Split (3)

train · 273k rows

title stringlengths 0 299	text list
What makes a good haircut?	[ "Go to a licensed barbershop. Not a salon or discount place. Ask for a gentlemen’s cut. Haircut should run you $30-40.\n\nAsk for a scissor cut. Long on top, taper fade on the sides.\n\nThis is pretty much the traditional ww2 style haircut everyone has. If you want to have a more extreme fade, you can ask them to u...
If someone has a condition which obstructs their airflow/ability to breathe normally, wouldn’t this cause a steady loss of oxygen to the brain and therefore lead to progressive brain damage?	[ "No, because blood flow (and therefore oxygen) isn’t fixed. In case of hypoxia (low oxygen level in the blood) or blood loss, there are some organs who receive more blood while others don’t; the formers are called “noble organs” (I’m Italian, it’s a direct translation, maybe they’re called something else in English...
Speed cameras	[ "I don’t know where you live, but where I live, the most lanes a speed camera will cover, is two (To my knowledge) - On motorways, they have an array of speed cameras; one camera per lane.\n\nAlso, I believe most speed cameras use number plate recognition, to identify which car is the speeding vehicle.\n\nI’m not s...
What is the sensation you get from expecting a certain movement that doesn't come, for example expecting the elevator to stop and feeling like you're accelerating when it continues?	[ "To put it simply: muscle memory and habit.\n\nYou took hundreds if not thousands elevator rides in your life, you know how it goes, even unconsciously your body adapts to it.\nWhen something out of the ordinary breaks the rutine you are used to, that feeling you asked about happens" ]
can women’s periods really sync up with other women? If so, how?	[ "This absolutely happens. I was going on a school led camping trip (I was 14 at the time) with about 10 other girls. We were hiking many miles over 6 days and would not have a chance at any point to pass a store. It was the type of backpacking trip where they dropped us off in one location land picked us up in ano...
How do the grooves in records actually make sound?	[ "When they're recorded, a needle cuts into the wax at various depths based on the amount of vibration caused by the original sound.\n\nThen when they're played back, it works in reverse: as the needle passes through the grooves and moves up and down over the contours of the vinyl (which match the contours made by t...
How does one word end up meaning several, completely different things?	[ "The borrowing of a related word from another language which becomes the original word's main meaning. A good example is the English word \"magazine\", originally a French word meaning something like \"warehouse\" or \"storehouse\" and retaining that meaning when talking about a ship's powder magazine. Then in the ...
Why does our skin prickle when we start to sweat?	[ "Judging from the other comments, this must be far from a universal thing, but I know what you're talking about, OP. I have psoriasis, and I frequently get a terrible feeling of itchiness when I am in humid conditions and sweaty. I also get it after taking a shower. Why? No idea. My cause may be different from...
Keynes-ian economics	[ "Well, Keynes' was a very prolific economist and wrote about a lot of stuff that could be considered to be part of \"Keynesian Economics.\"\n\nThe thing most people tend to think about though was turning mainstream economic though away from ideas about a minimalist state with no role to play in economic crises to t...
what is the main differences between air-to-air and air-to-surface missiles?	[ "There are a lot of differences, and a lot of similarities based on the missiles in question. The one largely Universal difference is in Explosive Yield. \n\nAir to air missiles tend to pack less explosives, because aircraft take less force to destroy than a reinforced bunker, and the missile may have to pull hard ...
- What does Mastering and Mixing audio actually doing?	[ "This has been asked many, many times before. I answered one just few weeks ago.. so to get more comprehensive answer, use search (google search is better than reddit search..).\n\nMixing is merging multiple channels of audio to few. A regular rocktrio has around 8 channels of drums, 2-4 of guitars, 1 bass, one mai...
