-replicable glitch, or you're replicating it wrong.",
"Because the world is not a perfect place, and any amount of damage could have been done ... | [] | [] | [
[],
[]
] | ||
8kuspx | how do bare-knuckle boxers not/rarely break their own fists? | I've read somewhere that traditional boxers use gloves to protect themselves not the opponents face. But when those same boxers don't use gloves they tend to injure themselves. Bare Knuckle boxers rarely hurt themselves, what's the difference in technique? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8kuspx/eli5_how_do_bareknuckle_boxers_notrarely_break/ | {
"a_id": [
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"score": [
2,
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12
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"text": [
"Over time the bones grow denser and denser and over time you'll be able to be bare knuckle boxing.\n\nSource: i started boxing with no gloves and i couldn't hit the bag once without being in extreme pa... | [] | [] | [
[],
[],
[]
] | |
6i0198 | if liquid and gas are shapeless why is there a limit to how much it can be compressed? | What I mean is, if I have a pool full of water why can't I put so much pressure on the water until it becomes flat as a sheet of paper. The same thing with gas, if I go scuba diving somewhere. Why cant I fill a single tank of gas with a months worth of oxygen? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6i0198/eli5_if_liquid_and_gas_are_shapeless_why_is_there/ | {
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7,
44,
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"text": [
"Because fluids are still made out of atoms. In this situation, you can think of them as balls moving around in an otherwise empty box. If there's a lot of room between the balls, ... | [] | [] | [
[],
[],
[],
[]
] | |
a47r8o | what crosses the line on drawn pornography consisting of underage characters? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a47r8o/eli5_what_crosses_the_line_on_drawn_pornography/ | {
"a_id": [
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"score": [
2,
3
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"text": [
"I've read that it's allowed as long as it isn't a representation of a real underage person.",
"It depends on two things: the law of the land the material is in, and the moral preferences of those confronted with the mate... | [] | [] | [
[],
[]
] | ||
7muv89 | how does scribbling on a thicker stack of paper make a pen work again when it stops? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7muv89/eli5_how_does_scribbling_on_a_thicker_stack_of/ | {
"a_id": [
"drwtvve"
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"score": [
2
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"text": [
"I assume you are talking about a ballpoint pen. The ink can dry around the ball after a while. If you try to write on a single sheet of paper on a hard surface, the ball has very little contact with the paper and not enough friction won’t turn it... | [] | [] | [
[]
] | ||
1sp6jj | why do people have deep (instead of superficial) pain in their head during headaches or a brain bleed yet neurosurgeons can operate while a person is awake? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sp6jj/eli5_why_do_people_have_deep_instead_of/ | {
"a_id": [
"cdztgls"
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"text": [
"Most of your brains tissue does not have pain receptors, so the surgeon is able to operate using a minimal amount of anesthetics. The patient is usually kept awake because changes in their behavior and perception can be used to judge the surgeon'... | [] | [] | [
[]
] | ||
eev1n7 | can you explain how online data works and why the corporations want it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/eev1n7/eli5_can_you_explain_how_online_data_works_and/ | {
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"So for example if I wanna sell cars and I buy ads from websites, if I have no user data I would have to just randomly show the add to everyone, which is inef... | [] | [] | [
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3zbtfp | wall street | I always hear politicians claim that they will either "tax wall street and put regulations on Wall Street" or "unshackle Wall Street", but what exactly is "Wall Street" (other than a street located in New York City)?
How would one decide how to tax a certain area (if that is what they want to do)? Or is "Wall Stree... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3zbtfp/eli5_wall_street/ | {
"a_id": [
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"score": [
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"text": [
"It's the financial district of New York, where the New York Stock Exchange (NYSE), American Stock Exchange (AMEX), and several major banks and brokers in lower Manhattan are located. Synonymous with the US financial sector. ... | [] | [] | [
[],
[]
] | |
8a4b3s | why do bulls go so mental when a bull rider is on their back? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8a4b3s/eli5_why_do_bulls_go_so_mental_when_a_bull_rider/ | {
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"There is a cinch belt (called a flank strap) that is wrapped around their body above their thighs that rubs them \"the wrong way\". That said, they are extremely strong and not friendly animals to start with, so it isn't re... | [] | [] | [
[],
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26c7k6 | why is the formula for volume of a sphere 4/3 pi r^3? | I should probably add that I'm in grade 9, so my education goes pretty much that far by Canadian standards, but I tend to understand more complex ideas when explained to me.
