q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
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27gbrg | why do (more) women not take birth control pills continually to never have periods? | As a man, it sort of blew my mind reading in the thread on the front page that 1/4 of the "birth control" pills that come in a packet are placebos. Birth control pills prevent menstruation while they are being taken. It is only because women don't take these pills for 1 week out of a month that menstruation occurs.
Ap... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/27gbrg/eli5_why_do_more_women_not_take_birth_control/ | {
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"It's actually a subject of debate whether taking oral contraceptive continuously has no medical consequences. The fact is that this is a fairly new idea, and there's no enough data to say what the long ... | [] | [
"http://www.optionsforsexualhealth.org/birth-control-pregnancy/birth-control-options/hormonal-methods/combined-hormonal-contraceptives/cont"
] | [
[
"http://www.webmd.com/women/features/no-more-periods"
],
[],
[]
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1x4x97 | When light is emitted from a source; do the photons start moving at the speed of light or do they accelerate up to it? | askscience | http://www.reddit.com/r/askscience/comments/1x4x97/when_light_is_emitted_from_a_source_do_the/ | {
"a_id": [
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"text": [
"Photons always move at the speed of light, from the instant they come into existence."
]
} | [] | [] | [
[]
] | ||
4hw3ii | Why aren't there pure ATP supplements available on the market as energy boosters? What would happen if you took these? | As ATP is often referred to as the energy currency of the cell, what would happen if one ingested ATP capsules? Would the person experience an energy boost, or would it prove to be toxic? | askscience | https://www.reddit.com/r/askscience/comments/4hw3ii/why_arent_there_pure_atp_supplements_available_on/ | {
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"Funnily enough, not a thing. The moment ATP hits the acidic environment of your stomach, it begins to hydrolyze into phosphate and adenosine (and probably further into adenine and ribose). In order t... | [] | [] | [
[],
[],
[]
] | |
8tdv9p | how do people who live in eastern asian countrys eat so much yet stay so healthy? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8tdv9p/eli5_how_do_people_who_live_in_eastern_asian/ | {
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"text": [
"By healthy I assume you mean lean with a low body fat percentage. It all comes down to the units of energy consumed versus the units of energy burned; some people burn more calorie... | [] | [] | [
[],
[],
[],
[]
] | ||
5h1ben | why aren't password special characters universally agreed on? | I'm not asking about the length or use of caps. I'm wonder about why isn't there a universally agreed upon standard of special characters (the !@#$ most make you use) that can be used by all password programs? Some allow a ! but not a ?, but another does the opposite. I just want to come up with one sweet and difficul... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5h1ben/eli5_why_arent_password_special_characters/ | {
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"text": [
"Because there is no standards group maintaining this. And because some special characters have special meaning in certain locations. It wouldn't matter if the person writing the password code knew what ... | [] | [] | [
[],
[],
[]
] | |
3xlvb5 | if the constitution protects against double jeopardy, how can trials go an appellate court? | If someone has already been convicted, how can they be tried for the same crime twice? Isn't this against the 5^th amendment? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3xlvb5/eli5_if_the_constitution_protects_against_double/ | {
"a_id": [
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"text": [
"In what way would it violate the rule? Keep in mind that the *defendant* is the one who asks for the appeal; without the appeal, he is guilty, and the appeal can't actually convict him (it's not a second trial). ",
"The ... | [] | [] | [
[],
[
"http://www.americanbar.org/groups/public_education/resources/law_related_education_network/how_courts_work/appeals.html"
]
] | |
90z982 | why is it so hard to get that old 'hand drawn' look in modern anime/cartoons using computer animation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/90z982/eli5_why_is_it_so_hard_to_get_that_old_hand_drawn/ | {
"a_id": [
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"score": [
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"text": [
"It's not done very often because animating something that high quality would take a really long time. It's possible, just insanely time consuming.",
"There's a lot of reasons why old hand drawn animation looks different... | [] | [] | [
[],
[]
] | ||
zhjnj | how american college applications work. | Basically I have to start applying for colleges and I have no idea what the fuck I'm doing. On the Chapman website, it says they have a school especially for film, Dodge, which has its own application specifications. If I want to minor in film but major in something else, do I have to apply to both Chapman and Dodge? A... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/zhjnj/eli5_how_american_college_applications_work/ | {
"a_id": [
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"text": [
"So, for a bit of clarification, mostly for the stuff below, a university is made up of colleges. a college of liberal arts a college of business, et cetera. \n\nyou only have to apply directly to college if you want to major... | [] | [] | [
[],
[]
] | |
5zj96q | How has the historiography of the First World War changed over time? | When I was learning about WWI in high school (mid-2000s) I was taught that the War was inevitable. Going off my history textbook, a global war was pretty much bound to happen due to things like the overlapping network of alliances, great power competition, and technological change.
Has this always been the narrative... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5zj96q/how_has_the_historiography_of_the_first_world_war/ | {
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"text": [
"In my experience, most of the revisions were made within the overall narrative of WWI that you've described, focusing instead on who exactly was to blame for the ultimate outbreak of the war. For most of the 20th century th... | [] | [] | [
[],
[]
] | |
1y3z91 | 16th century Church of England question? | Say if i walk into one of the churches and wait for an hour or so and then stood up and said the what the preacher was saying was a lie? would i be killed,thrown out, or would there be a whole different thing that situation? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1y3z91/16th_century_church_of_england_question/ | {
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"text": [
"It would depend entirely on why you were saying what *he* was saying was a lie. "
]
} | [] | [] | [
[]
] | |
fpjh33 | i have a cpap machine for sleep apnea. how similar / different is it from a medical ventilator? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fpjh33/eli5_i_have_a_cpap_machine_for_sleep_apnea_how/ | {
"a_id": [
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"text": [
"The CPAP machine is simply designed to keep a small positive airway pressure (hence the name) in order to keep the airway open. You still must breathe, it doesn't do it for you. A ventilator actually will breathe for the person, so it will put ... | [] | [] | [
[]
] | ||
4regmv | what makes popular music recordings you hear on the radio sound so "good"? | Compared to home recording or local recording studios, what makes recordings bands like Maroon 5 sound "better" than other bands? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4regmv/eli5what_makes_popular_music_recordings_you_hear/ | {
"a_id": [
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"score": [
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"text": [
"Professional mixing and mastering engineers.\n\nBasically, for bands as large as Maroon 5, you have multiple professionals mixing the song to get it to sound as clean, clear and crisp as possible. The better the mix engineer, the better the song ... | [] | [] | [
[]
] | |
a3bnsd | how come no one has prosecuted the president yet? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a3bnsd/eli5_how_come_no_one_has_prosecuted_the_president/ | {
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"text": [
"If your gonna take a shot at the king, you better not miss. Any prosecutor worth their salt is gonna make sure all of their ducks are in a row before bringing anything forward, and with something as big as impeachment there are a lot of ducks. F... | [] | [] | [
[]
] | ||
6s3g83 | why isn't drug testing mandatory for politicians? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6s3g83/eli5_why_isnt_drug_testing_mandatory_for/ | {
"a_id": [
"dl9rlx4"
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"text": [
"Politicians are the ones that would put these new laws in place. Also, some govern places where certain drugs are now legal. They also don't operate heavy machinery or have a direct impact on public safety. "
]
} | [] | [] | [
[]
] | ||
3d7oig | Marquis de Lafayette's uniform | I'm trying to find if anyone knows what Lafayette's epaulets looked like. I'm doing a sculpt of him based off a Houdon and I cant seem to make out what it was. It kind of looks like a french revolution cockade. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3d7oig/marquis_de_lafayettes_uniform/ | {
"a_id": [
"ct2tqpl"
],
"score": [
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"text": [
"There are very few surviving epaulettes from the Revolutionary War, otherwise I'd send you towards an image of an original. Instead [here is a link](_URL_1_) to trusted reproduction site, you'll want to look specifically at the cockade epaulette.... | [] | [] | [
[
"https://commons.wikimedia.org/wiki/File:Marquis_de_Lafayette_2.jpg",
"http://www.najecki.com/repro/OffNCO.html"
]
] | |
mbxcy | Is hemp really a miraculous plant that could replace dozens of products at a cheaper cost? | askscience | http://www.reddit.com/r/askscience/comments/mbxcy/is_hemp_really_a_miraculous_plant_that_could/ | {
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"http://en.wikipedia.org/wiki/Hemp"
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tpu65 | Is color an intrinsic property, or is it just the way we process different wave lengths? And could other species "see" totally different colors? | I've been wondering about this for some time now. Different colors are caused by different wave lengths of light. However It seems nothing in the property of the wave itself "carries" a specific color. So I reasoned, we only see a specific color, because we evolved to see that specific color. I.e. yellow is yellow to u... | askscience | http://www.reddit.com/r/askscience/comments/tpu65/is_color_an_intrinsic_property_or_is_it_just_the/ | {
"a_id": [
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"text": [
"Color is actually a complex combination of light wave lengths and perception. The human eye (typically) has three types of cones which are sensitive to different light wave lengths. Adding those wave lengths up gives us ou... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Mantis_shrimp"
],
[]
] | |
uyq7w | A question about old-fashioned TV antennas | I don't even know how to put this.