Why do some song birds appear to intentionally dive or swoop in front of moving vehicles?	[ "Maybe they get some kind of speed boost from the air moving past?" ]
What exactly is the Hatch Act?	[ "The Hatch Act prohibits most executive branch employees from engaging in partisan political activity as part of their official duties. Spending money on a political campaign is something totally different and I'm not sure why you think they're related." ]
why dont factories have green houses to suck up their co2 emissions and create oxygen?	[ "Way to much CO2 to be absorbed by a simple little green house. If you ever worked in a factory and saw how much waste they produce and scale it for CO2 emissions you get a feel for how much they blow out there. Also most emissions are really contaminated with not juat co2, which would kill off the plants", "Tech...
If fluorine is such a dangerous substance, why is fluoride, a derivative, not similarly dangerous? How do you safely add fluoride to water, and why is it beneficial for teeth?	[ "Because compounds and their constituent elements are different.\n\nHydrogen and Oxygen will, separately, readily combust in a fiery explosion. However, that explosion happens simply because water is way more stable than Hydrogen and Oxygen separately. Once they're bound up in water, they can no longer make that tr...
The Greek naming dispute with the, now, Republic of North Macedonia	[ "The problem is that the term \"Macedonian\" has some baggage beyond just the region. Makedon was a hellenic kingdom that Alexander the Great hailed from. Makedon was Greek speaking and Greek in culture. Their capital was Pella, which today is situated near Thessaloniki in Greece. North Macedonians are actually fro...
How does soap work? Does it kill the bacteria present on our skin?	[ "Soap is an emulsifier, which allows oil and water to mix. The bacteria on your hands are clinging to/living in the natural oils on your hands, and the soap allows the water to mix with the oils and wash the bacteria away.", "As /u/HCRoyall noted, soap makes oil and water mix.\n\nTo elaborate on this further...\n...
Why isn't there more text message spam?	[ "Because an email costs some indescribably small amount of money in electricity and internet connection to send (or, potentially, in access to a botnet), but an SMS has a standard fixed cost. You can't just make random people who you're spamming pay for the message you just gave them, so you'd be forced to pay for ...
how can China grant insane subsidies to factories and businesses that allow selling and shipping goods across the world for little to almost nothing and still make massive profits?	[ "There's a few reasons:\n\nCapitalism: China isn't it. The government is in control and can do whatever it wants to any company it wants, and it does. \"massive profits\" is a confusing idea in China. It's not wrong, but its definitely not right either.\n\nCurrency and costs: China uses some methods to artificially...
Why does starting or cancelling a print job seem to take so long?	[ "Printers are truly awful, and mainly because they are different from other pieces of tech in that they cannot be fully virtual. Transistors can flick on and off incredibly quickly, so sending information across the world digitally is very efficient. \nBut a printer is basically a mechanical pen that has a small co...
Why are we feeling tingles when we know that a bug is nearby?	[ "Anticipation. You anticipate, expect them to land on you so your touch sensation is primed to find exactly that kind of feeling. Which in turn makes us hypersensitive towards light touch and you even get phantom sensations. You are primed to sense the tiniest winger thing landing on you and you are making lot of f...
How does software control hardware?	[ "The pin is wired to a driver transistor inside the chip. That transistor is like a switch, it connects the \"power\" pin to the \"output\" pin when the gate voltage is high. The transistor's gate is connected to one output bit of an output latch that's addressable in the computer's memory or I/O address space. ...
how did Einstein realize that light will bend near heavy objects?	[ "Edit -- I'm leaving my original answer below but user @missle636 points out that this was not his original thought experiment. [_URL_0_](_URL_1_)\n\n\\----\n\nYou don’t need math to understand this. Here was Einstein's thought experiment.\n\nStart with the Equivalence Principle (EP), which (essentially) states t...
What's a shell, subshell, an orbital in an atom? What's the difference between them and an orbit?	[ "A shell is the area around an atoms nucleus where electrons spend most of their time. Shell and orbit are the same thing. \n\nThere are 4 'sub-shells' that can make up a 'full shell' : s, p, d and f. Not all are used though, so the first 'main' shell is just an s 'sub shell' and the second 'main' shell is an s and...
Why does Humidity make the temperature feel 20 Degrees hotter?	[ "High humidity means that sweating is less efficient. That makes it a lot harder for your body to cool itself down.", "When you sweat moisture gathers on your skin. For the moisture to evaporate it needs first and foremost two things.\n\n1. Enough energy to do so. This energy comes from the moisture's environment...
