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 |
|---|---|---|---|---|---|---|---|---|---|
6gb1yx | why when you miss somebody can you physically feel it in your chest? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6gb1yx/eli5_why_when_you_miss_somebody_can_you/ | {
"a_id": [
"diow2cm"
],
"score": [
2
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"text": [
"It's called *heartache.*\n\n_URL_2_\n\n_URL_0_\n\n_URL_4_\n\n_URL_5_\n\n_URL_3_\n\n_URL_1_"
]
} | [] | [] | [
[
"https://www.reddit.com/r/explainlikeimfive/comments/64b0ev/eli5_why_do_we_get_heartaches_when_feeling_sad/dg0zyg7/",
"https://www.reddit.com/r/explainlikeimfive/comments/1wgxk5/why_does_my_heart_actually_feel_heartbroken_or/",
"https://www.reddit.com/r/explainlikeimfive/comments/3noj6u/eli5_what_is_t... | ||
cslkaz | why plants don’t suffer negative effects from inbreeding | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/cslkaz/eli5_why_plants_dont_suffer_negative_effects_from/ | {
"a_id": [
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"score": [
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"text": [
"There are issues with inbreeding plants. A major issue is that they will all be susceptible to the same diseases. Bananas are all clones, and if there's a particular disease that develops, it could wipe out all of the banana... | [] | [] | [
[],
[]
] | ||
7z423o | Did the early 15th century in the Kingdom of Bohemia feature multiple races, religions, etc.? | [deleted] | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7z423o/did_the_early_15th_century_in_the_kingdom_of/ | {
"a_id": [
"dul7e5k"
],
"score": [
3
],
"text": [
"This question has been answered time and time again in the last few weeks: \n_URL_4_ \n_URL_0_ \n_URL_3_ \n_URL_2_ \n_URL_5_ \n_URL_1_"
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/7v1lil/people_are_getting_extremely_upset_because_there/",
"https://www.reddit.com/r/AskHistorians/comments/7rkol0/the_video_game_kingdom_come_deliverance_recently/",
"https://www.reddit.com/r/AskHistorians/comments/4ipxz3/is_it_plausible_for_moors_or_o... | |
4f5eci | are the 7+ magnitude earthquakes in japan and ecuador related? | Seems strange to have multiple 7+ magnitude earthquakes hit a city in each hemisphere within a week. Are these events related? Are the earthquakes in Ecuador a result of the earthquakes in Japan? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4f5eci/eli5_are_the_7_magnitude_earthquakes_in_japan_and/ | {
"a_id": [
"d2626ii"
],
"score": [
2
],
"text": [
"Earthquakes happen pretty frequently, far more frequently than most people realize. Most of them are very small and don't catch much attention, though anyone of them could turn out to be damaging. That's the thing about Earthquakes they can be ... | [] | [] | [
[]
] | |
3cs4wk | why after shaving do i get pimples? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3cs4wk/eli5_why_after_shaving_do_i_get_pimples/ | {
"a_id": [
"csyf8pq",
"csyl4we",
"csyllob"
],
"score": [
14,
3,
3
],
"text": [
"Small nicks or cuts on your skin get infected. Hairs once cut smooth to the skin have a chance of becoming ingrown and infected. And you can sometimes push dirt and bacteria into a pore causing it to b... | [] | [] | [
[],
[],
[]
] | ||
1qwe5h | how are commercials cost-effective to a company? has anyone ever seen a comercial and thought, "wow! i'm going to go buy that." | I'm thinking about Superbowl ads...millions of dollars for 30 seconds of glory. Do companies just have an absurd amount of money to spend? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1qwe5h/eli5_how_are_commercials_costeffective_to_a/ | {
"a_id": [
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"score": [
27,
20,
4,
4,
3,
5,
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],
"text": [
"It's not about pushing units.\n\nWell it is... but not always. Commercials and marketing have a lot to do with ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[]
] | |
7ntefk | Why do cities in the US advertise their population size on their signs? What purpose does or did it serve? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7ntefk/why_do_cities_in_the_us_advertise_their/ | {
"a_id": [
"ds5nfso"
],
"score": [
13
],
"text": [
"Old thread, but not too much in there. u/MrDowntown gave an answer but it's unsourced. \n\n_URL_0_\n"
]
} | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/3dk7tr/why_are_population_numbers_generally_listed_on/"
]
] | ||
hvnbo | If I was in space could I lift a 5000 lb. weight? | Let's say I was strapped to the outside of a space shuttle holding me in place but not orbiting earth, say I was just in dead space. Would I be able to push/pull a 5000 lb weight? | askscience | http://www.reddit.com/r/askscience/comments/hvnbo/if_i_was_in_space_could_i_lift_a_5000_lb_weight/ | {
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"text": [
" > Would I be able to push/pull a 5000 lb weight?\n\nYes. The 5000 lb mass would not have any appreciable weight (since weight is a function of gravity).\n... | [] | [] | [
[],
[],
[],
[],
[]
] | |
1fu30o | Best sources for book reviews, circa 1950s? | I'm looking for book reviews for a book published in 1953 (Seduction of the Innocent, by Frederic Wertham), and need a good place to start, besides a simple google search. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1fu30o/best_sources_for_book_reviews_circa_1950s/ | {
"a_id": [
"cadwb1p"
],
"score": [
2
],
"text": [
"For academic social science or humanities book reviews, I would suggest [Jstor](_URL_1_). If you don't have access yourself, find someone who attends or teaches at a university, and who is willing to make a few searches for you.\n\nFor non-academ... | [] | [] | [
[
"http://www.gale.cengage.com/BRIOnline/quick.htm",
"http://www.jstor.org/"
]
] | |
113urm | Will the rising sea-levels pose a risk to the major countries of the world? | Hearing about that one island nation's (the name escapes me) plan for mass evacuation due to the rising oceans made me think about this. Will places like the United Kingdom, Madagascar, the nations in the Carribean, etc. face any major issues from the rising water? | askscience | http://www.reddit.com/r/askscience/comments/113urm/will_the_rising_sealevels_pose_a_risk_to_the/ | {
"a_id": [
"c6j35fp",
"c6j6wmd",
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],
"score": [
15,
2,
2
],
"text": [
"Yes many places will experience severe problems due to the rise in sea level. A good place to start are the IPCC reports.\n\n[A chapter on coastal systems and low-lying areas](_URL_0_)\n\n[A chapter on... | [] | [] | [
[
"http://www.ipcc.ch/publications_and_data/ar4/wg2/en/ch6.html",
"http://www.skepticalscience.com/sea-level-rise.htm",
"http://en.wikipedia.org/wiki/Louisiana#Climate",
"http://www.bbc.co.uk/learningzone/clips/rising-sea-levels-in-the-maldives/3192.html",
"http://en.wikipedia.org/wiki/Current_s... | |
bz0jav | how do things like marijuana and alcohol get consumed through the mouth/stomach/lungs and then have an affect on the brain? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bz0jav/eli5_how_do_things_like_marijuana_and_alcohol_get/ | {
"a_id": [
"eqodmaa"
],
"score": [
3
],
"text": [
"When you inhale, most of the stuff you're inhaling goes right into your blood. That's what the lungs are for, getting oxygen from the outside into your blood.\n\n & #x200B;\n\nSame with the digestive system. Your blood is what delivers nutrient... | [] | [] | [
[]
] | |
1kn576 | engine torque | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1kn576/eli5_engine_torque/ | {
"a_id": [
"cbqmrc5",
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"score": [