In the old days, when we had "rabbit ear" style antennas on top of TV sets, it seems there was always one person in the house who affected the TV reception when nobody else did. That one person could make the TV signal go all static just by moving around. Sometimes happened on radio ... | askscience | http://www.reddit.com/r/askscience/comments/uyq7w/a_question_about_oldfashioned_tv_antennas/ | {
"a_id": [
"c4zrcth"
],
"score": [
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"text": [
"Some people step really heavily. This could affect things.\n\nBesides that, probably just observer bias."
]
} | [] | [] | [
[]
] | |
s4xvg | Why don't scientists use natural units more often? | Why don't we normalize certain fundamental physical constants like the speed of light, the gravitational constant, charge of an electron, etc. to values that are easier to work with. It seems foolish to have an electron's charge be -1.6 x 10^-19 C when we could create a new unit and set it equal to 1. The same goes f... | askscience | http://www.reddit.com/r/askscience/comments/s4xvg/why_dont_scientists_use_natural_units_more_often/ | {
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],
"text": [
"By eliminating the need for various 'constants' you have just replaced the issue with various different units, haven't you? I'm not sure I follow completely.",
"I use units tha... | [] | [] | [
[],
[],
[
"http://en.wikipedia.org/wiki/Electron_volt",
"http://en.wikipedia.org/wiki/Astronomical_unit",
"http://en.wikipedia.org/wiki/Atomic_units"
],
[]
] | |
1k428c | if it takes so many processors to simulate one second of human neural activity, why are processors so much more accurate and faster than brains? | I read an article recently (if anyone could provide a link, that would be appreciated) that said that it took lots of processors (I forget the number, but it was a lot) and about 40 minutes to recreate one second of the brain working. What I don't understand is how I can perform long calculations, perform thousands of ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1k428c/if_it_takes_so_many_processors_to_simulate_one/ | {
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"text": [
"Short answer: because human brains are doing things WAY more complex that are also much more important, evolutionarily speaking. Math equations beyond \"two lions means twice the... | [] | [] | [
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Neuron",
"http://www.reddit.com/r/explainlikeimfive/comments/1k428c/if_it_takes_so_many_processors_to_simulate_one/cbletuq"
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7279r1 | if alcohol has been proven to cause cancer and other diseases, why aren't bottles covered in warning labels like cigarettes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7279r1/eli5_if_alcohol_has_been_proven_to_cause_cancer/ | {
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"text": [
"Ahoy, matey! Yer not alone in askin', and kind strangers have explained:\n\n1. [ELI5: Why are there health warning labels on cigarettes and not McDonalds, soft-drinks, processed meat, or on the side of Supercars and Bikes? ]... | [] | [] | [
[
"https://www.reddit.com/r/NoStupidQuestions/comments/6bc9g8/why_is_alcohol_not_illegal_because_of_how_much/",
"https://www.reddit.com/r/explainlikeimfive/comments/3q7epx/eli5_why_are_there_health_warning_labels_on/",
"https://www.reddit.com/r/explainlikeimfive/comments/2w8xf9/eli5_why_are_tobacco_prod... | ||
o5155 | Is it possible to make a laser that releases X-rays or gamma rays? | We've had lasers and Masers for decades now it is possible to make a coherent beam of x-ray or gamma radiation or for that matter very low frequency radio waves?
Would you be able to trigger a subcritical mass of radiactive material this way? Or perhaps use it in x-ray imaging to reduce scatter? Couldn't you use it ... | askscience | http://www.reddit.com/r/askscience/comments/o5155/is_it_possible_to_make_a_laser_that_releases/ | {
"a_id": [
"c3eevor"
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"text": [
"It doesn't work by the same principles as other lasers, but [free electron lasers](_URL_0_) can produce virtually any wavelength of coherent photons.\n\nEdit: it's also possible to use a regular laser and [backscatter the photons off a high ener... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Free-electron_laser",
"http://prl.aps.org/abstract/PRL/v90/i5/e055002"
]
] | |
1f8ruf | How and why did the North-American states unite into the United States? | I was reading some political discussions in comments to this article; _URL_0_
and a lot of people seemed to think that the size of the US makes it tough to come up with any social security/medicare system that would 'stick' and function properly, like they have to some extent in Denmark.
So, what's against splitting u... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1f8ruf/how_and_why_did_the_northamerican_states_unite/ | {
"a_id": [
"ca7w4rj"
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"score": [
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],
"text": [
"Originally that is how the United States was created. A loosely related country of sovereign states. Each state printed it's own money, had it's own laws, provided for the welfare of their citizens, had it's own army. Basically the Articles of Co... | [] | [
"http://www.huffingtonpost.com/rep-bernie-sanders/what-can-we-learn-from-de_b_3339736.html"
] | [
[]
] | |
nb262 | Does earth appear bigger on the horizon than over head when astronauts see it from the moon?
| Did they see the same effect as we see the moon from earth?
| askscience | http://www.reddit.com/r/askscience/comments/nb262/does_earth_appear_bigger_on_the_horizon_than_over/ | {
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"text": [
"Well, the Earth doesn't set if you're standing still on the moon because the moon is tidally locked with the Earth. But that aside, were you to walk so far that you make the Earth ... | [] | [] | [
[
"http://www.badastronomy.com/bad/misc/moonbig.html"
],
[],
[
"http://www.badastronomy.com/bad/misc/moonbig.html"
],
[]
] | |
psstc | Questions about nose picking and other socially unacceptable habits | Is there a reason we do them even though they're socially unacceptable?
Are there any inherent risks or health benefits to habits like nose picking?