How is Cooking Oil Made?	[ "Take seed or fruit. Grind it. Collect oil. Vegetable oil\n\n\nCooking oil is made from corn, sunflower, peanut, rapeseed (canola)\n\nOr alternatively rendered animal fat. Beef fat makes tallow, pig fat makes lard." ]
Why do inflatable balls lose air over time?	[ "They tend to be inflated to a pressure higher than the normal air outside the ball. So there is always air trying to escape. It will find a way especially if the air temperature cools down, with less pressure, holes that might have been smushed shut might relax and open. It can also happen if the temperature incre...
Why does the East coast of Canada get so much colder and get so much more snow than Southern/Central Europe that it lines up with on a map?	[ "[The Gulf Stream](_URL_0_)\n\n > The Gulf Stream influences the climate of the east coast of North America from Florida to Newfoundland, and the west coast of Europe. Although there has been recent debate, there is consensus that the climate of Western Europe and Northern Europe is warmer than it would otherwise b...
Why does CGI in recent movies not seem as realistic/detailed as Avatar (2009) with recent developments in filmmaking and computer animation?	[ "I think part of it was that almost every bit of every scene in Avatar was CG, so there wasn't as much of a chance for anything to be obviously out of place. When there's just one CG element in the scene, it can be really obvious and look really fake.", "It all boils down to how much they are willing to spend on ...
why does stretching feel so good when you’re tired?	[ "Sometimes it s just stress making muscles tense or rigid on a certain position . When you stretch, you change that position, relaxing the muscles a bit.\n\nBeing good/better physically usually translates into a \"feeling good\" in your mind, if that's what you mean." ]
why dont acids and bases melt through the containers they are kept in? is there an acid/base that could potentially be so strong it melts through everything and just finds its way to the center of the earth?	[ "For the container, they are kept in nonreactive things, like glass. As far as the strength to melt to the center of the earth, in theory yes. You would just need lots of it no matter how strong it is. It also may need some help getting through water tables.\n\nIf you mix 14 and 0 yes it becomes 7. But that doesn’t...
Why exactly does inflation happen?	[ "Can you be more specific? What type of inflation are you talking about?" ]
how do media agencies quickly find video clips in all of the media that’s been recorded over the last few decades?	[ "They have metadata for all the clips in their libraries. They search the metadata and then look at the matching clips. So, they're not searching \"all the video clips\" but rather \"all the clips they have\".\n\nAfter that, it's all Google/YouTube." ]
The standard model	[ "There is probably not a ready ELI5 answer to that question, but the short answer is that it's the general schematic for particle physics, via its explanations of three fundamental forces and the subatomic particles which make up the universe and interact via those three forces.\n\nIt is incomplete; there is no Sta...
why is it better to be relaxed than tense if falling from heights?	[ "It's like the same thing as you can break spogotter but then u be cooking teh spogotter and then u cannot break it anymoar", "When you tense, you are making it harder for your muscles to absorb energy.\n\nSo when you fall, the energy is typically put on your bones" ]
The difference in the sun's effects on Jupiter vs Earth. 4x distant, 318x massive. How does the sun keep both planets in orbit without that same gravity pulling the closer, smaller, less massive Earth to its doom? My brain says the speed of orbit helps, but HOW?	[ "You first need to understand what an orbit really is. Imagine you are firing a canon. The ball will go to a certain speed and gravity will slowly attract it to the ground. The acceleration of gravity is always the same so if it take 2 seconds for the ball to drop to the ground, it will always be 2 seconds. If your...
Why haven't we been back to the moon in almost 50 years?	[ "Why would we?\n\nThat's the multi-million dollar question right there. \n\nThere is no scientific, economic, or political reason to send a manned mission[s] to the moon. Pretty much anything we could ever need done could be done with automated robots more easily anyways.", "I attended a talk by astronaut Chr...