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"text": [
"Torque is a measure of how much force you apply to cause something to twist/rotate. So when you use a screwdiver, or open a bottle of soda, you're applying torque to the screw or bottlecap respectively.\n\nAn engine's torque... | [] | [] | [
[],
[]
] | ||
830ic2 | when we close our eyes do we actually see the color black or do we see something different that our brain is telling us is the color black but it's not? what's our brain telling our eyes to see when we close them? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/830ic2/eli5_when_we_close_our_eyes_do_we_actually_see/ | {
"a_id": [
"dve5wua",
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"score": [
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"text": [
"Any \"color\" you see is ultimately your brain's interpretation of the signals is receiving from the eyes, which itself is formulated based on the cells that are stimulated by the light striking them. When you close your eye... | [] | [] | [
[],
[]
] | ||
33axco | why does it seem like nascar is for red necks but formula1 is a high class sport? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33axco/eli5_why_does_it_seem_like_nascar_is_for_red/ | {
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"cqj5lel",
"cqj5ole",
"cqj6jqi"
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"score": [
2,
6,
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7
],
"text": [
"Because F1 is European. They don't have rednecks in Europe. That makes all the difference.",
"It's how the two evolved that is the key here. NASCAR grew out of stock car/dra... | [] | [] | [
[],
[],
[
"http://www.forbes.com/sites/steveodland/2012/02/27/nascars-back/"
],
[]
] | ||
bis3cg | on products like sodas or snacks it states something along the lines of “not for resale” or “not to be sold individually”. how do things like concession stands get away with this? | I could be misunderstanding the intentions of what this means but my current understanding is that you can’t buy this box of candy and resale them individually. If someone could educate me on this & what the label actually means that would be great | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bis3cg/eli5_on_products_like_sodas_or_snacks_it_states/ | {
"a_id": [
"em2m0eh",
"em2m1es",
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"score": [
3,
13,
6
],
"text": [
"Don't quote me on this, but this label is put on products by manufacturers who want to sell items in bulk (chips, sodas, etc.) It prevents retailers from opening up the bulk packaging and selling items... | [] | [] | [
[],
[],
[]
] | |
3gdxqr | Why exactly does the conflict in South Ossetia occure? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3gdxqr/why_exactly_does_the_conflict_in_south_ossetia/ | {
"a_id": [
"ctxc6yl"
],
"score": [
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"text": [
"We have a 20 years rule, so ask historians can only help you with the least controversial parts of it. \n\nZviad Gamsakhurdia (a jailbird dissident nationalist akin to the American black panthers) won the first multi-party elections in Georgia in... | [] | [] | [
[]
] | ||
4ftmrf | Can someone tell me about the government of Weimar Germany? | My professor said that the individual cabinet ministers were elected, instead of appointed. How was this carried out in practice? Were they elected by national elections? Was this a good system? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4ftmrf/can_someone_tell_me_about_the_government_of/ | {
"a_id": [
"d2bvzn8"
],
"score": [
2
],
"text": [
"I am curious to know what the context of this statement was. The Reichschancellor was the one responsible for appointing the cabinet. The constitution of the Weimar Republic for most intents and purposes was essentially the exact same one as th... | [] | [] | [
[]
] | |
2rvmbw | Is the acceleration of the universe's expansion a constant? or is it changing with respect to time? | askscience | http://www.reddit.com/r/askscience/comments/2rvmbw/is_the_acceleration_of_the_universes_expansion_a/ | {
"a_id": [
"cnjt965",
"cnk46c4"
],
"score": [
12,
2
],
"text": [
"The Hubble parameter, which gives information about the rate of the expansion of space as a function of distance, is not constant. Its time dependence is given by the [Friedmann equations](_URL_0_). \n\nThe reason the Hubbl... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Friedmann_equations"
],
[
"https://www.youtube.com/playlist?list=PLUl4u3cNGP61Bf9I0WDDriuDqEnywoxra"
]
] | ||
1t7vtd | how does the it department handle which sites to block in a corporate environment? (more in comments) | Hi all,
I recently landed a job working in a corporate environment, financial industry. Kind of like Office Space, bunch of cubicles everywhere. Anyways I was able to visit reddit all of last week (couldn't load pictures but the comments were okay) but when I came in on Monday this week it was blocked. Could someone p... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1t7vtd/eli5_how_does_the_it_department_handle_which/ | {
"a_id": [
"ce58i5c"
],
"score": [
2
],
"text": [
"Monitor traffic. Anything not work related, block."
]
} | [] | [] | [
[]
] | |
7pbk2n | Here in Norway, we eat bread for every meal except for dinner, the only hot meal of the day. I also know that it is different in other cultures, so when and how did this divide happen? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7pbk2n/here_in_norway_we_eat_bread_for_every_meal_except/ | {
"a_id": [
"dsgzz3a",
"dshd0cx"
],
"score": [
10,
2
],
"text": [
"You might want to try r/askfoodhistorians\n",
"I’m sorry but may I ask you to clarify what you’re asking. Are you asking why Norwegians only have one hot meal a day or why they don’t eat bread with that hot meal?\n\nEdi... | [] | [] | [
[],
[]
] | ||
24jdzz | Does bread lose any nutritional value (vitamins, calories, etc) when it goes stale? | askscience | http://www.reddit.com/r/askscience/comments/24jdzz/does_bread_lose_any_nutritional_value_vitamins/ | {
"a_id": [
"ch7t7ge"
],
"score": [
3
],
"text": [
"I wouldn't assume so. Staleness is due to crystallization of starch molecules (which is why you should never leave bread in the fridge), and as such shouldn't have an impact on nutritional content."
]
} | [] | [] | [
[]
] | ||
1xrdkd | the reports of people shining lasers in the eyes of pilots, how much of a hindrance is this? | I get the basics, someone shines a laser towards a plane, the pilots have problems seeing. I've owned laser pens before and I can't imagine they would have any impact at all on an airplane so I'm assuming they're using some other type of laser.
What types of lasers are we talking about here? How much 'blindness' cou... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1xrdkd/eli5_the_reports_of_people_shining_lasers_in_the/ | {
"a_id": [
"cfdyhgf",
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"score": [
2,
2
],
"text": [
"_URL_1_ and _URL_0_ From a small distance it's a tiny red dot. When you aim it at a plane, they see a blinding green image where if caught by surprise can disorient the pilot. This isn't really catching a plane at 30,000 fee... | [] | [] | [
[
"http://youtu.be/e1R4-OD0iWg?t=54s",
"http://www.youtube.com/watch?v=iI7Qq1mYQlI"
],
[]
] | |
7x5rom | How does one wind up buried inside a medieval monastery rather than a cemetery? | Hi AskHistorians! I study bones, and this is my first time working on an archaeological group rather than forensic cases. This does not relate to my study, but I’m extremely curious. Why am I seeing people buried inside a monastery rather than the adjoining cemetery?
