Subset (10)

eli5 · 25k rows

Split (1)

train · 25k rows

query stringlengths 20 300	positive listlengths 1 1	negative listlengths 1 1
Can you get tired just thinking?	[ "I would go with yes, as driving for 10+ hours can be rather exhausting as well, and all you're doing there is effectively sitting and moving your hands slightly every few minutes." ]	[ "Some of it: A lot of it has to do with the chemicals released after ejaculation: \"men release a cocktail of brain chemicals, including norepinephrine, serotonin, oxytocin, vasopressin, nitric oxide (NO), and the hormone prolactin\". [ref](_URL_0_). These chemicals make us sleepy afterward. So doing this sever...
Why are there different types of clouds?	[ "It's completely dependent on atmospheric conditions. Humidity, temperature, air pressure, etc. all influence if water vapor will condense to form clouds and how. There is no randomness, but instead it's a very complex system as the conditions in any point in the atmosphere may be slightly different than conditions...	[ "Coins are very rarely counterfeited, so there is little risk in having a variety of designs. Notes are often counterfeited, so having a variety of notes makes detection more difficult. A shopkeeper may not know all the designs and accept a bogus one by accident." ]
If you drop your a phone or something else with a glass screen and the screen doesn't crack, does it have a higher chance of shattering the next time you drop it?	[ "TL;DR: Yes. Materials Engineer here...Your brand new phone screen has billions of cracks in it. They're just really really really small. Now, anytime you do something to the phone (drop it, sit on it, bump your keys against it, whatever) you're putting stress on those cracks. If the stress is over a certain thres...	[ "Imagine you have an unlimited supply of BBs in a container. This container has an opening that allows the BBs to stream out at a very fast rate, specifically, 864,000,000 in a day (chosen to make math easy). Now imagine you have a plate below the container that all the BBs land on. This plate can count the BBs as ...
How does collegiate recruiting work?	[ "You don't need to vet a million players, nor see all of them. There is a weird misconception that talent is uncommon, and this applies to either sports, or general recruitment. If there are 1 million players, and you only want to take the best 1% then that is still 10,000 people, and you have space for like 50. I...	[ "I encourage you to check out this youtube video _URL_0_ Explains it better than I can" ]
Where does our atmospheric oxygen come from?	[ "I'll hazard a guess and say that it's not that you're incorrect, but rather that the professor thought that the mention of the source of atmospheric oxygen was not appropriate for the talk. I don't know what level you're at, or what level you'll be presenting to, but based on the use of the word \"populistic,\" it...	[ "[You breathe it right back out](_URL_0_). Some is diffused in the blood." ]
What happened to make LEDs so cheap recently?	[ "The advancement happened several years ago when scientists developed efficient blue LEDs. They won a Nobel Prize for it. RCA had made blue LEDs decades ago but they were low power and inefficient. The blue light excites a phosphor which emits red/green (AKA yellow) light. Some of the blue light leaks out and when ...	[ "It's called the Baader-Meinhof phenomenon. It happens with band-names, artists and types of food too. Our attention is quite selective and we tend to subconsciously ignore things we don't understand. After we learn it we have confirmation bias where it seems that something we've just learned about is all of a sudd...
Why are newborn infants vastly inferior to newborns of other species?	[ "Generally, you have noticed the difference between precocial and altricial newborns, not between \"humans\" and \"other species\". =) Altricial young (like cats, dogs, rats, many species of birds, etc) require a lot of parental care. There are plenty of examples of animals that cannot see, hear, walk, feed themsel...	[ "Natives weren't of lower status than Africans (at least by the late 16th/17th centuries). Natives were subjects of the King and were afforded substantial legal/political rights and autonomies that African descendants didn't have as much access to (at least in theory... in practice, local monopolies and distributio...
How can two people in the same environment feel completely different temperatures?	[ "Because you produce different amounts of heat. Your body doesn't actually feel temperature, it feels the rate at which it is losing heat. If you aren't losing heat fast enough then you feel hot, if you are losing it too fast then you feel cold. Tons of different factors into heat loss like insulation and metabol...	[ "As No_Easy_Buckets said \"Variance in skin color is due to a thing called melanin.\"; but one thing to bare in mind is that humans really kind of naked mammals. Most mammals have fur or hair covering their bodies. If you consider our hair color and imagine humans being covered with hair then you might have the ran...
How are air bubbles formed on the sides of glasses filled with a non-carbonated beverage?	[ "Non-carbonated beverages may also have dissolved gases in them, albeit not as much as carbonated ones. The walls of the glass usually have impurities such as dust or even scratches on them that act as nucleation sites for the dissolved gases to grow on as bubbles." ]	[ "Inflatable beach balls are mostly empty space, too. The thing is, light bounces off the outside surface of the beach ball and back into our eyes, just like it bounces off the electrons around an atom's nucleus." ]
Why aren't rotational kinetic energy and translational kinetic energy as fundamentally distinct from one another as angular momentum and linear momentum?	[ "An object moving through space at constant velocity without rotating has angular momentum in all reference frames where it doesn't move through the origin. Be careful with statements that depend on an arbitrary reference frame." ]	[ "Potassium-40 doesn't undergo nuclear fission, only various forms of beta decay. In principle you could use a shitload of bananas as a radioisotope thermoelectric generator or a betavoltaic, but you'd need basically a mountain-sized pile of bananas to get something appreciable. Better to eat the banana and use the ...
Why did it take so long for console games to run on 60fps while pc has this option for decades?	[ "PC performance is limited by your budget. You could go build an insane $10000 rig right now to run games at 4k, 120fps if you wanted to. Consoles need to be cost effective, and historically their hardware is already somewhat middling and out of date when they're released. The console manufacturers have no interest...	[ "A couple reasons. In the United States, the burden of proof is on the prosecutor to show that the defendant committed the crime. This \"presumption of innocence\" makes preparing a case hard work, because to win, the prosecutor has to convince 12 regular people that, with absolutely no doubt, the defendant commit...
Are atolls floating or are they connected to the submerged volcanos?	[ "They're remnants of extinct volcanoes. When a volcanic island breaches the surface, coral reefs will form in the shallow waters around the rim. Once the volcano goes extinct the ash cone quickly erodes away, leaving behind the ring of reefs, which can form the core of sandy islands." ]	[ "During WWII, the US needed a lot of aluminum for building bomber and fighter planes. The process to refine aluminum from bauxite uses huge amounts of electricity. To generate enough electricity, dams were installed through a large part of the Tennessee Valley. Water flowing through the dams turns generators to pr...