In a general sense, how do habits like these form, and how can they be unlearned? | askscience | http://www.reddit.com/r/askscience/comments/psstc/questions_about_nose_picking_and_other_socially/ | {
"a_id": [
"c3ryope"
],
"score": [
2
],
"text": [
"Risks: Small but real risk of infection, which in turn [can spread to the brain.](_URL_0_)\n\n > Nose picking (rhinotillexomania) can lead to infections in the nose, which is situated very close to the brain. They share the same blood supply. Get... | [] | [] | [
[
"http://www.skinpick.com/nose-picking-rhinotillexomania"
]
] | |
lhcbs | how the nes zapper gun (like the one used in duck hunt) knew where you were pointing on the screen. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/lhcbs/eli5_how_the_nes_zapper_gun_like_the_one_used_in/ | {
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"score": [
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"text": [
"The Zapper doesn't actually \"shoot\" out light. Instead, it's the reverse: it's a light sensor. When you pull the trigger, the screen turns black and the targets (ducks, discs, ... | [] | [] | [
[],
[
"http://www.clanofthegraywolf.com/way-games-work/nes-zapper"
],
[],
[
"http://www.clanofthegraywolf.com/way-games-work/nes-zapper"
]
] | ||
12k486 | why does usa elect their president based on who gets the most electoral votes and not by popular vote? | It is to my knowledge that in 2000, 48.4% of every American who voted wanted Al Gore as president, yet George W. Bush who had 47.9% won. Why is that? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/12k486/eli5_why_does_usa_elect_their_president_based_on/ | {
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"score": [
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"text": [
"Cause the people who wrote the constitution realized that Americans could not be trusted to vote.\n\nTherefore the electoral colleges w... | [] | [] | [
[],
[
"http://www.youtube.com/watch?v=7wC42HgLA4k",
"http://www.youtube.com/watch?v=OUS9mM8Xbbw"
],
[],
[],
[],
[]
] | |
2bt3p4 | why is it that some people absorb information easily while others can't? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2bt3p4/eli5_why_is_it_that_some_people_absorb/ | {
"a_id": [
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"score": [
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2
],
"text": [
"It is training. Also - we absorb different kinds of information differently. For example I usually have no problem picking up new math/logic concepts, but I can't keep up with history, and can only understand music from a ma... | [] | [] | [
[],
[]
] | ||
3f2jm1 | With the sea levels rising, what's happening with mountain heights? | They are measured in an above sea level scale, right? Does that mean that the mountains will never be as high as they are today? Will the mountain height charts be changed? | askscience | http://www.reddit.com/r/askscience/comments/3f2jm1/with_the_sea_levels_rising_whats_happening_with/ | {
"a_id": [
"ctlonmv"
],
"score": [
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"text": [
"In a simple sense, yes, elevations are referenced to sea level, but in reality, things are much more complicated. Obviously sea level change (i.e. rising sea level) presents a problem for defining \"sea level\", but it was a problem well before t... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Geoid",
"http://www.esri.com/news/arcuser/0703/geoid1of3.html",
"https://en.wikipedia.org/wiki/EGM96",
"https://en.wikipedia.org/wiki/Sea_level",
"https://en.wikipedia.org/wiki/World_Geodetic_System"
]
] | |
46xidt | georgia's "religious freedom" bill | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/46xidt/eli5_georgias_religious_freedom_bill/ | {
"a_id": [
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"text": [
"When it passed through the House the main 3 points were as follows\n\n-- It cleared ministers from having to perform marriages that violated their religious beliefs; (meaning a minister that refuses to perform a LBGT marriage cannot be sued for d... | [] | [] | [
[]
] | ||
3ol1fy | Tuesday Trivia | Adventures in the Archives | [Previous weeks' Tuesday Trivias and the complete upcoming schedule.](_URL_0_)
It’s the most wonderful time of the year! It's October of course, the most crowded of commemorative months! And Native American History Month, British Black History Month, American LGBT History Month, and of course Vegetarian Awareness Mon... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3ol1fy/tuesday_trivia_adventures_in_the_archives/ | {
"a_id": [
"cvy64wq",
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"text": [
"I've got a good one, a few years back I interned at a local archive in order to beef up my ... | [] | [
"http://www.reddit.com/r/AskHistorians/wiki/features/trivia",
"http://archivists.org/initiatives/american-archives-month/american-archives-month-2015"
] | [
[
"http://i.imgur.com/hx7vqOJ.jpg",
"http://imgur.com/hviUpqZ",
"http://imgur.com/zwfuF8l",
"http://www.darcosc.com/Historical_Commission_Building.jpg",
"http://imgur.com/SyoFRCN"
],
[
"http://catalogue.nla.gov.au/Record/292291"
],
[],
[],
[],
[
"http://jonestown.sdsu.edu"
... | |
c9vsg6 | why is it preferable for an airplane to have the propeller pulling at the front, instead of pushing from the back? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c9vsg6/eli5why_is_it_preferable_for_an_airplane_to_have/ | {
"a_id": [
"et3ejjt",
"et3ht21",
"et4gmvm"
],
"score": [
2,
20,
2
],
"text": [
"They airflow from the propeller at the front creates more lift as it transfer across the fuselage. It also helps the vertical stabilizer.",
"Generally propeller placement actually comes down to eng... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/Convair_B-36_Peacemaker",
"https://en.wikipedia.org/wiki/SAAB_21"
],
[]
] | ||
3v1li4 | Why did Japan join the Axis during World War II | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3v1li4/why_did_japan_join_the_axis_during_world_war_ii/ | {
"a_id": [
"cxjjka0"
],
"score": [
3
],
"text": [
"Hi, I discuss the details of Japan's joining of the Axis alliance [here](_URL_0_)."
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3lgah1/in_ww2_why_did_germany_ally_with_japan_instead_of/cv64yn6"
]
] | ||
3qm48s | nitrogen fixation | I've read a lot about it but my teacher did a crappy job of talking about it in class, anyone have any help? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3qm48s/eli5_nitrogen_fixation/ | {
"a_id": [
"cwgd4wm",
"cwghcxc"
],
"score": [
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],
"text": [
"Basically, nitrogen is really, **really** important for living organisms. Unfortunately, most of the nitrogen on Earth is in the atmosphere in the form of N2 and most creatures lack the tools to break it apart and make use o... | [] | [] | [
[],
[]
] | |
16hj0z | What does it mean when we say there may be more dimensions but they are too 'small' or 'curled up' for us to see? | I just can't get my mind around what these terms mean. What does 'small' or 'curled' mean for other dimensions beyond the three we're used to? How can a dimension be bigger/smaller/shaped different than others? Isn't it like saying the dimension of 'depth' is smaller than 'length'? What would having 'depth' be small (b... | askscience | http://www.reddit.com/r/askscience/comments/16hj0z/what_does_it_mean_when_we_say_there_may_be_more/ | {
"a_id": [
"c7w3bek",
"c7w4094",
"c7w49fz",
"c7w5pj3"
],
"score": [
10,
3,
3,
4
],
"text": [
"Imagine an infinitely long cylinder. If we contract the radius to a very small distance, then it would appear, to a macroscopic observer, that this was a one dimensional line. B... | [] | [] | [
[],
[
"http://youtube.com/watch?v=YtdE662eY_M"
],
[],
[]
] | |
3chhdg | why do some plants have red leaves instead of green? do they get less energy from sunlight? | Here are some examples.
_URL_0_ | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3chhdg/eli5_why_do_some_plants_have_red_leaves_instead/ | {
"a_id": [
"csvks8m"
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"score": [
2
],
"text": [
"The colour green comes from a molecule called chlorophyll in plant cells. I believe chlorophyll can come in different types, that capture different wavelengths of sunlight. In most plants, all wavelengths except for green are absorbed, so green i... | [] | [
"https://www.google.com/search?q=plants+with+red+leaves&client=ms-android-uscellular-us&espv=1&source=lnms&tbm=isch&sboxchip=Images&sa=X&ei=T1ucVYrfNoyq-AHJnb74Aw&ved=0CAYQ_AUoAQ&biw=360&bih=559"
] | [
[]
] | |
2q9ito | what *is* the space that gets taken up when i add "data" to my hard drive, phone, memory card, ect., and how exactly does it work? | I really don't know how to properly explain, but when I add, say, music to my phone, what exactly happens that limits the phones capacity? The phone doesn't gain any weight, and nothing actually goes inside it. There is no physical "empty space" inside of a storage device, correct? What is causing the phone to just "no... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2q9ito/eli5_what_is_the_space_that_gets_taken_up_when_i/ | {
"a_id": [
"cn435wa",
"cn436ok"
],
"score": [
14,
65
],
"text": [
"Data is stored by a specific arrangement of the physical components of the drive. For example, in a standard HDD, the data is stored as the directions of magnetic fields on billions of different locations on a coated meta... | [] | [] | [
[],
[]
] | |
33t899 | what causes rivers to suddenly be rapid in certain areas? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33t899/eli5_what_causes_rivers_to_suddenly_be_rapid_in/ | {
"a_id": [
"cqo5q7j",
"cqo6o1f"
],
"score": [
3,
3
],
"text": [
"The speed of a river is determined by a lot of factors - the steepness of the ground it's flowing down, how deep the water is, and how wide, mostly. If those change suddenly, the speed of the river can change suddenly too.",... | [] | [] | [
[],
[]
] | ||
l7qm6 | What's the point of SATA 6 GB/sec? | Most drives can't even get 1 GB/sec read/write performance. When we can't even use all of the 3 GB/sec that has been the standard SATA connection, what's the point of having 6 GB/sec SATA connections?