I’m currently working on a group of skeletons who... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7x5rom/how_does_one_wind_up_buried_inside_a_medieval/ | {
"a_id": [
"du68ixw"
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"score": [
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"text": [
"Amazingly enough, I stumbled across a primary source *yesterday* that answers nearly all your questions here! It's a miracle story associated with Marguerite d'Oignt, a Carthusian prioress and mystical author from southern France who died in 1310... | [] | [] | [
[]
] | |
2dx3ft | difference between anarchism and communism | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2dx3ft/eli5_difference_between_anarchism_and_communism/ | {
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"text": [
"Anarchism is a way of living where everybody decides for themselves how things should be run. There is no government or no bosses to tell us what to do. We make up the rules ours... | [] | [] | [
[],
[
"http://dwardmac.pitzer.edu/anarchist_archives/kropotkin/conquest/toc.html"
],
[
"http://en.wikipedia.org/wiki/Recuperation_\\(politics\\)",
"https://www.youtube.com/watch?v=5o_U8--_ee0",
"http://en.wikipedia.org/wiki/Stateless_society",
"http://en.wikipedia.org/wiki/Marx%27s_theory_... | ||
jpnf1 | if water can't be compressed in the same manner as air, why do we talk about both air pressure and water pressure? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/jpnf1/eli5_if_water_cant_be_compressed_in_the_same/ | {
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"score": [
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"text": [
"Because the deeper you go, the more water presses on you. The more books you place on your ... | [] | [] | [
[],
[],
[],
[],
[],
[],
[],
[]
] | ||
1s19rb | How did Bavaria become a rich region of germany | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1s19rb/how_did_bavaria_become_a_rich_region_of_germany/ | {
"a_id": [
"cdthx9n"
],
"score": [
2
],
"text": [
"Real scholars and Bavarians would have a lot to add to this but I can give you some ideas. \n\nGoing way back and running all the way up to the present Federal Republic of Germany in which Bavaria is a state, Bavaria has been an independent duked... | [] | [] | [
[]
] | ||
33wj6a | why did i not develop seasonal allergies until well into my 20s? | As a kid I never had seasonal allergies, at least not until about 24-25 years old. As an adult they seem to be getting progressively worse each year. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/33wj6a/eli5_why_did_i_not_develop_seasonal_allergies/ | {
"a_id": [
"cqp17me",
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],
"score": [
6,
3
],
"text": [
"I got them after I was pregnant. I was hoping the second pregnancy would take them away again...no such luck ",
"Both your body and the environment change over time. The changing environment is easy to understand (especi... | [] | [] | [
[],
[]
] | |
vjvpu | Benefits and Risks of Hydrogen Peroxide | My dad has Parkinsons and was diagnosed 5 years ago. Recently we went to a doctor and he advised my dad to use 35% food grade hydrogen peroxide. I would like to know if there are risks/ actual benefits to this. | askscience | http://www.reddit.com/r/askscience/comments/vjvpu/benefits_and_risks_of_hydrogen_peroxide/ | {
"a_id": [
"c554wmy",
"c555g4z"
],
"score": [
3,
9
],
"text": [
"35% hydrogen peroxide is toxic if ingested undiluted. At lower concentrations ( > 3%) it is likely to induce vomiting.\n\nOther than that, all that will happen is it will decompose to oxygen and water, like the other comment... | [] | [] | [
[],
[]
] | |
5xadrf | why are most dvd and video game cases still so big? | I know that DVD cases were meant to be the size of VHS boxes and then video games followed suit, but no one really uses VHS anymore. Is there a reason DVDs and video games still practice wasteful packaging, especially now that a lot of video game manuals are digital and rarely included in the case? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5xadrf/eli5_why_are_most_dvd_and_video_game_cases_still/ | {
"a_id": [
"degl31f",
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"score": [
17,
9
],
"text": [
"1) Marketing - people have been conditioned to look for the DVD-sized case ever since DVDs came out.\n\n2) Theft deterrence - it's harder to fit big things in your pockets. ",
"Stores want the packaging to be large enou... | [] | [] | [
[],
[]
] | |
4po3c0 | How did the rivalry between French and German influence the everyday life of people living in Alsace-Lorraine? | The country that area belonged to changed frequently, did the people see themself as germans or french? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4po3c0/how_did_the_rivalry_between_french_and_german/ | {
"a_id": [
"d4nk2u5"
],
"score": [
2
],
"text": [
"I think it's really important that your provide a timeframe here."
]
} | [] | [] | [
[]
] | |
5qjaea | Was there rhyming in the Bible originally? | There are some parts of the Bible like Psalms, which are mostly songs or poems. They don't rhyme in the currently translated English obviously, but I'm curious if the original, untranslated songs or poems had rhyming in them. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/5qjaea/was_there_rhyming_in_the_bible_originally/ | {
"a_id": [
"dczwyou",
"dd05nqa"
],
"score": [
7,
3
],
"text": [
"Not normally, no.\n\nRhyme is predominantly a feature of English poetry. \n\nHebrew poetry, as in the psalms, is marked by other features. These include *parallelism* (including synonymous parallelism, where two lines expres... | [] | [] | [
[],
[]
] | |
673o4g | Did Peter the Great kill his son Tsarevich Alexei Petrovich? And if he did, why? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/673o4g/did_peter_the_great_kill_his_son_tsarevich_alexei/ | {
"a_id": [
"dgqgc2k"
],
"score": [
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],
"text": [
"He died after extensive torture and two days after he had been sentenced to death; it was less of an explicit chopping off of the head and more of a withdrawal of medical care after he had been repeatedly subjected to the harshest treatment the R... | [] | [] | [
[
"https://giphy.com/gifs/adult-swim-rick-and-morty-sanchez-8iVXSmSjWEgCc"
]
] | ||
16dhs3 | Photos and the Naked eye | All of these photos we see, like of the Pillars of Creation, if we were to be at that point would our naked eye see what we do in the pictures?
The reason I ask is I vaguely remember reading that the photos are a collection of different spectrum all added to one photo.
Update: Thank you for the wonderful (and sort of... | askscience | http://www.reddit.com/r/askscience/comments/16dhs3/photos_and_the_naked_eye/ | {
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"Nope. First of all, telescopes cannot take actual color pictures - their pictures are always in grey-scale. In order to create a color picture you have to take pictures through different filters. If you want to have a so-cal... | [] | [] | [
[],
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"http://apod.nasa.gov/apod/ap070326.html",
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9mv23g | US Tank Destroyers in the Pacific | Did any tank destroyer units serve in the Pacific in WWII and if so what vehicles did the use ex M3 GMC, M10 GMC etc | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/9mv23g/us_tank_destroyers_in_the_pacific/ | {
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"There was an initial requirement for 220 tank destroyer battalions, but the troop basis for 1943 called for only 144. Only a maximum of 106 battalions were ever active at one time, and the number required was trimmed to 78 in October 1943. Eleven... | [] | [] | [
[
"tankdestroyer.net",
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61kotl | why are some pale skinned people able to tan easily but others just burn and peel? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/61kotl/eli5why_are_some_pale_skinned_people_able_to_tan/ | {
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fu1rzg | products like lysol claim to kill germs. how does it do that? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/fu1rzg/eli5_products_like_lysol_claim_to_kill_germs_how/ | {
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"“Germs” can’t survive in high concentrations of alcohol. \n\nCertain cleaners contain anti-fungal or anti-bacterial agents also, which are different chemicals that kill fungus or b... | [] | [] | [
[],
[],
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1wszs5 | why were homo sapiens the only species of its kind to prosper, against the neanderthals and other species. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1wszs5/eli5_why_were_homo_sapiens_the_only_species_of/ | {
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"One current hypothesis is that we're a bit better at maintaining extended social networks, allowing for the development of groups beyond the slightly extended family",
"Neand... | [] | [] | [
[],
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[],
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"http://www.newscientist.com/article/dn23240-the-father-of-all-men-is-340000-years-old.html#.Uu5zcfldWWQ",
"https://en.wikipedia.org/wiki/Denisova_hominin#Interbreeding"
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35w1b6 | what exactly is turbo? | I know it has something to do with taking your exhaust and feeding it back into the engine somehow, and that it gives you more horsepower.
But how exactly does this work?
Also, does it make the car more efficient as a whole, such as by giving you more MPG? Why don't all cars have it, if this is the case? Is the only ... | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/35w1b6/eli5_what_exactly_is_turbo/ | {
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"Your engine requires oxygen to burn the fuel. The thinner the air that your car is breathing, the less oxygen is being fed into the engine and the worse the car will perform. A turbo works like the big ... | [] | [] | [
[],
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] | |
76jtys | I gather that Papal Indulgences were first issued during the Crusades to essentially "give last rites in advance" to Christians likely to die far from a priest. Is this right, and how did this turn into the "buy your way out of purgatory" scheme that Martin Luther criticised? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/76jtys/i_gather_that_papal_indulgences_were_first_issued/ | {
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"A further question: Did any Priests or significant religious figures follow the armies of any Crusade, to act as a rallying of support, to organize things like Mass, etc., or to deliver the aforementioned rites to dying?",
... | [] | [] | [
[],
[]
] | ||
3k7k25 | Were Christian women in Europe expected to wear veils for religious reasons? If so, when did the custom decline? | It's mentioned in the Bibile that women should cover their heads when praying, and it seems that Catholic nuns do veil themselves. I heard that a century or two ago, women in Europe, especially Southern Europe, commonly wore veils in public for religious reasons like many Muslim women do today. Is that true? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/3k7k25/were_christian_women_in_europe_expected_to_wear/ | {
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"At one point all women were required to cover their head for church. In general unmarried women were not obligated to cover their hair if they were not in church. Married women during the medieval era often cover their hair... | [] | [] | [
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4szxr3 | how is .99 repeating a rational number? | My understanding is that for a number to be rational, it needs to be able to be represented as a fraction, and that all repeating decimals can be represented as (repeating portion)/(same number of 9's).