Question about a light clock, speed of light and relativity.	[ "> > 1) so does the particle not hit each surface every second now? So the clock is no longer ticking seconds, but something longer? In the frame of the ship, nothing changes and the light pulse still travels straight between 2 points, but to a viewer OUTSIDE, yes time dilates. > > 2) to an outside viewer, since t...	[ "You've discovered [the twin paradox](_URL_0_). The answer is that you can't have the spaceships \"suddenly\" be at rest with each other. Either one or both must undergo acceleration. In the case of one spaceship accelerating and becoming at rest with the other, the accelerating spaceship has its time dilated. If t...
Who pays for advertisements on the sketchy side of the internet? (e.g. your flash player is broken, or singles in your area want on you) Do they actually make money on these?	[ "The people don't make money off the adds themselves. They make money when say your typical 70 year old grandma or 5 year old kid click on the ad and download (and install) the program. Once installed these programs take all kinds of personal information (including credit card numbers) and can actually take control...	[ "I haven't been to the movies in a while, but AFAIK those shorts are all created by novice film enthusiasts. Coke has a contest, and chooses which one(s) to play." ]
What makes us see "white"?	[ "When all three colors of cones are excited equally, you see that as white. If you added some extra red light, you would see it as light red. If you then added extra green and blue to balance it out, it would excite all the cones equally again, and it would look like brighter white. If you added more light at the r...	[ "Your brain cells require a lot of energy to work at full capacity, and your visual processing center is a fairly large portion of your brain (relative to the amount of space your eyes take up on your body). Put simply, your brain can choose which incoming sensory information is worth dedicating chemical energy to ...
why is the nails on the chalk board sound less irritating to me when it's my nails creating it?	[ "I've read that the frequency of nails on chalkboard is very close to the frequency of the warning cries of macaque monkeys. So in short, it's a vestigial biological response to perceived danger." ]	[ "Basically, you have to be weaker if you want the kind of fine muscle control we have. Chimps and gorillas physically could not do the kinds of things we can do with our hands - sculpture, art, writing, etc. - because of the way their muscles are attached to their bones. They have better leverage because their an...
How come, when we rub our eyes hard enough we see those weird colors and patterns?	[ "What about those really faint, amoeba-like, transparent globs floating around your vision? They look like microbes as seen underneath a microscope. It's kinda hard to describe but they're definitely there. Debris floating on the cornea??" ]	[ "Actually, Isaac Newton studied the exact thing you are talking about. It's called a phosphene, and it's created by the stimulation of the retina by means other than light, such as a magnetic field or an electric current. In your case, it's simply the physical pressure exerted on your retina. [Source](_URL_1_)" ]
what's the difference between antibacterial soap, and just soap?	[ "Regular soap doesn't necessarily kill germs, but it allows water to wash them away. All soap contains antibacterial agents, usually triclosan, but only enough to keep the soap from getting fucked up. Antibacterial soap contains more. There isn't much evidence for regular antibacterial soap being any more effectiv...	[ "Imagine you are made of genetic soup. Some people have ingredients that just don't go well together and make the soup taste bad. But that's ok, because when you have a kid, we just take some of my soup and some of my wife's soup and pour it in together. So even though my soup has some bad ingredients, her ingredie...
Is bamboo a viable alternative to trees for paper goods; e.g. toilet paper, paper towels, etc	[ "While it is possible to make paper pulp from bamboo and this is being done by some paper mills in Eastern Asia, there are different types of cellulose fibers from the different types of plants. Even different types of trees produce different paper. For example newspaper and toilet paper are very different from eac...	[ "I suspect the claim is from a \"study\" by authors Robert and Brenda Vale called \"Time to Eat the Dog? The Real Guide to Sustainable Living\" The \"study\" was privately done, not by institutions or with peer-reviewed papers as far as I know. Also, Robert and Brenda Vale have no real affiliation with the biology...
Resonance with Neptune	[ "_URL_0_ It means that the 2 objects exert a regular, gravitational influence on one another, due to the fact that their orbits are related. In this case, it's because Pluto completes 2 orbits in the time Saturn completes 3." ]	[ "Nothing particularly interesting. Mercury and Earth were aligned today." ]
How do video game engines work and how are they built? How are they programmed to run on different hardware?	[ "Ok so, in the vast majority of games, you use arrow keys (or WASD) to move in various directions. Now without an engine, you would have to write the full code for all of this, e.g. If(KeyPressed = UP) then Move(Forward). Note that this is a gross over simplification, the real programming would involve changing the...	[ "It doesn't know. Most pain killers you use work in the same or similar ways, in that they reduce inflammation. The differences in treatment is based off of strength of the painkiller or whether it can cross certain barriers in your body (to get to your joints or brain). People also react differently to different d...
My custard/failed ice cream has been in the freezer for over 48 hours and is still liquid. How?	[ "When you add sugar it keeps a chunk (about a fifth) of the water from freezing... in short it lowers the freezing point of your mix. Crank up (err .. down) your freezer a few degrees, or add some more milk to balance out the sugar." ]	[ "The lava at the leading edge isn't the old lava. As the lava flow progresses the surface cools and solidifies. This surface is great at insulating the lava beneath (in fact, if the upper surface solidifies sufficiently this is how you form lava tubes, which can insulate the underlying lava so that flows can travel...
Is there an acceptable number of cigarettes one can smoke per day, where the probability of increasing health risks is rather low?	[ "[Research paper](_URL_1_) Conclusions: In both sexes, smoking 1–4 cigarettes per day was associated with a significantly higher risk of dying from ischaemic heart disease and from all causes, and from lung cancer in women. So even 1-4 cigarettes a day won't keep the probability of increasing health risks \"ra...	[ "pick one door. then before anything is opened, do you want the one you picked or the other two? That is essentially the question. Monty knows which door has the big prize and never reveals that one. Try this. there are 100 doors. you pick one. ( say it's #29.) Monty knows what door it is. He the opens 1,2,3, . . ...
What's arc seconds when it comes to Astronomy?	[ "When you divide a circle, you divide it into degrees, giving the circle 360 degrees (You could also divide it into radians, but that's a separate story) What if you need a more precise measurement than a degree? You can divide each degree into 60 arcminutes. If you need something more precise than that, you can di...	[ "You're right to be confused. It is 100% wrong as depicted in the movie, and a lot of people of wondered about why they made such a grave error considering the rest of the movie was somewhat realistic. It is likely that the reason this happens in the movie is that it makes things more dramatic. Artistic license i...
