Split (3)

train · 273k rows

title stringlengths 0 299	text list
Are first world countries only wealthy because third world countries are poor?	[ "Theoretically, no. Wealth is not a zero sum game, because wealth is not strictly measured in the amount of actual, physical dollars which exist. Right now, third world countries aren't generating enough value with their resources, and a huge part of that is exploitative rather than endemic.\n\nSo I don't need to t...
How does the 3D on the Nintendo 3DS work?	[ "What you are actually looking at is two separate screens in one unit.... well, technically three as there is the non-3D screen too, but lets ignore that...\n\nThe 3D screen of the 3DS is actaully two screens in one. One screene points towards your left eye, the other towards your right eye. It will play even frame...
Why there are different types of blood & the difference in them ?	[ "As to why? That is hard to say. Part of it is evolutionary differences. For example certain races such as people from India have blood types that no white person could have. \n\nThe difference? Let's just talk about A, B, AB, and O. There are molecules attached to the surface of our red blood cells. Based upon the...
why is Volkswagens false emissions test hurting the company's reputation more than other more serious recalls that have killed people?	[ "It is not that emissions are more important than a human life. It is the fact that in this case, it was a very purposeful lie. And it makes people wonder if they are lying about this, what other things might they be lying about that might directly affect their safety.\n\nTo some degree, people accept that producti...
What does North Korea's attack on South Korea mean for me?	[ "What it means right now: North Korea and South Korea are having another dispute with North Korea puffing itself up like it usually does.\n\nWhat it could mean in the future: A war between both sides that could potentially ruin both Koreas, and possibly American intervention. If America does intervene in the possib...
What "Real Hacking" Is	[ "Exploiting a computer system requires you to first identify a vulnerability. To be able to find a vulnerability in a program that you don't have the source for (you don't get part written for humans, just the part written for the computer) requires a person to know about all different kinds of vulnerabilities and ...
Has CERN found the Higgs particle or not? I know last year there were very strong indicators that they did and they would get back to all of us when they tested further. But I cant find anything but 8 month old speculative documents at this point.	[ "The LHC shut down for upgrades in early 2013 and is due to restart soon, so there are likely to be more announcements once it's been running for a while and they've analysed the new data.\n\nThe current position seems to be that they're confident they've found \"a Higgs boson\", but won't yet call it \"the Hig...
In cases of mass shootings with one perpetrator, why do witnesses often report seeing multiple attackers?	[ "Gunshots are very loud. That means that they echo in situations where other sounds wouldn't have audible echos. They hear shots from several directions, and tell that to the police, who decide to play it safe and act as though there are multiple attackers.", "It is not easy to identify who is on what side. Peo...
How are "knots" formed in trees?	[ "Woodworker here.\n\n/u/cnash is right about knots caused by branches: the branch wood is flowing at more or less right-angles to the rest of the trunk; the grain in the main trunk has to flow around the intrusion that is the branch, creating the characteristic \"eye\" pattern of a knot. Woodworkers tend to dislike...
Why is censoring a vehicle's license plate important for privacy? It's not like we can't see everyone's license plate already.	[ "The chances of a person jotting a license plate down while in traffic is a lot lower than if you have a static image you could reference." ]
Why and how do Lumbricus terrestris (rain worms) simply appear during rain?	[ "They sense the vibrations, and they crawl up to the surface. Worms need to be wet in order to breathe, so they can't survive on dry land. If it's wet, they come up because they \"know\" they can move around freely on the surface without dying.\n\nA lot of birds exploit this fact by hopping around on the ground and...
When we drink the juice of a fruit, what are we drinking? What does the juice do for the plant?	[ "Fruits are usually bait. The plant puts sugar and water in it to tempt some animal to come along and eat the fruit. In exchange for this food, the animal then distributes the seeds from that fruit elsewhere allowing the plant to spread.", "The fruit tastes good so you eat it. The plant is trying to get you to ea...