.99 repeating would then be 9/9, which is 1. I don't understand how it can still be concidered a rational number | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4szxr3/eli5_how_is_99_repeating_a_rational_number/ | {
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"text": [
"I don't really understand the question. As you said yourself, .99 repeating can be represented as 9/9. Since it can be represented as the ratio of two integers, it's by definition a rational number.",
"It's a little fu... | [] | [] | [
[],
[
"https://en.wikipedia.org/wiki/0.999"
]
] | |
blgfki | why can't soiled cardboard be recycled? | I know that in the process the oil floats with the paper pulp and can't be separated which creates poor quality paper. My question is more specifically, why is there no chemical or physical process that can be used to separate the two? Is it a lack of innovation, a cost prohibition, or something else? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/blgfki/eli5_why_cant_soiled_cardboard_be_recycled/ | {
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"Separating and extracting the oil from the pulp requires too much effort and has too many risks for the crew and the facility (oil and food contaminants attract pests and bacterias).\n\nI assume it is more cost effective to trash the oily batch a... | [] | [] | [
[]
] | |
m36ss | how mma fighters can cut over 20 pounds in a day | i think a lot of it is water weight but TWENTY pounds?! it's crazy. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/m36ss/eli5_how_mma_fighters_can_cut_over_20_pounds_in_a/ | {
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"You're body is something like 60% water. If you significantly dehydrate yourself, then shed as much weight as possible, shit, piss, swea... | [] | [] | [
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2syrkm | why can the us postal service be given responsibility for the delivery of our mail, but when it never shows up just say "well we scanned it delivered so you'll have to talk to the seller" and not actually have repercussions? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2syrkm/eli5why_can_the_us_postal_service_be_given/ | {
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"If you didn't pay for package insurance, there's not really much they're obligated to do. It's not their job to ensure the physical security of a package once it's delivered unless you've paid for additional services.\n\nTh... | [] | [] | [
[],
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] | ||
fh7b0u | How much Ancient Greek philosophy originally came from Egypt? | I’ve read that the Greek philosophers that we know of as the “fathers of philosophy” (Socrates, Plato, Aristotle, etc.) actually got many of their ideas from the Ancient Egyptians. How much truth is there to that? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/fh7b0u/how_much_ancient_greek_philosophy_originally_came/ | {
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"text": [
"#**Part I**\n\nHi!\n\nDo you have a specific source in mind? I mainly ask because it is sort of a strange claim to make with respect to Socrates, Plato, or Aristotle. The preeminent influences on those thinkers were, first and foremost, each othe... | [] | [] | [
[]
] | |
bup8zr | why is it that people hate waking up even after getting 7-9 hours of sleep? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/bup8zr/eli5_why_is_it_that_people_hate_waking_up_even/ | {
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"The whole \"get 8 hours of sleep and you'll be fine\" is a myth(but still a good rule to live by). Genetically, everyone has different sleep needs. Some may feel fine after 5 hours, where some will f... | [] | [] | [
[],
[],
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] | |
6x00pg | How can we estimate the moment magnitude number of an earthquake that we know occurred, but have no direct measurements of? | What I mean is, when someone in say the thirteenth century wrote down that an earthquake occurred in his hometown on a specific date, can we look into the geological data and maybe estimate the strength of this earthquake? | askscience | https://www.reddit.com/r/askscience/comments/6x00pg/how_can_we_estimate_the_moment_magnitude_number/ | {
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"When dealing with historic earthquakes, we often rely on the [Modified Mercalli Intensity scale](_URL_3_), which classifies earthquakes on the basis of the intensity of it's felt effects (e.g. damage, etc) as opposed to the [moment magnitude scal... | [] | [] | [
[
"http://www.nature.com/ngeo/journal/v6/n1/full/ngeo1669.html?foxtrotcallback=true",
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"https://earthquake.usgs.gov/learn/topics/mag_vs_int.php",
"https://earthquake.usgs.gov/learn/topics/mercalli.php"
]
] | |
28lcme | Was there a Palestinian independence movement before the formation of the modern state of Israel? | Did the Palestinian people (from any time since the arrival of Islam) ever try to break free from the various empires and kingdoms that controlled the Levant? When did the Palestinian identity emerge? | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/28lcme/was_there_a_palestinian_independence_movement/ | {
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"text": [
"The short answer is overwhelmingly *yes*. However, the formation of the identity, and how strong it was before the 1948 Israeli Declaration of Independence, is still a hotly contested issue today.\n\nTo give you some background on why that is, t... | [] | [] | [
[]
] | |
gfxpt | Good introduction to gauge theory? | I'm a computer science person who finds all sorts of physics interesting. I've read a decent bit, but have been unable to get an understanding on just what gauge theories actually are. I don't understand what SU(1) is, what the exceptional Lie group E8 is, and I want to know.
Can anyone point me towards a reference ... | askscience | http://www.reddit.com/r/askscience/comments/gfxpt/good_introduction_to_gauge_theory/ | {
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"I'm sorry, I don't believe that you'll be able to get in to studying gauge theories without the mathematics. I don't believe it's possible.\n\nIf you do want to delve into the mathematics, though, I su... | [] | [] | [
[],
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6oolif | How much control did ancient empires actually have over their territories? | For example this map of the Assyrian Empire (_URL_0_). Was everyone in this territory under Assyrian administration? Could some remote village exist and be de facto independent? What about border control? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/6oolif/how_much_control_did_ancient_empires_actually/ | {
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"Using the Romans as an example (largely because I did a ton of work in NT/Early Christianity for a few years), it varied. Certain areas of the empire were under less control than the others. Take, for example, the province of Judea, where it's of... | [] | [
"http://www.lloydthomas.org/Graphics/AssyrianEmpireX.png"
] | [
[]
] | |
345l1j | If humans could process gasoline for energy, how much gas would we need per day? | askscience | http://www.reddit.com/r/askscience/comments/345l1j/if_humans_could_process_gasoline_for_energy_how/ | {
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"text": [
"[The energy in 1 gallon of gasoline is 31,500 food calories,](_URL_0_) so for a typical 2,500 calories a day, that's 0.079 gallons, or 251g. This much butter would only give 1,8... | [] | [] | [
[
"http://home.dejazzd.com/kgard/bcn/calories_in_gallon.html"
],
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"https://en.wikipedia.org/wiki/Energy_density"
],
[],
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5hkoob | if energy can't be created or destroyed how can the universe expand at an exponential rate, seeing as the same amount of energy has theoretically existed since the big bang? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5hkoob/eli5_if_energy_cant_be_created_or_destroyed_how/ | {
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"In physics laws of conservation (like the conservation of energy) rely on a fundamental symmetry, which means that if you can transform a property of your physical system while not changing how the system itself works (in sm... | [] | [] | [
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1myxcf | Where Do the Ancestors of the Modern Germans Now Living in Germany Originate From? | In the early history of the Roman empire we're taught that the Germans caused lots of trouble for the Romans. The Cherusci, the Chatti, the Bructeri, etc. I'm assuming these tribes were eventually assimilated into other Germanic tribes, and then by those migrating West. What do we know of the people currently living th... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1myxcf/where_do_the_ancestors_of_the_modern_germans_now/ | {
"a_id": [
"ccen0eo"
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"score": [
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"text": [
"A large part of the Germans today are actually the descendants of the Tribes that used to live there. Its true that many migrated west, but the larger proportion stayed in germany."
]
} | [] | [] | [
[]
] | |
1z8bxq | Would the whole earth be affected by an EMP from a coronal mass ejection, or would the side facing the sun only be affected? | askscience | http://www.reddit.com/r/askscience/comments/1z8bxq/would_the_whole_earth_be_affected_by_an_emp_from/ | {
"a_id": [
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"text": [
"A CME (Coronal Mass Ejection) does not produce an EMP (ElectroMagnetic Pulse). It's simply an ejection of charged particles from the sun, aka solar wind.\n\nThe solar wind compresses Earth's magnetosphere on the day side and \"pulls\" on the nig... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Solar_storm_of_1859",
"http://www.scientificamerican.com/article/geomagnetic-storm-march-13-1989-extreme-space-weather/",
"http://en.wikipedia.org/wiki/March_1989_geomagnetic_storm"
]
] | ||
3y8fce | What exactly is going on in your eyes and brain when you see something that's "too bright?" | askscience | https://www.reddit.com/r/askscience/comments/3y8fce/what_exactly_is_going_on_in_your_eyes_and_brain/ | {
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"Rhodopsin is a protein that changes conformation in response to light, as a g-coupled receptor this passes the signal on to nerve fibres, which then passes it into the brain, and then in time resets itself. \n\nHowever, this therefore means it is... | [] | [] | [
[]
] | ||
nfih0 | What is instinct? How does it guide an animal's behavior? | I was thinking about animals and their natural-born instincts. As I understand animals, they are born with a drive towards certain behavior, and we call this "instinct." For example, they know what their diet should be.