Have we ever observed a star pass behind a black hole while orbiting it? Like a star/black hole eclipse? Is observing this phenomenon even possible?	[ "This has been observed at least once. [See here](_URL_0_). However, we don't have any sweet images of this happening, we just see a periodic dip in the x-ray intensity." ]	[ "You seem to be describing a variant of the [ladder paradox](_URL_0_), just using a train and tunnel instead of a ladder and a garage, he he. > What does the outside observer see? The outside observer sees the front guillotine make a cut, then later after the train has passed further through the tunnel, the back g...
How does the brain know where to grow new nerves into a transplanted organ, such as hands, fingers, or heart?	[ "It's not a brain work to grow nerves. Surgeons manually connect main nerves in transplanted organs, and smaller one just grow themselves. Part of them won't connect to anything, but part will connect with nerves in new organ. Brain will just learn what reaction will be given if he send signal to this nerves and \...	[ "Evolution doesn’t routinely do luxuries. Can your current form and life-processes keep you alive in your current environment long enough to breed the next generation? Yes? Then you are “successful enough”. Rinse, repeat, refine through those generations. If the need to regrow limbs and organs was the only thing ke...
Are there "lone stars" wandering between galaxies? Have we found any?	[ "Yes, they're called intergalactic stars: _URL_0_ They're thought to primarily come from galaxy collisions." ]	[ "I just read the article, and Witzel isn't even telling a just-so story -- he's telling an \"it's so whether it's so or not\" story. Take a look at this statement, as just one example among many: > Apart from the feature of drift, certain motifs that widely appear in Laurasian and non-Laurasian mythologies may bel...
Why does certain types of music trigger different emotional reactions?	[ "I would suspect it has everything to do with the fact that hearing itself is a sense that is on 24/7 since you’re born and every day triggers emotional reactions. The tone that people say things in has an impact on your emotional reactions for example, the way things sound in your surrounding has an impact on you...	[ "I am by no way at all a scientist or veterinarian but I have been working with dogs for over a decade. I spent a lot of time as a dog handler is a large off leash facility and the first thing I taught myself was to leave everything at the door before I went in. If something was happening in my personal life or my ...
Why do some people suddenly feel so sad without any reason? is it just bad brain chemistry?	[ "If anybody tells you that they know for sure, they're lying. The human brain is insanely complicated. How we feel is possibly tied to so many different things in our body and environment, and is so widely different across individuals that we just can't point and say what's going on with any real certainty. Psychol...	[ "Soooo many things. Temperature, current water AND salt levels in your body, your diet (not just week-to-week, but also day-to-day, and sometimes meal-to-meal), hormones, exercise, current and previous health routines, sleep patterns, and the consistency of all of these factors. If you want to start having more \"g...
How underwater tunnels for cars, trains, etc are made.	[ "There are three established ways of making tunnels. 1. Open a trench, build the structure using a series of watertight cofferdams where you can actually work in the dry, finish the structure and cover it up with the earth you initially moved. (Example: Holland Tunnel in New York). 2. Open a trench, sink prefabri...	[ "How Stuff Works covered this in one of their podcasts, it was pretty interesting. Here's the link if you're still interested. _URL_0_" ]
How can a person who's married to an American citizen be deported?	[ "If the spouse is a legal resident, it's simple, register with the government and change their status. If the spouse is undocumented, any attempt to change the status will likely result in deportation proceedings. There is no simple way to change from undocumented to legal status without the spouse leaving the coun...	[ "There's a gigantic backlog of applications to process. Our laws are confusing to say the least. We don't have nearly enough people working on it, and the ones we do have are under-funded. And we change the rules a lot. so anyone who applied has to be able to account for that difference, making it take even longer....
What is the difference between strong and weak nuclear forces?	[ "Simply put, the strong force binds together quarks (forming protons, neutrons, nuclei, mesons, and any other baryons). Gluons are the force-carriers (bosons) for the strong force. The weak force causes quarks to change into other quarks (flavor change). This in turn leads to decay and fusion of the hadrons made up...	[ "Yes. This was first [tested over the Pacific in 1962](_URL_1_) and the [EMP](_URL_0_) did some damage in Hawaii, 900 miles away. A nuke detonated in the right place could affect most of a continent. It's caused by gamma radiation from the nuke interacting with Earth's atmosphere and magnetic field." ]
Can wood exist in a liquid form?	[ "You have to realise that wood is a material and not a compound. A compound is a molecule, such as glucose, or in the case of wood, which is mostly cellulose and lignin. These can exist in liquid form (albeit in a vacuum to avoid oxidation). Once you start heating wood up, in a vacuum, you'd eventually get a liquid...	[ "This is pretty much how we preserve food (think about packaged cakes which last for months on the shelf). The bread would dry out very quickly in vacuo as the water would evaporate and be pumped out by the vacuum pump. This is why twinkles and the like are packaged with argon or nitrogen gas. The proteins in the b...
What's the point of a company owning and operating a number of brands which are in competition?	[ "People like choice, so you want to diversify your brands and products. But you also want to make money no matter what the customer chooses. Additionally, most (all) of these brands were purchased after they'd been built... Volkswagon might not find it useful to build a new brand of exotic sports cars but they'd g...	[ "When banks or whoever else might have a bunch of people owing them money decide that they're never going to see enough money from the debtees for it to be worth it - so basically when someone isn't paying any of the debt off for months and they can't seem to get it by force - they offer to sell the debt off to oth...