Would using a local anesthetic like lidocaine help with the burning from hot peppers like habaneros?	[ "Interesting idea. I'm not sure if it would or wouldn't help.\n\nI will note that milk doesn't (directly) counteract the pain or heat, at least that's not its primary function. The hot substance in peppers is an oil which doesn't mix (easily) with water. Milk contains fats that will mix with it and wash it away.\n\...
Why do online newspaper use a paragraph for each sentence?	[ "This is what they teach in journalism schools. A paragraph should only contain one idea as readers would get bored with a wall of ink." ]
Can someone explain how drug control rooms help drug addicts?	[ "How do they help addicts?\n\nThey provide a safe environment, usually with clean needles, in which to use. There's medical attention nearby in case of OD. Most importantly, it's an environment where users can be exposed to help, where they can ask for help, where they won't be arrested or judged.", "I don't kn...
what does it mean when payments shall be made by the company in arrears at the end of each month of services?	[ "> Does this mean I will be pay on Jan 5\n\nYes. \"In arrears\" means they pay after the work is done, not before. They have 30 days after you submit the invoice, which comes after the work is done.\n\n > What do I do if they pass overdue and when will should I start inform them that they're overdue, in advance...
How time signatures work and why 4/4 (whatever that is) seems to be frowned upon etc.	[ "4/4 is the most common time signature... I've never heard about it being \"frowned upon\"", "Okay, so no one else seems to be answering the first part of your question. I'm a music education major and I've been studying music theory for 5 or so years now, so I'll jump in and offer my two cents.\n\nFirst of all, ...
Is there any difference between eating 10 cookies today and eating 1 cookie every day for the next 10 days?	[ "Yes. Eating a large number of cookies will add many calories into your diet. Your body will be busy processing those calories and using them for energy as they come from fast-energy sources like simple carbs. Other food you eat with fat and protein after eating 10 cookies will be set aside until the cookie carb...
How come artificial sweetener can be used in diet soda to reduce caloric intake but cannot be used in chocolate?	[ "You could use artificial sweetener to reduce the calories in chocolate but a large number of calories from chocolate comes from all the fat that's necessary to give it a proper texture. This is a problem you have with most solid foods - there's few things you can use to give them volume & body that can pass thr...
Why do MLB games start at random times like 7:05, 7:10, 7:40 etc., instead of just starting at 7,8,9,etc.?	[ "Because of television broadcasts. It let's the station start their broadcast at a normal time, say 7, and have five or ten minutes to do an intro to the game before first pitch." ]
New device batteries and charging them	[ "Using up the entire battery until it's dead will just lower the battery life over time You should charge when the battery is low and not dead Also using a device while charging won't affect it" ]
Airlines rules against using electronics before 10,000 feet and having your seatback in the upright position for takeoff and landing	[ "1. Takeoffs and landings are the most potentially dangerous parts of the flight. Electronics reduce focus during safety briefings and awareness during the takeoff/landing. Reclined seatbacks and ajar tray tables reduce passenger mobility in the event of an emergency, when the ability to evacuate the plane are of u...
Why do Snowflakes have a 6-based symmetry, and why is each one unique?	[ "Caltech has an excellent primer [here](_URL_0_) but basically, the molecular structure of water itself leads to the 6-fold symmetry, and the fact that no two are exactly a like is a result of tiny imperfections in the crystals as they grow, combined with the staggeringly [huge](_URL_1_) number or possible shapes."...
When/How did peanut allergies become so prevalent?	[ "Pediatricians in America advised against nuts since they represent a choking hazard. An indirect effect was that children's immune systems were not exposed to nuts during its development. Once developed, their immune systems reacted, violently (anaphylaxis) at times. The American Academy of Pediatrics just rece...
Audio feedback.	[ "The amplifier is amplifying its own output in a closed loop so the volume keeps increasing.", "The microphone picks up a sound which is amplified and comes out the speaker. That sound from the speaker is then picked up by the microphone, which is then pumped out the speaker, louder than before, which the microp...