Edit:I'm trying to mark it as explained, but it's not working for some reason. Anyways, I'm understanding it now, so thanks to everyone who explai... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/26c7k6/eli5_why_is_the_formula_for_volume_of_a_sphere_43/ | {
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"score": [
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18
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"text": [
"Take a sphere and cut it into a bunch of small pyramids facing towards the center. Then just add up the volume of all the pyramids. \n\n[MathematicsOnline](_URL_0_) has a great video explaining it with animations.",
"Co... | [] | [] | [
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"https://www.youtube.com/watch?v=xuPl_8o_j7k"
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"http://www.wolframalpha.com/input/?i=plot+x%3Dy",
"http://www.wolframalpha.com/input/?i=integrate+x+from+x%3D0+to+x%3D2%28pi%29"
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1sbl47 | why does england have so many different dialects of english but america doesn't have as much even though its a much bigger country | Maybe Im missing something in America but in England every single town has a different accent even though its loads smaller than the USA
I was wondering if there was a reason and what it is | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1sbl47/eli5_why_does_england_have_so_many_different/ | {
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"_URL_0_ \n\nLooks pretty comparable to me.",
"According to [this Wikipedia article](_URL_0_), England has 27 accents, and the United States has 40 accents (I'm only counting \... | [] | [] | [
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885zol | how do films played at a frame rate higher than intended remain synced with the audio? | Say a movie recorded at 24 fps is played back at 60fps, either analog or through digital streaming, how does the sound keep up without being distorted? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/885zol/eli5how_do_films_played_at_a_frame_rate_higher/ | {
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"How does it sync normally?\n \nYou stream a video service, which contains both video and audio. The two are kept completely separate with only one thing to share: A time stamp. So a video system has a r... | [] | [] | [
[],
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] | |
7358xd | what exactly is the point of a tax return? | I recently got my first job and my manager told me i’d have to file taxes but along with that comes a tax return. I’m in school still so i’ve never actually learned or really even talked about taxes with anybody, so from my limited understanding, i pay into like social security, medicare, and federal/state taxes and th... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7358xd/eli5_what_exactly_is_the_point_of_a_tax_return/ | {
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"If everyone had to write a check to the government for their taxes they owe instead of havi... | [] | [] | [
[],
[],
[],
[],
[],
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"https://www.irs.gov/individuals/irs-withholding-calculator"
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] | |
3tekwq | what is economies of scale? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3tekwq/eli5_what_is_economies_of_scale/ | {
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"10 people working individually can make 10 widgets an hour.\n\n10 people working collaboratively, such as in an assembly line, can mak... | [] | [] | [
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59dkgt | how come when people study maths, computer science, or physics they'll eventually burn out after a while, but they can play games like civilization non-stop? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/59dkgt/eli5_how_come_when_people_study_maths_computer/ | {
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"As a studier of math and physics and player of Civ, I feel like I have an answer. It's because math and physics are work and Civ is leisure. I have to do math. If I don't or if I do it poorly, I'm in trouble. I don't have to... | [] | [] | [
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] | ||
1y7un0 | is time theorized to be a continuous property of the universe, or is it discrete? (ie. is there a smallest 'length' of time that can exist and why?) | Title says it all. Is the 'present' moment an infinitely small wave of time that keeps pushing forward, or does it 'tick' with a certain frequency?
I guess using a computer as a metaphor, does the universe have a certain refresh rate?
Edit: obviously nobody knows for certain, but physics must have a theory on this! | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1y7un0/eli5_is_time_theorized_to_be_a_continuous/ | {
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"text": [
"Time quantization is a hypothetical concept. In the modern established physical theories (the Standard Model of Particles and Interactions and General Relativity) time is not quantized.\n\nPlanck time (~ 5.4 × 10−44 seconds) is the unit of time i... | [] | [] | [
[
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1k9uhk | why does it seem impossible to get money and lobbyists out of politics? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1k9uhk/eli5_why_does_it_seem_impossible_to_get_money_and/ | {
"a_id": [
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"text": [
"Because making such a law is against the interest of people with money and lobbyists.",
"The problem is that this \"money\" isn't direct. Let's start from scratch with an example.\n\nThe cake business is doing well. Ever... | [] | [] | [
[],
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] | ||
3vci23 | how do musicians decide which key to write a song in? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3vci23/eli5_how_do_musicians_decide_which_key_to_write_a/ | {
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"text": [
"minor keys are sad, inspiring, uplifting. major keys are dancey and happy. alot of people just look at popular songs and write in the same key to \"choose\" also it has alot to do with what range the singers voice is in"
]
} | [] | [] | [
[]
] | ||
7fk9co | why is it that children must address adults as mr/mrs/etc. in order to be "respectful" to adults? why not just say their name? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7fk9co/eli5_why_is_it_that_children_must_address_adults/ | {
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"text": [
"It is part of a ritual. In the same way you cannot answer a judge with \"yes, Joe, I was there\". The formal wording is suppose to condition a respectful attitude. It works both ways, with the title also restraining the resp... | [] | [] | [
[],
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] | ||
4eww7n | why do people from different countries have extreme differences in body weight/height? | For examples:
Japanese are smaller in height