Are there any books regarding indigenous peoples of the extreme north?	[ "Check out Yuri Slezkine,[ Arctic Mirrors: Russia and the Small Peoples of the North](_URL_0_)" ]	[ "Check out 'East of the Sun'. It is a history of Russian conquest of Siberia from the middle ages to Soviet times. _URL_0_" ]
what is the Novikov self-consistency principle?	[ "Basically it's a view of time travel in which all the time travel that has ever happened is already factored into how the present is. So if you went back in time and say, tried to kill Hitler, Hitler's very existence shows that you already failed or that your involvement in the past was part of his creation. You c...	[ "Check out Yuri Slezkine,[ Arctic Mirrors: Russia and the Small Peoples of the North](_URL_0_)" ]
What is that high pitched sound I sometimes hear near electrical devices?	[ "High pitches are usually the first ones humans lose hearing in - look into the Mosquito Ringtone, a pitch so high that most people over twenty-five are unable to hear it. It was a fad for kids to set it as their ringtone. If it's a constant sound (like after an explosion) then that's called Tinnitus and is actual...	[ "You could have [tinnitus](_URL_0_). You should see a doctor if you want any further information, since asking for medical advice is not allowed in this forum." ]
Saturday Reading and Research \| November 07, 2015	[ "I just finished with [Sveinsson's The Folk-Stories of Iceland](_URL_0_). In a previous century I tried to muddle my way through the Icelandic original, which appeared in 1940. It has been translated and to a certain extent updated, appearing in 2003 - and now available as a PDF with the link provided. The work is...	[ "Some questions to clarify OP's premise: Did the NKVD do regular searches of civilian homes or would there have had to be suspicion of a crime? Would that suspicion need to be based on anything substantial? And what qualifies as \"forbidden Western literature\"?" ]
Why are spaceships enroute back to Earth have an oblong edge? Wouldn't a sharp edge be better?	[ "> Wider edge = more friction = more heat. Also, wider edge = more friction = slowing down more. This is the important bit. Objects in orbit have a ton of momentum, and you need to slow it down enough that the parachute isn't ripped to shreds once it's deployed." ]	[ "As long as we're talking about this, another interesting tidbit: Adjectives have an order. For instance, we say \"Little iron key\", which sounds normal, but saying \"Iron little key\" doesn't. According to the Cambridge Dictionary, the order goes: Opinion (unusual), size (long), quality (rough), shape (round), a...
Why can’t we just use the natural flow of rivers to generate electricity without dams?	[ "Damming the river raises its elevation, higher elevation = more power. Also, it allows us to use the dammed lake as a sort of “battery”, increasing the flow to the generators when more power is needed and decreasing it when less is needed." ]	[ "It's way, way, WAY, too expensive. The power plant alone would probably be more expensive than the entire lifetime cost of an average bulk carrier. Not to mention the insane mess of regulation that is involved with running a nuclear reactor. Basically, big ships run on bunker fuel, and bunker fuel is ludicrously...
Identity theft, and how it works.	[ "Identity theft is nothing more than stealing someones bank card and using it, or hijacking their online accounts with credit cards attached to buy stuff. Generally this is done through stolen credit cards, keyloggers on computers etc. Generally its all done online or in ways where an ID isnt needed, so looking lik...	[ "Follow on question: how good/reliable/accurate were wanted ads and descriptions? How often were the wrong people brought in from far away only to be released when recognized as not the person being sought?" ]
After I swim in a chlorinated pool for an hour and a half, why does the water I drink taste like chlorine water?	[ "I would imagine you have chlorine byproducts that have dried on your lips and possibly in your mouth depending on if you swallowed any water as you swam. Then when you drink, those redissolve into whatever you're drinking. Should've showered thoroughly and maybe brushed your teeth first! Edited to add: Smell is a...	[ "Neural adaption. Basically, your brain only cares about a change in stimuli rather than every stimulus that comes along. Your brain knows how to ignore a stimulus if it isn't changing. So, if you are tasting/feeling the same thing all the time, your brain is going to ignore it." ]
What are Room Escapes that people are playing/doing?	[ "It's a group puzzle-solving event. You and several other people are \"locked\" in a room (you can leave whenever you want, but it doesn't count as a successful \"escape\" unless you use the correct code to unlock the door instead of the \"I just want to leave\" button). The room contains a series of interrelated l...	[ "I was curious about this as well, so I did some google-fu and found some results. This is all secondhand so take it with a grain of salt. It seems that the stations contract survey companies to get a rough estimate based on a sample population in the area. Arbitron is one of those companies. How do they do it? The...
How do planes have Wi-Fi while in flight?	[ "They either connect to cellular networks or via satellite if the flight is out over water. Other than that, it's just like wifi at home. You have a router and a wifi access point that everyone connects to." ]	[ "Because is costs them money to bring that signal to you. Why does a gas station charge you 99 cents for a bottle of water when it falls out of the sky for free?" ]
Why do psychedelics seem to so often induce a spiritual/religious experience?	[ "I'm not sure it's very well studied, but from personal experience there's a reason they're called \"entheogens\". [This](_URL_1_) may have some of the information you're looking for; it cites a study showing that connection between disparate brain regions increase during magic mushroom trips. [This](_URL_0_) looks...	[ "The first thing that comes to mind is the story of Constantine's conversion. The story goes that right before a great battle for control of Rome where he's heavily outnumbered, Constantine has a dream. In it he sees a cross and is told \"With this sign, you will counter.\" He paints the symbol on his troops shield...
If a tree were grown in a controlled environment with no seasonal variations, would it still have annual rings?	[ "I actually asked this same exact question here a while back. [Here is my thread.](_URL_0_)" ]	[ "Soooo many things. Temperature, current water AND salt levels in your body, your diet (not just week-to-week, but also day-to-day, and sometimes meal-to-meal), hormones, exercise, current and previous health routines, sleep patterns, and the consistency of all of these factors. If you want to start having more \"g...
Why do things seem to last longer the first time we experience them?	[ "The human brain is great at recognizing patterns and is very used to making predictions about the environment. For example, due your experience, when you're walking in the street your brain tells you \"people are walking in a certain direction and they're going to keep doing so\". When you experience something new...	[ "It is much more complicated than that, and is a very active area of research. A professor at my school, David Eagleman, studies this stuff. He's a complete badass, check him out: _URL_0_ edit: one of his famous experiments involves using magnetic energy to slow the propagation of some signals in the brain, and i...
Why do people say to seek shelter in buildings in case of a nuclear explosion? Wouldn’t the building collapse on top of you?	[ "Well, the alternative is standing outside and getting microwaved by the blast... There is a risk of the building collapsing but if the building and you survive you'll be in a slightly better place than if you were in the open air. There are also public designated fallout shelters that are reinforced / meant for s...	[ "Media companies \"Nuking\" torrent files with data. Nuking basically means they put some kind of trojan horse in a movie/video game file, so when you download it, they can track it and report you to your ISP." ]
Why exactly doesn't sound travel as fast as light?	[ "Because they are two completely different things. Light is this weird as hell quantum mechanical thing that acts like a particle and a wave at the same time. Explaining the very nature of light is difficult without going into the nature of how the universe works. Sound is just particles bumping into each other. Ho...	[ "It kind of does. Picture and sound are actually recorded quiet separately. Usually they're literally recorded separately — using separate machines — but sometimes they're recorded in the camera but using separate recording mechanisms. What matters is just that picture and sound end up synchronized. The fundame...