How does prizes like "Win Pespi 4 LIFE!" work?	[ "It all varies on the prize. Sometimes they give you a huge upfront amount that they call a lifetime supply, sometimes they dole it out every so often in instalments, sometimes they get you to ring up and ask for more when you run out. It's not going to be an unlimited supply though.\n\nIt's rarely bad to win a lif...
Why does it hurt our eyes to look at something that is bright?	[ "Human eyesight evolved in a specific environment to serve a specific purpose, so eyes are attuned to the needs of that environment.\n\nEyesight is merely a light collection device, so any light spectrum greater than the normal range can damage these sensitive tissues. A pain reaction serves to avoid damage and is ...
Why did we come up with Magenta, Cyan and Yellow for printers instead of Red, Green and Blue?	[ "It's the difference between additive coloring (RGB) and subtractive coloring (CMYK).\n\nThe paper is white so by using Magenta, Cyan, or Yellow you are using the ink to \"hide\" portions of the white coloring (which contains every color) thus allowing the unhidden portions through. If you used all 3 the result wou...
Why would estrogen and progestogen in birth controll pills decrease fertility for women instead of increase fertility?	[ "The important thing to know is that the menstrual cycle is just that, a cycle. A series of things happen in the right order, repeatedly, and that allows for ovulation and fertility. Hormones are particularly weird in that different levels, or a pulse vs. a constant amount, can have very different effects. Disrupti...
With what money does a government make payments with in a deficit? And who do they owe that money to?	[ "Governments will issue what are called bonds, which lets anyone purchase the bond with the agreement that the government will pay the money back in time plus interest.\n\nThe government pays down these debts using revenue collected through various means (the greatest of which is taxes on the citizen population). T...
why are paper prescriptions required for Schedule II scripts? how is that in any way more secure than electronic scripts?	[ "My doc just upgraded her system to allow her to write schedule 2 and submit digitally. More stringent. Requires her to use a hardware RSA key for two factor authentication and all. It's coming. Don't worry." ]
Why isn't mouthwash a good enough substitute for toothpaste?	[ "Toothpaste is a mild abrasive.This means that it is better at scraping, specifically scraping plaque from the teeth. Mouthwash does not have this property, and may not remove all plaque and food scraps from the teeth.", "Drive your car through a muddy, dirty place, let the dirt settle. \nWash your car with a ...
Movie Volume - Action scenes VS dialogue	[ "It's more of a side effect when converting from surround sound to stereo. Because surround has 7 speakers around you, each one requires less volume to make a large total sound. When you compress these 7 speakers into 2 for stereo, the action sequences that use all 7 speakers normally, get compressed into two speak...
Why do optometrists and opticians refuse to tell me my pupil distance?	[ "If they give you the PD value, then you can go on-line and buy glasses for a tiny fraction of the price which they would like to sell them for. Without the PD value you may have the right prescription on the lens, but the lens will not be in their ideal position on your face which causes distortion. You might be...
Artificial Neural Nets	[ "Neural networks is one of many techniques in computer science which draws its inspiration from nature where something intelligent or organised seems to happen where you would initially not expect by looking at the individual components. In this case we're trying to model neural cells, or neurons, in the brain. Eac...
Do firefighters use fresh water to extinguish the flames? If so, why not use salt water? Also, why is the pressure of the water from the fire hydrant so high? I would like to know it’s practical use and what causes it to be so high, like maybe PV=nRT?	[ "Salt water is unavailable most places, unless it's created. Also, salt water is far more corrosive than fresh.\n\nPV=nRT is the ideal gas law, and doesn't apply to liquids. Pressure is high because they have fat pipes with high pressure water feeding the hydrants.", "PV nRT deals with gas. The pressure is high b...
Goods and Services Tax (GST)	[ "We're all familiar with taxes that tax your income. But there's another class of tax that taxes your expenditure - it's called a consumption tax. A goods and services tax is a type of consumption tax. \n\nA very simple type of consumption tax is the sales tax that is added on to the price at the checkout. But, wha...