Thanks | askscience | http://www.reddit.com/r/askscience/comments/l7qm6/whats_the_point_of_sata_6_gbsec/ | {
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"c2qpipe"
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"score": [
2,
4,
2,
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],
"text": [
"Prolly belongs elsewhere, but the point of having that is that it probably costs very little extra to include(or may even be cheaper, depending on if anyone even bothers making the... | [] | [] | [
[],
[],
[],
[]
] | |
4e47f3 | how is it profitable for wineries to sell their wine cheaply enough to an import/export company that i can get it on another continent for $5.70/bottle? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4e47f3/eli5_how_is_it_profitable_for_wineries_to_sell/ | {
"a_id": [
"d1x3mgd"
],
"score": [
2
],
"text": [
"There is a world wide surplus of basic grade grape wine juice. Australia, Chile, Argentina, US all produce commodity grade grape wine juice.. Perhaps you've heard of [Charles Shaw](_URL_0_), aka Two Buck Chuck. A few years ago it was about $2 at ... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Charles_Shaw_wine"
]
] | ||
aanq1o | what spurred the usage of 'xmas' in place of 'christmas'? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/aanq1o/eli5_what_spurred_the_usage_of_xmas_in_place_of/ | {
"a_id": [
"ectfnov",
"ecthy1o"
],
"score": [
8,
3
],
"text": [
"\"X\" is the Greek Letter Chi, which is the first letter of \"Christ\" when written in Greek. The X is just an abbreviation, and was used for many years by Christians as a secret code that only others would know to show they... | [] | [] | [
[],
[
"http://www.reddit.com/r/explainlikeimfive/wiki/how_to_search",
"http://www.reddit.com/message/compose?to=%2Fr%2Fexplainlikeimfive&subject=Can%20you%20review%20my%20thread",
"https://www.reddit.com/r/explainlikeimfive/wiki/detailed_rules"
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2nxyc5 | how do vegetables get vitamins and minerals if they only "eat" water and sunlight? | Where does it all come from? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2nxyc5/eli5_how_do_vegetables_get_vitamins_and_minerals/ | {
"a_id": [
"cmhwec8",
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"score": [
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2,
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"text": [
"They also take in nutrients from the dirt. That's how you can get things like iron etc. ",
"In order to make sugars, a plant needs certain elements in its diet. It gets Carbon from the Carbon Dioxid... | [] | [] | [
[],
[],
[]
] | |
6ql1zc | what gives fire its shape? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6ql1zc/eli5_what_gives_fire_its_shape/ | {
"a_id": [
"dky2ge0"
],
"score": [
16
],
"text": [
"When air is heated, it tends to expand.\n\nTo explain why it expands - Heat is basically the measure of vibration and movement of the actual molecules within a substance. When something is solid, these vibrations don't have enough energy to stop... | [] | [] | [
[]
] | ||
fh6hi | What could be the drawbacks of immortality? | I can't find the article. But about a year or two ago, I remember reading something on reddit about scientists "discovering" the fountain of youth... that it is possible for humans to live for hundreds or even thousands of years. When this happens, what do you think will happen to us? | askscience | http://www.reddit.com/r/askscience/comments/fh6hi/what_could_be_the_drawbacks_of_immortality/ | {
"a_id": [
"c1fwxuv",
"c1fwzd7",
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"score": [
3,
3,
6,
3,
2,
7,
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"text": [
"Read a book called \"The Boat of a Million Years\" by Poul Anderson.",... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[],
[]
] | |
1d651z | how do free softwares like vlc player make any money? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1d651z/eli5_how_do_free_softwares_like_vlc_player_make/ | {
"a_id": [
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"c9nazds",
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"c9nbncq"
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"score": [
72,
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"text": [
"Broadly speaking, they don't, but that's okay because they aren't trying to. VLC is \"community-developed\" software; it's just a bunch of people who got together to write a vide... | [] | [] | [
[],
[],
[],
[]
] | ||
85olxj | how do air brakes work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/85olxj/eli5_how_do_air_brakes_work/ | {
"a_id": [
"dvyywvy",
"dvyz7bz",
"dvyzm3e"
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"score": [
2,
8,
2
],
"text": [
"The air is applied to a large gasket that pushes on an acutator rod. That in turn pushes a lever attached to a rod that goes into the brake drum, the rod has a double ended cam shaped like an S that fo... | [] | [] | [
[],
[],
[]
] | ||
2av1ki | how does 'immigration reform" aka legalizing 11 million people and allowing for more foreign workers help create more jobs? | Bills Gates is laying off thousands of American workers yet at the same time says that we need to bring in more foreign workers. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2av1ki/eli5_how_does_immigration_reform_aka_legalizing/ | {
"a_id": [
"ciz1am4",
"ciz1gih",
"ciz740g"
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"score": [
4,
4,
3
],
"text": [
"As far as I know, it doesn't. The only thing it will do is further depress wages. Simple supply and demand. \n",
"Im not sure how it creates more jobs but it should create more revenue. Undocum... | [] | [] | [
[],
[],
[]
] | |
8z90gy | How do Galaxies Accelerate? | I apologize if this is not flaired properly.
I was having a discussion with someone about the speeds that galaxies accelerate at. He was saying that in order to calculate the velocity of a galaxy, it would be as easy as using distance over time.