Pacific Islanders are very heavy/big boned
African Americans are very athletic (Dominate all sports/boxing)
| explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4eww7n/eli5_why_do_people_from_different_countries_have/ | {
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"text": [
"Because of Evolution. People have adapted to living conditions all around the world.\n\nAlso like donutshop said nutrition plays a large role. The middle height of men in my country has gone up like 2 inches in last 30 years... | [] | [] | [
[],
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] | |
18ad61 | what's the difference between a single camera tv show and a multi-camera one? | I mean, besides the amount of cameras. I heard of a show lead once dropping a show because of the camera setup change. I forgot which it was, but it was recent. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/18ad61/eli5_whats_the_difference_between_a_single_camera/ | {
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"Single camera shows will have to shoot every scene more than one time to get the coverage of each actor. So, each scene is done multiple time so each actor has the delivery of his/her lines recorded. M... | [] | [] | [
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] | |
30cdfk | why does burning flesh smell so bad, but when we cook meat it smells great? | I've never actually smelled a body burning or anything like that, but I've heard it's not all that pleasant. So why when we cook meat it smells just dandy? Isn't it all the same thing? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30cdfk/eli5why_does_burning_flesh_smell_so_bad_but_when/ | {
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"Have you ever burned the hair on your arm? That smell is rank. Lots of other bits of the body probably smell gross when burned too. I ... | [] | [] | [
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dg40sq | how does pg & e shutting off power to millions in california prevent forrest fires? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dg40sq/eli5_how_does_pge_shutting_off_power_to_millions/ | {
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"text": [
"A legal doctrine called “inverse condemnation,” which is unique to California, makes utilities liable for damages when their equipment causes fires — even if the utility acted responsibly. \n\nSo damned if you do, damned if ... | [] | [] | [
[],
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] | ||
7she63 | fractals, fractal dimension, and power law distribution | All related concepts obviously. I have a Computational Psychology exam next week and one of the topics is emerging complexity. Dimension as a measure of complexity is fairly straight forward but I don't really understand Fractal Dimension, specifically Power Law Distribution beyond examples of Power Law Distributions.
... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7she63/eli5fractals_fractal_dimension_and_power_law/ | {
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"Start with a basic object of 1, 2, and 3 dimensions: the line, square, and cube. We want to express the volume of space they occupy. Now let S be the size of the sides (or how much we scale up/down an object), and V be its volume.\n\nIn 1-D: \nV... | [] | [
"https://www.youtube.com/watch?v=PD2XgQOyCCk"
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[
"http://www.cplusplus.com/articles/LyTbqMoL/serpinskiTriangles.jpg",
"https://imgur.com/a/03ypx"
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3jl669 | why some people in us are illiterate, when going to school is compulsory and if you don't go police will take you under truancy law? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3jl669/eli5_why_some_people_in_us_are_illiterate_when/ | {
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"You're just made to go to school. As in sit in the building for seven hours a day. The law doesn't say you have to learn anything. You can leave as soon as you turn sixteen, even if you don't know two ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Functional_illiteracy"
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[],
[]
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8pavjw | if the speed of sound is the speed at which a wave propogates thru a substance, how can a shockwave travel faster than the speed of sound? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8pavjw/eli5_if_the_speed_of_sound_is_the_speed_at_which/ | {
"a_id": [
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4
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"text": [
"Basically a shock wave isn’t exactly a ‘wave’ per se, its a disturbance that happens due to travelling faster than the speed of sound (for the substance). When you travel faster than the speed of sound, the air in front of y... | [] | [] | [
[],
[]
] | ||
1r1ij5 | how do we get pictures of north korea if north koreans are forbidden from the internet? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1r1ij5/eli5_how_do_we_get_pictures_of_north_korea_if/ | {
"a_id": [
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2
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"text": [
"Under the right circumstances people can get in and out of North Korea. Under even more right circumstances they'll be allowed to have cameras.\n\nNorth Korea also has a government regulated media, including television. Broadcasts can be picked u... | [] | [] | [
[]
] | ||
1oocd5 | what is the difference between principle component analysis (pca) and singular value decomposition (svd)? | They both accomplish pretty much the same thing and are sometimes used interchangeably when referring to a large data set. From what I understand, you use SVD during PCA. I have a moderate understanding on both, but just need a little help understanding their differences. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1oocd5/eli5what_is_the_difference_between_principle/ | {
"a_id": [
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"As I understand it, PCA is a technique in data analysis, and SVD is a mathematical process. So by analogy PCA = \"finding the least squares fit line\" and SVD = that simple linear regression formula we all learn in undergrad.\n\n[This paper on PC... | [] | [] | [
[
"http://www.snl.salk.edu/~shlens/pca.pdf"
]
] | |
8x4m5l | how does our body utilize nutrients so efficiently for growth during puberty? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8x4m5l/eli5_how_does_our_body_utilize_nutrients_so/ | {
"a_id": [
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3
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"text": [
"Bones only have a certain amount of growth in them - in childhood, the ends have thick layers of cartilage called *epiphyses*, and it's these that grow in length, secreting bone behind them. \n\nAs they grow, the epiphyses slowly get thinner and ... | [] | [] | [
[]
] | |
lfne2 | quantum levitation | Okay, so this was on the frontpage. I gotta know, how does this work?
_URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/lfne2/eli5_quantum_levitation/ | {
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"http://en.wikipedia.org/wiki/Meissner_effect",
"... | |
2xfasr | why do we find the smell of some inedible things appealing? | Like flowers, incense, etc. Doesn't really seem to serve any purpose for survival. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2xfasr/eli5_why_do_we_find_the_smell_of_some_inedible/ | {
"a_id": [
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"score": [
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9
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"text": [
"Interesting. It could be that some chemicals in that smell coincide with another smell (of an edible thing)",
"Incense is artificially made to smell good to us and some flowers are evolutionarily selected to smell good ... | [] | [] | [
[],
[]
] | |
3m7nat | why do feminists criticize christianity for female oppression but not islam? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3m7nat/eli5_why_do_feminists_criticize_christianity_for/ | {
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4i748r | - how important actually are exams? | I'm currently doing my exams and not doing well, I do well school but cannot handle and exam situation. Do exams matter as much as we're told in school? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4i748r/eli5_how_important_actually_are_exams/ | {
"a_id": [
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3
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"text": [
"Depends, of course, on the class and how much of your grade the exam is worth. Generally, yes, the exam is absolutely essential to your final grade. Even if you have aced the whole class, not taking t... | [] | [] | [
[],
[],
[]
] | |
3ii8rl | why is it so hard for the media to stop glorifying violent murders, acts of terrorism, school shootings and other violent crimes, knowing full well that sort of journalism only encourages others to commit the same crimes and perpetuate the problem? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ii8rl/eli5_why_is_it_so_hard_for_the_media_to_stop/ | {
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3sihoi | what's better, tylenol or advil? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3sihoi/eli5_whats_better_tylenol_or_advil/ | {
"a_id": [
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"text": [
"One is not better than the other. They are different drugs and they work in different ways. Tylenol is a painkiller whereas Advil is an anti-inflammatory. So, if you have a headache it's Tylenol and if you have a sore back its Advil. The two comb... | [] | [] | [
[]
] | ||
6pftjr | how is helium used by an mri machine? | Based on a post below saying that MRIs use helium, I’m now wondering how. Can anyone explain? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6pftjr/eli5_how_is_helium_used_by_an_mri_machine/ | {
"a_id": [
"dkoy3mg",
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3,
3
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"text": [
"It is a coolant. The magnets in and MRI are incredibly powerful, they use superconductors to make such a powerful magnetic field. With regular copper wire, if you coil the wore and run electricity th... | [] | [] | [
[],
[],
[]
] | |
whdtx | why does skin turn very very white when we are
startled badly? | I think adrenaline drives the blood away from your face? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/whdtx/why_does_skin_turn_very_very_white_when_we_are/ | {
"a_id": [
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"score": [
2,
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"text": [
"And then drives them to the part of your body that induces the 'flight' response: legs, arms, etc so you can run away.",
"It has to do with your body's response to the \"fight or flight\" mechanic. The capillaries in you... | [] | [] | [
[],
[]
] | |
337r3x | how does an adult learn to read? | I larp (live action roleplay), and I'm playing a character who's illiterate. She may learn to read in the future. I don't remember learning to read, so I have no idea how she'd learn.
**What's the process?** Do you memorise the alphabet, then learn rules for sounds paired letters make, and build up words? Do you learn... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/337r3x/eli5_how_does_an_adult_learn_to_read/ | {
"a_id": [
"cqibsn2"
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"text": [
"Learn how the letters of the alphabet sounds. Like, N = \"enn.\" Then sound out words using the sounds the letters make. It fucks up some words, and you'll get corrected, and you'll learn that way."