Why is it so hard for juries to convict a police officer when they shoot an unarmed civilian and there is clear evidence of excessive force?	[ "Self-defense laws are often intentionally worded to allow for some error in judgement, and specifically create the standard that \"feared for your life\" is a good enough reason to use deadly force, even if you were wrong. \n\nThis is setup is honestly for a good reason. Lets say I break into your house in the mi...
How come sometimes your teeth hurt right away after eating something super sweet?	[ "A cavity, enamel loss, damage to teeth which leads to microscopically exposed nerves etc.\n\n\n\nYour teeth should not hurt when you are eating sweets. Ask a dentist. Like, quickly." ]
How does clicking a box actually confirm that you're not a robot?	[ "It looks at how you click it. If you instantly move the mouse to the location and click it then it can be suspicious of it being a program instead of a user with a mouse. If the movements are suspicious then it makes you go through a special type of captcha, an identification captcha (like where it has a picture o...
What is an API?	[ "It probably seems like they're talking about a different thing because an API is just a broad concept and the specifics of what form it takes can vary significantly.\n\nAn API is whatever method a programmer uses to interact with something. That something could be some other software, it could be a web service, it...
Why do some plants have sweet fruits which makes you want to eat it, but at the same time thorns that stops you from eating it?	[ "The thorns make it harder to eat the plant especially for large animals. At the same time small animals like birds that can fly far can eat them without any problem. The design of plant is a compromise between spreading seeds and not getting eaten. For extreme plant like cactus there is some animal that can eat t...
Why do tires need to be hollow and filled with air? Why can't they just be filled in with rubber?	[ "Air weighs less than rubber. Rubber costs more than empty space. The ride quality would be worse. But there are some interesting designs for airless tires that may revolutionize how we design tires.", "Solid tires exist for some applications like military vehicles which you dont want to pop when they are shot. B...
We often see animals "adopting" and feeding babies from other species. How come the babies don't die from "malnutrition"? Is the milk of any mammal suitable for any other mammal?	[ "Technically milk from any mammal is not the same for any mammal, as cow and goat milk is not enough to sustain a newborn baby. I believe it varies between humans and animals. Human breastmilk is designed for humans and humans alone. Maybe animal milk is more universal and made up of the same basic proteins so that...
What’s the difference between a municipal area and a metropolitan area?	[ "A municipal area is defined by law with strict boundaries. Basically if any city has certain ordinances or taxes then that applies to those lviing in the municipal area.\n\nMetropolitan area is kinda more fuzzy as it looks on how people interact in a region. for example where they live and where they work, or shop...
Why do people vomit due to radiation?	[ "Vomiting and diarrhoea are the body's reaction to poisoning, to void any toxin remaining in the digestive system before it is absorbed. Evolution has never been in a position to develop a specific mechanism to cope with radiation and the damage it does is interpreted as poisoning, hence that response.", "So radi...
How does credit card fraud work exactly?	[ "I don’t know how it works where you live, but here in Brazil there are people that install a device at ATM machines at places with few people around and that device copy all data.... after they use it into a “clean” card. It’s a pro job, i think. Here we use chip and password and even though they can clone it! �...
Why is it that when you put your ear up to a seashell/plumbing pipe/anything circular, you can "hear the ocean"?	[ "It mostly is not the sound of blood flow in your ears. It is ambient sound bouncing around inside the cavity before reaching your ear.\n\nBut don't just take my word for it, go get a cup right now and listen into it from an inch or so away. Hear that rushing sound? Now press the cup to the side of your head ar...
Are there any elements besides Uranium and Plutonium capable of creating a thermonuclear explosion?	[ "Uranium and plutonium are not able to create thermonuclear explosion, they are only able to create nuclear explosion. Nuclear explosion mean fission energy, while thermonuclear mean fusion energy. Uranium and plutonium are used as a source of fission energy to force the fusion of hydrogen and that's this fusion of...
what is happening when the computer loading bar takes way longer to complete the final 1% during the installation process.	[ "Generally, a progress bar doesn't work how you think it does (and each different bar may be measuring different things).\n\n & #x200B;\n\nGenerally the ones that stick at the last 1% are cleaning up whatever was downloaded. When you are downloading something to C:\\\\ it's probably downloading to a temporary dir...
how can documentaries show illegal activity without any repercussions?	[ "Half of it is probably staged. Most people have no idea how such things truly work and will accept any story that sounds reasonable enough to them. Hell, there's countless series out there that are entirely and obviously staged and people still watch it.\n\nIf it is genuine there's the freedom of press. Journalist...