I'd assume that if a baby lion that had never had contact with other lions were given a choice, it ... | askscience | http://www.reddit.com/r/askscience/comments/nfih0/what_is_instinct_how_does_it_guide_an_animals/ | {
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"text": [
"I would respectfully disagree with the current top response. Our current understanding of animal behavior is such that each observed action is guided by a variety of factors and can have varying amounts of influence from ge... | [] | [] | [
[
"http://www.sciencedirect.com/science/article/pii/016310479290757U",
"http://www.sciencedirect.com/science/article/pii/S0003347205800478",
"http://www.sciencedirect.com/science/article/pii/S0166432897001423",
"http://www.bmj.com/highwire/filestream/197790/field_highwire_article_pdf/0.pdf",
"ht... | |
cjentp | In an era of rapid urbanization and technological advancement, why did the Nazis feel that lebensraum - that is, lots of agricultural land - was necessary? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/cjentp/in_an_era_of_rapid_urbanization_and_technological/ | {
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"text": [
"Lebensraum had a lot of its roots in the problems Germany encountered in WW1.\n\n & #x200B;\n\nDuring the First World War, the Central Powers ran into major supply issues in many areas, arguably the most critical being food. Germany and Austria ... | [] | [] | [
[]
] | ||
huo0l | Is there any difference between the singularity that existed just before the Big Bang and those which occur in Black Holes? | I'm having this doubt since, at least by my current understanding, the primordial singularity spontaneously gave way to the Big Bang; if the two singularities are not different, would a singularity of sufficient mass actually possibly create such a second 'Big Bang'? My understanding seems to hit a roadblock since in t... | askscience | http://www.reddit.com/r/askscience/comments/huo0l/is_there_any_difference_between_the_singularity/ | {
"a_id": [
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"score": [
14,
16
],
"text": [
"There was no singularity. \n\nFrom [Victor J. Stenger](_URL_0_):\n\n > This claim is based on a theorem derived from Einstein's general relativity and published by Stephen Hawking and Roger Penrose in 1970, which concluded... | [] | [
"http://www.hawking.org.uk/index.php/lectures/physicscolloquiums/68"
] | [
[
"http://www.huffingtonpost.com/victor-stenger/did-the-universe-come-fro_b_739909.html",
"http://www.colorado.edu/philosophy/vstenger/Briefs/Singular.pdf"
],
[]
] | |
4qpouf | In what format do nerves relay information to the brain? i.e., how does the brain “read” the information it receives from the nervous system? | askscience | https://www.reddit.com/r/askscience/comments/4qpouf/in_what_format_do_nerves_relay_information_to_the/ | {
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6,
12,
6
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"text": [
"All neurons transmit electro-chemical pulses. Every pulse is the same. Information about the strength of the signal is encoded in the frequency of the pulses. The signals for different sensations are c... | [] | [] | [
[],
[
"http://www.jneurosci.org/content/23/27/9146.full.pdf",
"https://mechanicalcochlea.files.wordpress.com/2011/04/hz-of-cochlea.png",
"http://www.cell.com/trends/neurosciences/abstract/S0166-2236(15)00119-8?_returnURL=http%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0166223615001198%3Fshowa... | ||
l8lgi | how a turbo works in a car. | Thanks for the responses.
| explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/l8lgi/eli5_how_a_turbo_works_in_a_car/ | {
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... | [] | [] | [
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3de33r | In the later stages of WWII, the Soviets emptied their prisons to fill their ranks. How did all these trained and battle-hardened convicts affect post-war Russia? | Listening to Dan Carlin's *Hard Core History* and reading a few other sources on the Eastern Front I learned that in the later stages of WWII the Soviet Government was scraping the bottom of the barrel of able soldiers and emptied more than few prisons to boost their manpower. Once the war was over how did they deal wi... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3de33r/in_the_later_stages_of_wwii_the_soviets_emptied/ | {
"a_id": [
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"score": [
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"text": [
"Do you mean penal battalions (shtrafbats/shtrafniki)?\n\nIf so, I refer you to a previous comment/post in a similar vein:\n\n_URL_0_\n\nThe comment seems to imply that the prisoner units were used in essentially suicide missions (\"human mine cle... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/2am4oz/did_the_red_army_really_use_humanwave_tactics_in/ciwj95k"
]
] | |
vdjvd | What causes those small holes at the beach in the sand that releases air when the water reaches them? | I've always been intrigued by this, these holes only exist near the water, if you take a look, you will notice that they are everywhere. When a wave comes and goes, the hole will release small bubbles of air. These holes are a few millimetres in diameter. What causes this? | askscience | http://www.reddit.com/r/askscience/comments/vdjvd/what_causes_those_small_holes_at_the_beach_in_the/ | {
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"c53ogwk"
],
"score": [
7,
15,
3,
2
],
"text": [
"If they're the kind of hole I think you're talking about, they're caused by small crabs that burrow into the sand. They come out onto the surface to sift through the surface sand ... | [] | [] | [
[],
[],
[
"http://www.youtube.com/watch?v=XDEHn4fBPhA"
],
[
"http://www.youtube.com/watch?v=EBxERHMUwrA&feature=related#t=95s"
]
] | |
2b66ua | Black holes affect light; thus light is pulled by gravity. Does light exert its own pull in return? | askscience | http://www.reddit.com/r/askscience/comments/2b66ua/black_holes_affect_light_thus_light_is_pulled_by/ | {
"a_id": [
"cj27pwv",
"cj2803y"
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"score": [
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17
],
"text": [
"If the light is moving at an angle relative to the black hole, yes, although it's minimal. If it's going straight towards the black hole, there isn't time for the gravitational field to reach the black hole before the photo... | [] | [] | [
[],
[]
] | ||
3hh837 | How did Marbury v. Madison establish judicial review in the United States? What was the role of SCOTUS before this decision? | My understanding is that in the decision for *Marbury v. Madison*, the Supreme Court asserted its authority in determining if laws were or were not Constitutional, and this decision is the basis for how SCOTUS operates as we know it. But if SCOTUS had to assert this authority in a case, that authority must not have bee... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/3hh837/how_did_marbury_v_madison_establish_judicial/ | {
"a_id": [
"cu7hl5j",
"cu7llo3"
],
"score": [
11,
4
],
"text": [
"Before the *Marbury v. Madison* case, the Supreme Court had not made any decisions that would significantly affect United States law, and was hardly recognized as an equal power to the other two branches. It had been realiz... | [] | [] | [
[
"https://books.google.com/books?id=JUj81cN6nyAC&lpg=PA46&ots=_5LFnPx9E8&dq=Constitutional%20Convention%20in%201787%20judicial%20review&pg=PA46#v=onepage&q&f=false"
],
[
"http://digitalcommons.law.yale.edu/cgi/viewcontent.cgi?article=2019&context=fss_papers"
]
] | |
50qtjv | why do some books have spiked, uneven page edges opposite the binding, whereas others are flat? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/50qtjv/eli5_why_do_some_books_have_spiked_uneven_page/ | {
"a_id": [
"d768ryy",
"d768w5t"
],
"score": [
21,
6
],
"text": [
"This is called a deckled edge. It's a stylistic choice that makes the book seem older. Printing technology used to produce pages with an uneven width by default, but today this only happens as a result of an intentional aes... | [] | [] | [
[],
[
"https://www.reddit.com/r/books/comments/jqn72/what_is_the_point_of_deckle_edge_paper_for_books/"
]
] | ||
1ujv8l | the economic and social argument why capitalism is better than all alternatives? | Why is capitalism preferred to all other kinds of ideologies? Economically speaking, is it more prosperous? What about socially and politically?