]
} | [] | [] | [
[]
] | |
cy2hym | when did r/eli5 become a sub to just explain things as opposed to actually explaining things as you would to a 5 yr old ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cy2hym/eli5_when_did_reli5_become_a_sub_to_just_explain/ | {
"a_id": [
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"text": [
"Your request has been removed.\n\nPlease read the Rules. Rule #2 prohibits this kind of question about reddit itself. The Rules make it clear that we're not look?ng for explanations to litteral 5-year olds. Maybe you'd be better making suggest... | [] | [] | [
[]
] | ||
4bdmvj | how is it under debate turkey to join the eu while countries like serbia, literally surrounded by europe, not standing a chance to join too? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4bdmvj/eli5_how_is_it_under_debate_turkey_to_join_the_eu/ | {
"a_id": [
"d185vh5"
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"text": [
"[Serbia is under consideration and is far further along in the process than Turkey](_URL_0_)"
]
} | [] | [] | [
[
"https://en.wikipedia.org/wiki/Accession_of_Serbia_to_the_European_Union"
]
] | ||
16pqo3 | why do we use disposable toilet seat covers when liquid still soaks through? what do they protect us from other than the mental comfort of being "clean"? | I'm just wondering since, say, if there is pee or blood or anything of liquid form, wouldn't that still seep through the cover and, upon seating the throne, touch your booty, negating the use of toilet seat covers in the first place? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/16pqo3/why_do_we_use_disposable_toilet_seat_covers_when/ | {
"a_id": [
"c7ycejz"
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"text": [
"Yes, liquid can still seep through, although it is less likely. These seat covers are still placebos, though, and are misplaced worry, since computer keyboards, doorknobs, and other public items are much dirtier than a toilet seat. Things that c... | [] | [] | [
[]
] | |
19aham | why does countries fight for natural resources like oil and gas when private companies are the companies that mine and refine them? | My example, Russia is providing aid to Syria in the form of an anti aircraft network in case NATO intervene with bombing runs like in Libya. Why are they putting hundreds of millions of dollars of equipment in jeopardy for oil and gas when it will be private companies that mine it, not the government?
question arose r... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/19aham/eli5_why_does_countries_fight_for_natural/ | {
"a_id": [
"c8m9jgy"
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"score": [
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"text": [
"They are pouring lots of money not directly because of resources, but different leaders are more friendly to other leaders. The Russians want to keep Assad in power due to the fact that Assad and Vladimir Putin have good relations and the Russian... | [] | [
"http://www.cnbc.com/id/100496808/page/1"
] | [
[]
] | |
61edkx | why do you feel faint after standing in the hot shower too long? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/61edkx/eli5why_do_you_feel_faint_after_standing_in_the/ | {
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"text": [
"Are you sure you aren't dehydrated?",
"Most probably this happens due to having low blood pressure. Hot water (heat in general actually) raises your body temperature and then our termoregulation mechanics kick in. One of... | [] | [] | [
[],
[]
] | ||
6z2c28 | what are the potential health risks to humans of pervasive plastic contamination? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6z2c28/eli5_what_are_the_potential_health_risks_to/ | {
"a_id": [
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"text": [
"Plastic filaments and particles can interact with receptors on the outside of cells, and can freely enter cells by moving through the fatty cell membrane to disrupt processes inside the cell. The downstream effects are poorly understood, and co... | [] | [] | [
[
"https://www.niehs.nih.gov/health/topics/agents/endocrine/index.cfm"
]
] | ||
d481td | is there no b# and e# on guitar? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d481td/eli5_is_there_no_b_and_e_on_guitar/ | {
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"B# is basically C and E# is F. B and E do not have black keys to the r... | [] | [] | [
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30gjl2 | why is the us dollar so expensive right now? is it expected to go up or down in price? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/30gjl2/eli5_why_is_the_us_dollar_so_expensive_right_now/ | {
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"In the short run, movement in exchange rates is mostly driven by changes in expected interest rates. Right now the US economy is recovering and this means that the fed will increase interest rates sometime soon. This causes the US dollar to gain ... | [] | [] | [