How does long exposure to the sun cause our skin to burn and/or tan?	[ "The sun's Ultraviolet radiation (which we can't see) damages our skin. If you are exposed to too much of it, you get a sun burn, which is not a burn in the \"I touched something hot\" sense, but as in a radiation burn. \n\n & #x200B;\n\nOur skin will try to protect itself by creating melanin (which is dark in co...
Why does in general foods taste better warm and drinks taste better cold?	[ "I would contest this. So, actually, things don’t taste better or worse hot or cold, they in fact taste LESS. Human tongues aren’t as capable of tasting at temperatures to far below or above room temp. That’s why wine snobs say wine should be room temp (actually cellar temperature which is just below room temp, but...
How the names of countries are translated to other languages. How is their pronounciation determined, why are they often completely unrelated to the native name? Example - Deutschland is Germany in english.	[ "Names for countries are not always directly translated from other languages. \n\nPeople from other parts of Europe knew about the people inhabiting the area, that would one day become Germany, long before anyone was making any concerted effort to translate the German language in order to know what they called them...
Why are Andromeda and milkyway colliding? How common is it for galaxies to collide and what are implications of the collision? Lastly, since our universe is ever expanding isn't it the case for galaxies to move away from each other rather than colliding?	[ "> Why\n\nBecause they are very close to each other, and are attracted by the gravity of the other.\n\n > How common are they \n\nVery. Most galaxies are in groups and clusters. Galaxies thus tend to have a lot of neighbors in close proximity, which increases the collision rate. \n\n > What are the implications\n...
What are the applications of studying the fourth dimension?	[ "Mathematicians don't study real world in any capacity really.\n\nMath is about studying ideas and how they connect to each other. Ideas can be about anything. If you apply ideas to real world, you then get applied mathematics or other fields of science like physics. It's a bit hard to tell what field you're studyi...
If I suspend a weight in the center of a lateral string and the string is anchored on both sides to a solid structure. Is the total weight felt in full on either side or is the weight distribution halved for each side?	[ "Neither. Each string will have a greater force as a function of the string angle from horizontal. Perfectly horizontal strings would have theoretically infinite force, while a string hanging straight down with the weight at the bottom would have the force of the weight of the object.\n\nThis is why when you wrap o...
What makes us feel full? Is it the caloric value of the food? Or the amount of fat? Or the overall volume? Or a combination of things?	[ "It's certainly a combination of things, but scientist aren't exactly sure what the mix of things is.\n\nWe know for a fact that foods with high quantities of certain components, such as protein, fiber and water tend to keep us fuller for longer then those with only fat, which does a very poor job of making us feel...
Why are animals that are much stronger, faster and can easily kill us afraid of us?	[ "Two reasons.\n\nFirst reason is that animals will tend to avoid conflict at all cost. Attacking anything carries a certain level of risk, and that risk can end up killing the animal. Breaking a bone for example, is pretty much a death sentence. Especially if you are a predator and require a significant caloric int...
If you're short-sighted when you're young but gradually become long-sighted when you age, is there actually a point where you have perfect vision?	[ "Are you talking about how old people need reading glasses?\n\nThat’s not because you’ve become far-sighted. It’s because the muscle that control the lens in your eyes weaken, and it happens to pretty much everyone.\n\nIf that’s what you’re talking about, the answer is no. They just get bad at both near and far sig...
How do these "illegal, offshore holding accounts" work and why are they beneficial to the super-rich?	[ "The biggest benefit is the Us government doesn’t have access to many, so they don’t know how much is held there and is unable to tax the money. So the rich can save money on taxes. \n\nAlso this money can be legally had or ill-gotten. The banks don’t really care. They make money on the money they are holding, so t...