I fervently disagreed. I said that at the order of magnitude of a ga... | askscience | https://www.reddit.com/r/askscience/comments/8z90gy/how_do_galaxies_accelerate/ | {
"a_id": [
"e2h34xo"
],
"score": [
8
],
"text": [
"You don't need to worry about time dilation too much - the gravity fields and velocities are almost always weak enough and slow enough that it doesn't make much difference.\n\nYou do need to worry about the expansion of spacetime if you're workin... | [] | [] | [
[]
] | |
xisdd | what causes the static screen when you go to a nonexistent channel on your tv. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/xisdd/eli5_what_causes_the_static_screen_when_you_go_to/ | {
"a_id": [
"c5mpksx"
],
"score": [
5
],
"text": [
"It's just noise in the electronics.\n\nIn old televisions, where you were capturing things with an antenna and adjusting with a dial, a small portion of the static at night was caused by the cosmic microwave background radiation.\n\nNumerous othe... | [] | [] | [
[]
] | ||
523jfq | how do returns work at retail stores? what does the store do with broken returns? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/523jfq/eli5_how_do_returns_work_at_retail_stores_what/ | {
"a_id": [
"d7h0858"
],
"score": [
3
],
"text": [
"I used to work at Best Buy. When we get a return, it goes into something called functionality check where someone checks the device for accessories or any damage/defects. If it's good, they mark it \"open box\" at a discount. If it's broken, they... | [] | [] | [
[]
] | ||
2svgs6 | How do computers calculate limits, derivatives, and integrals? | Would it make sense to implement our human tricks (power rule, chain rule) into an algorithm, or is it always done through brute force? | askscience | http://www.reddit.com/r/askscience/comments/2svgs6/how_do_computers_calculate_limits_derivatives_and/ | {
"a_id": [
"cnuolw5"
],
"score": [
5
],
"text": [
"tl;dr: not really. CAS's sometimes use them, but that's not really what you're asking I think.\n\nThere are two types of systems you could be dealing with here. \n\nFirst, using numerical methods on a computer to take a definite integral, deriva... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Numerical_differentiation",
"http://en.wikipedia.org/wiki/Computer_algebra_system",
"http://en.wikipedia.org/wiki/Simpson's_rule"
]
] | |
1lui69 | Did the Soviets create any movies about the horrifying prospect of nuclear war between themselves and the USA? | i.e. is there a Soviet 'equivalent' of Dr. Stangelove, Failsafe, etc. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1lui69/did_the_soviets_create_any_movies_about_the/ | {
"a_id": [
"cc2w081"
],
"score": [
10
],
"text": [
"[\"Dead Man's Letters,\"](_URL_0_), from 1986, seems to fit the bill. "
]
} | [] | [] | [
[
"http://en.wikipedia.org/wiki/Dead_Man%27s_Letters"
]
] | |
ngrka | Can honey be used as an antibiotic? I've read a few articles claiming that it has the ability to help psoriasis, various skin conditions, cuts, insect bites, etc. I'm looking for some hard evidence, as the articles I'm finding on the net seem to be biased. | askscience | http://www.reddit.com/r/askscience/comments/ngrka/can_honey_be_used_as_an_antibiotic_ive_read_a_few/ | {
"a_id": [
"c3908wx",
"c3908wx"
],
"score": [
2,
2
],
"text": [
"While honey has some compounds in it with antibiotic properties, they aren't at a high enough concentration to really do anything for you at the level you would need if you were trying to treat an infection. Part of why we ... | [] | [] | [
[],
[]
] | ||
dn3swo | how do podcasts make any money on advertising when their ads are just commercials for other podcasts? | I listen to a few podcasts from the iHeartRadio network and HowStuffWorks network. During ad breaks, most of the time it's just an ad for another podcast. Does the parent company just find these podcasts to bring up the amount of listeners and then eventually put ads for products and services? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dn3swo/eli5_how_do_podcasts_make_any_money_on/ | {
"a_id": [
"f57ri9q",
"f588olf",
"f597vfz",
"f59f1k1"
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"score": [
3,
3,
2,
2
],
"text": [
"They also advertise other things that cost money, like Audible books, mattresses, website hosting/design, etc.",
"Casper, Hello Fresh, Blue Apron, _URL_0_, Audible... just to n... | [] | [] | [
[],
[
"Stamps.com"
],
[],
[]
] | |
ecjj6i | with the release of last christmas in 4k, how are old music videos that are so low in resolution remastered in 4k? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ecjj6i/eli5_with_the_release_of_last_christmas_in_4k_how/ | {
"a_id": [
"fbbtdwy"
],
"score": [
7
],
"text": [
"The original was shot in very high quality to physical film (35mm probably) and then was compressed for the media standards and capabilities of the day.\n\nThey just get the original footage and compress to 4k instead of whatever the first releas... | [] | [] | [
[]
] | ||
6g1ufa | the difference between architects and engineers in the design of a project, and how they work together | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6g1ufa/eli5_the_difference_between_architects_and/ | {
"a_id": [
"dimrpc7",
"dimsvme",
"din9359",
"dinfvko"
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"score": [
6,
5,
3,
2
],
"text": [
"In as simple terms as possible, the architect comes up with the design of the building/area/whatever itself, and engineers figure out how to make the design work as closely to what... | [] | [] | [
[],
[],
[],
[]
] | ||
er94rz | Was Child Rape/Pedophilia Legal During the time of American slavery? | While I do know that rape of african/black slaves was common during those times I’m having an extremely hard time grasping how the rape of children could have been something people acknowledged and accepted as a part of American life?
I know there are cases of young girls and women being raped as children by slave mas... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/er94rz/was_child_rapepedophilia_legal_during_the_time_of/ | {
"a_id": [
"ff32vog"
],
"score": [
11
],
"text": [
"I don't focus on sexual abuse of children in [this older answer](_URL_0_) but do touch on the issue in the follow-ups. *Obvious* content warning if you click through, or read further, as this is all about sexual assault and violence.\n\nTo reite... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/aku0d2/im_the_wife_of_a_slaveowner_in_the_southern_us_in/ef833ux/"
]
] | |
4y6iik | How do nerves interpret the movement of molecules as heat? | I understand how objective measurements of temperature work (thermometers, for example), but when it comes to subjectively feeling "hot" or "cold", knowing that the feeling is caused only by molecular speed blows my mind. | askscience | https://www.reddit.com/r/askscience/comments/4y6iik/how_do_nerves_interpret_the_movement_of_molecules/ | {
"a_id": [
"d6lnilj"
],
"score": [
19
],
"text": [
"Your cells have ion channels whose permeability to certain ions is influenced by temperature. By changing the permeability of the channels you change the electrochemical gradient of the cell which can easily be translated into an action potentia... | [] | [] | [
[]
] | |
5uovu0 | why did competing video stores not have any issues getting all new films, yet competing online services seem to have to fight over content? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5uovu0/eli5_why_did_competing_video_stores_not_have_any/ | {
"a_id": [
"ddvpdze",
"ddvur8f"
],
"score": [
97,
3
],
"text": [
"[First sale doctrine](_URL_0_), which was court ruling that stated that once you purchased something you could do with it as you pleased. If a video was available for sale, any video store was free to purchase it and rent i... | [] | [] | [
[
"https://en.wikipedia.org/wiki/First-sale_doctrine"
],
[]
] | ||
4fg9rz | if food contains so much energy in the kilocalorie scale, why can't we use that energy to power our homes? | We can see the nutritional value of foods sold always provide lots of energy often in the kilocalorie scale (food calorie) and if you convert that to energy values like: joules and watts, it's quite a lot!
The energy one person should eat in a day according to the officials is quite a lot. 2,000 kilocalories as said i... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4fg9rz/eli5_if_food_contains_so_much_energy_in_the/ | {
"a_id": [
"d28l1ti",
"d28l3x0",
"d28l52l"
],
"score": [
5,
3,
2
],
"text": [
"We do, its called diesel fuel. They have similar energy densities, and this is why petroleum is the most common form of transportation fuel. For stationary power plans coal is more common, but it is pre... | [] | [] | [
[],
[],
[]
] | |
wbmk8 | Before the modern era where did people go to report crimes? Who were their 'police' basically? | It's not a specific question because I want answers for every culture and society!
Like, in fantasy novels, there's always a city-watch that functions like a modern police force - did those exist?
Let's say I wanted to report a theft (with no suspect in mind) - did I go to the city guard/watch, or to a local magistra... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/wbmk8/before_the_modern_era_where_did_people_go_to/ | {
"a_id": [
"c5bz19t",
"c5bzy8w",
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"c5c0jkr",
"c5c9cpc",
"c5ccflk"
],
"score": [
49,
25,
66,
33,
5,
2
],
"text": [
"Let's say you are living in Tang-dynasty China. Someone steals something from you. The person you go to is the local magistrate - wh... | [] | [] | [
[],
[
"http://www.e-budokai.com/books/taiho.htm"
],
[],
[],
[
"http://libro.uca.edu/vcode/visigoths.htm"
],
[]
] | |
1ouu48 | the bank crisis 1837 | Can someone explain to me the causes and lasting effects of it? I kinda understand that inflation went way up, but all the websites I look at use complicated terms that I'm unfamiliar with. Thanks | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ouu48/eli5_the_bank_crisis_1837/ | {
"a_id": [
"ccvzdod"
],
"score": [
2
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"text": [
"Cause:\n\nLocal banks receive federal bank money and loan too much paper money (not gold or silver) out.\n\nDetails:\n\nJackson hated the national bank and decided not to recharter its bill in 1832. This was the start of the BANK WAR. Jackson bel... | [] | [] | [
[]
] | |
dvrxuz | how does turning down the temperature while away from home actually save energy? | It seems to me that maintaining an internal temperature would require less energy than letting the house cool and then having to crank the furnace on high for an hour or more to raise the temperature back up to a comfortable level, assuming the external temperature is much colder than the internal temperature.