[]
] | ||
3ptczq | what was the first real, officially established "country"? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3ptczq/eli5_what_was_the_first_real_officially/ | {
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"text": [
"**If you mean what's the oldest of the modern nation-states,** take a look at [Wikipedia's list of sovereign states by date of formation](_URL_0_). Based on that list, it looks like China is the oldest (still extant) country to attain sovereignty... | [] | [] | [
[
"https://en.wikipedia.org/wiki/List_of_sovereign_states_by_date_of_formation"
]
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2cpvza | statistical significance | What does it mean that a result is statistically significant at the, say, alpha level of 0.05? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2cpvza/eli5_statistical_significance/ | {
"a_id": [
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"score": [
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"text": [
"Statistical significance addresses whether a pattern is detectible. For example, let's say that you looked at 10 streets, and on each, counted the nuber of red cars and the number of blue cars. You want to ask if there is a ... | [] | [] | [
[],
[]
] | |
1k6n69 | as a pale white person, why do i have freckles mainly on my arms and legs, but only one or two on the soles of my feet and other areas of my body? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1k6n69/eli5_as_a_pale_white_person_why_do_i_have/ | {
"a_id": [
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"text": [
"Freckles are your body's attempt at melanin production in response to ultraviolet light exposure. Your freckles are most developed in the areas of your body most exposed to ultraviolet light.",
"I'm pretty sure freckles ... | [] | [] | [
[],
[]
] | ||
562ag6 | what happens to the cavern created by oil mining? | Does the earth around it just fill the gap? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/562ag6/eli5what_happens_to_the_cavern_created_by_oil/ | {
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"In general, oil deposits aren't in a giant pocket in the earth that's filled with oil. Oil is usually mixed in with rock or sand. Kind of like if you put a soaking wet sponge on a dish rack, eventually ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Hydraulic_fracturing"
],
[],
[]
] | |
7zupvs | why does molten aluminum react to dry ice? | What is happening to make the aluminum do [this?](_URL_0_)
| explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7zupvs/eli5_why_does_molten_aluminum_react_to_dry_ice/ | {
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"text": [
"The hot aluminum melts a bit of the dry ice, which turns to carbon dioxide gas, making bubbles in the liquid aluminum."
]
} | [] | [
"https://www.reddit.com/r/interestingasfuck/comments/7zkgin/pouring_molten_aluminum_into_dry_ice/"
] | [
[]
] | |
bur0s6 | electronegativity and atomic radius | Would someone please explain in detail the relationship between the two? I understand that atomic radius is related to ionisation energy but I can't see how atomic radius may be related to electronegativity. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bur0s6/eli5_electronegativity_and_atomic_radius/ | {
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"text": [
"Electronegativity refers to how many electrons are needed to complete a valence shell. A Fl atom needs 1 electron to complete its valence shell. An O atom needs 2. A Ne atom has a complete valence shell and is happy. \n\nI like to think of it lik... | [] | [] | [
[]
] | |
22swnd | why do some cars have the rpm meter as multiples of 10 (which have to be multiplied by 100) when others have x1000, which is a lot better? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/22swnd/eli5_why_do_some_cars_have_the_rpm_meter_as/ | {
"a_id": [
"cgq3g21"
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"score": [
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"text": [
"It's usually just a design choice. A Volkswagen and a Volvo will have the same PRM range and the same marking intervals, but the Volkswagen will say 10, 20, 30, etc, and the Volvo will say 1, 2, 3, etc."
]
} | [] | [] | [
[]
] | ||
c3w73s | why do men get random boners when we are travelling in cars? (in australia, we call them travellers) | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c3w73s/eli5_why_do_men_get_random_boners_when_we_are/ | {
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"text": [
"No we don't, a \"traveler\" is a drink you take for the road. You're talking about NRBs, No Reason Boners. No reason for those.",
"A lot of it has to do with age, the young... | [] | [] | [
[],
[],
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1tduv1 | what triggers the explosions of atomic and hydrogen bombs? | Do they explode before they hit the ground somehow, or do they explode on impact?