How did we go from lifeless atoms to animate singe cell “life”	[ "Calls for speculation, try r/askscience for the latest theories" ]
how do we know the structures of molecules and how is it figured out?	[ "It depends on what type of structures you mean. If you care about the energy structure, it can be calculated from first principles (you use the Schrodinger equation and a lot of math). If it's a simple molecule this can also give you the physical locations of the electron orbitals and the physical layout of the mo...
How do fat burner pills work?	[ "That question is impossible to answer because there is no standing \"fat burner pill.\" Anyone can call whatever they want that. And they don't have to prove that any of them work. \n\n\nSo in summary, there is no way to know what they contain (and like all supplement aren't regulated and may not contain what t...
How do chess sites detect cheating?	[ "_URL_0_ has some sort of \"advanced algorithm\" that they refuse to release. To me, this proves that the decision is highly subjective.\n\nThat said...Basically the moves of a player are run against an engine and if they match too closely for too long a period of time, it becomes progressively more likely that the...
How does the https transfer the key to decrypt the data without compromising the contents of said data?	[ "If data could be encrypted with a paint colour, then...\n\nIf I wanted to send you encrypted data, first I would send you some random colour paint.\n\nNext, you and I would independently choose a second secret random colour paint (both different) and mix it with the first colour I just sent you. We would come up w...
how do climbing vines find structures or trees to climb up?	[ "Wisteria grow towards dark, so they'll grow from sunny to the shade provided by a tree. When they touch climbable surfaces they climb them. (Before we trained it properly, our wisteria would grow down our entryway and climb our front door.) English ivy just grows; it's happy spreading all over the ground. It only ...
What are the advantages (and disadvantages) of animals having larger males vs larger females?	[ "It varies from species to species really. With lions, a single male keeps a pride of females and he is the only one to mate with them. Male lions grow very big because they are essentially brawlers. When a male lion wants to mate, he'll have to fight and beat a pride leader to take over his pride. If a male lion h...
Why does the urge to pee become stronger in front of a toilet?	[ "A condition known as [Latchkey Incontinence. ](_URL_0_) \n\n > Two words: “Latchkey incontinence.” No joke, it was the actual terminology used in an actual study of patients with overactive bladders. The study’s researchers defined it as “a loss of urine that occurs when one arrives home and puts the key in the l...
How antennas receive signals	[ "The metal car does also \"receive\" the signal, and you could in theory detect the signal on it, but because its geometry and electromagnetic properties aren't tuned to the types of electromagnetic radiation that makes up the signal, it will be very difficult to get the useful information from the received signal ...
Why does our body cringe when we remember something embarrassing?	[ "So, here's what's fun. Whenever we experience something emotionally significant, it gets \"bathed\" in hormones that strengthen our memory of that event. \n\nThis is fantastic for fun memories of playing in the mud, baking cookies with Grandma, first kisses, weddings, babies. etc. But our brains don't differentiat...
Why does it hurt/sting when you are holding something cold for too long?	[ "Frost bite. \nHolding onto a cold object for that long is often roughly as damaging as holding onto a hot one. \nThe tiny blood vessels contract to keep heat in, so some cells get starved of oxygen and die. \nAs temperatures keep dropping, ice crystals could form inside cells, causing them to burst. \nIt might...
What causes damaged Lithium ion batteries to often swell up?	[ "Generally, swelling occurs from one of two things: extreme temperatures or being in a discharged state for an extended period of time.\n\nThe extreme temperatures cause swelling due to gasses being released on the inside of the battery cells due to an “over-excited” environment.\n\nThe other cause has to do with t...
Why do hunters bother wearing any kind of camo when they have orange vests on?	[ "The bright orange isn't noticeable to the animals they are hunting. What is noticeable is a particularly human-shaped outline, and the camoflauge helps break up that distinctive shape.", "The deer don't see in color, but they are smart enough that a big area of all one color with defined edges and boundaries, ...
why do lamps take two clicks to turn on and off?	[ "Most likely you are dealing with a 3 way lamp switch. Off-low-high-off\n\nI haven't seen one in a long time, but there used to be light bulbs with 2 filaments in them, and the switch would light one for low, then both for high. If there is just a regular one filament bulb in it, you still have to click through bot...