Why does boron tri-fluoride not form dative covalent bonds?	[ "The bond energy in BF3 is 613 kJ*mol, very stable. A dative bond would form between BF3 and NH3 for example, however the bonding arrangement in BF3 is a little more complicated and involves MO theory. From \"Descriptive Inorganic Chemistry\", Rayner-Canham and Overton, 6th ed pg 231 \"The boron atom has an empty 2...	[ "What that means is that there are no official diplomatic relations. No ambassador, no embassy, etc. There are always back-channel relationships between members of governments even when no official relationship exists. Often a third party country (like Switzerland) serves as a neutral go-between for official dipl...
What is the pH of our drinking water?	[ "Depends on where you are. Typically some ions are mixed into drinking water so that it doesn't leach from pipes or your bones. For example, SF area is pretty good at keeping drinking water at about 6.8, but water near Reno is not uncommon to reach like 8.6. Some places even have pH that varies based on things like...	[ "The Richter scale is logarithmic, meaning with every increase, the quake gets 10 times more powerful (power being defined as the ratio of the amplitude of the seismic waves to an arbitrary, minor amplitude). But when the Richter scale was invented, sensors weren't as precise and quakes below 1 could not be detecte...
why do we have pubic hair?	[ "To make you stinkier. One of the ways that mammals communicate is through smell. One of the most important things we communicate is sexual compatibility/availability. There is a running theory that people with different MHC genes (that control a big part of your immune system) smell good to each other, while peopl...	[ "its not convenient. do everyone a favor and trim your bush." ]
Why large corporations get government bailouts, while small companies go under?	[ "I don't think we should ever bailout any companies but typically it's to save jobs and help the economy. A factory that hires thousands of workers in your state is more important economically for the region than one that hires a 100." ]	[ "Let's say toll roads are run by Wal Mart. They then offer a discount - you can drive to Wal Mart for free, but still have to pay a toll when you go anywhere else. Sounds good, right? But then next year they double or triple the toll. Soon you can't afford to shop anywhere EXCEPT WalMart. Every other store then go...
Why is there an absolute zero, but not really an exact maximum temperature?	[ "At Absolute Zero, molecular motion comes to a complete stop. You can't get lower than that. A maximum amount of molecular motion has yet to be established, so no maximum temperature has yet been determined.." ]	[ "We are limited by nature in our precision. Many high-precision measurements are done by using light in some way, which means the precision is limited by the wavelength of the light being used." ]
The business models of open-source software companies	[ "They make money in one of two different ways. 1. Donations - (Firefox). Pretty much your standard charity works. 2. Support Contracts (Red Hat) - Imagine a grocery store who offered you unlimited free food, but if you want any of it cooked, have to hire one of their chefs to cook it for you. You can still eat it r...	[ "I believe the [Stanford University Orbis project](_URL_0_) has a pretty good reputation on this sub. I've seen it alluded to several times without it's accuracy being contested. I would imagine it contains a degree of speculation and estimation but I'm not sure exactly how much." ]
How does gentrification push poor people out of neighborhoods?	[ "Your property rising in value isn't necessarily a good thing. It's good if you own it and want to sell it, sure. But if you want to keep owning it, it means you have to pay more in property taxes every year. If you don't own it, then it's even worse. It means your rent will go up, oftentimes so dramatically that...	[ "It doesn't, the ad was intended to make you associate Colgate with feeling virtuous and then want to buy Colgate the next time you're at the store." ]
What is the earliest example we know of for written music? Do we have any knowledge of what the music of specific ancient cultures would have sounded like?	[ "The oldest written music I know of are hurrian hymns ~~to some godess I can't remember the name of right now~~ Edit: I misremembered, the most complete one is a hymn to the godess Nikkal. They were written down approximately 3400 years ago on clay tablets with cuneiform writing. The tablets were found in Ras Shamr...	[ "To add to this, why was monogamy the norm in pre-Christian Greece and Rome? What were the cultural differences that made monogamy the norm among Roman emperors but not among Asian or Middle Eastern rulers?" ]
Why is communism viewed so negatively by a lot of the World today? How did it disadvantage society?	[ "Because any \"communist\" country always ended up being a brutal dictatorship that killed a lot of people. Not only that, but due to reality, planned market economies are more inefficient than capitalist ones, which leads to shortages. Being unable to provide for basic needs is a huge disadvantage to society." ]	[ "The Armageddon Letters came out a few years ago and seeks to examine this exact same question. The authors try to look at the conflict through the eyes and experiences of JFK, Khrushchev, and - especially - Castro. [Kennedy's PoV](_URL_0_) [Khrushchev's PoV](_URL_1_) [Castro's PoV](_URL_2_)" ]
why can modern wall adapters be plugged in either way?	[ "UL rules are if you can prove neither prong can accidently electrify anything outside the charger you don't need a polarized plug (a plug that fits one way). Generally that would be devices with an entirely plastic case (so a lose wire can't electrify anything) and full isolation between the wall and the power (ba...	[ "Because the original explorers were Western Europeans, and we've just used modified revisions of their maps since everyone has been used to them. Defining North as the \"top\" of anything is a human attribution, and we could easily make the South the \"top\" of the world. [Here](_URL_1_) is a video from the tv sho...
I recently read that left handed people process most information on the right side of their brain while right handed people process most information on the left side. So, which side of the brain processes more information if the person is ambidextrous?	[ "The whole left side / right side of the brain has been debunked. Tests have shown that when doing anything requiring a decent amount of brain power electrical impulses are active throughout the entire brain simultaneously." ]	[ "How loud a noise is in one ear, relative to the other ear, allows the brain to estimate where the source of the sound is coming from. When both sounds in each ear are in sync and being received at the same volume, your brain figures that the source of this noise must be located between your two ears; the middle (o...
How do escalators maintain the same speed regardless of how many people are on them?	[ "Whenever electricity is involved it can't be truly ELI5 but I'll try by skipping over the details. I'm a winder electrician, which means I build motors and motor systems. They are driven by induction motors that always turn at a constant speed linked to the 60Hz frequency of the electric lines. Every time the elec...	[ "Because it is running off a battery. A battery only has a certain amount of charge (current) that it can supply, usually measured in mA-h (milliAmpere-hours). But as it runs out, the voltage that the battery can output (kind of like the \"pressure\" of the electricity) declines, too. That declining voltage means t...
How is stage hypnotism possible when to be hypnotized you have to be completely relaxed which is very difficult to do on stage?	[ "Stage hypnosis is essentially just a performer asking people to do things, and those people willingly going along with it. That's all there is to it. The art is in stage presence and the ability to pick people that will do what you tell them to in front of a crowd. The hypnosis angle is largely just an \"out\", a...	[ "All of the domesticated animals became that way because we selected the most docile specimens of the species and bred them over a number of generations, selecting again the most docile for each new generation. Depending on the lifetime of the particular animal this can take many years. In a tightly controlled expe...