Can anybody explain what goes on inside the bomb before and upon the explosion? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1tduv1/eli5_what_triggers_the_explosions_of_atomic_and/ | {
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"When you get a large enough chunk of certain radioactive materials together, it explodes. In a bomb, two pieces of material, each too small to explode, are kept separate. A small conventional explosive ... | [] | [] | [
[],
[],
[]
] | |
282chx | what exactly is corrupt about the world cup? | I've heard a lot about the politics and funding of it but no in depth, detailed explanation. Also, is whats going on in Brazil at all related to Qatar? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/282chx/eli5_what_exactly_is_corrupt_about_the_world_cup/ | {
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4xxblo | how does mental or emotional stress manifest with different physical symptoms (i.e. pimples, nausea, panic attacks, etc.)? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4xxblo/eli5_how_does_mental_or_emotional_stress_manifest/ | {
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"https://strokefoundation.com.au/About-Stroke/Ty... | ||
2fz0as | what does peanut butter taste like? | Like, for real. I'm allergic. It's one of those things everyone takes for granted, and no one will tell me. Is it salty? Is it sour/sweet? Is it like jelly? What's the appeal of a PB & J? Is it like butter? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fz0as/eli5_what_does_peanut_butter_taste_like/ | {
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"text": [
"Have you ever had sesame oil? That's the closest thing I can compare it to.",
"I don't LOVE pb, so I can assess the flavor with no bias. Its a very rich flavor so you can't eat too much of it, I kno... | [] | [] | [
[],
[],
[
"http://www.soynutbutter.com"
]
] | |
bvru2p | how does your stomach know the difference between food/liquid - bowels/bladder? | How does your stomach decide that food goes one way and drinks go the other? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bvru2p/eli5_how_does_your_stomach_know_the_difference/ | {
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"text": [
"It doesn't. It all goes to your bowel, where nutrients and water are absorbed into your blood. Meanwhile, your kidneys are at work pulling water out of your blood and into your bladder (using the proce... | [] | [] | [
[],
[],
[]
] | |
d3zyng | why does plastics make so much noise when you wrap it even though it is so soft? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/d3zyng/eli5_why_does_plastics_make_so_much_noise_when/ | {
"a_id": [
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"score": [
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"text": [
"Plastic wrappers make noise when crumpled because of those creases and ridges you see on it. Unlike very elastic materials like rubber sheets, when you stretch a plastic sheet, the stress doesn't get distributed evenly. Tre... | [] | [] | [
[],
[]
] | ||
90ufdp | why is milk so popular for humans, even though among mammals, milk is only consumed when breastfeeding the young? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/90ufdp/eli5_why_is_milk_so_popular_for_humans_even/ | {
"a_id": [
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"score": [
15,
4
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"text": [
"There was a genetic mutation about 8,000 years ago that allowed humans to keep consuming milk into adulthood. It made the domestication of dairy cows possible, and made the populations who had the mutation a *lot* more sur... | [] | [] | [
[],
[]
] | ||
77ai4z | when stars create elements, are they going to be solid, liquid, or gas forms? | Like is there gold, lead, water, iron ,etc floating around space? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/77ai4z/eli5_when_stars_create_elements_are_they_going_to/ | {
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"text": [
"None of those, they will be plasma at the time of their formation. Depending on their eventual environment they may change into the other states.\n\n > Like is there gold, lead, water, iron ,etc floating around space?\n\nO... | [] | [] | [
[],
[]
] | |
e5spg6 | how do torpedoes work? | If I fired a rocket launcher underwater it wouldn’t go very far due to, well, water. But a torpedo sails through water. How do torpedoes work, and why do they work but above ground rocket launchers underwater don’t? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/e5spg6/eli5_how_do_torpedoes_work/ | {
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"text": [
"A torpedo is actually a little propeller-driver boat, or miniature submarine if you like. It's designed to go through water just like a boat or sub would, while rockets are design... | [] | [] | [
[],
[],
[],
[]
] | |
4ar72l | why is heating considered a necessity, but ac is a luxury? | People can die of heat stroke, so why is it totally acceptable to expect a person to tough it out without AC, but a building without a heating system would be considered unlivable?
Most schools have heat, but not AC. Low-income apartments never have AC but would be condemned if they didn't have heat. If your work plac... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4ar72l/eli5_why_is_heating_considered_a_necessity_but_ac/ | {
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b90cri | what is a "graphics engine" or "physics engine" in the context of video games, and how is it different from animation for motion pictures? | I saw a video for the new Unreal Engine and it didn't look like anything I hadn't seen in some animated movies before, so I'm trying to understand how it's different | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/b90cri/eli5_what_is_a_graphics_engine_or_physics_engine/ | {
"a_id": [
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"score": [
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"text": [
"A graphics engine is a piece of software, such in it runs on a computer, to produce visual output, meaning it displays stuff on screen.\nPhysics engines are software which make virtual object representations, for example car... | [] | [] | [
[],
[]
] | |
1md3iz | why haven't computer processors been able to grow their power the way other components have? | It seems like we've reached a threshold on CPU power; somewhere around 3.8Ghz. Why is that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1md3iz/eli5_why_havent_computer_processors_been_able_to/ | {
"a_id": [
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"text": [
"We've been increasing CPU power recently by increasing the number of processors or the number of cores, instead of just ramping up the clock speed. Additionally, we've reached CPU speeds that simply ar... | [] | [] | [
[],
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] | |
53uu4d | why do some people raise the volume of their voice when speaking on their cell phone? | I've noticed that, while riding the train, people who are engaged in normal-voice conversation, when receiving or making a call, sometimes speak very loudly into their cell phones.
