Split (3)

train · 273k rows

title stringlengths 0 299	text list
why are wind turbines giant 3-wing fans as opposed to other designs such as a rolling cylinder or even multiple smaller fans/cylinders?	[ "Bigger systems take more material, and have more weight requiring stronger supports which increase cost.\n\nThat, and you waste energy spinning up a heavy turbine, so the three turbine design minimizes those concerns while trying not to sacrifice the ability to harness the wind.\n\nBut those other designs do exist...
How did UDT navigate dark waters when visibility is nothing?	[ "Most of the time they did dead reckoning. That is to say that they went in a straight line until they either hit something or until they figure they have gone far enough. This did actually work sometimes but at least it brought you closer to your target. They would also pop their heads/periscope above the water fo...
Why do generators and electricity in general make a buzzing sound?	[ "Alternating current is used for most electrical transmission, and it's also in the walls in your house. The North American standard is 60 Hz, which means that the current alternates 60 times per second. When you hear a hum - the mains hum - it's either caused by magnetic fields from the wires causing the metal of ...
Is urine beneficial or aggravating to jelly stings?	[ "this is one of those cases where someone heard a fun factoid, and spreads it round without context and it now becomes a widely recognized \"myth\". There is a specific composition of urine that would work for specific types of stings but the chances that your/someone elses pee on the jellyfish that stung you would...
Why is seawater green in some places, and clear/blue in other places? And why dont these colors mix?	[ "Green sea water is usually the presence of floating algae, diatoms and other plankton that feed on the nutrients in the water. Green water has more stuff alive in it, usually colder water. Colder water can hold more dissolved oxygen in it. Often colder because of upwelling of deeper nutrient rich water that's bein...
How can earthquakes be "predicted"?	[ "Short answer: They can't be predicted, only detected. \n\nMedium Answer: You can sort of predict them on geological time scales (i.e. hundreds, thousands or millions of years) based on past patterns of earthquakes, but it makes predicting the weather next year look simple and reliable.\n\nLong Answer: Monitoring s...
Why don’t our ring fingers have the same mobility as our other fingers?	[ "[_URL_0_](_URL_0_) \nHere's how the muscles connect to our fingers, I'll refer to that in the explanation here.\n\n & #x200B;\n\nIf you look at the index, pinky, and thumb, you'll see that they have unique muscles attached to them that allow them to behave somewhat independently of the others. The ring finger doe...
Why would a senator vote against the permanent funding for 9/11 first responders?	[ "The bill was voted and passed 97-2. \n\nThe two senators who did not vote yes on the bill (Rand Paul and Mike Lee) both proposed amendments to the bill which were shot down quickly and the bill passed.\n\nRand Paul was doing obvious grandstanding quite a bit saying the bill is fake furor over a problem that has al...
Body fat?! How does it dictate its destination??	[ "Fats you ingest are broken down in your body into glycerol and fatty acids using secretions from your fall bladder and pancreas before it is absorbed through the intestinal lining into the lymphatic system. The lymph system delivers the reassembled fat packages to veins near the fats destination. The fat packages ...
Is it possible that dinosaurs could exist on another planet like Earth	[ "Technically possible but extremely unlikely that another planet would have nearly the same conditions and evolutionary path that would lead to dinosaurs existing. Actually, it's so unlikely that it is almost impossible." ]
What is that feeling called "when a vehicle beside you is moving, but you’re stationary, however for a brief second it feels like you’re moving if you look at the other vehicle and why does it happen?	[ "A lot of the data your brain uses to control balance is visual. Try walking a balance beam with your eyes closed. \n\nThis phenomenon happens sometimes because your brain doesn't realize that the object it is using as a stationary frame of reference for your movement, is itself moving. Your brain really thinks you...