Follow... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/dvrxuz/eli5_how_does_turning_down_the_temperature_while/ | {
"a_id": [
"f7ebiua",
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28,
2,
2,
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"text": [
"Heating the house back up is something of a fallacy. What you are doing is replacing heat lost to the outside. Think of it as a \"black box\". The only input... | [] | [] | [
[],
[],
[],
[],
[]
] | |
5un4u1 | why don't we treat addictions by putting the addicted people into medically induced coma for a long time? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5un4u1/eli5_why_dont_we_treat_addictions_by_putting_the/ | {
"a_id": [
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"text": [
"This wouldn't address the behavioral factors that brought people to their addictions.",
"I like to think half of it is a change of lifestyle.\n\nYou can g... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
6mrg3q | shouldn't many more of us have bed bugs? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6mrg3q/eli5shouldnt_many_more_of_us_have_bed_bugs/ | {
"a_id": [
"dk3sdzw",
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"score": [
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"text": [
"Oh they are a real problem. \n\nBut they don't get around too well by riding on people. \n\nThey aren't like fleas, who are highly mobile. Bed bugs are slow and don't jump. So if you sit on a couch with bed bugs, you might ... | [] | [] | [
[],
[
"http://www.slate.com/content/dam/slate/articles/health_and_science/Science/2011/10/111005_SCI_bedBugChart.jpg"
]
] | ||
1yhvk5 | Why are Norway and Sweden not united today? | I know vaguely that Norway and Sweden were united once, though I don't know when they were and when/why this ended. What caused Norway and Sweden to split and when, and why have they remained split?
As far as the other countries of Scandinavia, has there ever been any movement for a sort of "Scandinavian Union"? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1yhvk5/why_are_norway_and_sweden_not_united_today/ | {
"a_id": [
"cfkqkfk",
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"score": [
20,
3
],
"text": [
"The economic (and hence geopolitical) interests of the two countries were, and are, quite different; they are separated by a mountain range that makes it difficult to get much overland trade going. Sweden looks east across ... | [] | [] | [
[
"http://www.reddit.com/r/ekrona"
],
[
"http://www.norden.org/en/about-nordic-co-operation/agreements/treaties-and-agreements/basic-agreement/the-helsinki-treaty"
]
] | |
3n7ys8 | How are metal welds so strong? | I have a hard time fathoming why things don't break at the welds more often. When I think of welding I think of super glue holding things together. And for glue, the glued portion is the weak point. | askscience | https://www.reddit.com/r/askscience/comments/3n7ys8/how_are_metal_welds_so_strong/ | {
"a_id": [
"cvlvyjy",
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"score": [
7,
5
],
"text": [
"Because the weld isn't an adhesive. You can think of it like taking two pieces of paper and then instead of making them stick together, you melt the atoms in each paper down and then press them together, then when it cools d... | [] | [] | [
[],
[]
] | |
500zby | what is the difference between decibel and sone? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/500zby/eli5what_is_the_difference_between_decibel_and/ | {
"a_id": [
"d70brik"
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"score": [
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"text": [
"The decibel (dB) is a unit used to express the ratio of two values of a physical quantity, often power or intensity. One of these values is often a standard reference value, in which case the decibel is used to express the level of the other valu... | [] | [] | [
[]
] | ||
1a1ah2 | what is the big deal about "unlocked" smartphones? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1a1ah2/eli5_what_is_the_big_deal_about_unlocked/ | {
"a_id": [
"c8t6mkl",
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"score": [
4,
17
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"text": [
"an unlocked smart phone would allow you to use it on any carrier, and in the case of Europe put in any SIM card that is prepaid (or pay as you go). It means that you can have a phone that can work on any carrier and not be ... | [] | [] | [
[],
[]
] | ||
889wka | mechanical advantage | Could anyone explain me how does it become 4 times lighter in this system of pulleys?
_URL_0_ | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/889wka/eli5mechanical_advantage/ | {
"a_id": [
"dwj16ti"
],
"score": [
2
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"text": [
"Pulleys provide a mechanical advantage depending on how many wheels they have. \n\nThis can be explained using a few simple concepts. \n\nIf you were to tie a rope to an object (let’s say it’s a brick) and you threw the other end over a tree bran... | [] | [
"https://youtu.be/b7zWwo9dbiU?t=1m56s"
] | [
[]
] | |
1m4igy | English common law and U.S. common law... what, if anything, was kept in the new republic? | With the system of Common Law, cases set precedent for the rule of law, and sometimes, set the laws themselves. Once the U.S. formed its own government, were the former case laws nullified, dropped, or otherwise forgotten? Or, does the U.S. still have old English laws in place despite establishing a new government? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1m4igy/english_common_law_and_us_common_law_what_if/ | {
"a_id": [
"cc5q5bh"
],
"score": [
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"text": [
"(I'm going to take this on, since it has come up in my research. How it relates to my flair is a long story. The short version is \"church property disputes.\" So while I am a historian, I am not a lawyer, and some of what I think I have figured ... | [] | [] | [
[]
] | |
77eeqp | Can people with a cochlear implant hear the direction a sound is coming from? | I guess I'm asking about those who would be classified completely deaf without their implant, are they able to detect where in their environment a sound is coming from like normally functioning ears can? | askscience | https://www.reddit.com/r/askscience/comments/77eeqp/can_people_with_a_cochlear_implant_hear_the/ | {
"a_id": [
"dolkt1o"
],
"score": [
4
],
"text": [
"Directional hearing is largely a result of having two ears. Since sound must strike each one at different times depending on the distance and the brain can calculate a heading from that. There's no reason implants can't do the same."
]
} | [] | [] | [
[]
] | |
f69j35 | why do some cuts heal quicker than others | Ever since i started working as an electrician i frequently get small cuts on my hands. Nothing serious but i noticed these cuts tend to heal a lot slower then when i cut my self while shaving for example. Can somebody please enlighten me? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/f69j35/eli5_why_do_some_cuts_heal_quicker_than_others/ | {
"a_id": [
"fi3chny",
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"score": [
10,
3,
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"text": [
"Some parts of your body, like the inside of your mouth, are \"primed\" to heal and will heal much faster than other parts. Cuts on your hands, or anywhere where the skin is constantly being stretched a... | [] | [] | [
[],
[],
[]
] | |
51xirr | advertising with use of a competitor's name | Apologies for that bad title but I'll explain more here..
I've recently seen an advertisement for the Microsoft Surface tablet where, within the advert, the proposed user of the tablet claims they "couldn't do that with my mac".
Does Microsoft have to gain permission from Apple to do this? Do they have to pay Apple... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/51xirr/eli5_advertising_with_use_of_a_competitors_name/ | {
"a_id": [
"d7fmrt5"
],
"score": [
3
],
"text": [
"A Mac is a real thing that exists. You don't need permission to call something by its name. It's honestly that simple. "
]
} | [] | [] | [
[]
] | |
7xus8y | How did the Vietnamese react upon discovering the Killing Fields, extermination camps, etc during the Cambodian War? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7xus8y/how_did_the_vietnamese_react_upon_discovering_the/ | {
"a_id": [
"dubrnh8",
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"score": [
35,
21
],
"text": [
"Follow up question: how well known was extent of the Cambodian genocide by Vietnamese leadership, and what role did it play in the breakdown of relations and decision to invade?",
"Another follow-up question: why did ... | [] | [] | [
[],
[]
] | |
1jzcx8 | how come bottled water is such a hot commodity while other animals can still drink water from unfiltered lakes and rivers? | I understand that pure water = good for you, however why do we place such a high priority for it when any other mammal can drink lake water without any repercussions? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1jzcx8/eli5_how_come_bottled_water_is_such_a_hot/ | {
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6,
5,
14,
2,
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"text": [
"Wild animals have lots of parasites and DO face serious repercussions. There's a reason the animals in zoos live longer and grow bigge... | [] | [] | [
[],
[],
[],
[],
[],
[
"http://en.wikipedia.org/wiki/Giardia"
]
] | |
347r0z | How did the leaders of the time, both American and English, react to the Boston Tea Party? | Due to the recent events in Baltimore and seeing several social media posts talk about how the riots in Baltimore are justified in part because events in American History like the Boston Tea Party and Boston Massacre.