If Pluto hasn't completed an orbital period since it was discovered, how can scientists plot out its orbital path with certainty?	[ "Math. After we were able to accurately monitor and figure out the body's course it was simply (not that simple) math and physics that told us where it would go. (EX: at day 12 month 5 yr 1981 it was here, on day 27 3rd month yr 1984 it was here, insert big math problem, and we now know that on day 1 month 1 yr 198...	[ "A few different ways; - [Lasers](_URL_0_) for really close things like the moon. - [Parallax](_URL_2_) used for nearby planets and stars. - [Standard candles](_URL_1_), the brightness of a specific type of supernova which gives a good range. - [Red Shift](_URL_3_) for things very far away. For more detail on how a...
How do they provide oxygen for the "space people" on the ISS so that they don't need to dock with refilling spacecrafts all the time?	[ "It recycles the air and scrubs the CO2 from it. Also recycles water from waste. It is very efficient." ]	[ "I'm not a biology specialist, but plant leaves are based on the principle of ready gas exchange. O2 and CO2 readily go in and out of the organism. With a vacuum these gases would expand outwards because of the pressure differential. Remember death is a process rather than an event. The gases would start to leave t...
Is there a known/recorded correlation between intelligence and anti-social behaviour?	[ "Actually, there's evidence that having higher intelligence helps prevent antisocial behavior. For example, [Kandel et al. \$1988\$](_URL_1_) found that men who were at a high risk for criminal behavior were less likely to actually commit crimes if they had a high IQ. However, talking about the relationship ...	[ "I would check out It's Okay to Be Smart on youtube. They do a good episode on this (im bad at links)" ]
Why did most plants end up being hermaphrodites while most animals end up with two distinct sexes?	[ "Plants do not have the same kind of opportunity that animals have to find, pursue, and mate with another member of their species, since they are either rooted in one location, or in the case of aquatic plants, just go wherever the water takes them. Plants cannot really compete for mates or evolve into a more sexua...	[ "your question is based on a confusion of scale. life on earth lives within a very sensitive, and relatively narrow temperature range. the most extreme temperatures between night and day or between seasons even is orders of magnitude less than the temperature changes which occur on other planets. in other words, o...
what does a military or terrorist organisation gain by shooting down a civilian plane and then denying it?	[ "Because they didn't intend to shoot down a civilian airliner. They thought they were shooting down a Ukrainian military transport aircraft. No one has anything to gain from shooting down a bunch of civilians. That's why they are attempting to deny it." ]	[ "Data. Pure, gooey, delicious data. Seriously though - the Airlines are collecting data on a massive scale. If they notice an uptick in travel to/from one city they will use that information to update how their resources are distributed." ]
Would it ever be possible to have a low latency data-connection between Earth and Mars?	[ "No, not according to our current knowledge. Communication faster than the speed of light is firmly in the realm of science fiction. Of course, we may be wrong and there may be a way around it, but there's currently no working theory as to what that would entail. So it is useless to speculate about it. So for the f...	[ "Right now it the closest we have gotten is using artificial neural networks. _URL_0_ It isn't quite as complex as mapping all of the synapses in the human brain. Basically we can make a neural network, and by feeding it a set of inputs and the correct output, we can teach it what kind of output we want in the futu...
Do dogs really enjoy being petted? Or are they just letting us because we are their masters?	[ "There is a Nova documentary on dogs (Dogs Decoded: Nova _URL_0_) and how they have evolved along side us and it shows that during petting their Dopamine (I believe this is what is in the doc) rises. So yes they do get pleasure from it. Now I don't know if that's from petting or just interacting with us. I'd have t...	[ "Particle on skin may cause danger, scratching removes particle (hopefully), relief of the damaging particle releases feel good chemicals into blood. At the same time scratching slightly damages skin, skin damage releases feel good chemical into blood to counteract pain. So kind of a mix of both." ]
Have there been periods of greater or lesser volcanic activity on earth, and if so, what causes this variation?	[ "In the past there have been more volcanic activities since the Earth was much hotter after accretion. The whole surface would have been a barely cooled crust covered in volcanic pustules. It was much hotter and we have evidence of it from komatiiates which only form at higher temperatures than we see today (1). ...	[ "I hate doing this in askscience, but just throwing this out there: _URL_0_ We (humans) have been doing terrible and violent things to each other for a very long time. My guess would be that these things are more accessible in terms of a global scale. However, I would also point out that we used to have public exe...
How do companies who operate at a loss like Tesla and Netflix afford to pay their staff?	[ "they raise capital by selling shares of ownership in their company, or by selling bonds in the form of debt. Tesla has gone to the well to get more money several times in the past year or 2. Works fine as long as investors believe theres a path to profitability." ]	[ "check out /r/darknetmarkets if youre surprised people doing illegal shit can still monetize it online. They sell drugs on the internet, and very rarely do people get caught. Shit's cray. and no, in the case of illegal internet sites (clearnet or darknet), the Identity of whoever runs the site is usually unknown. I...
Why do so many prescription meds have a side effect of "suicidal thoughts"?	[ "Pharmaceutical companies are required to report any side effect that occurs in any patient taking the drug during a clinical trial, whether they think that adverse event is related to the drug or not. Some clinical trials can last for a year or more. In addition, many clinical trials are for medications that treat...	[ "There's a very fascinating documentary on this concept of modern-day marketing. The documentary is called \"[Century of the Self](_URL_0_) (it's long, but very good). Essentially, the way companies used to market was by way of practicality. \"Buy this because it has amazing features.\" Now, most everything is mar...
Why is it that one can listen to a song (auditory stimulus) many number of times but a visual stimulus like a photograph or a scene from a film bores us sooner?	[ "You can stare at a photo for as long as you want. Hearing doesn't work the same way. You can't hear a sound for as long as you want, it's much more here and now." ]	[ "Another component worth mentioning is that YouTube clips can 'intelligently buffer', while GIFs lack this functionality. Imagine your friend likes pistachios, but hates opening them. You, in your infinite kindness, start to crack open the shells and placing the open pistachios next to him/her. If your friend were ...
Why do we have electors?	[ "Hi, hopefully someone can drop by to address your specific questions, but fyi there have been several discussions about the electoral college recently; this one is a good starting point * [Question about the electoral college](_URL_0_) featuring /u/uncovered-history" ]	[ "Your employer takes money out of your paycheck throughout the year to pay your local, state, and federal taxes. The amount they take out, however, is just an estimate how much tax you will probably owe at the end of the year. There's no way for the state, local, and federal governments to know what you actually do...