I wonder if this is because of habits from bad cell phone quality in a user's past, or something else... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/53uu4d/eli5_why_do_some_people_raise_the_volume_of_their/ | {
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2
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"text": [
"Everybody is different and has their own past and experiences, but in my experience, most do it so the person on the other end of the call can hear them. I've... | [] | [] | [
[],
[],
[],
[],
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65t1vc | why do we sometimes forget things we just said within seconds? | For example,
My sister and I were talking about some sort of topic and she said something that really piqued my interest. Then I said, "That would make for a really good title for an article!" Then she asked, "What did I say?" We both couldn't remember what she had just said.
Edit: "peaked" - > "piqued" | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/65t1vc/eli5_why_do_we_sometimes_forget_things_we_just/ | {
"a_id": [
"dgd5fr6"
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"text": [
"The brain stores memory in two different ways, short term and long term. Short term memories are the ones your brain subconsciously deems as unimportant and forgets them a short while later. Long term memories a similar but are deemed important a... | [] | [] | [
[]
] | |
2srq1v | what's with the tactics used by drill instructors in boot-camps? | First off, let me start by saying I'm not criticizing the tactics in the slightest. I'm just curious.
What's with the tactics used in boot-camp? The insults? The demeaning, dehumanization, and humiliating? What are the drill sergeant's intentions? What are they looking for in the trainees?
Also, please don't say "to ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2srq1v/eli5_whats_with_the_tactics_used_by_drill/ | {
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"text": [
"It is very different than what you see on TV. It's not really \"demeaning, dehumanization, and humiliating\". Some insults do happen but they are generally ... | [] | [] | [
[],
[],
[],
[],
[]
] | |
31c68f | when sick with a cold or flu, is there any value in expelling phlegm / mucous rather than swallowing it. | I was encouraged to do this while growing up, but wonder if there is really any need, and after all, it seems like it (spitting especially) would only help in spreading the germs. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/31c68f/eli5when_sick_with_a_cold_or_flu_is_there_any/ | {
"a_id": [
"cq099wf",
"cq09c93"
],
"score": [
3,
2
],
"text": [
"when sick with the cold or flu, phlegm and mucous often contain sputum and/or dead white blood cells. your body produces this thicker mucous to contain the sputum and expel it form the body. \n\nwhen your white blood cells d... | [] | [] | [
[],
[]
] | |
4hfqr8 | how do electricity shortages work? | I was reading about [Venezuela](_URL_0_) earlier today, and I realised that I have absolutely no idea how an electricity shortage would happen.
Would the current be reduced over a whole grid, or are people simply cut off?
What would the difference be when comparing a third-world country to a first-world country? (Or ... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4hfqr8/eli5_how_do_electricity_shortages_work/ | {
"a_id": [
"d2pgbzj"
],
"score": [
2
],
"text": [
"The electric grid has to remain in balance, energy in = energy out. If you can't provide enough input to satisfy the demand then everyone gets less power than they want. What exactly happens after that is complicated but the ELI5 is nobody is h... | [] | [
"http://www.miamiherald.com/news/local/news-columns-blogs/andres-oppenheimer/article73657547.html"
] | [
[
"https://www.youtube.com/watch?v=slDAvewWfrA",
"https://en.wikipedia.org/wiki/Brownout_(electricity\\)"
]
] | |
9aj0cy | can the internet be shut down? why or why not? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9aj0cy/eli5_can_the_internet_be_shut_down_why_or_why_not/ | {
"a_id": [
"e4vrmqe",
"e4vsakp",
"e4vuwea"
],
"score": [
2,
2,
2
],
"text": [
"Absolutely. There are plenty of protections to stop it and deal with components going down but it is run by physical machines. Machines break. Machines need power to work. It also runs on code and c... | [] | [] | [
[],
[],
[]
] | ||
6rtk6c | when you have cold feet and put them in hot water, why do they have a "freezing" feeling for a while? what causes it and what is it's purpose? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6rtk6c/eli5_when_you_have_cold_feet_and_put_them_in_hot/ | {
"a_id": [
"dl83qn7"
],
"score": [
7
],
"text": [
"When you're cold, blood vessels around your body begin to contract to keep your more important organs functioning (this is why you can lose a limb from frostbite) When your feet warm up quickly, blood vessels rapidly expand causing a uncomfortabl... | [] | [] | [
[]
] | ||
7nw3iu | who is my second cousin once removed? what is he/she removed from? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7nw3iu/eli5_who_is_my_second_cousin_once_removed_what_is/ | {
"a_id": [
"ds4w5ao",
"ds4w5jq"
],
"score": [
2,
3
],
"text": [
"removed refers to the difference of one generation. so your second cousin once removed is your parent's 2nd cousin (your grandparent's cousin's child).",
"First cousin - you share a grandparent (but not a parent, of cour... | [] | [] | [
[],
[]
] |
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