- Why is some lightning not accompanied by thunder?	[ "It is just lightning that is too far away for you to hear the thunder. It takes the right atmospheric conditions for you to see it. It is often called \"heat lightning\" but there is nothing different about it.", "I’m having the exact same thing in the southeast. I get flashes of lighting then either a really sm...
zoning out on drives	[ "I will defer to a [previous answer](_URL_2_) to this question, courtesy of u/coriolinus.\n\n > Driving is not an intense task. Once you're used to it, it is almost as simple as walking; you simply do not need to actually think about most of what's going on. \n\n > Memory is triggered by novelty. If you see somethi...
what does it mean by space is a vacuum	[ "It means that a typical cubic meter of space has about 1 atom in it. The rest of it is emptiness.", "A vacuum is an empty area. Usually physical scientists use it to refer to an area without any gas in it. Space has almost zero gas in it (not quite, but close enough as to effectively be the same most of the tim...
How does cardio decrease ones heart rate?	[ "With extensive training, your heart will eventually get stronger and become more efficient at transporting oxygen to the rest of your body, meaning it'll require less pumps and lower one's heart rate.\n\nI dunno about the second question, though.", "When the heart gets in better 'shape' the left side beat (the o...
If falling asleep at the wheel is such a big problem, why don’t people just pull over to the side of the road and sleep in their car?	[ "Because the road isn't necessarily a good place to nap. To start with, the shoulder of most roads isn't terribly large. Even on a major interstate highway you've got basically just enough room to fit your car. Sleeping that close to other drivers barreling past you at high speeds, is not a safe decision. \n\nUp...
How do our bodies decide where to burn fat from after exercise?	[ "They don't really decide. The fat on the surface of each deposit is metabolized with fairly equal preference. This means that deposits with a higher amount of surface area will lose the most mass.\n\nEdit - In other words, it comes off in layers like peeling an onion. The top layer is burned wherever it is lo...
Why do scientists assume water is necessary for all life on other planets? Is it silly to assume there might be other organisms that don’t need it to survive?	[ "It's possible... Someone with more expertise can correct me on this, but water is just really useful, and is also a good marker of temperature. For one thing, it can dissolve all sorts of things. Like... especially with a little bit of the right additives it can dissolve darn near anything. Ex: Water with hydrogen...
What actually happens when water “goes down the wrong pipe?”	[ "It enters your windpipe, which leads to your lungs, instead of your esophagus, which leads to your stomach. There is a small flap/valve that decides which pipe things go down, and sometimes you don't move it fast enough, our you for some reason try to breathe while drinking. Your body doesn't like that, so it caus...
When lightning hits the water, what happens to the fish?	[ "There was a question like this earlier. Mostly, the fish don't care because the lightening spreads out and dissipates enough to be safe before it reaches them. A couple of 'em will die occasionally, but there are plenty of fish to keep the population going." ]
why doesn’t a plane fall from the sky when it turns?	[ "The plane will always produce lift approximately perpendicular to its wings. If you bank (rotate along the fuselage) the plane then the direction of the lift will rotate the same amount and no longer point directly upwards but rather point somewhat in the bank direction. This results in 2 things:\n\nThere is now a...
Why do containers such as wine and beer bottles do the whole “glug glug glug” thing when being emptied?	[ "Air displacement. When pouring a bottle upside down or covering the entire seal as it empties it creates a vacuum. The positive pressure from outside moves to the low pressure inside the bottle.", "The glug happens as air enters the bottle. Basically if you tried to pull the liquid out without replacing it with ...
What part of the brain is responsible for the 'internal monologue/dialogue' we hear in our minds?	[ "Scientist have looked at brains using fMRIs and found the superior temporal gyrus and the left inferior frontal gyrus light up. \nThose are the areas that light up deal mainly with language. \nA bunch of other areas light up as well, a lot have to do with predicting what other people would do. \n \nTo put it t...
If the moon moves 1.6 inches every year away from earth, and is 4.2 billion years old, why is the moon not MUCH farther away?	[ "Well, if it moved at a constant rate of 1.6 inches per year, after 4.2 billion years, it would have moved about 106,000 miles.\n\nIt's current distance from the earth is about 240,000 miles, so 4.2 billion years ago it would have been about 130,000 miles away.\n\nAs it happens, the rate at which it's drifting away...
Why do you see colors and distorted shapes when you have your eyes closed?	[ "When you're eyes are closed, your retinas are still sensing even though they're not actually seeing anything. However, the only type of data that your brain can receive from your retinas is visual input, so the brain puts an image to what you're sensing. (You see more wild colors and images when you rub your eyes ...
How do we know π is never repeating when could be just a really big series/pattern of numbers?	[ "This is a bit complicated so I'm going to trh my best to break it down in a way that will at least give you something! I'm also not a professional mathematician (though I do have a degree in math). I hope this helps somewhat!\n\nIrrational numbers are numbers that cannot be expressed as the ratio of two integers...
What is code and why is a lot of it in 0’s and 1’s?	[ "This is a really complicated question, but I'll try to answer it as briefly as I can.\n\nYour computer is very much a kind of electrical machine, that manipulates the voltages of different wires, and is designed to preform calculations on those voltages. Scientists realized pretty early on in computer science, tha...
Why do companies buy our information and how is it valuable?	[ "Same answer to both questions - because they want to sell you stuff.\n\nComputer software has advanced to the point that crunching enormous piles of data and getting real actionable insights is pretty easy. As an example - Target's analytics were so good that they started sending maternity oriented coupons to a 16...
what makes leopard and jaguar different	[ "Elephants are the only animals of their kind, leopards and jaguars are not the only animals of their kind, they are part of all the big cats. Elephants are so similar that all are called elephants. Leopards and jaguars are actually not as similar as you think, they just happen to look the same.", "They do share ...
What major changes would occur if Earth started spinning at 25 hours/day? What about 23 hrs/day?	[ "Welp, nobody else has answered so I'll give it a go - I'm no climatologist tho. It sounds to me like you're asking specifically about how such a change would impact climate. With a slower spin, days would get hotter, and nights would get colder. It would be gradual, but the more you slow the earth the more you ...
Where did the original vinegar "mother" come from, if you need vinegar to make a "mother"?	[ "Vinegar is Latin for “sour wine.” All you have to do is let wine go bad under certain conditions and you’ll get a mother eventually.", "Vinegar is wine that has spoiled and gone sour in a somewhat controlled way that leaves a product that is still safe to consume. You do not need a \"mother liquid\" to make it. ...
If two separate plant's light sources are exclusively lightbulbs of equal lumen outputs but one bulb is LED and the other is incandescent, will they both photosynthesize / grow at the same rates?	[ "From a quick google. Yes leds can be used as grow lights. They’re actually beneficial because you can customize the “spectral intensity” to suit different stages of growth.", "It depends on how you are setting up your experiment. and incandescent bulb does not emit the same amount of light at each colour than wh...
Why do Composite signals look so good on CRT's but utterly horrible on modern LCD's of the same size?	[ "Because w/o having pixels, a CRT display isn't able to produce images as sharp as the ones shown by the LCD. The CRT smoothes the image and hides out some of the image defects, if there are. The pixels you can notice by looking closely to a CRT are just a regular pattern on the screen mask between the screen and t...
how come a camera can pick up light on a TV remote when being used but you can't see it with your own eyes?	[ "Cameras use a different system to detect light than our eyes do. Our eyes use rod and cone cells and some weird chemistry stuff. Cameras use various systems - one example is photodetectors with filters over them to select for colors. This system is designed to replicate our eyesight's frequency range as best as ec...
How do just a few satellites give the precise location of a million of connected devices at the same time?	[ "Each GPS satellite just broadcasts where they are, and what time their clock says. That signal can be picked up by any number of devices that have line of sight to the satellite.\n\nThe devices can then determine their position by trigonometry. Radio waves travel at a constant speed, so if you pick up a signal, an...
How has Jupiter’s red spot been such a large and powerful storm for centuries?	[ "Storms are sustained by the conditions of their environment and the spin of their planet. So long as the planet keeps spinning and the conditions stay (normally, a hot center and cold exterior), the storm continues.", "Take a bottle cap and spin it like a top, flat side down, on a smooth, hard surface. Now do th...
What part of physics (QED, GR, etc.) predicts the existence of different phases of matter?	[ "The work on phases of matter exists in the mathematics of statistical mechanics, which is used heavily in solid state physics, condensed matter physics, materials science, and a lot of chemistry.", "Phases of matter tend to fall under the domain of chemistry more than physics. When they do fall into the realm ...
How does this image have lines from the TV on it that change depending on zoom?	[ "It is called a [\"Moire pattern\"](_URL_0_) and it happens when two regular patterns don't sync up leading to patches of interference. This is very common when taking pictures of digital displays as the pixel grid of the display is unlikely to match up with the pixel grid of the image capture device." ]
why Americans are more used to air wents on a floor for heating their homes and Europeans are using radiators and floor heating?	[ "We do also have floor heaters and radiators if it’s an older home, but since have moved to forced air systems. Cooled and heated air can move through the same vents to get to the rooms from the unit. Since the units are usually in the basement imagine the system being a trunk of a tree, and the vents are the tips ...
How do some animals, such as scallops and clams, function without organs?	[ "Your premise is totally wrong. Scallops and clams absolutely [have organs](_URL_0_). Even if you weren't wrong about, there are still other organisms without differentiated organs. I mean, all bacteria have no organs. They're just single cells. Less complex life forms don't need specialized organs for things, so t...
How can something be 46 billion light years away from Earth, When the age of universe itself is 13 billion years?	[ "The universe is expanding faster than the speed of light.\n\n[This video](_URL_0_) goes into how the universe can expand faster than the speed of light and personally I find it easy to follow.\n\nThe basic explanation is that the speed of light limit does not apply to the expansion of the universe.", "The univer...
Could Queen Elizabeth refuse to accept a Prime Minister? What would happen if she did so?	[ "The Queen has to decide whether the proposed new PM \"commands the confidence of the house\" i.e. could the PM lead a functioning government. \n\nThe Queen can quite legitimately send the proposed PM away if she thinks that a functioning government is not possible, but in reality this will never happen because: \...
how do ads load on bad service but normal content doesn’t?	[ "Youtube (through Google) have many, many servers across multiple regions of the world to store their data. Very popular content may be hosted on multiple servers to constantly have it closer to the viewer, and on faster servers.\n\nLess popular, more normal content will not necessarily be copied on multiple server...
What is brain plaque and what can happen if it is not taken care of and how can it be prevented?	[ "Alzheimer's disease involves amyloid plaque. No one quite knows why, although there are theories. [For some reason, amyloid protein breaks down and forms \"plaque\", which are blobs of goo that the brain can't remove.](_URL_0_) Alzheimer's also involves tangles of Tau protein, which is a structural support that...
Why is the magnetic North Pole moving faster than the magnetic South Pole?	[ "I am not a geologist, so i will try an explanation based on physical and mathematical intuition:\n\nThe south magnetic pole (SMP) lies significantly farther away from the geographic south pole (\\~2800 km) compared to the north magnetic pole (NMP) which lies \\~600 km away from the geographic north pole. Given th...
How does different spf’s on sunscreen (sublock) affect the tan you get?	[ "It blocks the UV B rays which cause you to tan. The higher the SPF, the more it blocks the UV rays. \n\n_URL_0_" ]
Why does metal bend but stone break?	[ "Metals stay together more or less electromagnetically. All of the metal atoms are packed tightly enough their electrons are constantly switching around between them, which makes for a very strong, but also somewhat malleable material. There's not really any specific structure to them at the atomic level. \n\nRocks...
Why Does English Have So Many Strange And Varied Collective Nouns For Animals?	[ "> These just seem like jokes \n\nPretty much, yes. [Terms of venery](_URL_0_) are essentially an in-joke from the 1400s that happened to get written down. Some modern English speakers like them, most don't know about them.", "There is no real point to it, it is as much a celebration of the sheer variety of the E...
How do synthesizers work?	[ "A synthesizer can make all kinds of interesting noises. It does this with the help of modules.\n\nModules have inputs, outputs and sometimes also settings that can be changed.\n\nConnecting the outputs of modules to the input of (other) modules as well as changing the settings of those modules creates a 'patch'.\n...
how a blister is formed.	[ "Something causes a break between the layers of the skin - like heat that breaks connections between layers, or movement that mechanicaly tears it. The inner layers are living tissue, and so contain 'lumph'- the fluid that surrounds all living cells. This lymph pushes open that break made between layers, pushing th...
What decides the volume and duration of a thunder clap?	[ "Imagine the soundwave/shockwave of thunder like an invisible cylinder around the lightning you just saw. That cylinder is created at the moment you see lightning, and it grows in radius at the speed of sound (approx. 300m/s). Now on the surface of that cylinder there are one thousand of tiny little surfers, each o...
Why do England, Wales, Scotland and NI compete in world cups but join together for the Olympics?	[ "Many popular sports originated in the UK, so the first \"international\" competitions were between the nations within the UK.\n\nNow many other countries take part, but the idea that the UK nations compete separately has been grandfathered in. For example FIFA has an explicit rule that each of the four \"British A...
Equality vs Equity	[ "Think of \"equity\" as \"fairness\".\n\nNow, imagine you are a teacher, and one of your students comes up to you saying they have cut their finger so you give them a bandaid. The next child comes up to you saying they have a headache so you give them a bandaid. Another student says they miss their parents, so you ...
what keeps our bodies from decomposing before we die?	[ "You can absolutely start decomposing while alive! We call this necrosis and it smells absolutely revolting\n\nWhen a cell is faced with some kind of stressor, such as bacterial/viral infection, injury, chemical changes, etc., its membrane dissolves and it basically explodes. If a bunch of cells explode in sequence...
Is there a Radio Frequency Camera?	[ "Yes, but the resolution is limited by the wavelength. Radio telescopes use multiple dishes and interferometry for increasing resolution, but they need to scan just like single dish telescopes. \n\n[Micro bolometer focal plane arrays](_URL_0_) are becoming used for radio astronomy, but are limited to short waveleng...
How do pets know their names?	[ "Only through repetition and reinforcement. They gradually learn that whenever you make this sound, you then pay attention to them.", "They first learn to connect their name with food, most owners call their pets for food. Scratches and petting feels good for the animal and owners call pets name for attention. ...
Why does the WiFi signal get better as soon as you disconnect then connect back to it?	[ "The network may have multiple access points, lots of devices will connect to a certain access point and hang on until they are kicked off.\n\n & #x200B;\n\nDisconnecting and reconnecting will force your phone to connect to the strongest source.", "One thing I haven't seen here is that wireless systems are design...
Where does money from FTC fines go? How is it used?	[ "Federal fines are paid to the US treasury, where it's used for general government spending. Most agencies don't get to add the money they collect as fines to their budget. \n\nKeep in mind that most settlements report a number that's called a fine in media reports, but may include actual fines paid to the treasu...
Why does a 1080p Nintendo Switch look great on a 4k TV, but a game in 1080p on a 4k computer monitor look so pixelated and bad?	[ "As people have said, distance, but there is another factor.\n\n4K computer monitors are really only designed to display a 4K signal well. When you send a lower resolution signal, they use very basic techniques to upscale the image and this looks bad.\n\n4K tv's on the other hand are actively designed to be able to...
What is an Order Book and Price Level, and how are they different.	[ "Do you have context for this? Those are fairly common terms that can mean different things based upon the company , industry, or other factors." ]
How can a phone send data back to a cell tower antenna if it is miles away?	[ "I think that the cell tower has a big antenna to send, and a big one for receiving.\nLike a cinema screen and a telescope\n\nEdit:\nYour phone is like a guy away that observes and does hand gestures, the cell tower does the rest" ]
Why doesn’t Wikipedia just run enough ads to keep the site running.	[ "It is inevitable for a business to have to grant some control to those that finance their operations - it becomes the source of your salary, that budget your sitting on that lets you get a raise, or give a raise, that plan for the new office, of for Friday donuts....all depends on money.\n\nIf you create a channel...
100AH battery should charge at 10% capacity tops safely....?	[ "Look at the data sheets for the battery because the manufacturer will tell you the data.\nEven for general rules is depend on the battery technology you usel Li-ion is quite different from lead-acid.\n\nA 100AH battery charging at 1.1 amp do not take 2 weeks. If it 1.1A all the time it take 90 hours that is a bit ...
Why an ulcer blister under your lip hurt 100 times more than a regular blister, cut or wound of any sort.	[ "Is the question about \"why ulcer at that specific spot hurts more\", or about \"why does ulcer hurt more than blister\"?\n\nNot sure about second one, but as for first - your lip area is a lot more sensitive, because it needs those nerve connections to figure out what you're eating/drinking/touching/etc. Therefor...
What's the rationale behind extraordinarily long prison sentences? (i.e. 'multiple' life sentences, or 100+ years)	[ "In case evidence turns up to negate one sentence. The person is responsible for all the crimes they committed, not just one." ]
how stock owners pay for stuff	[ "Generally, executives who receive their compensation in terms of stock are already wealthy enough that they have enough liquid funds (i.e. cash) to live quite comfortably. They also will do periodic selling of small amounts of their stock to cash in on particularly good stock performance. \n\nAlso, company execs a...
Are there limitations to who you can represent when you’re a lawyer?	[ "Depends on your jurisdiction (jx). I'll speak from the perspective of a US lawyer. \n\nWhen US lawyers sit for the bar exam (which varies by state), you take an exam that, if you pass, allows you to practice in almost any type of law. For example, I could do civil litigation today, bankruptcy tomorrow, and crimina...
How exactly does a benzodiazepine and opiate overdose kill you?	[ "But how do these drugs actually kill people? When a person smokes, snorts or injects an opioid, the substance enters the bloodstream, then the brain. There it can act on mu-opioid receptors, says Eric Strain, director of the Center for Substance Abuse Treatment and Research at Johns Hopkins University. “Once the d...
How does HBO afford such big budget shows or the silly expenditures of shows like Last Week Tonight without ad revenue?	[ "Cable. Subscription services make bank, especially with how many people are subscribed to HBO lately.", "the same way as netflix. subscriber revenue and content creation. hbo is old enough to be self sufficient now. but netflix is still burning through cash and has negative profits at times during it's expans...
Why can't a sitting president be indicted for a crime?	[ "Because there would be nobody to prosecute him.\n\nIt has happened. Lincoln suspended Habeas Corpus, the Supreme court ruled it was unconstitutional because the President lacks that power in the constitution. \n\nDid he go to Jail? No. Did he even go to court? No. All the people that might have arrested him or...
why have planes stopped getting bigger?	[ "People want to fly directly to their destinations. In the past airlines focused on a \"hub and spoke\" system where small planes flew between small destinations and major hubs and huge planes could fly between the hubs. The development of long-range, fuel-efficient medium-sized planes enabled more \"point-to-point...
How do researchers know when they have found a new species of an animal and not an already discovered species?	[ "multiple factors go into deciding if something is a new species. usually, a color change alone won't be enough, but multiple small changes, or a few big change usually results in a new species.", "People who find new species tend to be experts in that type of organism so they are familiar with the already known ...
If 25 degrees Celsius (77°F) is a comfortable ambient temperature, why does it feel so cold when you bath in water of the same temperature?	[ "Water is more effective than air at transferring heat (feeling cold is really just another way to say heat was transferred from you). \n\n\nAir around you (assuming it's not windy) will heat up close to your body temperature quickly. You are now in your little heat bubble. Air doesn't take much energy to heat u...
Why are sore throats so bad in the morning?	[ "Little bit of speculation, but perhaps because you're dehydrating your throat (your entire body really) plus not washing away any of the bacteria? \n\nYou tend to have worse breath in the morning because everything just sits in place overnight. Additionally I know when my mouth is dry (from not having something t...
Why do you see two shadows of something when there are two lights?	[ "Shadows aren't 0 light, they are less light. So when tou have 2 light sources, generally everything is twice as bright, except where the object is in the way, when it is only 1 times as bright." ]
What is the hard problem of consciousness and why is it so hotly debated?	[ "The hard problem, per David Chalmers, is that sentient organisms seem to have what are called \"phenomenal experiences,\" or \"qualia\" - that is, they have internal mental states that are subjectively different for each individual, that those individuals seem to experience just as they experience states based dir...
Why are birds considered dinosaurs instead of dinosaur descendants/relatives?	[ "In biology, proper groups of animal species (or plants for that matter) are monophyletic. That basically means a group includes and ancestor and all species descended from it. So by definition all dinosaur descendants are dinosaurs...you can't have a descendant of a group not be in the group.\n\nThe reason we do...
What happens inside our bodys so that, after some time, we can no longer hold weight in the air	[ "It is the ATP-ADP cycle. Your muscles need energy to be able to contract, in the case of the video his shoulder, forearm, and bicep muscles were all contracting to support the weight of the pylons.\n\n & #x200B;\n\nHis muscle cells were using ATP along with glucose to contract, which turns the ATP into ADP. But hi...
What does the term “uncanny valley” mean?	[ "Vsauce channel on youtube has a verry good video and explanation of this...check it out. Btw: All of Michael's videos are awesome\n\n_URL_0_" ]
How does anesthesia work during a liver transplant?	[ "Nobody really knows how anaesthetic agents work, including anaesthesiologists. There are a few theories though." ]
how do milkshake mixer machines stay clean?	[ "The spindle is stainless steel with a small little plastic agitator on the end. Milkshake doesn't tend to stick to the stainless very well and if you give the thing a little spin as you take it out of the milkshake but before it clears the lip of the mixing cup it just flings whatever is still on it into the cup. ...
If an asteroid is on a perfectly tangent line with the Earth’s surface, is it possible for it to roll along the Earth rather than just collide and stop?	[ "The Earth's gravity combined with aerobraking from the atmosphere would pull it in and down. A straight tangential line isn't possible." ]
Why are there so many website url extensions (eg; .com, .org, .net) and no universal one ?	[ "TLDs (Top Level Domains, what you called extensions) are usually ruled on a nation-wide level. And as we know the world can never agree on something and everybody wants to do their own thing. So there's that.", "Top Level Domains (TLDs) were originally designed as a way to help organize everything out there. ...
why do flamingos stand on one leg and do they have a dominant leg?	[ "It is a resting behavior. They spend a good deal of their lives in the water and can sleep in that position. As for dominant leg most creatures have a dominant side, this is more obvious with creatures with hands. \n\nAnd I am certain that flamingos don't think about it. Having worked with them for years I can...
How did people train for running long races before computers? Specifically, how did they know the km distance of their training runs in order to follow a training plan?	[ "Get in a car, set the trip odometer to 0. \n\nDrive desired route, see the miles.\n\nDo math to convert miles to KM - multiply the number of miles by 1.6" ]
Why can’t phones and computers charge almost instantly when you plug them in, instead taking 2-3 hours?	[ "Electricity is stored in batteries as chemicals held in two different containers separated by a filter-y thing. Letting electrons flow from one to the other through your phone (for example) is how it discharges.\n\nForcing the chemical reaction to go backwards is how it recharges, by way of a smaller circuit conne...
why is carbo-loading before an event supposed to give me energy, yet I never have any energy despite eating mostly carbs	[ "A lot of your reasoning here is an oversimplification of complex nutritional concepts.\n\nLet's start with how your body processes carbs. A carbohydrate is a chain of sugar molecules. Your body breaks down the chain into individual sugar molecules, which then go into your blood, which feeds your cells, and gives y...
what is the butterfly effect?	[ "It refers to \"one small change can have dire and catastrophic consequences\"\n\n\"kill one butterfly in the past, ww3 in the future\"\nCan explain a crazy chain of events that COULD happen if the right sequence is triggered. A popular video game that utilizes this trope is the horror game \"until dawn\", where ev...
If you're stranded in the middle of the ocean and start to feel dehydrated, why is just drinking the seawater around you bad? Why will it not hydrate you?	[ "Osmosis. Salt water has more salt in than the cells in your body and your blood. So instead if drinking salt water and the water being absorbed, it actually gets drawn out of cells towards the saltier water. You end up peeing out more than you drink because the kidneys can't concentrate the urine more than the sal...
What is a schizoaffectice personality disorder? How does it affect a relationship? Do you have any experiences with being in a relationship with someone who has a sad?	[ "In terms of mental health, SAD is an acronym typically reserved for Seasonal Afflictive Disorder, which is something different. