q_id stringlengths 5 6 | title stringlengths 3 301 | selftext stringlengths 0 39.2k | document stringclasses 1
value | subreddit stringclasses 3
values | url stringlengths 4 132 | answers dict | title_urls list | selftext_urls list | answers_urls list |
|---|---|---|---|---|---|---|---|---|---|
6hwo5f | Why is the domestication of dogs not considered the beginning of the agricultural revolution? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6hwo5f/why_is_the_domestication_of_dogs_not_considered/ | {
"a_id": [
"dj1wn8e"
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"score": [
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"text": [
"Hi, this question would be worth x-posting to our sister sub, r/AskAnthropology: while there are some specialists in pre-history here, there is a greater focus on early time periods over there."
]
} | [] | [] | [
[]
] | ||
zs3z1 | What's the earliest evidence we have of jokes? What is the oldest one we know? were there jokes as we known them today back when Ancient civilizations stood? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/zs3z1/whats_the_earliest_evidence_we_have_of_jokes_what/ | {
"a_id": [
"c679mzj",
"c67a1s4",
"c67jyv6"
],
"score": [
6,
8,
2
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"text": [
"To paraphrase:\n\nA man walks over to a slave trader\n\"It's this slave you sold me yesterday. He's died\"\nthe slave trader says\n\"That's odd, he never did that when he was with me\"\n\nThis is an Anc... | [] | [] | [
[],
[
"http://www.reuters.com/article/2008/07/31/us-joke-odd-idUSKUA14785120080731"
],
[]
] | ||
1zq3x2 | Civil War literature suggestions? | Looking for a overall history of the American Civil War. Any good books to recommend? SIAP | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1zq3x2/civil_war_literature_suggestions/ | {
"a_id": [
"cfvwhyp",
"cfvwj7r"
],
"score": [
7,
3
],
"text": [
"Depends on how committed you are, but Shelby Foote's *The Civil War: A Narrative* is pretty much the gold standard in Civil War history. It's a three volume work, very long and thorough. ",
"If you haven't already, you m... | [] | [] | [
[],
[]
] | |
90667h | To what extent was local law allowed in the Roman Empire. | Specifically interested in whether the Romans ever allowed locals in the provinces to perform executions for violating their local laws. Did this evolve over time? But any information on punishments in general would be good to know. Thanks! | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/90667h/to_what_extent_was_local_law_allowed_in_the_roman/ | {
"a_id": [
"e2o3kpt"
],
"score": [
6
],
"text": [
"Local law was very much allowed in the Roman Empire, as a holdover from Republican days, whether the matter was civil or generally criminal. Governors of provinces generally allowed local courts to handle legal matters, only stepping in when cas... | [] | [] | [
[]
] | |
6ir7vp | why betting the same amount on two boxers to win will not always give a payout due to differing odds. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6ir7vp/eli5_why_betting_the_same_amount_on_two_boxers_to/ | {
"a_id": [
"dj8gonu",
"dj8i804",
"dj8j4qw",
"dj8k4a2",
"dj8p0i5"
],
"score": [
3,
2,
2,
2,
2
],
"text": [
"Any real-world bookie is going to adjust the odds and payouts so that they get a cut for themselves (the vig). They're not working for charity.",
"Like a... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
tv8mr | I'm diabetic and I want to know about the industrially production of insulin | I heard something about using yeast, but I couldn't find a good explanation about it.
Thanks, reddit! | askscience | http://www.reddit.com/r/askscience/comments/tv8mr/im_diabetic_and_i_want_to_know_about_the/ | {
"a_id": [
"c4q0p6j",
"c4q1lpv"
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"score": [
4,
2
],
"text": [
"[Wiki](_URL_0_) says this:\n\n > Recombinant human insulin. Thanks to study introduced by Ivan Garelli PhD, recombinant insulin has almost completely replaced insulin obtained from animal sources (e.g. pigs and cattle) for t... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Synthetic_insulin_production#Applications_of_recombinant_DNA_technology",
"http://www.businessweek.com/magazine/content/07_33/b4046083.htm",
"http://en.wikipedia.org/wiki/Insulin_therapy#Principles"
],
[
"http://products.sanofi.us/lantus/lantus.html#section-11"
... | |
nel3i | Is their a theoretical limit to how much a pound of muscle can do? Is it possible to calculate, knowing a single persons muscle mass, how much they would be able to lift? (this is factoring in a healthy person, with full tanks of energy and no injuries.) | askscience | http://www.reddit.com/r/askscience/comments/nel3i/is_their_a_theoretical_limit_to_how_much_a_pound/ | {
"a_id": [
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"text": [
"This is pretty hackneyed, but I'll post it anyway:\nkonstantin konstantinovs is a super strong Latvian powerlifter. He weights around 268lbs and has maxed out his deadlift at 938lb... | [] | [] | [
[],
[],
[],
[]
] | ||
2rs54w | how the fuck is spreading jelly (i.e.vapo rub) on my chest supposed to help congestion? | I mean really | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2rs54w/eli5how_the_fuck_is_spreading_jelly_ievapo_rub_on/ | {
"a_id": [
"cniqos8",
"cniqxsc"
],
"score": [
6,
3
],
"text": [
"You put it on your chest because you're going to be drawing air in to your lungs from that area. The vapors from the jelly mix with the air you breathe.",
"The biggest cause of congestion is inflamed tubes.\n\nThe goop i... | [] | [] | [
[],
[]
] | |
1nuyi8 | Would World War I be classified as a "World War" if the US never got involved? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1nuyi8/would_world_war_i_be_classified_as_a_world_war_if/ | {
"a_id": [
"ccmagxr",
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"score": [
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2
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"text": [
"The first known use of the proper name \"World War\" (as opposed to \"Great War\" or \"European War\") was in 1919, if the *OED* is to be believed. It was used as a general descriptor (\"a world-war\" ... | [] | [] | [
[
"http://www.jstor.org/stable/3180695"
],
[],
[]
] | ||
32pgkz | why do people look slimmer in certain colors? | I read an article awhile back about a woman who took a progress picture and it appeared as if she lost a lot of weight, but she revealed that all she had done was stand up straighter, fix her hair, and **wear a different color**. I was wondering how wearing a different color could change someone's bodily appearance. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/32pgkz/eli5_why_do_people_look_slimmer_in_certain_colors/ | {
"a_id": [
"cqdfcb2"
],
"score": [
2
],
"text": [
"[Here's](_URL_0_) an article about how wearing black (or other dark colors) can make you look slimmer: \n\n > If you have a very light T-shirt on, your shape will be noticeable within the fabric. Any curves, bulges, or flat areas will be noticea... | [] | [] | [
[
"http://wardrobeadvice.com/why-does-black-make-you-look-skinnier/"
]
] | |
atsgk4 | why does hand sanitizer feel so cold? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/atsgk4/eli5_why_does_hand_sanitizer_feel_so_cold/ | {
"a_id": [
"eh36zcd",
"eh370wu",
"eh39ouv",
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],
"score": [
3,
22,
2,
2
],
"text": [
"Hand sanitizers are made to be spread over the hands and then dry quickly. Usually this is done by dissolving the sanitizing agent in a highly volatile (means evaporates or vapori... | [] | [] | [
[],
[],
[],
[]
] | ||
2c449l | Does lightening ever travel up, above the clouds to interact with planes etc.? | askscience | http://www.reddit.com/r/askscience/comments/2c449l/does_lightening_ever_travel_up_above_the_clouds/ | {
"a_id": [
"cjbw942",
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],
"score": [
2,
2
],
"text": [
"Well, lightning doesn't care about direction, only about the electric potential. There are plenty of strikes [between or inside clouds](_URL_1_).\n\n[Planes also get struck by lightning all the time](_URL_0_), which is gener... | [] | [] | [
[
"http://petergreenberg.com/2014/04/07/what-happens-lightning-strikes-an-airplane/",
"http://en.wikipedia.org/wiki/Lightning#Cloud_to_cloud_.28CC.29_and_Intra-Cloud_.28IC.29",
"http://www.lufthansa-technik.com/lightning-strikes"
],
[
"http://en.m.wikipedia.org/wiki/Upper-atmospheric_lightning",... | ||
2fleis | the meaning/significance of all the nazi stuff in pink floyd's the wall. | Ok Roger Waters and crew: I'm on board for the whole "only child, absent father, oppressive mother, stifling English education, growing up to be a drug addled, slightly crazed (maybe suicidal) rock star" thing. But the "double-hammer/fire up the ovens" bits, etc.? Huh?? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fleis/eli5_the_meaningsignificance_of_all_the_nazi/ | {
"a_id": [
"ckacfxp",
"ckadvbp",
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"score": [
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4,
4
],
"text": [
"It's about shutting out things that are not like ourselves and withdrawing by being unpleasant to people around us. Pink has been so hurt by all of the things that have happened in his life that he is p... | [] | [] | [
[
"http://www.thewallanalysis.com/main/frequently-asked-questions.html#racist"
],
[],
[]
] | |
2j7m9e | [Medicine] Do flu shots really contain only one strain of influenza? If so, how is that one particular strain chosen every year? What are the reasons we cannot inoculate with multiple strains? | askscience | http://www.reddit.com/r/askscience/comments/2j7m9e/medicine_do_flu_shots_really_contain_only_one/ | {
"a_id": [
"cl98lwt",
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"score": [
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16
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"text": [
"Most flu vaccines protect against 3 viruses (two influenza A viruses (an H1N1 and an H3N2) and an influenza B virus) with some providing protection against 4 viruses.\n\nThe makeup of each vaccine that will be licensed for ... | [] | [] | [
[
"http://www.cdc.gov/flu/professionals/vaccination/virusqa.htm"
],
[]
] | ||
2f65ot | when a stock market crashes and everyone is desperately 'selling', who is actually willing to 'buy'? | Wolf of Wall Street got me thinking about this. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2f65ot/eli5_when_a_stock_market_crashes_and_everyone_is/ | {
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"score": [
3,
34,
3,
3,
2,
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],
"text": [
"Smart people with cash. Buying when the market crashes is a great investment, **IF** you can afford to wait unti... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
2n0o0k | Is it possible for things we consider to be waves to exhibit particle like behaviours at a quantum level? | If at a quantum level things we consider to be particles are able to exhibit wave like behaviours, is it possible for waves of light to behave in particle like ways? Why or why not? | askscience | http://www.reddit.com/r/askscience/comments/2n0o0k/is_it_possible_for_things_we_consider_to_be_waves/ | {
"a_id": [
"cm9ptph",
"cm9qenu"
],
"score": [
3,
2
],
"text": [
"It works both ways: Quantum objects exhibit the characteristics of both particles and of waves, but are they themselves neither.",
" > If at a quantum level things we consider to be particles are able to exhibit wave lik... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Phonon",
"http://en.wikipedia.org/wiki/Quasiparticle#Examples_of_quasiparticles_and_collective_excitations"
]
] | |
ein8rj | why is it that lobsters have the possibility to be born with so many rare colorations? | I’ve seen blue lobsters, cotton candy lobsters, and yellow lobsters. If they all had equal chances of existing, I’d understand, but any coloration besides red seems to be one in a million. Why is this possible? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/ein8rj/eli5_why_is_it_that_lobsters_have_the_possibility/ | {
"a_id": [
"fcsdv47"
],
"score": [
4
],
"text": [
"Short answer:\nEach lobster has color pigments (red, blue, yellow), that determine the color of the shell. \n\nSpecific mutations change the amount of pigment and thus the color.\n\nSome mutations that influence (for example) blue pigment natural... | [] | [] | [
[
"https://lobsteranywhere.com/seafood-savvy/lobster-red/"
]
] | |
1tt92d | why doesn't water help with dry skin? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1tt92d/eli5_why_doesnt_water_help_with_dry_skin/ | {
"a_id": [
"ceb715i",
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"cebijvr",
"cebjxj6",
"cebkju3",
"cebkw1m",
"cebltis",
"c... | [] | [] | [
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"http://dermatology.about.com/b/2008/02/05/is-water-good-or-bad-for-dry-skin.htm"
],
[
"http://imgur.com/PAhex8A",
"http://www.reddit.com/r/explainlikeimfive/comments/1tt92d/eli5_why_doesnt_water_help_with_dry_skin/cebcrff",
"about.com",
"http://www.reddit.com/r/explainlikeimfive/comments/... | ||
10tzg2 | what a "trust fund baby" is and exactly how a "trust fund" works. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/10tzg2/eli5_what_a_trust_fund_baby_is_and_exactly_how_a/ | {
"a_id": [
"c6glzkw",
"c6gnudr",
"c6gvit1"
],
"score": [
5,
9,
5
],
"text": [
"Trust funds are basically special savings accounts that pay you an allowance. A young person with an inherited trust fund is called a trust fund baby.",
"A trust is a specific legal entity that allo... | [] | [] | [
[],
[],
[
"http://www.reddit.com/r/explainlikeimfive/comments/j7nxt/explain_to_me_how_trust_funds_actually_work/c29u1kr",
"http://www.reddit.com/r/explainlikeimfive/comments/j86h2/the_fiveyearolds_guide_to_the_galaxy/"
]
] | ||
4vgset | it is said that children are (almost) immune to motion sickness up to the age of 2. why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4vgset/eli5_it_is_said_that_children_are_almost_immune/ | {
"a_id": [
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"score": [
159,
83,
2,
4
],
"text": [
"The main reason for motion sickness is our body has trouble reconciling the visual cues for no movement with the physical sensation of movement. The difference causes our bod t... | [] | [] | [
[],
[],
[],
[]
] | ||
6007xy | court mandated community service is like forced labour? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6007xy/eli5_court_mandated_community_service_is_like/ | {
"a_id": [
"df2gadb",
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8,
2
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"text": [
"Court mandated community service is offered to people who commit a small crime, such as stealing a chocolate bar. The judge or justice of peace may give you an option to show that you are not a bad pers... | [] | [] | [
[],
[],
[]
] | ||
6i531w | if the reason most mammals have testicles outside their bodies, what about sea-mammals (seals, whales etc)? how do they get around the issue of high body temperature affecting sperm? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6i531w/eli5_if_the_reason_most_mammals_have_testicles/ | {
"a_id": [
"dj3k4ox"
],
"score": [
3
],
"text": [
"Sea mammals keep their testicles in internal pouches surrounded by thick tendon-like tissues that keep the temperature lower than the surrounding muscles."
]
} | [] | [] | [
[]
] | ||
1r7jb6 | why are musicians/composers like mozart regarded so highly? if something almost just like it came along now, would it be regarded as highly? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1r7jb6/eli5_why_are_musicianscomposers_like_mozart/ | {
"a_id": [
"cdkhna0"
],
"score": [
2
],
"text": [
"W.A. Mozart is considered by most musicians to be one of the most influential composers for a variety of reasons:\n\n(WALL OF TEXT WARNING, I'm on mobile, sorry)\n\n-Prolific composer: He composed over 600 works throughout his lifetime, for a lar... | [] | [] | [
[]
] | ||
fa5sfy | why can some women be in labor for more than a day and some give birth in less than an hour? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fa5sfy/eli5_why_can_some_women_be_in_labor_for_more_than/ | {
"a_id": [
"fiw4vpm"
],
"score": [
2
],
"text": [
"That’s just the way it goes. There will always be a range of time periods. Some babies, especially the second and third births, are more ready and able to make their escape."
]
} | [] | [] | [
[]
] | ||
5kq0ko | how do colony based insects, such as ants, decide who to make the queen (or king) and how does that one get so much bigger/different in appearance? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5kq0ko/eli5_how_do_colony_based_insects_such_as_ants/ | {
"a_id": [
"dbppngs"
],
"score": [
5
],
"text": [
"The queen ant mates with a male and his sperm is used by her to produce eggs. The fertilized eggs develop into females and the unfertilized eggs develop into males(haplo-diploid sex determination). The workers feed the larvae and on the basis of... | [] | [] | [
[]
] | ||
fvyxti | how is it that some drugs are metabolised through the kidneys and others through the liver? | I always hear this but don’t understand how this can work? Why aren’t all drugs metabolised through the kidney or vice versa? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fvyxti/eli5_how_is_it_that_some_drugs_are_metabolised/ | {
"a_id": [
"fml9ihh",
"fmlc9s5"
],
"score": [
2,
5
],
"text": [
"Metabolism of drugs means that a certain chemical in the body, typically an enzyme, does something to the drug. Obviously, those enzymes can't operate anywhere else than where they are; certain enzymes are present in the liv... | [] | [] | [
[],
[]
] | |
57eygu | How does the revised galaxy count effect Dark Matter? | Hi All
I was just wondering how the revised galaxy count effects the issue of dark matter. As I understand it dark matter makes up a large proportion of the universe we cannot see, do the extra galaxies go any way towards removing the need for dark matter? | askscience | https://www.reddit.com/r/askscience/comments/57eygu/how_does_the_revised_galaxy_count_effect_dark/ | {
"a_id": [
"d8ro0jj",
"d8tjx01"
],
"score": [
2,
2
],
"text": [
"No the gaaxy count does not matter at all for the dark matter hypothesis. In order to be able to explain the scalar power spectrum of the cosmic microwave background you already need to assume something like dark matter. Sin... | [] | [] | [
[],
[]
] | |
1acdlx | Are octopuses equally skilled with each arm or do they prefer one or more arms over the others like humans? | askscience | http://www.reddit.com/r/askscience/comments/1acdlx/are_octopuses_equally_skilled_with_each_arm_or_do/ | {
"a_id": [
"c8w9k0z"
],
"score": [
9
],
"text": [
"[This abstract](_URL_0_) of an article from the *Journal of Comparative Psychology* (J Comp Psychol. 2006 Aug;120(3):198-204.) indicates that researchers did find evidence for octopuses favoring particular limbs.\n\nFull abstract:\n\n > Previous ... | [] | [] | [
[
"http://www.ncbi.nlm.nih.gov/pubmed/16893257"
]
] | ||
cv7dfh | How do stimulants affect your heart rate? | askscience | https://www.reddit.com/r/askscience/comments/cv7dfh/how_do_stimulants_affect_your_heart_rate/ | {
"a_id": [
"ey2zz83",
"ey4cv0z"
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"score": [
4,
2
],
"text": [
"Stimulants increase the activity of the sympathetic nervous system. They increase or mimic the action of adrenaline. Basically, there are 3 types of stimulants:\n\n- Releasing agents (like cocaine) release more adrenaline.\n... | [] | [] | [
[],
[]
] | ||
703fyj | i'm a casual sports watcher. what's the difference between the level of skill/play between the nfl/nba and their ncaa counterparts? | I see it all the time on Reddit, how these college kids aren't ready for the Pros yet, how college basketball stars get smoked (them saying this not me) by NBA regulars in street pick up games that get posted on social media, etc.
My question is WHY and HOW.
Some of these colleges they literally live and die on their... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/703fyj/eli5im_a_casual_sports_watcher_whats_the/ | {
"a_id": [
"dn02n7v",
"dn03rqe",
"dn02n7v",
"dn03rqe"
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"score": [
2,
5,
2,
5
],
"text": [
"Well, \"Some of these colleges they literally live and die on their sports programs\" isn't really true. Their educational efforts are perhaps not as splashy, but they are the uni... | [] | [] | [
[],
[],
[],
[]
] | |
53qvm7 | why people see 'waves' of color in the dark. | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/53qvm7/eli5_why_people_see_waves_of_color_in_the_dark/ | {
"a_id": [
"d7vidhs"
],
"score": [
5
],
"text": [
"Because there's light, and your visual centers are doing their thing, but without enough information to make sense of it. \n\nYou might enjoy this article: _URL_0_"
]
} | [] | [] | [
[
"http://scienceline.org/2014/12/why-do-we-see-colors-with-our-eyes-closed/"
]
] | |
2jul65 | How are gasses commercially produced? | For example in oxygen tanks how is this gas produced and then compressed? | askscience | http://www.reddit.com/r/askscience/comments/2jul65/how_are_gasses_commercially_produced/ | {
"a_id": [
"clfn6ih"
],
"score": [
2
],
"text": [
"There are quite a few ways to make gasses, though once a gas is made and purified it is usually compressed using some type of mechanical pump.\n\n\nLets look at oxygen for example. You could use a cryogenic distillation process or [pressure swin... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Pressure_swing_adsorption"
]
] | |
c968cw | why is the amazon being deforested? is it just for the wood or are there other reasons? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c968cw/eli5_why_is_the_amazon_being_deforested_is_it/ | {
"a_id": [
"estfm5z"
],
"score": [
15
],
"text": [
"Its to provide grazing land for cattle. And also for palm oil farms. \n\nThey cut down the rainforest then plant either grass or lots of just one type of tree.\n\nIts not really for the wood that much at all."
]
} | [] | [] | [
[]
] | ||
3dgj12 | At what point could you escape a planet's gravity by jumping? | Gravitational acceleration on earth is about 9.81m/s^2 on the surface. That number is dependant on the mass of the earth and the distance you are from the centre of the earth. On other planets and moons the gravity may be less than that because they are smaller. If the force of gravity is less, then less energy is requ... | askscience | http://www.reddit.com/r/askscience/comments/3dgj12/at_what_point_could_you_escape_a_planets_gravity/ | {
"a_id": [
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"Jump. Measure how high you jump in meters. Call this height \"h\". sqroot(2\\*h\\*9.81) should be your initial velocity. We want this to be equal to escape velocity, which is sqroot(2gr), where g is the surface gravity and r... | [] | [] | [
[],
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] | |
a41luk | how does the weather get reported by each town to the weather app on my phone? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a41luk/eli5_how_does_the_weather_get_reported_by_each/ | {
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"There are organizations (large groups of people) who have satellites (giant cameras and sensors in outer space) which send the information they find to weather apps.\n\nThe satellites along with local meteorologists (weather... | [] | [] | [
[],
[]
] | ||
444p8e | if we keep raising the minimum wage then won't it just decrease the value of a dollar and cause to prices to rise because of inflation? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/444p8e/eli5_if_we_keep_raising_the_minimum_wage_then/ | {
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"text": [
"It does cause inflation, but minimum wage proponents don't see it that way. Yet uf you look at countries where minimum wage is high, the price of goods is higher as well.\n\nThe re... | [] | [] | [
[],
[
"http://www.dol.gov/featured/minimum-wage/mythbuster",
"http://www.investopedia.com/ask/answers/052815/does-raising-minimum-wage-increase-inflation.asp",
"http://www.fool.com/investing/general/2014/06/08/what-will-a-higher-minimum-wage-cost-you-at-mcdona.aspx"
],
[],
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] | ||
3tzj1c | is there a laser color stronger than the others? if so, why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3tzj1c/eli5is_there_a_laser_color_stronger_than_the/ | {
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"text": [
"Blue is the strongest colour that we can see because it has the highest frequency of visible light. That means that there is more energy per second being delivered by a blue laser than a red laser. A UV... | [] | [] | [
[],
[],
[]
] | ||
bz3b8q | Altitude Sickness? How sudden can it take effect, what can happen? | Hello again scientists! So, my latest question is pretty simple. Altitude sickness, how long does it take to have an effect? I'm finding online that it usually takes between 12-24 hours for somebody to feel ill due to a raise of over 8000 feet. Well, what if somebody were suddenly exposed to such an altitude!? What if,... | askscience | https://www.reddit.com/r/askscience/comments/bz3b8q/altitude_sickness_how_sudden_can_it_take_effect/ | {
"a_id": [
"eqsxrpi"
],
"score": [
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"text": [
"The cabin altitude of most airliners when in the cruise is about 8000ft. For most healthy people being suddenly raised to 8000ft pressure altitude and spending many hours there is a complete non-issue. There are plenty of long haul flights over t... | [] | [] | [
[]
] | |
cc674h | octonions - what exactly are they? | I just saw Eric Weinstein talk about them on Joe Rogans podcast, but I couldn’t quite keep up. What exactly are they? Why are they significant? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cc674h/eli5_octonions_what_exactly_are_they/ | {
"a_id": [
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"score": [
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"text": [
"The complex numbers are a sort of two-dimensional extension of the real number line, with an imaginary axis (i, 2i, 3i, ...) along with the ordinary real axis (1, 2, 3, ...). It turns out that you can extend this idea even farther to have four d... | [] | [] | [
[]
] | |
2fxamy | why does yeast in bread-making not produce alcohol like yeast in brewing? | I understand that in brewing the yeast eats the sugar and poops out alcohol, but why does this not happen when making bread? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fxamy/eli5_why_does_yeast_in_breadmaking_not_produce/ | {
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"It does, a little. But the amount produced is very small - bread rises for a matter of a day or two, brewing can take weeks or months.",
"You can make drinkable alcohol using baking yeast (and great... | [] | [] | [
[],
[],
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] | |
2weikj | it is a famous brag that England was never successfully invaded after 1066. So why doesn't the Dutch Army lead by William of Orange count? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2weikj/it_is_a_famous_brag_that_england_was_never/ | {
"a_id": [
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"text": [
"This isn't my area of expertise, so someone else might be able to provide a better answer or more references, but as I understand it there are two issues here, one to do with the particular circumstances of William's 'invasion,' and one to do wit... | [] | [] | [
[]
] | ||
2xl9kn | what is the ultimate luminosity? how many photons can we fit in a unit of 3d space? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2xl9kn/eli5_what_is_the_ultimate_luminosity_how_many/ | {
"a_id": [
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"text": [
"Interesting question. My first response is an infinite number. Quantum field theory puts no limit on the number of photons that can be in the same place. But quantum field theory doesn't account for the gravity of the photon... | [] | [] | [
[],
[]
] | ||
c9ud11 | after a natural disaster, what is the benefit of declaring state of emergency? | Why do states do this and how does it effect insurance claims? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/c9ud11/eli5_after_a_natural_disaster_what_is_the_benefit/ | {
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"Not sure about insurance. But declaring a state of emergency will activate funds that have been set aside for clean up, repairs, and other needed things for ... | [] | [] | [
[],
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[],
[],
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] | |
2ert10 | When was the ironclad warship firs proposed? | The Gloire and the Warrior are both very famous early ironclads. But who came up with the idea, and who was the driving force to get these revolutionary warships built? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2ert10/when_was_the_ironclad_warship_firs_proposed/ | {
"a_id": [
"ck2mili"
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"score": [
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"text": [
"It's hard to say when the first ironclad warship was proposed, as many people came up with the idea of putting iron plating on warships at many different times. For example, the \"atakebune\" warships of the 16th century Japanese warlord Oda Nobu... | [] | [] | [
[
"http://books.google.com/books/about/The_Introduction_of_the_Ironclad_Warship.html?id=rR95Mi7vVHoC"
]
] | |
7cgn2s | what holds fingernails in place? how far under the skin do they go? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/7cgn2s/eli5_what_holds_fingernails_in_place_how_far/ | {
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"Your fingernails and toenails are made up of cells that form into a hard surface called keratin. Keratin is also what makes up your hair and other parts of animals, like horse hooves and rhino horns.... | [] | [] | [
[],
[],
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4sz7lr | Why wasn't LVT's used at D-day beach landings? | It has crossed my mind a few times now, and i thought to seek the knowledge of an historian. Also i thought it to be an interesting discussion.
For one, i find it quiet odd. Since it was used to quite an degree in the Pacific theater, judging by the success it had on a lot of the beach landings on island's. I don't se... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4sz7lr/why_wasnt_lvts_used_at_dday_beach_landings/ | {
"a_id": [
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"text": [
"At the time, there was not enough LVTs for use in both the European and Pacific theaters. The initial stages of Operation Forager (the invasion of the Mariana and Palau islands) underwent preparation and execution at about the same time as D-Day,... | [] | [] | [
[
"http://afvdb.50megs.com/usa/lvta4.html",
"http://afvdb.50megs.com/usa/lvta1.html"
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2mpcso | from newborn onesies to blouses, shirts and pants... why do men's and women's clothing fasten in opposite directions? | I've always noticed that men's shirts have the buttons on the right, while women's have them on the left. Now, I've discovered that even some newborn zipper onesies have the sipper going down one leg or the other depending on if it's made for a boy or a girl. What gives? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2mpcso/eli5_from_newborn_onesies_to_blouses_shirts_and/ | {
"a_id": [
"cm6c79s",
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"score": [
10,
4
],
"text": [
"Men's jackets were made to be unbuttoned with their right hand so they could take it off with a cane in one hand. Women were dressed by other people so it's made to be easy for right-handed maids to button them up. Then th... | [] | [] | [
[],
[]
] | |
2eg14v | how do these child sex allegations get proven 30+ years later if there is no pictures/videos? e.g cliff richards atm | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2eg14v/eli5_how_do_these_child_sex_allegations_get/ | {
"a_id": [
"cjz6tjh"
],
"score": [
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],
"text": [
"Rape cases are very difficult to prove especially with no physical evidence.\n\nNot sure who Cliff Richards is, but like when Sandusky got convicted. There were so many people that all told similar stories. It's a he said she said thing, but when... | [] | [] | [
[]
] | ||
3nwj4q | Why were the Swedish armies in the 17th and early 18th century so effective/had high morale? | After reading about some wars Sweden was involved and one thing caught my attention. Often the Swedish army was able to defeat a larger enemy. At Fraustadt the 20000 man strong army of Saxons and Russians was broken by a Swedish army half its size. At Narva something similar happened (although weather and bad positioni... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3nwj4q/why_were_the_swedish_armies_in_the_17th_and_early/ | {
"a_id": [
"cvslo6z"
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"score": [
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"text": [
"There is a great previous answer here that should answer your question:\n[How Carolean army was set up and what made it work](_URL_0_)"
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/33bx3d/how_come_the_armies_of_karl_xii_was_able_to_win/cqjik77"
]
] | |
8sqhlk | Is Earth losing oxygen? | If we're pumping more and more co2 into the atmosphere and deforesting at a great rate, are we getting less and less oxygen produced, on a planetary scale? | askscience | https://www.reddit.com/r/askscience/comments/8sqhlk/is_earth_losing_oxygen/ | {
"a_id": [
"e137nbn"
],
"score": [
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"text": [
"Sort of. Most oxygen production on earth happens in the oceans (algae), so loss of forests, while impactful in many ways, isnt going to cause us to suffocate. Increase in CO2 does remove oxygen from the atmosphere through combustion, and we have ... | [] | [] | [
[]
] | |
fh5jjw | normal "system" memory versus graphics memory | What is the difference between the DDR 3, 4 or 5 you install as system memory and the GDDR 4, 5, 5X or 6 used in graphics cards? What makes each of them better for their respective applications? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fh5jjw/eli5_normal_system_memory_versus_graphics_memory/ | {
"a_id": [
"fk8zxul"
],
"score": [
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"text": [
"Graphics memory is designed for ludicrous throughput and custom applications. Graphics cards need access to massive memory bandwidth to do their job, a single 4K frame is ~25 MB and the GPU will be expected to generate at least 60 of them per se... | [] | [] | [
[]
] | |
8wir82 | Why did exotic exploration seem quite popular around the turn of the century? | Is there a name for this time period that started sometime in the 1800s and lasted until about the 40s, in which exploration of the world seemed to be quite notable?
Around this time there were many European colonies in Africa and Europeans made archaeological discoveries in Egypt. Teddy Roosevelt explored the Amazon,... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8wir82/why_did_exotic_exploration_seem_quite_popular/ | {
"a_id": [
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"text": [
"[1/2]\n\nUnlike the so-called \"Age of Exploration,\" this period doesn’t have a codified name, in part because I don’t think that it has as large a place in our popular narrative of \"history of Western civilization\" the way that earlier explor... | [] | [] | [
[]
] | |
1d2yrf | If photons are Massless bundles of concentrated electromagnetic energy, why is there an interaction with electrons and light? Why don't photons just pass straight through objects instead of reflecting off of them? | askscience | http://www.reddit.com/r/askscience/comments/1d2yrf/if_photons_are_massless_bundles_of_concentrated/ | {
"a_id": [
"c9mg3ad",
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"score": [
2,
2
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"text": [
"What holds human-size objects together is electromagnetic forces (electric, mostly) and quantum effects. It's not mass. Solid objects are solid due to molecular forces, which are electric in nature (built on a quantum scaffo... | [] | [] | [
[
"http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/photon_mass.html"
],
[]
] | ||
49hkaa | if you're not supposed to eat or drink before midnight before a surgery, what about emergency surgeries? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/49hkaa/eli5_if_youre_not_supposed_to_eat_or_drink_before/ | {
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"text": [
"In a regular surgery, the idea is to make the procedure as uncomplicated as possible, hence the restrictions.\n\nIn emergency surgery, the concern is keeping people alive. As such, there may be extra co... | [] | [] | [
[],
[],
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] | ||
15beye | Do black holes have "layers" of light around them? | Since the event horizon of black holes implies that light can be sucked into a black hole and not escape, is there a region around a black holes where it has rings/spheres/layers of light in orbit around them?
If so, then I guess that light hasn't past the event horizon, thus it might escape after a certain number of ... | askscience | http://www.reddit.com/r/askscience/comments/15beye/do_black_holes_have_layers_of_light_around_them/ | {
"a_id": [
"c7l0gx1"
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"score": [
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"text": [
"Yes. It is called the [photon sphere](_URL_0_) (two of them actually...see link). Basically this is an area where light orbits the black hole instead of falling in or flying away.\n\nHowever, it is a very precarious balance to get a photon to d... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Photon_sphere"
]
] | |
pypo0 | Why is nitrogen fixation evolutionarily beneficial? | We all know how important nitrogen fixation is in the nitrogen cycle. What I am interested in is what benefits the nitrogen fixing bacteria actually get from the whole process. It seems to be an extremely energy intensive process (~8 ATP per NH3) without a significant reward in terms of return on investment, other th... | askscience | http://www.reddit.com/r/askscience/comments/pypo0/why_is_nitrogen_fixation_evolutionarily_beneficial/ | {
"a_id": [
"c3tasnp"
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"score": [
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"text": [
"It's beneficial because it allows the organisms to survive in the absence of oxygen. In that case, they use nitrogen as the final electron acceptor (instead of O2). Keep in mind that the enzymes regulating nitrogen fixation are O2 sensitive, and ... | [] | [] | [
[]
] | |
eda6a0 | Has there been a higher peak than Mt. Everest on Earth throughout its history? | Im not thinking a higher mountain in total like the Mauna Kea, but rather from sea level upwards. | askscience | https://www.reddit.com/r/askscience/comments/eda6a0/has_there_been_a_higher_peak_than_mt_everest_on/ | {
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"text": [
"This is one of t... | [] | [] | [
[
"https://old.reddit.com/r/askscience/comments/bcl6g1/has_earth_had_a_bigger_mountain_than_mount_everest/",
"https://old.reddit.com/r/askscience/comments/bxt3n0/is_there_a_limit_to_the_height_a_mountain_can/",
"https://old.reddit.com/r/askscience/comments/2nhrro/how_high_can_the_earths_plates_be_pushed... | |
7jqvkr | Why and when did we start bombing civilians in World War II? | According to *The Official History of the Royal Air Force*, on the 4th of September 1940, Hitler said:
> The British drop their bombs indiscriminately and without plan on civilian residential quarters and on farms and villages. For three months I did not reply because I believed they would stop, but in this Mr Churc... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7jqvkr/why_and_when_did_we_start_bombing_civilians_in/ | {
"a_id": [
"dr8xtxu",
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"score": [
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"text": [
"No, that is not true. In the \"Weisung Nr. 17 für die Führung des Luft- und Seekrieges gegen England\" ^[1] from August 2, 1940 Hitler already ordered the Luftwaffe to prioritise the carpet bombing of cities over air-to-air... | [] | [
"https://www.reddit.com/r/AskHistorians/comments/7fukzv/great_escape_from_stalag_iiie/dqelb1s/"
] | [
[
"https://fz.ub.uni-freiburg.de/show/fz.cgi?cmd=showpic&ausgabe=03&day=11&year=1940&month=12&project=3&anzahl=12"
],
[
"http://www.bbc.co.uk/programmes/b01byv2g"
]
] | |
408xe5 | Was Ho Chi Minh Really A Tyrant? | I've been looking around a bit for information on the Vietnam war. It always seemed to me like the US government's offensive against Minh's regime was a bit of a knee jerk reaction. As Ho Chi Minh didn't seem nearly as volatile as say Mao or Stalin, was it out of fear for a regime like that, that the US stepped in or w... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/408xe5/was_ho_chi_minh_really_a_tyrant/ | {
"a_id": [
"cysrgod"
],
"score": [
18
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"text": [
"Ho Chi Minh is a difficult figure to analyze because he deliberately cultivated at least two different personalities. The first was of the kindly, elder nationalist and father to the nation. But he also was a committed communist internationalist... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Tr%C6%B0%E1%BB%9Dng_Chinh",
"http://2.bp.blogspot.com/-TTKl6xBDvLg/UJLUgNYHAII/AAAAAAAAC0I/vFsYw0bilvg/s1600/ruong+dat+013.jpg",
"https://en.wikipedia.org/wiki/Tr%E1%BA%A7n_Ph%C3%BA"
]
] | |
3yihsu | Why is the factorial of 1/2 equal to sqrt(Pi)/2 but the factorial of both 1 and 0 is equal to 1? | Does this have to do anything with the gamma function?
There are exactly sqrt(Pi)/2 ways to arrange 1/2 objects... yeah, I can't comprehend. | askscience | https://www.reddit.com/r/askscience/comments/3yihsu/why_is_the_factorial_of_12_equal_to_sqrtpi2_but/ | {
"a_id": [
"cydyht4"
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"score": [
19
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"text": [
"The way to extend a function from a smaller domain to a larger one is to find some kind of formula that has the function in it that, in some way, suggests what the function should be at values outside of it's original domain.\n\nLet's say that w... | [] | [] | [
[
"https://en.wikipedia.org/wiki/Prime_number_theorem",
"https://en.wikipedia.org/wiki/Volume_of_an_n-ball",
"https://en.wikipedia.org/wiki/Riemann_hypothesis",
"https://postformalism.wordpress.com/2015/03/24/why-are-there-factorials-in-the-taylor-series/"
]
] | |
du5eqr | Why does food lose some vitamins when baking or frying, compared to steaming or boiling? | [deleted] | askscience | https://www.reddit.com/r/askscience/comments/du5eqr/why_does_food_lose_some_vitamins_when_baking_or/ | {
"a_id": [
"f76qjbd"
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"score": [
3
],
"text": [
"When you expose things to heat, things change in them. You have seen this before--imagine you have a pumpkin. It's pretty hard--if you put it in boiling water for a while, it will get softer, will change color, and will change flavor. This is bec... | [] | [] | [
[]
] | |
708u85 | what is happening in the brain when you are not paying attention to someone saying something and you hear what they said inside your head some minutes after they've said it? | This happens usually when I am engrossed with something else and not attentive to what someone said. It echoes in my head some time later and initially it is difficult to perceive that it was said some time before, and feels like it is happening now. Why does this happen? And how does this process work inside the brain... | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/708u85/eli5_what_is_happening_in_the_brain_when_you_are/ | {
"a_id": [
"dn2d512"
],
"score": [
5
],
"text": [
"There are different levels of consciousness layered on top of each other that make up your reality. Some you are very aware of/in control of, others are kind of like \"auto pilots\" that let you do stuff like drive a car without really thinking a... | [] | [] | [
[]
] | |
c7zmgx | Why didn't Abrahmic religions gain as much ground in Japan as in Korea did during the 1900s? | Also, why was Buddhism, despite being a foreign religion, gain much more ground in Japan? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/c7zmgx/why_didnt_abrahmic_religions_gain_as_much_ground/ | {
"a_id": [
"esknoxp"
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"score": [
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"text": [
"Short answer: Buddhism was indigenized in Japan by the 1900s, with a history extending back *centuries* and so was only a \"foreign\" religion by a technicality, but not in any practical term. That said, Buddhism in Japanese society had a very *v... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/ajfgjd/how_come_japan_was_able_to_achieve_high/eexhiq5/"
]
] | |
4zozmt | What did it really mean to be released from a Gulag? Where would one be "dropped off" after serving their time in a camp? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4zozmt/what_did_it_really_mean_to_be_released_from_a/ | {
"a_id": [
"d6y647p",
"d6y8u9p"
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"score": [
100,
13
],
"text": [
"The gulag was a massive system over a large period of time, so it's difficult to talk about it just as one thing. In fact, it was incredibly variable - that might have been its most defining feature in the end. So let's l... | [] | [] | [
[],
[]
] | ||
449m7b | Did Protestants, after the Reformation, use large-scale violence to convert differing groups in a manner similar to The Crusades? | I don't mean as a part of a whole, let's say in converting Native Americans, unless they had a widespread plan to do so. Because I seem to have read that many types of people came to America from all over Europe with many differing beliefs, or even no beliefs. So instead, I'm wondering if Protestant Christians committe... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/449m7b/did_protestants_after_the_reformation_use/ | {
"a_id": [
"czou772"
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"score": [
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"text": [
"A reply to /u/teaandabook \n\nI'm not sure the context of your question. Are you aware of the religious wars in France and Germany, also known as the Thirty Years' War, that saw widespread destruction and violence by all sides of the conflict? Or... | [] | [] | [
[]
] | |
w26ki | the difference between a thc pill and smoking marijuana for medicinal purposes. | Is THC the only active ingredient in pot that helps? Wouldn't a pill be easier to take?