What is SMTP?	[ "STMP stands for Simple Mail Transfer Protocol. It is the common language (protocol) used by both email clients and servers to understand each other and be able to send emails. Imagine that you were building a new Outlook application. You would need to \"speak\" SMTP if you were to communicate with the email exchan...
How can a video have more likes than views?	[ "Videos are stuck at 301 because YouTube starts to change the way they count views and they check the video starting after 300, so videos will often get stuck at 301 because it's the first number after 300, then youtube had to process it on their end before they start to count those views" ]
Why do schools still insist on standardized tests even though all the teachers and students find them to be dumb?	[ "Pretty simple. Because they are easy to grade and organize students based on a score. \n\nThere are much better ways to gauge learning, but they require a lot more time and effort than filling in bubbles and running them through a machine.", "So yes there are better (but more difficult and costly) ways to measur...
How does rolling something between your hands produce an almost perfect sphere?	[ "Imagine starting with a cube-shaped chunk of play-doh and rolling it in your hands. The corners get smushed, because they stick out. There are still some edges that stick out though. If you roll carefully, you'll eventually smush down all the corners and edges without making new ones. A shape that doesn't have ANY...
How can people die from skin cancer? Why can't the cancerous part simply be cut away?	[ "Cancer is cancer because it spreads.\n\nIf its a benign tumor or you catch it early enough then you can easily cut away the affected area and everything is fine\n\nIf the tumor metastasizes(spreads) then your melanoma(skin cancer) can go from tumors on your skin to tumors in your liver or kidneys or lymphnodes. T...
What is the reason for car alarms going off due to vibration?	[ "10+ years selling/installing alarms here.\n\nIt's not a vibration sensor, it's a \"shock\" sensor. 504D is a common part number.\n\nIt alerts the owner to an impact. For instance, your ex taking a Louisville Slugger to both headlights, or a thief smashing a window. Things that wouldn't trigger the alarm if it just...
How exactly did ISIS form and why does Reddit say their formation is because of the United States?	[ "ISIS formed due to the power vacuum caused by the Syrian Civil War. They were one of the more competent groups, and as such, more and more people joined their ranks. The more people they gained, the bigger their ambitions got. Eventually, their ambitions outgrew the organization they were originally part of; Al Qa...
fluoride ingestion vs fluoride topically on teeth	[ "> Will fluoride ingested orally react with HCl in the stomach? \n\nNo. Fluoride is F- (a negatively charged ion) and it will remain F- when it's in your stomach. It doesn't react with anything there, especially at the very very low concentrations you'd find it in water and other drinks.\n\n > Every time someone ...
Why is Europe so much focussing on going as "green" as possible, even while the most polluting areas are Asia, South America and Africa?	[ "Europe is setting an example which other nations can learn from. It would be hypocritical of Europe to denounce the waste and pollution in other areas of the world and make no effort to improve its own efficiency.", "Think global, but act local.\n\nWe can set an example, we have the will, money and resources to...
What would it look like if we could see radio waves?	[ "Phones and wireless access points would all glow, and their light would stream through walls like light through a lampshade. Radio towers would do the same, like distant lighthouses through a fog. All phones would be the exact same color, but the wireless access points would all be slightly different shades of the...
How come I can drink milk just fine during the day, but if I do it at night I wake up with horrible stomach pains?	[ "Maybe you're somewhat lactose intolerant. Since digestion slows down at night, it could be that your body doesn't produce enough lactase to digest the lactose sugar in milk. Perhaps your body has JUST enough lactase when your digestive system is most active during the day." ]
If user "data" is so valuable, how exactly do we define it's "ownership"?	[ "He who creates it and defends it, owns it.\n\nCompany data is created by the company, not by a user. data sets are created and collected by the company. Users don't create the dataset, they make the data by actions, but by agreement with the TOS, they hand over that data to the company." ]
Why do so many stores require a minimum amount of purchase for you to use your credit/debit card? (Usually a $10 minimum or so).	[ "The fees to operate the machine can usually seem exorbitant. Especially in smaller towns, you'll see some credit card reader companies charge a base fee per swipe and then a percent of total cost.\n\nBasically, if you spend less than $5, some places could technically lose money when all costs are accounted for.", ...