So far I've found that George Washington derided the the tea party because he felt as though private ... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/347r0z/how_did_the_leaders_of_the_time_both_american_and/ | {
"a_id": [
"cqt5dn8"
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"score": [
2
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"text": [
"I can't speak to the English aspect of things, but the Boston Tea Party made American leaders really uncomfortable. There's a really good book specifically answering your question called *The Shoemaker and The Tea Party* by Alfred Young. In a n... | [] | [] | [
[]
] | |
4i56yk | Why were so many early presidents fluent in greek and latin? Did they speak/write in it often? | _URL_0_
Just found this really interesting chart on the multi-language abilities of US presidents. Interesting first of all in how few languages modern presidents speak. But also I was surprised at how popular Latin and Greek were among early presidents. Why was this? Was this just something you did to show off your e... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4i56yk/why_were_so_many_early_presidents_fluent_in_greek/ | {
"a_id": [
"d2vkda2"
],
"score": [
22
],
"text": [
"Knowledge of Greek and Latin was a fundamental of a classical education. It's not to \"show off\" their educated status, per se, but just a part of being educated. It allowed them to read classical works of literature in their original language,... | [] | [
"https://en.wikipedia.org/wiki/List_of_multilingual_presidents_of_the_United_States"
] | [
[]
] | |
15vkmt | Are agricultural societies more violent than hunter gatherer ones? | Does anyone know if agricultural, urban societies are more violent (in terms of intra-personal as well as warfare) than hunter gatherer ones? Have any studies been done on this? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/15vkmt/are_agricultural_societies_more_violent_than/ | {
"a_id": [
"c7q7ljo",
"c7q95fq"
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"score": [
10,
5
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"text": [
"That is conventional thinking, that agricultural societies are violent while hunter-gatherers are peaceful, but it's wrong and misleading and draws heavily from the idea of the [Noble Savage](_URL_0_). It's more a matter of... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Noble_savage"
],
[
"http://www.reddit.com/r/AskHistorians/comments/12fu8t/are_steven_pinkers_claims_about_the_high_levels/"
]
] | |
5u5xxe | why does it always feel like there's somebody behind you in the dark? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5u5xxe/eli5_why_does_it_always_feel_like_theres_somebody/ | {
"a_id": [
"ddrlxpi",
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"score": [
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11
],
"text": [
"Most human instincts are based on a time and place when it was super dangerous to be out and about in the dark. There were no street lights or flashlights to guide the way. There was little to no protection from dangerous a... | [] | [] | [
[],
[]
] | ||
9rwmgg | why doesnt earthing a connection discharge all the electricity in the circuit? | And if there need to be a completion of a circuit for current to flow, how can the earth ever complete a circuit? Even lighting isnt a complete circuit, is it? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9rwmgg/eli5_why_doesnt_earthing_a_connection_discharge/ | {
"a_id": [
"e8k7ub2",
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"score": [
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2
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"text": [
"In normal circuit operation, you need a closed loop to keep the current flowing. But that is only true in \"steady state\"; you can have short term current flow without a closed loop. \n \nAll you really need to get cur... | [] | [] | [
[],
[]
] | |
ic95d | How much memory do different animals posses? | Mostly, how much of their environment do different animals remember? How do they know how to return to their nest?
How do they know where the food /water is?
Do insects remember their surroundings? Bees obviously have to remember where their hive is, but what about different insects that simply move around all day wi... | askscience | http://www.reddit.com/r/askscience/comments/ic95d/how_much_memory_do_different_animals_posses/ | {
"a_id": [
"c22l7r3",
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"score": [
3,
2,
2
],
"text": [
"Different animals might have different kinds of memory that are useful in their environment. For example, Clark's nutcrackers have really good spatial memory. Studies have shown that they can remember... | [] | [] | [
[],
[
"http://www.ncbi.nlm.nih.gov/pubmed?term=drier%20pkm%20drosophila",
"http://en.wikipedia.org/wiki/California_sea_hare"
],
[
"http://www.livescience.com/2909-bees-count.html",
"http://www.homelandsecuritynewswire.com/los-alamos-perfects-bee-explosives-detection-teams",
"http://www.sci... | |
1hw7om | When did streets stopped being narrow and crooked and started being wider with wide sidewalks and straight? | Also, were the streets in ancient Rome (or any other roman city) straight? When did the "grid" layout started becoming more common? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1hw7om/when_did_streets_stopped_being_narrow_and_crooked/ | {
"a_id": [
"cazahjz"
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"score": [
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"text": [
"The Romans actually made some of the straightest roads in the world since it was the empires life blood. \n\nBut in modern times its probably when we started to pave all the roads that it became easier to do in a straight line than a curved one.... | [] | [] | [
[]
] | |
3i91uf | why are some people able to survive huge falls while some die instantly from much smaller ones? | Vesna Vulovic survived a fall from 33,333 feet. There are people that fall from apartments windows, much lower down yet they often die. Is it just down to how they land? Or something more complex? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3i91uf/eli5_why_are_some_people_able_to_survive_huge/ | {
"a_id": [
"cued33n",
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"score": [
6,
2
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"text": [
"A mixture of extreme luck and what you land on. If its concrete your dead, if its grass or dirt you have a very small chance of bouncing a few times breaking lots of bones but still potentially surviving. Human terminal ve... | [] | [] | [
[],
[]
] | |
7o4q5u | why does perception of color change after taking off ski goggles? | I was out shoveling in the snow storm that hit NYC wearing red-pink ski goggles. When I came back into the house and took them off, everything had a greenish hue. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7o4q5u/eli5_why_does_perception_of_color_change_after/ | {
"a_id": [
"ds6rvw1",
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"score": [
7,
2,
13
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"text": [
"The brain automatically tries to balance our perception to a reasonable white balance which means a tinted lens or lighting will be compensated for given time. But once they are removed it also takes a... | [] | [] | [
[],
[],
[]
] | |
1nhfdr | Does electrolysis work to separate hydrogen and oxygen from salt water? or does it have to be purified first? | askscience | http://www.reddit.com/r/askscience/comments/1nhfdr/does_electrolysis_work_to_separate_hydrogen_and/ | {
"a_id": [
"ccimq5t",
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"score": [
3,
2
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"text": [
"[This page](_URL_0_) has a good explanation of the processes involved in the electrolysis of brine (a saturated NaCl solution). You do create hydrogen gas via this reaction, but instead of O2 you will form Cl2 (chlorine gas)... | [] | [] | [
[
"http://chemed.chem.wisc.edu/chempaths/GenChem-Textbook/Electrolysis-of-Brine-991.html"
],
[]
] | ||
1fk7rp | African-American Islam and the civil rights movement? | There were many influential Black Muslims in the Civil rights movement; and this was when the "Militant African American" stereotype was common. And when a new wave of Afrocentrism (Black Power, Black Panther Movement, etc.) was sweeping the US.