Can something like communism ever be argued as more economically beneficial than capitalism? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1ujv8l/eli5_the_economic_and_social_argument_why/ | {
"a_id": [
"ceixqic",
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"score": [
56,
17,
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],
"text": [
"Well I think a good way to answer this question is to look at those that defend capitalism, and those that defend other economic systems. There are definitely exceptions to the rule, but those who ten... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=wJLaRhTKzw8#t=1m22s"
],
[]
] | |
2fky5q | - why do i keep hearing the same scream of a man dying in films? ive heard it so many times. | Is there some secret reason the same sound bite is always used? Seen in the likes of kill bill and Star Wars | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/2fky5q/eli5_why_do_i_keep_hearing_the_same_scream_of_a/ | {
"a_id": [
"cka7x34",
"cka7xwj"
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"score": [
2,
7
],
"text": [
"It's called the [Wilhelm Scream](_URL_0_). The first clip in the video is the original.\n\nIt's kind of a tradition.",
"You're probably hearing the [Wilhelm Scream](_URL_0_).\n\nIt's a stock sound effect, but also one s... | [] | [] | [
[
"http://youtu.be/cdbYsoEasio"
],
[
"http://en.wikipedia.org/wiki/Wilhelm_scream"
]
] | |
34rkym | What was the French public opinion of Napoleon during his autocratic reign? He was certainly loved before his coup. | He had support before he came to power because of his immense success as a general of the French Republic, even saving the Revolution at one point.
Howerver, becoming the sole autocratic leader of France runs against the ideas of the Revolution. What was public opinion like after his coup and onward, and how did it ch... | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/34rkym/what_was_the_french_public_opinion_of_napoleon/ | {
"a_id": [
"cqy03o7"
],
"score": [
3
],
"text": [
"This is a broad question and I'm only going to focus upon the Brumaire coup itself and leave the Empire to others.\n\nNapoleon was arguably the most popular general in France by the time of the Brumaire coup in 1799. He already enjoyed great fame... | [] | [] | [
[]
] | |
20kicl | why can't aircraft flight data be stored online, like the icloud? | Could all the data recorded on the blackbox not be stored online? This would eliminate the risk of not finding it/ it being damaged. | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/20kicl/eli5_why_cant_aircraft_flight_data_be_stored/ | {
"a_id": [
"cg44nby"
],
"score": [
3
],
"text": [
"It can, but have your forgotten that \"the cloud\" and \"data anytime, anywhere\" is actually a pretty recent thing?\n\nUntil someone makes it law, or planes start to disappear more regularly, there's no incentive for anyone to spend the money to... | [] | [] | [
[]
] | |
3w559z | humans having unprotected sex can very easily contract stds. wild animals on the other hand always have unprotected sex and ive never heard of an std epidemic. why? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/3w559z/eli5_humans_having_unprotected_sex_can_very/ | {
"a_id": [
"cxtg5ga",
"cxtg5y8",
"cxtg97l"
],
"score": [
7,
4,
2
],
"text": [
"Check out Koala chlamydia. It's actually a really big problem with them; it has been in the news not so long ago.",
"Because people generally aren't very concerned with animal STDs and you aren't a ... | [] | [] | [
[],
[],
[]
] | ||
2wmqnh | Curious about the evolution of the "everyday shower" as a societal norm. Id love to know about when, where, and how fast showering went from a luxury, to an everyday must. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/2wmqnh/curious_about_the_evolution_of_the_everyday/ | {
"a_id": [
"coseavb",
"cosecce",
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"coseu2z",
"cosg50b",
"cosiq0t",
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"cosogo9"
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"score": [
277,
106,
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177,
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271,
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"text": [
"Moderator reminder:\n\nI have already... | [] | [] | [
[],
[
"http://www.amazon.com/Clean-History-Personal-Hygiene-Purity/dp/0199532087/ref=pd_cp_b_1",
"http://www.amazon.com/Stronger-Than-Dirt-Advertising-1875-1940/dp/1573929522",
"http://en.wikipedia.org/wiki/Social_hygiene_movement"
],
[],
[],
[],
[
"https://books.google.com/books?id=Z2AE... | ||
28o3ao | If lightning wants to ground taking the shortest path, then why does it travel in a zig-zag? | As opposed to traveling in a straight beam-like shape? | askscience | http://www.reddit.com/r/askscience/comments/28o3ao/if_lightning_wants_to_ground_taking_the_shortest/ | {
"a_id": [
"cicuxm6",
"cidq6hc"
],
"score": [
3,
2
],
"text": [
"Lightning wants to take the path of least resistance, rather than the shortest path. \nSo, when you see a zig-zag, it's \"searching\" for the path of least resistance by travelling through molecules in the air that provide t... | [] | [] | [
[],
[]
] | |
21ve5t | At the rate stars are forming in the milky way, what are the chances humans will witness new light from a young star appear? | askscience | http://www.reddit.com/r/askscience/comments/21ve5t/at_the_rate_stars_are_forming_in_the_milky_way/ | {
"a_id": [
"cgh97w9"
],
"score": [
2
],
"text": [
"The star formation rate (SFR) of the Milky Way is estimated to be ~ 2 solar masses per year. ([Source](_URL_0_)). So naively, one might say it is very likely.\n\nHowever, this SFR is an average and you should not interpret it that there are 2 sta... | [] | [] | [
[
"http://iopscience.iop.org/1538-3881/142/6/197/pdf/aj_142_6_197.pdf"
]
] | ||
94lj37 | the difference between chemical and biological weapons | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/94lj37/eli5_the_difference_between_chemical_and/ | {
"a_id": [
"e3lw793"
],
"score": [
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],
"text": [
"In basic terms, bioweapons are just living things used as weapons (or close to living, since there is some debate as to whether or not viruses are truly alive). So, bacteria, fungus, viruses, insects even, all count as bioweapons if they're bein... | [] | [] | [
[]
] | ||
2xnkgh | Do microphones record audio in a similar way to cameras, as in frames per second? | askscience | http://www.reddit.com/r/askscience/comments/2xnkgh/do_microphones_record_audio_in_a_similar_way_to/ | {
"a_id": [
"cp1qmv4",
"cp1qpih"
],
"score": [
3,
20
],
"text": [
"Microphones don't record audio any more than a lens takes a picture. Whether the recording is analog or digital depends on the recording device. ",
"Simple answer. The MICROPHONE does not. Your COMPUTER does.\n\nYou can... | [] | [] | [
[],
[
"https://www.youtube.com/watch?v=4eC6L3_k_48"
]
] | ||
1r2h4z | How did the Arabs feel about the holocaust? | I'm not talking about modern arabs, but arabs in Palestine, Iran, Egypt and Lebanon during the prime of the Israeli-Arab conflicts. | AskHistorians | http://www.reddit.com/r/AskHistorians/comments/1r2h4z/how_did_the_arabs_feel_about_the_holocaust/ | {
"a_id": [
"cdixlny"
],
"score": [
35
],
"text": [
"Few things to note here.\n\n1) Iranians are not Arabs\n2) Israel was not a state when the holocaust was happening\n\nNow to answer your question. There are some cases of Jewish-Arab clashes growing in the Middle East due to the Zionist movement.... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Grand_Mufti_of_Jerusalem",
"http://en.wikipedia.org/wiki/Great_Mosque_of_Paris",
"http://isreview.org/issue/74/arab-responses-nazism",
"http://en.wikipedia.org/wiki/Khaled_Abdul-Wahab",
"http://en.wikipedia.org/wiki/Arab_rescue_efforts_during_the_Holocaust"
]
] | |
19rcb7 | Are human beings closer to being on the smallest conceived scales of reality or the largest? | askscience | http://www.reddit.com/r/askscience/comments/19rcb7/are_human_beings_closer_to_being_on_the_smallest/ | {
"a_id": [
"c8qmk7r"
],
"score": [
6
],
"text": [
"We can't really answer that question yet. A tau neutrino exists as about 2x10^-35 m. The universe is 4.3×10^26 m. The average human about 2x10^0 m. Arguably we are close to the big side of that. The problem is that we can't say with certainty if ... | [] | [] | [
[]
] | ||
8l185q | what is the difference between anglicanism and catholicism? | [deleted] | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/8l185q/eli5_what_is_the_difference_between_anglicanism/ | {
"a_id": [
"dzc37s2",
"dzczx43"
],
"score": [
11,
2
],
"text": [
"The Head of the Church of England is Her Majesty Queen Elizabeth II.\n\nThe Head of the Catholic Church is His Holiness Pope Francis.",
"Worth mentioning that the Anglican Church is a subset of the Protestant branch of ... | [] | [] | [
[],
[]
] | |
6nxhhr | why is it that when you ask someone to guess a number there's a high possibility it will be 7? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/6nxhhr/eli5_why_is_it_that_when_you_ask_someone_to_guess/ | {
"a_id": [
"dkczw7u"
],
"score": [
16
],
"text": [
"This is an interesting quirk of human psychology. Humans don't pick things at random, but they will try to. You end up with a weird situation when they pick the most 'random looking' number. Here's the general thought process:\n\n* Pick a number... | [] | [] | [
[
"http://www.misterpoll.com/polls/449086/results"
]
] | ||
1mmg9s | When neuroscientists say a part of the brain "lights up," what's actually going on? | askscience | http://www.reddit.com/r/askscience/comments/1mmg9s/when_neuroscientists_say_a_part_of_the_brain/ | {
"a_id": [
"ccan1bu",
"ccansqe"
],
"score": [
6,
2
],
"text": [
"They are likely talking about fMRI scans. fMRI = functional Magnetic Resonance imaging. It depends on the blood oxygen level signal (BOLD- blood oxygen level dependent). The theory behind his is basically that if a part of y... | [] | [] | [
[],
[]
] | ||
z0uex | AskScience: How is it physically possible for a planet to orbit twin suns? | As I'm sure many of you have read, [kepler has found two planets within a binary start system](_URL_0_).