Does the human brain have a "refresh rate"?	[ "We haven't seen any significant evidence thus far to conclude that it does. \n\nPart of the issue is the brain just isn't organized enough for any kind of cohesive, system-wide refresh rate. That said, individual nerves have a resting period in between signals in which they are unable to fire (or at least it's mor...
How Priceline can have a name your own price option while other hotel sites dont	[ "They set up an agreement with properties to offer different levels of pricing for the same room types. They can list the same room inventory as costing $50, $75, or $100 and when you name your price they pull from the closest inventory and pay the difference. There are only a limited number at each price level how...
If the economy is getting better, why is it so difficult to get a job?	[ "To my knowledge we only solved the unemployment issue by creating low paying jobs, like technical and blue collar. But we didn't help the middle class which is the heart and soul of a countries economy. \n\n[Edit] to add-on this was what the last administration did. We have yet to see how the new administration wi...
How come Doctors don't get sick more often?	[ "First, I think it depends on the sort of medicine that you practice. If you're a specialist, like a cardiologist, you probably don't see so many cold and flu cases. If you're an ER or family medicine doc, that may be a different story (more on that in a bit).\n\nThere are protocols that medical staff like doctor...
How the Affordable Care Act will actually increase my insurance premiums by 56%?	[ "The specifics of any particular premium change are going to be complicated, but the biggest factor that the ACA would have to increase your premiums is by requiring a different standard of coverage. The ACA sets minimum standards for a plan to qualify and your plan may not have met those standards previously. Your...
What is the difference between "feels like" temperature and actual temperature?	[ "Not a professional but factor of humidity and windchill. The temperature may be 80 but if it's humid, it's going to feel much hotter. \n\nIt's it's 30 degrees and there's a strong wind. It will feel colder.", "'Feels like' temperature takes into account wind speeds and humidity to assess how the human body ac...
The difference between global warming and climate change if there's one?	[ "The terminology changed to be more broad. Global warming was what we figured out first, then someone went \"oh wait, because the planet is getting overall hotter, that makes the weather do weird things. It's now rainier over here than usual, drier over there than usual... and a couple spots are even snowier than...
How does a software company offering a "free student subscription" know you're a real student?	[ "The answers here are correct, but I want to add: Autodesk doesn't actually care a whole lot whether you're a student or not.\n\nAutodesk makes all its money selling software to businesses. These businesses can get in serious trouble for violating the EULA of their software (such as using a student version for busi...
Why do we still use propeller planes in the Air Force?	[ "Turboprop engines are far more fuel efficient than jet engines, and more reliable in unimproved areas with lots of dust, sand, grass, and rocks. So they are the engine of choice in applications where speed is not valued, but reliability and cost per mile is highly valued.", "they use less fuel and can fly slower...
Why can't the UN intervine in whats happening between Palestine and Israel?	[ "The UN doesn't have the kind of military force necessary to invade Israel - even if they managed to pass such a vote (exceedingly unlikely).\n\nMoreover, what would that accomplish? The Palestinians do not have a functional economy or government. They're almost entirely dependent on Israel for all of their infra...
Why is a broken leg a death sentence for a horse?	[ "Horses must be able to have even pressure on all 4 legs. They have very poor circulation in their legs and need their feet to be on the ground to keep the blood flowing properly. When you have poor circulation or none at all, tissue starts to die off. This is why horses must be able to stand on all 4 legs. If they...
Why/How can gas stations place a $125 hold on my account when I buy significantly less than that amount of gas?	[ "Credit card pre-authoritization-- it is how credit cards work. Gas is a metered sale.\n\nMost times when you shop at a merchant, you pay with your credit card and it is approved/declined on the spot. \"Pay first.\"\n\nGas stations, by habit allow you to fill up first then you pay-- the problem with this is if you ...