What's the difference between mechanised, motorised and computerised?	[ "If something is \"mechanized\" it utilizes a mechanical advantage. Things like levers, gears, screws, etc. \n \nMotorized means that it incorporates some sort of motor...electric, internal combustion, whatever. Typically means that it is also mechanized. \n \nComputerized things include an electronic com...
When you are having joint pain and you spray pain relief on it, what actually happens?	[ "Generally, it's a topical anesthetic, like menthol. All it does is penetrate the skin to the nerves and deaden the nerve's pain signals for a small amount of time." ]
Why does drinking chilled water help you breathe freely after extreme cardio?	[ "Well, let’s establish a couple things off the bat. Cold water does not hydrate you more than other water and does not directly change your overall body temperature.\n\nNow, here’s the weird bit. The refreshing feeling you get from drinking cold water actually has nothing to do with your body “liking it more.” ...
Since CO2 is basically food for trees, won't extra CO2 make trees grow faster and bigger so earth will self-adjust the level like other cycles in nature?	[ "Well, CO2 isn't really like food for trees, but that's not the point. Trees (all photosynthetic organisms really) can only consume and utilize a certain amount of CO2, sort of like how once you eat to the point of being full, you can't eat any more no matter how much food is on the table (not to reinforce the idea...
Does the location of where I plant trees matter?	[ "It does matter. Different types of trees have different sun vs shade requirements as well as how much space they need to properly grow. That being said, trees can withstand a lot. Look at your typical forest- the trees are densely populated and yet manage to survive. The ones that don’t just become fertilizer for ...
How did the KGB work?	[ "The KGB was a network of informants. They had their ears everywhere.\n\n & #x200B;\n\nThis presented the problem. If you said something that someone thought might get them favor, they passed it on. Eventually, it would reach the ears of an actual KGB agent, who were allowed to do whatever they saw fit to eliminate...
How the human body can lose tolerance to alcohol if it has not been exposed to alcohol over a long period of time.	[ "Various other parts of the body notwithstanding, tolerance to the intoxication that stems from drinking is a very brain-heavy process. Ethanol - the \"drinkable\" alcohol found in booze - binds mainly to receptors for GABA, a chemical your brain naturally produces in balance with another chemical called glutamate,...
Why does a water stream break up into droplets after falling from some height?	[ "Air resistance. Y’know when you swing your arm through the air or jump on a trampoline and it feels like wind, even if it’s not windy? Water can’t hold itself together after a certain amount of force is applied to it, so it breaks up after gaining enough speed." ]
How do Electrodes Detect Voltage Changes in ECGs	[ "The simplest way to describe this is that an electric charge causes a magnetic field to form and change when the charge moves. This magnetic field can be detected by the electrode by the \"reverse\" process - called magnetic induction. A moving/changing magnetic field induces charge particles to move and in this c...
Why are our bodies so sensitive to even small temperature changes?	[ "Well outside temperature and inside temperature are very different. Your body works extremely hard to maintain your internal temperature and so when that goes off its VERY noticeable. Effectively all of the chemical processes that happen in your body are optimized for your normal body temperature and when you he...
what’s the worst that FaceApp can do now that they “own rights” to so many faces?	[ "First, they down own your face. Just the images you create with their app. But they own them good. Appleinsider has done a breakdown of their privacy policy. \n\n\"Essentially, if you make something in FaceApp, FaceApp can do whatever it wants with what you've made. Not only can it repost your images without your ...
Why do you die almost instantly when the level of CO2 in the air is above 10%?	[ "The red blood cells serve the purpose of transporting O2 from the lungs to where it's needed, and transporting waste CO2 from where it's produced to the lungs. The mechanism is simple: It'll grab hold of dissolved oxygen or CO2 if there is much of it, and release it when there's little. Since there's a lot of oxyg...