Thinking about it practically I would think that the overlapping rotations of the two stars vs the orbit of the planet would cause too much feedback to create a stable system, unless the planets were rotating *perf... | askscience | http://www.reddit.com/r/askscience/comments/z0uex/askscience_how_is_it_physically_possible_for_a/ | {
"a_id": [
"c60i23y",
"c60iu24"
],
"score": [
3,
5
],
"text": [
"If the two stars are much closer to each other than the orbit of the planet then it pretty much orbits as it does one star. From [this picture](_URL_0_) that basically looks like the case.",
"In addition to having a plan... | [] | [
"http://www.huffingtonpost.com/2012/08/29/alien-planets-twin-suns-star-wars-tatooine-nasa_n_1838816.html"
] | [
[
"http://i.huffpost.com/gen/749768/original.jpg"
],
[]
] | |
5j2vnp | why is there a social stigma against prostitution and similar professions? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/5j2vnp/eli5_why_is_there_a_social_stigma_against/ | {
"a_id": [
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"score": [
7,
65,
38,
58,
42
],
"text": [
"because of religious roots. back in the day, pretty much everyone was one religion or another. only recently have people been more uncaring for organize... | [] | [] | [
[],
[],
[],
[],
[]
] | ||
bq5795 | Was Hitler compared to someone ? | Nowadays, everyone is compared to Hitler.
But back then, was Hitler compared to someone who lived before him ? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/bq5795/was_hitler_compared_to_someone/ | {
"a_id": [
"eo1rjbj"
],
"score": [
452
],
"text": [
"Prior to the arrival of Godwin's Law, and the inevitable conclusion of comparing all things to Hitler, during his own rise, Hitler was compared to many people, both real and imagined. Gavriel D. Rosenfeld kindly has done much of the legwork in ... | [] | [] | [
[
"https://old.reddit.com/r/AskHistorians/comments/8r3e5x/i_am_gabriel_rosenfeld_professor_at_fairfield/"
]
] | |
4s08z8 | Is it possible some Europeans visited the Americas long before the Vikings or Columbus and simply never wrote about it? | Couldn't someone with a ship just go on their own trip without the mandate of a King and just go exploring? That's what people did back then didn't they? They'd explore?
Maybe some odd objects found in America with distinctly Roman Anglo styles and features which predate known trips to the Americas were from people ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/4s08z8/is_it_possible_some_europeans_visited_the/ | {
"a_id": [
"d55iebe",
"d55mw62"
],
"score": [
18,
4
],
"text": [
"In Salt: a World History, Mark Kurlansky suggests that cod fishermen could have discovered Newfoundland and its massive cod fisheries as early as the mid 15th century. The reasoning for not relaying this discovery would be ... | [] | [] | [
[],
[
"https://www.reddit.com/r/AskHistorians/wiki/nativeamerican#wiki_pre-columbian_trade_and_contact"
]
] | |
a6h6by | why we still need to do the whole "left eye/right eye, option 1 or option 2" when getting glasses? why isn't there a machine that can test this just by looking at our eyes? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a6h6by/eli5_why_we_still_need_to_do_the_whole_left/ | {
"a_id": [
"eburv4x",
"ebus1kq",
"ebv8w6s",
"ebwnj4a"
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"score": [
14,
92,
2,
2
],
"text": [
"There are now. My optometrist has a “pre-test” that gives a ballpark range to the classic machine they put on you. So instead of an unending series of better or worse, you read a... | [] | [] | [
[],
[],
[],
[]
] | ||
94qvqb | What, if anything, was behind the limited range of given names in Tudor England? | I'm thinking in particular of the sheer number of Thomases -- off the top of my head, the court saw Thomas Wolsey, Thomas Moore, Thomas Cromwell, Thomas Howard, Thomas Cranmer and Thomas Wroithesley, all within a short period, and I'm sure I'm forgetting others. Or on the female side, for instance, Henry's queens featu... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/94qvqb/what_if_anything_was_behind_the_limited_range_of/ | {
"a_id": [
"e3n5ot0"
],
"score": [
16
],
"text": [
"I've looked at this question from a couple of different angles, [the first of which](_URL_1_) is specifically about the name \"Thomas\" and opens with--I promise I did not just edit this in--the three Catherines, two Annas situation.\n\nI'll pa... | [] | [] | [
[
"https://www.reddit.com/r/AskHistorians/comments/62z39k/what_happened_to_the_given_namefirst_name_pool/dfqccs3/",
"https://www.reddit.com/r/AskHistorians/comments/3ph3b9/is_there_an_explanation_for_the_popularity_of_the/cw69ekr/"
]
] | |
2omrsm | What happens to the last remaining atom in a lump of radioactive material?At which point does it disintegrate? | (from an article in the Journal of Heuristics)
#As this is different from the half -life prediction,shouldn't radioactivity be treated as an 'emergent' phenomenon?
#At which point is 'singleness' and 'manyness' achieved? We can vaporise the initial lump into single atoms -why does this give rise to a scenario differ... | askscience | http://www.reddit.com/r/askscience/comments/2omrsm/what_happens_to_the_last_remaining_atom_in_a_lump/ | {
"a_id": [
"cmorn8v",
"cmpj1mu"
],
"score": [
30,
3
],
"text": [
"Half life is just a a way to represent the probability of an atom to decay. No matter how many or how few atoms you have in a system, each atom has a 50% chance of decaying in one half life. These events are all independe... | [] | [] | [
[],
[]
] | |
4cklt8 | why does city construction take so long? it seems like there are 100 projects that each get 10 guys. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/4cklt8/eli5_why_does_city_construction_take_so_long_it/ | {
"a_id": [
"d1iziu4",
"d1izptk",
"d1j14in"
],
"score": [
6,
2,
2
],
"text": [
"It depends on the project, but in general there is a lot more going on than you notice. Like for example there was a recent building built in my area. For the first 3 months or so it looked like almost ... | [] | [] | [
[],
[],
[]
] | ||
29f873 | how close are we to stopping dementia/similar afflictions? are there any measures that can be taken to prevent them? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/29f873/eli5_how_close_are_we_to_stopping_dementiasimilar/ | {
"a_id": [
"cikd41i",
"cike25s"
],
"score": [
5,
3
],
"text": [
"you asked the same question yesterday...",
"I believe that there is a lot of potentially very significant research underway that will offer hope to people with these conditions in the not too distant future, but they are... | [] | [] | [
[],
[
"http://www.independent.co.uk/news/uk/home-news/alzheimers-treatment-breakthrough-british-scientists-pave-way-for-simple-pill-to-cure-disease-8869716.html"
]
] | ||
7napzl | How difficult would it have been for an American during World War I or World War II to avoid the draft by simply ignoring notices and moving around the country? How widespread was such a thing? Presumably this meant abandoning their identity from before the war? | Such a thing seemed as if it would be completely plausible, but how widespread was it? If it did occur, how zealous were prosecutions after the war was over when such people were found?