If blueberries are blue and blackberrys are black, why are strawberries not called redberries	[ "There are more berries (lingonberries, cranberries, etc.) that aren't named after colors than that are. So...maybe your question is \"why did we give a couple of berries names that are as bland as their color?\"\n\nStrawberries are frequently covered with straw during their overwinter process to keep them warm en...
Why hackers can access database from big companies but can't access Google's search algorithm?	[ "Are you so certain that people have not hacked or have access to these materials? I'm not so certain. \n\nHackers don't announce their hacks 999/1000 times. They don't make it public. Why would they? That just means people will know they got hacked, fix the problem, and try to find the hacker. Or the hacker could ...
Charging time?	[ "This is a tricky question to answer, because the physics involved with modern Li-ion batteries is complex, but I'll try to make a simple analogy.\n\nWhen you charge a battery, you are applying a voltage across the anode-cathode gap that's causing the Li ions in the medium to migrate back to their starting position...
Why does each piece of a broken mirror have its own reflection	[ "When you break a mirror, you multiple smaller mirrors. Unless those mirrors are oriented in exactly the same way, the light will bounce off of them at a different angle and give you a different mirrored image. If they are oriented the the same way, they will still reflect the same angle back at you.", "> [...]...
Why is it that after drinking several bottles of water throughout the day, that I wake up from a warm bed feeling severely dehydrated?	[ "Sounds like you are just sweating excessively in your sleep. Try sleeping in those cold beds?" ]
With today's modern audio technology, such as ISDN, why is the sound quality still so poor in phone conversations?	[ "New phone tech has to be backwards compatible with old phone tech, which means the quality is on par with old phone tech." ]
why do people get so passionate about their sport's team when they are technically not affiliated with them?	[ "from what I've seen, a lot of people think of their sports team as direct representation of the region they live in/are from, and are trained to see it that way since childhood (if their family are also big into the team). you see this a lot with teams based in smaller cities, like the Green Bay packers, because a...
Why can't we attach a 100X microscope to the eye piece of a 100X telescope and get a 10000X zoom?	[ "It's really hard to answer this in an ELI5 manner, there's a lot of complex optical physics in play. \n\nWhat is important in optical systems, particularly when you are talking about 'zoom' is resolution. By resolution, I don't mean how many pixels are on your screen, or how many megapixels the camera has. It is, ...
Why is it when i'm in a completely silent room somehow I can hear some buzzing?	[ "What's going on here is tied up in the function of your brain. The human brain is an immense pattern-matcher, taking in external sensation and giving it meaning, matching it to other things it knows. It's not used to getting nothing from its environment. The human brain gets so starved for sensory input that it ...
Why do all the planets in our Solar System orbit the sun in a latitudinal path/on the same plane?	[ "A nebula ie a cloud of gas starts to collapse. The conservation of angular momentum result in that is spins. If you have a spinning cloud with particles that travel in random direction they start to collide. A spinning direction will be dominant and a disc start to form\n\n Particles that have a another orbit then...
Why can't a brute force attack break cryptography key?	[ "For simplicity sake, lets say your password can be any letter, uppercase or lowercase, both are different, and the numbers 0 through 9.\n\nThat gives us a total of 62 different possible numbers we can choose from, in reality, it is a bit more with added symbols, but this is just for simplicity sake and proof of co...
Terminal Cancer	[ "Stage IV means that the cancer has metastasized to other organs in the body (the lung in this case). By this point, it's too wide-spread to effectively deal with. You can't cut out the tumours cause they tend to be numerous, and the cancer cells are using your body's lymphatic system as a highway to transport itse...
Why do I always have lint in my belly button and on my balls? And why is it always blue?	[ "The winner of the Ig Nobel Prize in 2002 did a survey on Belly Button lint. _URL_0_\nThe results show why people get lint and how different body types, skin colors, and shirts change the lint! \nAlso, I read somewhere that blue is a common color for lint because the dark threads in blue clothing overpowers light...
How did we program computers with a concept of time?	[ "Computers have a [crystal oscillator](_URL_0_), an electronic component that resonates at a fixed rate. The same type of component is used in ordinary quartz clocks.", "In order to create a clock you need to have two things:\n\n1. an anchor time. E.G. - what time is it \"right now\". \n2. a heartbeat with a pr...
Amazon Web Services	[ "Reddit is an AWS customer.\n\nIt is basically cloud computing, see here: _URL_1_\n\nor here: _URL_0_\n\nThe Basics\nWhether you are running applications that share photos to millions of mobile users or you’re supporting the critical operations of your business, the “cloud” provides rapid access to flexible and low...
How do those bladeless fans work?	[ "The pedestal of the fan contains a brushless electric motor that takes in air and feeds it into the circular tube. Air flows along the inside of the device until it reaches a slit inside the tube. This provides the basic airflow that creates the breeze you'd feel if you stood in front of the fan. Dyson claims that...
Why is it that my PC can run high-end games easily, but is unable to emulate Nintendo DS games smoothly?	[ "You can think of the emulator as a live translator. The DS game tells the emulator what to do, and because it's supposed to run on Nintendo hardware, the language it speaks is Nintendo specific. The emulator then has to put the instruction into terms that the PC can understand.\n\n\nThis works fine if two language...
Why does Saudi Arabia oppose Assad's regime in Syria?	[ "Isn't this a shia vs sunni thing? Iran-Assad-Hizbullah are shia, KSA and the others are sunni.", "The Saudis want to build a natural gas pipeline to Europe that has to go through Syria.\n\nAssad is supported by Russians. The Russians have their own gas pipeline to Europe. Russia uses its control over Europe's n...
Why does fusion release energy?	[ "Ummm, the energy released during fission is not, like, stored inside the nucleus of the atom, but it's actually (some part of) the nuclear mass, which gets transformed into energy.\n This is called as \"mass defect\", and the same is the cause of release of energy during fusion .i. e. When two nuclei fuse under pr...
What will happen if cat will have sex with dog and get pregnant?	[ "You obviously haven't seen the show catdog.. huh?\n\nEdit: spelling", "Not possible. Cats and dogs have genetics that are too different for one to even get pregnant from the other.", "Your question doesn't make sense. While a cat and a dog could have sex, neither could become pregnant from it. They have differ...
Why did the automotive industry choose 12v systems over other voltages?	[ "A very long time ago automotive electrical systems were in fact 6 Volts. Someone figured out that if the voltage was doubled the current would be halved and thus allowing smaller Gage wire to be used and a significant cost savings to be realized. Wait for it...it won't be too much longer and we will be seeing 24 V...
How does shifting gears on a bicycle work?	[ "On modern bikes there's two major manufacturers - Shimano and SRAM. There's also Campagnolo, but their market share is diminishing in all but some European companies. I mention this because in recent years these two have gone with different (and opposite) ways of implementing their drivetrain systems. Up until r...
Why are a bunch of boards closed to the public like /r gaming?	[ "Reddit fired Victoria, the wonderful lady who coordinated a lot of the celebrity AMAs in /r/iama. iama and a few other subs are going down because this actually really fucks the way they operate. The others are going down in a show of solidarity." ]
How do we know that all snowflakes are different?	[ "We really don't know. We base it on simple math and probability. It's so unlikely that we can say with high probability that every one of them is different.", "this is a similar question to asking, \"how do we know every human ever has different fingerprints?\" \n\nit is impossible to know for sure, but based on...
Why do grocery stores let you do self-checkout when that makes it so easy to steal?	[ "Grocery stores keep track of the estimated cost of theft. They have almost certainly determined that the cost savings associated with self-checkout are greater than any incremental increase in the cost of theft.", "* they usually have someone there monitoring against theft\n* they usually only allow a smaller am...