If i drop down a 1 kg rock into the Mariana Trench would it hit the bottom of the Trench? If not, where would it stop falling?	[ "It's more a matter of density, than weight. Water is a curious thing and even at very high pressure it doesn't get significantly condensed. Let's say we take iron for example, in order for it to be suspended in water, the water would have to be 8 times denser than normal. Even to achieve 2 times the normal density...	[ "The biggest and hardest problem is how to take off from Mars again after you land. This is assuming that you've already figured out how to deliver several hundred times as much mass as we've moved to Mars in all exploration so far and keep humans alive in interplanetary space and on the Martian surface for years. ...
How do animators sync video and audio so fluidly?	[ "It's easier than you think, with animation tools, you can play 1/30 a second of sound to know exactly what sound the voice actor is making, and draw based on that. With practice, you can do this very intuitively. Mimicking the words IRL helps with what mouth shapes you need to draw, and with most animation you don...	[ "It takes a great deal of human-hours as well as computer-hours as well as very expensive license fees for the software to make good quality CGI." ]
why U.S. dollar is the main world currency?	[ "There are a few reasons for this. First is the shear size of the US Economy. The US represents 25% of the entire would economy. There is no other country that is even close. The US economy is the size of the 2nd, 3rd, and 4th largest economies put together (China, Japan, and Germany). The other big thing is the ...	[ "This CGP Grey video does a really good job of explaining it all. _URL_3_" ]
During the time of slavery in the United States, why did the slaves opted to flee to the North instead of going more South to Mexico where slavery is already abolished?	[ "Follow up question: Did many slaves actually flee to Mexico? Is there any writings on how they adapted and integrated into the culutre? And furthermore, are there now people living in Mexico who are mixed Mexican and African due to these slaves from the Civil War?" ]	[ "Usually it's the working conditions that people are protesting. Factories in developing countries with little regulation and workers' rights can be downright abysmal to work in. They're not called \"sweatshops\" for nothing. In addition to poor working conditions is also worker safety. A man might lose an arm oper...
How did people get their hands on salt before it was mined?	[ "There is a book on the history of [Salt](_URL_0_). My favorite story is of the Romans showing up in Britain and watching the people there make salt. It was too rainy and cold for evaporation to be efficient, so the Britons would pour saltwater on a fire. The logs would soak it in and the heat would evaporate the ...	[ "Do you have a particular geographical region or time period in mind? You're more likely to get a good answer if you are more specific than \"people in the past\"." ]
Good (US) Civil War overview book recommendations?	[ "Probably the best one-volume general history of the war (and its causes) is James McPherson's [Battle Cry of Freedom](_URL_0_). I'm not sure what you mean by a \"time-line style book,\" though, so this might be an off-base suggestion." ]	[ "It isn't necessarily from the \"people's\" perspective but Desmond Morton's \"A Short History of Canada\" does give light to lesser known bits of Canadian history. _URL_0_ Full disclosure, I had him as a professor in university and grew fond of his work. He was Tommy Douglas' second hand man in the 60s - so he do...
Does adding more heat to a pot of boiling water make it cook things faster?	[ "This is the thing about latent heat. No matter how much heat you give to a pot of water, until all of the water has turned to steam, temperature of that vessel will not cross 100 degrees Celsius (212 F). More heat will boil the water quickly, for the same quantity of water" ]	[ "The atmosphere acts like a blanket. The Sun's radiant heat warms the Earth, and the atmosphere keeps in the heat. When you go up in elevation, it is like the blanket getting much thinner. Getting a wee bit closer to the Sun does not compensate for the thinner blanket." ]
What happens to the body of a deceased person if no friend or family member claims it to bury or cremate it?	[ "The state or city disposes of the body based on whatever their standard process is. Either cremation or basic burial." ]	[ "Most poor people will file what is called a Chapter 7 bankruptcy. First, you list all of the debts you owe and who you owe them to. The fact that you're applying for bankruptcy is published, so any creditors who were unaware can come forward. First, the court stops everyone from being able to sue you or otherwise ...
What do developers at tech companies do all day once their product is successful?	[ "There's plenty of criticism and things that can be fixed with youtube, facebook, and reddit. In order to maintain their position at the top they need to address these issues, otherwise another company that has addressed these issues will come by and start taking market share." ]	[ "A note to commenters: ~~If you're here for an answer, there isn't a sufficiently good one posted yet. The thread is highly upvoted because people are interested in the question, not because there's an answer.~~ If you think you have an answer, that's great! Before you start writing, though, take a spin through [ou...
Why haven't the active ingredients in Medical Marijuana simply been extracted and sold in the form of pills and syrups like most other medicines?	[ "[Pharmaceutical Drugs Based on Cannabis](_URL_0_) > Pharmaceutical drugs have been developed which either contain or have similar chemicals as those found in the marijuana (cannabis) plant. Some researchers have used their understanding of how the brain processes cannabinoids to develop drugs which follow the sam...	[ "The word is that the Denver Colorado dispensary was funded by money received from Mexican drug cartels. The DEA got word through an informant and shut it down. Tldr: local$$= ok Cartel $$= fed jail" ]
The concept of Six Sigma	[ "Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving toward six standard deviations between the mean and the nearest specification limit) in any process – from manufacturing to transactional and from product to service." ]	[ "Soylent Green was a movie about a wondrous food that satisfied all nutritional needs, but had a dark origin. Since then, it has become a generic term for a food so nutritionally complete you don't need to eat anything else. [This](_URL_3_) has been getting a lot of press lately." ]
What caused the switch from doctors doing home visits to the modern doctors office?	[ "If you keep the doctor in one place, he can spend more of his valuable time actually seeing patients rather than driving between potentially distant patient houses. Having patients drive to the doctor means the doctor gets to see more patients. Some countries (like France) still do paid doctor housecalls, but that...	[ "Back then people still needed jobs, now they dont and can practice harder for longer. And science helps by showing then methods on improving motions. You cam find cool videos on youtube" ]
So will the EU Copyright Directive essentially kill most sites like this one?	[ "No, it won’t KILL such sites, because the majority of users are not in an affected. country. However, I’m curious how the people in those countries will be affected." ]	[ "Better the devil you know than the devil you don't. If a new football/soccer league started, first of all, not every team would join it over FIFA. What we'd actually get is competition. Say maybe 30% of teams join the New League (NL) and the rest stick with FIFA. Now both companies are fighting for ratings, fighti...