Do they work differently?
Etc general questions. Mainly the controversy over smoking pot. If you can take it in a pill why would smoking (bad for lungs) be an option?
Sorry this is worded poorly. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/w26ki/eli5_the_difference_between_a_thc_pill_and/ | {
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"text": [
"There IS a drug on the market (Dronabinol) that contains the main THC in marijuana. However marijuana has a lot more cannabinoids (the class of substances that THC belongs to) and ... | [] | [] | [
[],
[],
[],
[]
] | |
4kjx31 | Is it possible to know what color a material will be without actually seeing it? | If so, what details would you need to know? | askscience | https://www.reddit.com/r/askscience/comments/4kjx31/is_it_possible_to_know_what_color_a_material_will/ | {
"a_id": [
"d3fndxc",
"d3g35rv"
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"score": [
12,
3
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"text": [
"Yes. Color is determined by the band gap of materials. Band gaps between 3-5 eV correspond to visible light (color). We can roughly calculate these electronic levels for a given material computationally (though imprecise... | [] | [] | [
[
"https://www.researchgate.net/post/What_is_the_relationship_between_a_material_color_and_its_band-gap_How_can_we_estimate_the_band-gap_by_color"
],
[
"http://www.sciencebuzz.org/sites/default/files/images/blue_morpho_microrib_nise.jpg"
]
] | |
3ai835 | How "French" were the Franks? (plus some bonus questions) | You have several Frankish figures with names like Clovis, founder of the Merovingian Kingdom; Charles aka Charlemagne, founder of the Carolingian Empire; and Louis, son of Charlemagne and King of Aquitaine. And then you have figures with more Germanic names like Childeric, Frankish king and father of Clovis; and sons o... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3ai835/how_french_were_the_franks_plus_some_bonus/ | {
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"score": [
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3,
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"text": [
"I can't answer your question because I don't know enough about the time period, but I did want to address your use of names as evidenc... | [] | [] | [
[],
[
"http://www.reddit.com/r/AskHistorians/wiki/language#wiki_frankish_and_french"
],
[
"https://slmc.uottawa.ca/?q=french_history"
],
[
"http://fmg.ac/Projects/MedLands/MEROVINGIANS.htm"
],
[
"http://www.britannica.com/topic/Suebi",
"http://www.britannica.com/topic/Vulgar-Latin"... | |
abj0jz | how are broken bones in non-castable areas fixed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/abj0jz/eli5_how_are_broken_bones_in_noncastable_areas/ | {
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"text": [
"The cast is mostly to prevent further damage. It is not strictly necessary but is more comfortable. It is possible to cast a larger area in order to protect the fracture site from ... | [] | [] | [
[],
[],
[],
[]
] | ||
2m7dap | Why is Cyprus not part of Greece? | I understand Cyprus gained independence some time after Greece did. Most of the Cypriot population is Greek-speaking and is ethnically Greek. Why did it become a separate state? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2m7dap/why_is_cyprus_not_part_of_greece/ | {
"a_id": [
"cm2chf8"
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"text": [
"Greece was under Ottoman control and revolted in the 1830s while Cyprus was under British control and gained independence from them in the 1960s. Cyprus maintained its independence but there were those that wanted it to be apart of Greece, both i... | [] | [] | [
[]
] | |
fztgox | why your feet tingle after you almost slip or sometimes when something slips from your hand | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fztgox/eli5_why_your_feet_tingle_after_you_almost_slip/ | {
"a_id": [
"fn60m5p"
],
"score": [
2
],
"text": [
"It's a small spike of adrenaline. When you're about to slip or drop something, your adrenal glands start pumping in case you need to respond quickly with power, strength, or heightened reflexes."
]
} | [] | [] | [
[]
] | ||
45g6by | most americans i've met are very smart, sensible people who generally seem to have been educated far better than i; how is it that there's such a prevalent cultural stereotype of the dumb american? | Mainly I wonder where this notion stemmed from. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/45g6by/eli5_most_americans_ive_met_are_very_smart/ | {
"a_id": [
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"score": [
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"text": [
"In the same vain that \"the squeaky wheel gets the grease\", our dumbest are generally are ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | |
cf89tq | how the hell do deep fakes work? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cf89tq/eli5_how_the_hell_do_deep_fakes_work/ | {
"a_id": [
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"score": [
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"text": [
"Without going into the details of that actual technology - Computers have advanced to the point where we can create very realistic lo... | [] | [] | [
[],
[],
[],
[],
[],
[]
] | ||
11lz0j | why do people say we aren't recovering from the recession? | I know that the DOW isn't the only marker for how the economy is performing, but isn't it a strong indicator? This is a chart of the stock market over the last 5 years.