I understand why someone wouldn't want the government to ban gun sales, but what reasons do they have to be against stronger background checks prior to a purchase of a gun?	[ "If the government tracks gun sales, they would by extension track gun ownership (or at least new gun ownership). People are uncomfortable with the government knowing what guns they own.", "Its more complicated than that. If I want to let my good friend or family member borrow my hunting rifle why should we both...
Why are we not harnessing solar energy from unpopulated areas?	[ "Cost. Plus the further away the power generation is, the more is lost in transferring that power over long distances (and also the larger the cost to set up the power lines). Plus, solar panels can't run 100% of the time, so require a ton of batteries, and both the solar panels and the batteries require a lot of...
Polyphasic sleep.	[ "Lol somehow I read this as \"polyphasic sheep\"...\n\nCarry on", "There's a specific phase of sleep known as REM sleep, occupying about 1/4 of your total sleeping time. It seems to cause most of the \"rested\" feeling you get, and you enter it more quickly if you're sleep deprived. So if you force sleep deprivat...
What exactly was FDR's New Deal, and what did it do for the US?	[ "The New Deal was a response to the problems created by the Great Depression. To put it simply, a lot of government agencies and programs were created. Some of the more controversial programs allowed for labor unions, regulations on child labor, maximum hour laws, and minimum wage laws. At the time, these were cont...
Why is the Wilhelm scream still used?	[ "It's an inside joke among the audio mixing people in the business.\n\nThey put it in every movie, tv show, cartoon, and commercial where it's even remotely appropriate just for laughs.", "At this point it's almost an easter egg, placed in movies to see if the viewer can catch it. Sure, there are thousands of oth...
Why is it a problem that Cuba is communist?	[ "The issue is not that they were communist, it is that they were allies with the USSR and are allies with Russia. \n\nRussia is still our biggest enemy and we are still having proxy wars against them. The Cold War officially ended when the USSR collapsed, but in most practical purposes it is still going.", "Back ...
The Color Wheel	[ "the colour wheel is not for scientific purposes. Artists and designers use colour wheels to create and find shades and hues of colour using blends of the primary colours, which are red, blue and yellow (those cannot be made by mixing other colours together) when mixed these three colours essentially can make any c...
Why do people hold their hands "palm up" when it is raining?	[ "The palm of your hand is more sensative than the back.", "So we are just reaching to see what it feels like, how hard is it? what temperature is it?\n\n\nwe do the same thing when testing the water in our shower, or in a sink." ]
Wall Street Crash of 1929	[ "You have money. And you want to invest them in stocks. You do, and stocks do well, so you sell them to get your money back plus some more.\n\nRise and repeat.\n\nNow what happens when you take a bank loan. And use that money to invest in stocks. Because you think that you can invest money you don't really have, do...
can the body repair a rupture of a spinal disk?	[ "So I ruptured the disk in my neck. The doctor explained it like this:\n\nThe disk is like a krispy Kreme doughnut. When it ruptures the jam inside spills out. It could split on the inside or on the outside. On the outside is not such a problem. However on the inside it can directly apply pressure to the nerve...
How does your computer removes files when you empty your local trash ?	[ "Computer files aren't really ever \"Removed\" or \"deleted\", they are just marked to be overwritten on your hdd. When you first delete something it is moved into the recycle or trash bin. Its kinda like purgatory for files; they're not marked to be overwritten, yet also cant be used unless restored. Once you empt...
How is the time relative ?	[ "Whoo boy, this is tough to explain simply, but I'll do my best.\n\nSuppose you threw a ball at 50 mph to your friend. To both of you, standing still, the ball is traveling 50 mph. But suppose you were riding in a car down the road at 20 mph, and you threw the ball at your friend standing in front of the car. In th...
Why does standing in one place for twenty minutes make my feet hurt more than walking for an hour?	[ "Standing up straight still requires your muscles to do work. But it's \"static' work which means it's the exact same muscles doing the exact same thing over and over again without being given a chance to relax and recover\n\nWhen you are walking around you are using a series of difference muscles. Even though th...

Subsets and Splits

No community queries yet

The top public SQL queries from the community will appear here once available.