How are massive, multi billion payments made between states?	[ "close enough. no \"physical\" money are being moved. Only \"virtual numbers\" on PC's, databases etc. There is no hard money behind that transfers." ]
how do lizards regrow limbs and why can’t I	[ "There is a trade-off between expending resources to regrow the lost body part (which takes a lot of time and energy) and patching the wound up as quickly as possible to prevent infection and damage to the rest of the body. Whether an animal can regrow a given body part depends on whether it's useful for survival -...
How do non-stick frying pans work at a molecular level?	[ "Polytetrafluoroethylene, PTFE, aka Teflon is a fluorocarbon molecule. Made from carbon atoms and fluoride atoms. It doesn't like to stick to anything, forms no atomic bonds with other atoms, because it's stable as it is, carbon-fluor bonds take a lot of energy to break, so it likes to stay that way.\n\nThen how do...
How can women get infections when they sit on a public toilet seat?	[ "Short answer: They don't. People cover the toilet seat because the idea of sharing a toilet with a stranger is disgusting to them, so they cover it as a placebo to \"block\" that person's bacteria. It's also an assumption that the toilet they're using is dirty.\nInfections from a toilet seat can really only happen...
Do small bugs (flies, ants and so on) don't realize the danger they're in when there's a human around, or do they simply just don't care?	[ "Humans are hardly the most proficient animal when it comes to hunting bugs. They're in danger from all manner of animals wanting to eat them. \n\nThese insects are not devoting brainpower to contemplating why they're on the bottom of the food chain. They simply react to threats as they occur instead of trying to p...
How does Netflix stay in business?	[ "It’s costs a lot of money to make a movie or television series. So they borrow money to make the movies and tv shows. Once the shows air and they make money, they pay back the people they borrowed money from. And since Netflix makes a lot of tv shows they have to borrow a lot of money. But since so many people wat...
What is neuromorphic engineering?	[ "Attempts to use electronics, chemistry, software etc. to simulate the works of biological neural systems. Initially analog electronics was used.\n\nThe science consists of two parts: understanding how these systems actually work in bological organisms, and replicating the effects technologically." ]
how do people actually make different shapes with fireworks such as faces ladders flags etc.	[ "It has to do with what configuration the pellets are in when the firework is constructed. If you force the combustibles into a certain shape, when it explodes it has no choice but to go in a specific direction. Often the pellets will be glued onto a piece of cardboard inside the firework." ]
Why are there so few recumbent motorcycles?	[ "While recumbent bikes can be more aerodynamic, the main reason people use them is that they are more comfortable. Instead of having all your weight supported by a tiny seat and your butt, your butt and back take on the weight. Motorcycles are already much more comfortable than bicycles.\n\nAlso motorcycles are tho...
how is it that when you are packing dirt or other material for earthworks construction, when you apply vibrations the water comes to the surface?	[ "When you just pour any kind of loos materials (like dirt and sand and such) the individual grains don’t stack up in the most efficient way. Friction prevents that. In between the grains there are little cavities filled with whatever is around. Usually air or water like in your case. \nDirt and sand grains are d...
Why do young people nowadays look more their age, than young people 40-50 years ago?	[ "Age perception changes as you get older. Ever walked into your favourite bar and thought to yourself that everyone looks really young compared to how you remember? Even though they're probably the same age as you were when you started going there? It's because you've gotten older yourself.", "That's just selec...
Why do our hands get wrinkly when in the water a long time?	[ "Because your body is recognizing you’re in water or in wet situations, the reason for the wrinkling is for added grip incase you need to grab something or hold onto something" ]
Why is it that whenever I have a stuffy nose, blowing it only seems to clear it for about a half of a second before the snot regenerates?	[ "The cause of your stuffy nose is inflammation in your sinuses which produce excess secretions/mucus. Blowing your nose is temporarily relief of the symptom, but as long as you're still inflamed, it just resupplies itself because that's the function of your immune system.", "Because a stuffy nose has little, if a...

Subsets and Splits

No community queries yet

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