To what degree is this movement in African-American Identity connected t... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1fk7rp/africanamerican_islam_and_the_civil_rights/ | {
"a_id": [
"cab84z3"
],
"score": [
6
],
"text": [
"One thing I think you should make note of, and be careful not to mix, is the definition of African American members of Islam and African American members of the Nation of Islam (NOI). While superficially the two look similar, the differences are ... | [] | [] | [
[]
] | |
5gngc3 | why can't you pay for gift cards with a credit card? | I get the redundancy of it. You're basically transferring money from one card to another. But why is it not allowed as opposed to not being recommended? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5gngc3/eli5_why_cant_you_pay_for_gift_cards_with_a/ | {
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"datkq6o",
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"score": [
4,
2,
3,
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"text": [
"At some stores, the 2-3% bank charge on a credit card transaction isn't worth it. Let's say you buy a $100 gift card with your credit card, the store only gets $97.50. That's los... | [] | [] | [
[],
[],
[],
[]
] | |
1yr5nn | To what extent was Congress's declaration of war on Germany in 1917 a reflection of American public opinion at the time? | I know during WW2 America's declaration of war on Imperial Japan and Nazi Germany was (for the most part) supported heavily by the general public. I was simply wondering if this was the same way during WW1. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1yr5nn/to_what_extent_was_congresss_declaration_of_war/ | {
"a_id": [
"cfn6mge"
],
"score": [
2
],
"text": [
"This is a huge question; American public opinion changed quite often over the period 1914-1917 in reaction to such things as the Atlantic U-Boat campaign, the Zimmerman Telegraph, the Dublin Uprisings, and other events. The American public at thi... | [] | [] | [
[]
] | |
3mu6im | Alvin C. York | Hello all. Long-time reddit/askhistorians reader, first time posting. So, I'm a senior History major and after visiting the Sgt. Alvin York home in east TN last month I've decided to write my Senior seminar paper on that subject. Here are my two questions, would love to hear you guys' thoughts on either or both: (1) Fi... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3mu6im/alvin_c_york/ | {
"a_id": [
"cvi8b3x"
],
"score": [
2
],
"text": [
"The Tennessee State Museum in Nashville used to have a display on York- including the old Sharps and Hankins rifle he hunted with as a boy. There's also some York stuff at the [TN State Archives](_URL_0_) \n\nMyself, I'd prefer a trip to Jamest... | [] | [] | [
[
"http://sos.tn.gov/search/node/Alvin%20York"
]
] | |
cki7ls | what is a motif in music? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cki7ls/eli5_what_is_a_motif_in_music/ | {
"a_id": [
"evnlcnz"
],
"score": [
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"text": [
"Your motif is part of music that's repeated to invoke a specific emotion or feeling in a musical piece.\n\nI'm some styles of music a motif will come back always the same to create familiarity, In other pieces a motif can change a little bit ever... | [] | [] | [
[]
] | ||
3uu5lh | why do astronauts wear white? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3uu5lh/eli5_why_do_astronauts_wear_white/ | {
"a_id": [
"cxhsq7m",
"cxhsrwi"
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"score": [
8,
13
],
"text": [
"Astronauts wear white to reflect sunlight. Otherwise the spacesuit would get too hot and the person inside could be in serious danger, or even die, from being too hot. One layer of the space suit is called the [Liquid Cooli... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Liquid_Cooling_and_Ventilation_Garment"
],
[]
] | ||
2tlhls | whatever happend to kony2012 and why isnt there something similar for boko haram who's actions have been much worse? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2tlhls/eli5_whatever_happend_to_kony2012_and_why_isnt/ | {
"a_id": [
"co038bi",
"co03c6x",
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"score": [
3,
11,
5
],
"text": [
"Probably because Kony2012 didn't do anything. ",
"If I recall correctly, there were two main reasons why the Kony 2012 hype quickly died down:\n\n1) People who were actually familiar with the situa... | [] | [] | [
[],
[],
[]
] | ||
1q2rod | How did the Vatican respond to the Fascist Italian Government? | I Googled the topic and most sources seem to suggest the Vatican was very pro-fascism and benefited financially from Mussolini's rule; Mussolini also "sucked up" to the Roman Catholic Church a lot.
I'm wondering if there's more to the story and would love any extra information on the subject. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1q2rod/how_did_the_vatican_respond_to_the_fascist/ | {
"a_id": [
"cd8qzyx"
],
"score": [
4
],
"text": [
"The two were in direct conflict almost immediately until they agreed to the Lateran Treaty. They were basically fighting over the power to indoctrinate Italy's youth. The Church also believed that Fascism contradicted their stance on free will, a... | [] | [] | [
[]
] | |
14lqfh | Why does the passage of time change when space is curve? Or, why/how is time so inextricably linked to space? | **curved
I understand how space can be curved with gravity, but I don't understand why this changes the passage of the time in that space. I hear about the space-time web, but why is time linked to space in so much that if the space just changes shape (curves), so does the time? | askscience | http://www.reddit.com/r/askscience/comments/14lqfh/why_does_the_passage_of_time_change_when_space_is/ | {
"a_id": [
"c7e8dkw",
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"score": [
4,
5
],
"text": [
"The answer is ultimately because that's how the universe works. This is really all science can say.\n\nWe've rigorously shown via the scientific method that this model of reality is extremely accurate and precise at predicti... | [] | [] | [
[],
[
"http://www.reddit.com/r/askscience/comments/pu1uj/are_time_dimensions_the_same_relatively_as_space/c3s9343",
"http://www.reddit.com/r/askscience/comments/l40pl/how_do_temporal_dimensions_work/c2plq3r",
"http://en.wikipedia.org/wiki/Lorentz_transformation",
"http://en.wikipedia.org/wiki/Spac... | |
32la0w | If the Universe were shrunk to something akin to the size of Earth, what would the scale for stars, planets, etc. be? | I mean the observable universe to the edge of our cosmic horizon and scale like matchstick heads, golf balls, BBs, single atoms etc. I know space is empty, but just how empty? | askscience | http://www.reddit.com/r/askscience/comments/32la0w/if_the_universe_were_shrunk_to_something_akin_to/ | {
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"cqcrtil",
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"cqd432k",
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"score": [
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299,
41,
27,
4,
23,
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26,
30,
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],
"text":... | [] | [] | [
[
"http://www.wolframalpha.com/input/?i=1.5e-20+*+%28780000*3e16+m%29",
"http://www.reddit.com/r/askscience/comments/32la0w/if_the_universe_were_shrunk_to_something_akin_to/cqch1iu",
"http://www.wolframalpha.com/input/?i=1.5e-20+*+%286371000+m%29",
"http://www.wolframalpha.com/input/?i=1.5e-20+*+7e8... | |
fblc3y | why does vasoconstriction lead to better blood flow? | I keep reading, as a science student, that when blood flow or pressure goes down, arterioles constrict in order to raise blood pressure. But vasoconstriction actually increases resistance, thereby depriving the tissue further of blood flow.
So what is it that I'm not understanding? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fblc3y/eli5_why_does_vasoconstriction_lead_to_better/ | {
"a_id": [
"fj4zlnr"
],
"score": [
3
],
"text": [
"Vasoconstriction does not increase blood *flow*. It increases blood *pressure*. If all things were equal, that would normally increase blood flow. But as you note, making the blood vessels smaller increases the resistance to flow. \n \nIf y... | [] | [] | [
[]
] | |
79fbf6 | why are "girl" pushups so much easier than regular ones? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/79fbf6/eli5_why_are_girl_pushups_so_much_easier_than/ | {
"a_id": [
"dp1iftw",
"dp1im59"
],
"score": [
2,
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],
"text": [
"There was an r/askscience post that blew up a couple days ago about what percentage of you body weight do you lift up while doing push ups. \nIIRC: Knee push ups had a smaller percentage, meaning you were pushing up less wei... | [] | [] | [
[
"https://i.imgur.com/2PagQIv.png",
"https://www.ncbi.nlm.nih.gov/pubmed/20179649"
],
[]
] | ||
1zajee | If the gravitational force is transmited at the speed of light, does the earth orbit a 8-minutes-before sun? | 'Seen' from the center of the galaxy or any other outter reference frame. | askscience | http://www.reddit.com/r/askscience/comments/1zajee/if_the_gravitational_force_is_transmited_at_the/ | {
"a_id": [
"cfryc7l",
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],
"score": [
39,
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],
"text": [
"There's a subtlety: the gravitational field of the sun is retarded by 8 minutes, but it also encodes information about the sun's velocity, so the Earth is actually orbiting where the sun is \"now.\"\n\n_URL_0_",
"Quest... | [] | [] | [
[
"http://arxiv.org/pdf/gr-qc/9909087.pdf?origin=publication_detail"
],
[]
] | |
37xygt | In Gibbon's The Decline and Fall of the Romans Empire he calculates the population of the Romans world at the time of Claudius to be 120 million people. How accurate is this estimate? | In chapter two, Gibbon mentions that Claudius exercised a census of Roman citizens and extrapolates from there. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/37xygt/in_gibbons_the_decline_and_fall_of_the_romans/ | {
"a_id": [
"crr7zxv"
],
"score": [
3
],
"text": [
"I do not know if he is correct but we must remember that a census of Roman citizens would only include a fraction of the population since a large portion of population were not actually considered citizens."
]
} | [] | [] | [
[]
] |
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