Do animals other than primates have dominant hands/legs? Is this visible in their life?	[ "I'm not sure about most, but horses have been shown to take longer strides with their right hooves. You can see this in a horse race in which they go counterclockwise." ]	[ "I am going to suggest one component: mechanical advantage. Locomotion with paired, symmetrical appendages has lower energy expenditure and greater advantage compared to overly asymmetrical ones. Think about if one of your legs was twice the size of the other. Your stride would be unbalanced and I would argue that ...
Why don't all cars use retreads?	[ "They don't offer a great ride. The rubber has to be way thicker than the original tire was. With a truck this isn't an issue. You can only use re treads on rear tires so you would never have a nicely matched set. When a retread fails on a trucks trailer there are other tires to help absorb the loss of the one tire...	[ "What you were told was in fact correct. The people speculating here that a wider tire = larger area of tire touching the road are incorrect. See: _URL_1_" ]
why are first names so common, while there is a whole array of last names?	[ "I think you will find there are nearly as many first names as their are last, but some names are more popular. As well you may note that there are some last names that are very similar to each other, maybe off by only a letter (Nelson - Neilson, McDonald - MacDonald, Johnson-Johnston). Parents can pick any first ...	[ "Look at it like a chess board: After 100+ moves, it's hard to set every step back until you're in the start position. It's easier to remove all the pieces from the board and start all over. ^This ^was ^explained ^before" ]
How does a sound waves become more than just a frequency? ie. specific sounds like words or hand claps?	[ "In life, sounds are made up of a number of different waves with different amplitudes and frequencies. If you have a guitar string vibrating, you have the fundamental frequency and harmonics. Then you might have sound from the body vibrating, or from the first string causing the others to vibrate, etc. All this stu...	[ "Imagine you wanted to send a digital file to a friend of yours, but all you have is a telephone and the binary data contents of the file. You tell your friend \"when I say beep you write down 1, when I say boop, you write down 0\", and then you read the contents of the file to him over the phone \"beep beep boop ...
Can every color mixture of Play-Doh always be converted back into any one of its constituent colors through more color mixing?	[ "I think you are asking, more or less, if there are \"anti-colours\" which can cancel the effects of adding one colour to another. For paints/play-doh (im assuming you mix the pay-doh so well it acts like mixing paint) when you mix two colours together you are merely changing the light which is observed/reflected. ...	[ "If the breeds are very different in size a female from a small breed might have trouble delivering puppies sired by a large breed dog. This might cause damage to the female. So she might be 'ruined for life.' This may be the source for the rumor you heard. Crossing a large breed female with a small breed male woul...
If you drink out of a water bottle, cap it, then leave it for days, will germs build and make you sick?	[ "Germs need food, too. If it was pure water, then no, germs wouldn't grow. But if you backwashed then likely there would be some cells, mucous and other goodies from the saliva for them." ]	[ "California has really strict laws. The exact wording is just to comply with a particular labeling law required by the state. And since it makes sense to give the same products to California that you give to the rest of the US, it's common for many products to have the warning printed on the label. Realistically, t...
Does cracking your windows actually help them from being blown out during a hurricane?	[ "Not scientific at all, but somewhat relevant personal experience. I was in a tornado 4 or 5 years ago where water was seeping in sealed emergency exits. I know the pressure is worse in a tornado, but I'm guessing that if you had windows cracked you would have massive amounts of water in your house. Board up your w...	[ "Your whole high school is in the gym for an assembly. The presentation comes to an end and everyone needs to leave all at once. If you never open the doors, people will never leave. If you open one door, how long will it take for everyone to leave? If you open all the doors, how long will it take for everyone t...
What language did Victorian European rulers speak when together?	[ "I'm not sure about which language was used all the time, but since you mentioned George, Wilhelm and Nickolas, I believe this is relevant: Before the outbreak of WWI, Wilhelm of Germany and Nikolas of Russia sent eachother a series of very polite telegrams basically trying to talk eachother out of this whole war b...	[ "EDIT: Removed a large chunk of my answer. Thanks, shlin28, for correcting my knowlege on the status of Roman N. Africa prior to the Muslim expansion. Around 1100, a tribal confederation known as the Bani Hilal- numbering some 200,000 men, women and children in all- moved from the Arabian Peninsula to Egyptian an...
Why is a yawn so much different than just a deep breath?	[ "Am I the only one who yawned when reading this post?" ]	[ "Your brain is getting ready to say the next word by the time the first word is being spoken so it's kinda like they un synced for a second" ]
How Does A Computer Virus Actually Get Onto Your Computer?	[ "You get computer viruses from another infected computer on your network, or by getting tricked into installing it yourself. Viruses are only one part of the malware family, though. There's also trojans, worms, rootkits, spyware, and adware." ]	[ "The same way you can be in the same yard as a bee. You only get stung if you are a threat. Just ask Steve Irwin." ]
Do cats know when they're playing with a toy or do they think they're actually on the hunt and that they're attacking a prey?	[ "They don't know until they are 6 months old but toys are must for brain developing. Cats are just like human babies with toys; they dream and think about that toy, make sounds and examine it. Cats can get bored too and toys are good for working-out. But if you close a cat in a room with lots of toys it might get n...	[ "The photon from the laser pointer will travel infinity until something stop it. But the laser itself contains million of photons, and the further they travel, the further they are away from each other. You can test it yourself by pointing at something and walk closer, the dot become smaller but more clear, walk ba...
Why do antivirus programs identify videogame cracks as dangerous viruses or trojans?	[ "It depends. With some code, especially in some games, it can be misidentified as a virus due to the fact it is similar to a virus' code, marking it as a virus or trojan. On top of this, some malicious uploaders put viruses or trojans into your download, so that, when you run it, it activates the malicious code. Ot...	[ "Kind of like data mining. Some companies will alert you if you buy something off a new website, or if the website is frequented by hackers. Let’s say you buy a bike online for $130. $130 isn’t that much money. However, people usually don’t order bikes off the internet. That’ll raise a red flag. And of course if th...
Why do larger species of fish have darker meat than smaller species of fish?	[ "White meat = fast twitch muscles which are used for short bursts of energy. Dark meat = slow twitch muscles which have myoglobin (that’s why it’s dark) and are used for sustained swimming, long periods of activity. Most small fish only use short bursts of energy, whereas larger fish are swimming for longer periods...	[ "The leading theory is that during the period of cosmic inflation, in which the universe expanded much faster than the speed of light, quantum mechanical fluctuations were collapsed and then magnified as they expanded, which lead to the fluctuations that caused galaxies and the like. Planets and stars have differen...

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