_URL_0_; | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/11lz0j/eli5_why_do_people_say_we_arent_recovering_from/ | {
"a_id": [
"c6nmfgt",
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"score": [
2,
3
],
"text": [
"There are still no jobs. The health of the stock market means absolutely nothing to people who have no jobs.",
"I don't think anybody says the economy *isn't recovering.* At least, I don't think anybody *seriously* says ... | [] | [
"http://finance.yahoo.com/echarts?s=%5Edji+interactive#symbol=%5Edji;range=5y;compare=;indicator=volume;charttype=area;crosshair=on;ohlcvalues=0;logscale=off;source=undefined"
] | [
[],
[]
] | |
1uevra | Is the reach of gravity infinite? | I was told that everything attracts everything else and that though gravity drops off exponentially with distance the connection between objects is still there. Does this mean that, in a universe that was not expanding and had nothing in it aside from two hydrogen atoms many millions of light years apart, that given en... | askscience | http://www.reddit.com/r/askscience/comments/1uevra/is_the_reach_of_gravity_infinite/ | {
"a_id": [
"cehm9qf"
],
"score": [
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],
"text": [
"I just wanted to drop by with some numbers. If you had an empty and infinite universe and placed two hydrogen atoms one million light years apart, a nonrelativistic calculation says that they will collide in 7*10^43 years. That's a 7 followed by ... | [] | [] | [
[]
] | |
viinf | A question about optics.... | Today me and my dad were at Walmart, inside this Walmart was fluorescent lighting and a girl in a very dainty skirt. My dad put on his polarized sunglasses clip for his glasses and suddenly he looked at the girl and behold! He could see her thong through the skirt. He took his clip off and he couldn't see through it an... | askscience | http://www.reddit.com/r/askscience/comments/viinf/a_question_about_optics/ | {
"a_id": [
"c551qam"
],
"score": [
4
],
"text": [
"If this indeed happened then the only reasonable explanation I can think of is that it was a semi-transparent skirt to begin with and looked more opaque due to [ polarized specular reflections. ](_URL_0_) When his glasses partially filtered out t... | [] | [] | [
[
"http://en.m.wikipedia.org/wiki/Polarization_\\(waves\\)#section_2"
]
] | |
4z9jyg | Why are significant figures so stressed in chemistry, yet unimportant in physics? | askscience | https://www.reddit.com/r/askscience/comments/4z9jyg/why_are_significant_figures_so_stressed_in/ | {
"a_id": [
"d6uf7gk"
],
"score": [
28
],
"text": [
"I'm not sure where you've heard that significant figures are not important in physics, but that's absolutely not true. Significant figures are important in every field of science that works with measurements and experimental data.\n\nMany mathem... | [] | [] | [
[]
] | ||
15x5mz | my co-pay is $20, but without insurance it's thousands of dollars. how does the insurance company make any money? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/15x5mz/eli5_my_copay_is_20_but_without_insurance_its/ | {
"a_id": [
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"score": [
6,
2
],
"text": [
"In part, because the insurance company doesn't actually pay that \"uninsured rate\": because they are a huge customer, they negotiate much better rates for the drugs/services. You will never see what they pay: they get an in... | [] | [] | [
[],
[]
] | ||
5bfkym | why do we sweat and tear up when we vomit? | Unfortunately experienced this moments ago and my interest was piqued. Why do we tear up and sweat when we vomit? Also where does the fatigue come from? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5bfkym/eli5_why_do_we_sweat_and_tear_up_when_we_vomit/ | {
"a_id": [
"d9o4pn1",
"d9o9yjs"
],
"score": [
3,
3
],
"text": [
"When you vomit you are emptying your stomach. It is surrounded by large and strong muscle fibers that are responsible for \"chewing\" the food using your stomach walls as \"teeth\". Vomiting implies those muscle fibers to su... | [] | [] | [
[],
[]
] | |
10q6c5 | What has to happen to grapes(or any fruit for that matter) for them to become seedless? | I'll ask the same thing about oranges and apples, what happens to the seeds? | askscience | http://www.reddit.com/r/askscience/comments/10q6c5/what_has_to_happen_to_grapesor_any_fruit_for_that/ | {
"a_id": [
"c6frywm",
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"score": [
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],
"text": [
"I'm a horticulturist that specializes in food, but I'm only on my phone and many of my sources are books that I have. However, I hope someone can help me verify what I'm about to talk about and tell me if I have something wr... | [] | [] | [
[],
[]
] | |
1dy9fm | Why is the Byzantine Empire purple? | Video games? Purple.
_URL_1_
Historical maps? Purple.
_URL_2_
Contrasts to the the Western Roman Empire? Purple.
_URL_0_
Why is the Eastern Roman/Byzantine Empire so frequently associated with purple/purpleish hues? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1dy9fm/why_is_the_byzantine_empire_purple/ | {
"a_id": [
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"score": [
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"text": [
"The real question, in my eyes, is \"Why did the Romans like purple so much?\"\n\nJust ctrl+F this article for \"purple\"\n_URL_0_\n\nPurple had a \"regal\" [sic] context to it ev... | [] | [
"http://www.whitsend.org/en/ImaginationStation/Books/AttackAtTheArena/~/media/Images/ImaginationStation/InfoImages-Attack/empire.ashx?w=563&h=406&as=1",
"https://lh3.ggpht.com/-PqrtXbIVx7w/UK-yv-yKVDI/AAAAAAAABes/GtpJ7qNrWyc/s1600/cv-0.53.png",
"https://upload.wikimedia.org/wikipedia/commons/9/9b/Justin... | [
[
"http://en.wikipedia.org/wiki/Toga",
"http://en.wikipedia.org/wiki/Tyrian_purple"
],
[],
[],
[]
] | |
2p0xbt | how can there be updates on disc games? | Like, it's a physical disc. How do they make updates and apply them to the games? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2p0xbt/eli5_how_can_there_be_updates_on_disc_games/ | {
"a_id": [
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"text": [
"They store the updates on the hard drive. All files have to be loaded into RAM before they're used anyway. When the game goes to load a file, it checks the hard drive to see if there's an updated version. It doesn't actually update the disk."
]... | [] | [] | [
[]
] | |
10onro | Were any of the U.S. founding fathers alive during The American Civil War? If so what did they think about it? Or did they speak/write publicly about it at all? | I realize not many, if any, of them were left, since it had been almost 100 years since the signing of the Declaration of Independence, but I imagine there had to be at least a few.
Were there any prominent anti Federalists left? What did they think about the civil war? Were there any that spoke up that were not doin... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/10onro/were_any_of_the_us_founding_fathers_alive_during/ | {
"a_id": [
"c6f9wek",
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"score": [
10,
3
],
"text": [
"None were alive. By greatly stretching the definition of founding father, you can get to 1848 with JQA. But Generally Madison, Marshall and one other guy who can't recall at the moment are considered the last living founder... | [] | [] | [
[],
[]
] | |
2thm3o | why do polar bears live at the northern pole and penguins at the southern? | Is it to do to breeding? Weather patterns? Nature? With this in mind, would Polar bears survive in Antartica? Would Penguins at the North Pole? What really is keeping them from swapping places other than being at separate sides of the planet?
Sorry if a repost, I only have my phone and can't really search too well. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2thm3o/eli5_why_do_polar_bears_live_at_the_northern_pole/ | {
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"text": [
"I'd assume they could survive in either places. But neither animal would travel the length of the globe without human assistance. And they exist in those places for the same reason... | [] | [] | [
[],
[],
[],
[]
] | |
fqkrm6 | what are they doing in those numbered free mason lodges? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fqkrm6/eli5_what_are_they_doing_in_those_numbered_free/ | {
"a_id": [
"flqsdl3",
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"score": [
3,
2,
2
],
"text": [
"Networking, it's mostly small business owners being part of a fraternity. They help each other out and also do a lot of charity work. They are secretive, but that's just part of being a brotherhood. The... | [] | [] | [
[],
[],
[]
] | ||
6pks7y | king solomon and his temple | I've never been able to find anything online that states exactly what was reported to be under his temple, who he was and what he did.
All religious debate aside, why are people still fixated on a conspiracy theory? What exactly is that theory? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6pks7y/eli5_king_solomon_and_his_temple/ | {
"a_id": [
"dkqbvmh"
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"score": [
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"text": [
"According to the Bible, Solomon was the son of King David, and the third ruler of the Kingdom of Israel. He is supposed to have been the one who commissioned the construction of the Holy Temple in Jerusalem, which became the place of worship for ... | [] | [] | [
[]
] | |
e5khlo | I have heard plenty of times that the communist system in the Soviet Union is not what Karl Marx intended. | How far away was the communism in the Soviet Union actually from what Marx actually described as communism and what were the main differences? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/e5khlo/i_have_heard_plenty_of_times_that_the_communist/ | {
"a_id": [
"f9l3iyb"
],
"score": [
58
],
"text": [
"It was quite far away, for a multitude of reasons. There are many different factors, but this is a very broad summary of why the Soviet Union was never “real” communism.\n\nFirst off, the communism Marx intended for was mainly for advanced indus... | [] | [] | [
[]
] | |
1qm5o1 | with all of our technological advancements, why haven't we been able to recover the titanic yet? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1qm5o1/with_all_of_our_technological_advancements_why/ | {
"a_id": [
"cde5z05",
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2,
3
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"text": [
"It is possible, but to what ends and who would finance it. It would be outrageously expensive and they would be bringing up nothing but nearly rotten metal. But it can be done, check this [link](_URL_... | [] | [] | [
[
"http://www.pbs.org/saf/1305/features/ship2.htm"
],
[],
[]
] | ||
57mzju | is it possible to convert ocean (salt) water into drinking water? or is there some inherent property preventing this? | I was reading a-lot lately about the droughts in California and the predicted droughts to happen across the globe and wondered why we haven't figured out how to make salt water drinkable... Is it simply a lack of efficient processes? Funding? or some other factor? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/57mzju/eli5is_it_possible_to_convert_ocean_salt_water/ | {
"a_id": [
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6
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"text": [
"Generally, the basic concept is evaporating the water (which leaves the salt behind) and re-condensing it into purified water. The big drawback is that this takes a lot of energy, so it usually makes it more expensive than ... | [] | [] | [
[],
[]
] | |
1ew8p9 | Has there ever been an event similar to the Arab spring? | I'm not really talking simply about the actions of the people. After all civil wars happen all the time, and revolutions are fairly common through history. I'm talking more about the mentality and goals of the people coupled with their actions. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1ew8p9/has_there_ever_been_an_event_similar_to_the_arab/ | {
"a_id": [
"ca4ei5r",
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"score": [
6,
28
],
"text": [
"The term 'Arab Spring' in itself is a call back to the 1848 Springtime of Nations, when a wave of revolutions beginning in France spread across all of Europe. Unfortunately I can't give you any information beyond that and s... | [] | [] | [
[],
[
"http://en.wikipedia.org/wiki/Enlightened_absolutism",
"http://en.wikipedia.org/wiki/Revolutions_of_1848"
]
] | |
lnyj5 | why do people still vouch for supply-side economics? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/lnyj5/eli5_why_do_people_still_vouch_for_supplyside/ | {
"a_id": [
"c2u817w",
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"score": [
3,
3
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"text": [
"This is an answer I gave this in r/asksocialscience about a month ago _URL_0_",
"This is an answer I gave this in r/asksocialscience about a month ago _URL_0_"
]
} | [] | [] | [
[
"http://www.reddit.com/r/AskSocialScience/comments/kq4jb/a_question_regarding_the_viability_of_trickle/"
],
[
"http://www.reddit.com/r/AskSocialScience/comments/kq4jb/a_question_regarding_the_viability_of_trickle/"
]
] | ||
fgx0ft | Do satellites maintain the same velocity forever? | Today in my physics class we talked about the gravitational field and about the elliptical orbit of satellites. My question now is if the satellite would continue to be accelerated and slowed down by the gravitational field of the earth forever? And if so wouldn‘t that mean that no energy is converted (for example in h... | askscience | https://www.reddit.com/r/askscience/comments/fgx0ft/do_satellites_maintain_the_same_velocity_forever/ | {
"a_id": [
"fk7f7la"
],
"score": [
31
],
"text": [
"I'm going to answer your question, but just because somebody will \"correct\" me if I don't touch on it first: in an elliptical orbit, the velocity does change, because the speed and direction of the satellite's motion is changing throughout the... | [] | [] | [
[]
] | |
p4mwt | What is the trick to making a Rupert's drop? | I understand the basic technique and the science behind making a Rupert's drop but I can't seem to duplicate the results. Does anyone know the trick to making one?
_URL_0_ | askscience | http://www.reddit.com/r/askscience/comments/p4mwt/what_is_the_trick_to_making_a_ruperts_drop/ | {
"a_id": [
"c3mhfk6"
],
"score": [
2
],
"text": [
"When I did it in my materials science lab as an undergrad we used a bunsen burner to melt glass stirring rods and let it drop into a bucket of ice water. How are you doing it?"
]
} | [] | [
"http://en.wikipedia.org/wiki/Prince_Rupert's_Drop"
] | [
[]
] | |
brb4t7 | how do all these different fruit and plant seeds form? | Where did the first apple seed or orange seed come from? Googling it doesn't come up with a straightforward answer. I'm assuming that just like the What came first he chicken or egg debate, the seed came first however, where did that first seed originate from? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/brb4t7/eli5_how_do_all_these_different_fruit_and_plant/ | {
"a_id": [
"eoc14lr"
],
"score": [
4
],
"text": [
"There wasn't an identifiable first apple or orange seed. They would have evolved from some preceding plant species slowly over time. So over thousands of generations the preceding plant becomes more and more like an apple or orange tree until eve... | [] | [] | [
[]
] | |
4xxrsj | What significance did the shape of the bomb dropped in Nagasaki have? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4xxrsj/what_significance_did_the_shape_of_the_bomb/ | {
"a_id": [
"d6jt7hh"
],
"score": [
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"text": [
"The \"active\" part of the Nagasaki bomb was an immensely heavy egg-shaped collection of high explosives, uranium metal, a plutonium core, and a lot of complicated electronics. The casing was developed to hold all that together and keep it from r... | [] | [] | [
[
"https://twitter.com/wellerstein/status/575051061020463106",
"http://unmakingthebomb.com/visible-bomb/"
]
] | ||
erfec8 | how is that alcohol 70% is better than alcohol 90% as disinfectant ? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/erfec8/eli5_how_is_that_alcohol_70_is_better_than/ | {
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"ff46w04",
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"ff4mtk1",
"ff4qtjj",
"ff5rz19"
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"score": [
18166,
3,
363,
3,
27,
2,
... | [] | [] | [
[
"https://www.cdc.gov/infectioncontrol/guidelines/disinfection/disinfection-methods/chemical.html",
"https://www.sciencedirect.com/science/article/pii/0195670183900257",
"https://blog.gotopac.com/2017/05/15/why-is-70-isopropyl-alcohol-ipa-a-better-disinfectant-than-99-isopropanol-and-what-is-ipa-used-f... | ||
4d7sa0 | Why is mathematics so applicable to all the phenomena we can observe and describe in the universe? | Everything can be explained mathematically. Why? | askscience | https://www.reddit.com/r/askscience/comments/4d7sa0/why_is_mathematics_so_applicable_to_all_the/ | {
"a_id": [
"d1ojsds",
"d1ol3ix",
"d1p3o8c"
],
"score": [
32,
6,
2
],
"text": [
"Why is painting so good at reproducing the way the universe looks? Because we invented painting in order to be good at reproducing the way the universe works. Why is math so good at describing the thin... | [] | [] | [
[
"https://www.reddit.com/r/askscience/comments/4cwyl2/how_do_we_know_if_numbers_that_cant_be_seen_in/d1m7ai2"
],
[
"https://en.wikipedia.org/wiki/The_Unreasonable_Effectiveness_of_Mathematics_in_the_Natural_Sciences"
],
[]
] | |
5hc3og | please explain how the current wage gap in america works. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5hc3og/eli5_please_explain_how_the_current_wage_gap_in/ | {
"a_id": [
"daz2bz2"
],
"score": [
3
],
"text": [
"There is no wage gap. At least not in how you likely think. \n\nThe 75% number often thrown around for women is based on all jobs for women averaged and compared to all jobs for men averaged. That gives you false information. Men hold a larger pe... | [] | [] | [
[]
] | ||
1l2xh0 | I heard that diamonds do not show up on x-rays. Is this true and if so, why? | askscience | http://www.reddit.com/r/askscience/comments/1l2xh0/i_heard_that_diamonds_do_not_show_up_on_xrays_is/ | {
"a_id": [
"cbv8y6x"
],
"score": [
9
],
"text": [
"All matter absorbs X-rays depending on the atomic density: the higher the density, and the heavier the element, the more X-rays are absorbed. Since carbon is about as lightweight an element as you can get, X-rays can pass through diamonds without... | [] | [] | [
[]
] | ||
5wwq9m | Did Napoleon and Wellington ever meet face-to-face? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5wwq9m/did_napoleon_and_wellington_ever_meet_facetoface/ | {
"a_id": [
"deee2i6"
],
"score": [
7
],
"text": [
"No they never met face to face. Though they faced each across the battlefield at Waterloo Napoleon fled for Paris after his defeat and eventually surrendered to the British at Rochefort. At no time despite his captivity in British custody did he ... | [] | [] | [
[]
] |
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