Before the institution of a national identity system, i.e. a social security card, it seems like it would have been pretty trivial ... | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7napzl/how_difficult_would_it_have_been_for_an_american/ | {
"a_id": [
"ds0fgl1"
],
"score": [
33
],
"text": [
"During Word War I, our case for going to war wasn’t nearly as strong as in World War II. The war was in some ways “forced”. There was a lot of protest.\n\nTo avoid this during World War II, a very robust system for “Conscientious Objectors” was ... | [] | [] | [
[]
] | |
7poon2 | What are the origins of the LTTE and the related issues of the Tamil people in Sri Lanka? | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/7poon2/what_are_the_origins_of_the_ltte_and_the_related/ | {
"a_id": [
"dsr81jr"
],
"score": [
19
],
"text": [
"This is a very long and complicated question that is still, even following the defeat of the LTTE in 2009, a sensitive topic. While it pushes up against the 20 year rule, I will do my best to stick to the conflict before 1997, though it will li... | [] | [] | [
[]
] | ||
a7g1qn | how does constantly pressurized compressed air not build up too much pressure and cause a pipe or hose to burst when a valve is closed? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/a7g1qn/eli5_how_does_constantly_pressurized_compressed/ | {
"a_id": [
"ec2oe2p",
"ec2oo0s"
],
"score": [
2,
7
],
"text": [
"I would think in most applications it is pressurized to a certain level that the containment vessel is capable of handling, not simply continuously increasing in pressure indefinitely, since that certainly can rupture the ve... | [] | [] | [
[],
[]
] | ||
3f224p | why are our spinal cords so poorly protected? | Our key organs have evolved to provide adequate protection: the skull around brain, the rib cage around various organs. The spinal cord however seems to be poorly protected, it's relatively exposed and damaging the spine seems common. Can somebody explain the benefit of the spine's position and why it has evolved so? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/3f224p/eli5_why_are_our_spinal_cords_so_poorly_protected/ | {
"a_id": [
"ctkjjas"
],
"score": [
4
],
"text": [
"Most of your organs (nearly all of which are as utterly necessary for life as your spine) aren't protected by any bones at all (most of your GI tract for example). \n\nThe spinal cord is actually a very key development in evolution and is conserv... | [] | [] | [
[]
] | |
60vx82 | a law was passed a while back that grants corporations the rights of people | In what ways would a corporation NEED to be treated as a person? The only articles I can find seem to be heavily polarized one way or the other. | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/60vx82/eli5_a_law_was_passed_a_while_back_that_grants/ | {
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"score": [
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"text": [
"The supreme court of the US decision in Citizens United was that corporations have the same \"free speech\" right... | [] | [] | [
[],
[],
[
"https://en.wikipedia.org/wiki/Buckley_v._Valeo",
"https://en.wikipedia.org/wiki/Citizens_United_v._FEC"
],
[],
[],
[],
[
"https://en.wikipedia.org/wiki/Bipartisan_Campaign_Reform_Act"
]
] | |
1c6r9v | How does degreaser (soap, purple power, engine stuff) degrease? | Is there a difference between engine grease and kitchen grease that degreasers can tell? What physically makes them break up grease? What makes some degreasers work better than others? | askscience | http://www.reddit.com/r/askscience/comments/1c6r9v/how_does_degreaser_soap_purple_power_engine_stuff/ | {
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"c9dkgyq",
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"score": [
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"text": [
"Q: How does degreaser (soap, purple power, engine stuff) degrease? \nA: They emulsify the grease. That means they allow it to mix with water which wouldn't usually happen due to molecular polarity.\n\nQ... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Emulsion"
],
[],
[
"http://en.wikipedia.org/wiki/Sodium_dodecyl_sulfate"
]
] | |
9swori | how come we are often more energized when we're running on only a few hours of sleep, compared to days when we had a full 7-8 hours of sleep? | explainlikeimfive | https://www.reddit.com/r/explainlikeimfive/comments/9swori/eli5_how_come_we_are_often_more_energized_when/ | {
"a_id": [
"e8s0ons"
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"score": [
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"text": [
"Sleep for humans is made up of 5 different 'types' or 'stages' divided into two categories, which we cycle through. This progression is Non-REM 1, 2, 3, 4, 3, 2, then REM, after which we will either go back to Non-REM 2 and repeat from there, or... | [] | [] | [
[]
] | ||
1hfxi7 | texas hold'em | I know the rules, I want to know strategy. Betting patterns, does everyone have a tell? How do I spot it? | explainlikeimfive | http://www.reddit.com/r/explainlikeimfive/comments/1hfxi7/texas_holdem/ | {
"a_id": [
"caty0b3",
"catydbh"
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"score": [
6,
6
],
"text": [
"This isn't really an ELI5 question because the answer(s) are entirely too broad. There are 100s of entire books written on poker strategies, especially more so in recent years as poker and WSOP tournaments have risen in pop... | [] | [] | [
[],
[]
] | |
7fe5xz | What is the body's conversion efficiency of energy stored in food to energy stored in fat, or energy available to do work with? | For example, if I eat 1000 calories of sugar:
* How many calories will be stored in fat (assuming none of the calories are used for exercise etc).
* How many calories are available to perform work with (after the body has converted the sugar to ATP, etc). The assumption is that the conversion process from Sugar -- > ... | askscience | https://www.reddit.com/r/askscience/comments/7fe5xz/what_is_the_bodys_conversion_efficiency_of_energy/ | {
"a_id": [
"dqbdrep",
"dqbe5st",
"dqbe8jb",
"dqbebgf",
"dqbhbau",
"dqbl9x5",
"dqbxdkv"
],
"score": [
102,
628,
25,
3,
17,
109,
5
],
"text": [
"Hello friend, when consuming calories from any source (protein fat or carbs) the body will undergo specifi... | [] | [] | [
[],
[],
[],
[
"https://www.ncbi.nlm.nih.gov/pubmed/15615615"
],
[],
[],
[
"https://en.wikipedia.org/wiki/Human_power"
]
] | |
8nr4wn | Why are absolute rulers now called dictators instead of monarchs? | Dictators seem just like a monarchy, usually their eldest son inherits the country and so on. And they have the powers of monarchs back before they were all destroyed. | AskHistorians | https://www.reddit.com/r/AskHistorians/comments/8nr4wn/why_are_absolute_rulers_now_called_dictators/ | {
"a_id": [
"e004hvr"
],
"score": [
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"text": [
"I suppose the primary difference between a monarchy and a dictatorship is in terms of self-identification. We still have absolute rulers being monarchs, mind you. KSA and Qatar, amongst other Gulf states, still have very strong monarchies. What d... | [] | [] | [
[]
] | |
29zjnb | As a car sits outside, does the temperature inside the car just keep going up, or is there an upper limit? | askscience | http://www.reddit.com/r/askscience/comments/29zjnb/as_a_car_sits_outside_does_the_temperature_inside/ | {
"a_id": [
"ciq4hvm"
],
"score": [
11
],
"text": [
"Car absorbs thermal energy from sunlight, but also radiates it back via [black body radiation](_URL_1_), and tranfer it throught [air convection](_URL_0_), etc. when equilibrium of those forces (not limited to what i mentioned)is achieved the b... | [] | [] | [
[
"http://en.wikipedia.org/wiki/Convective_heat_transfer",
"http://en.wikipedia.org/wiki/Black-body_radiation"
]
] |
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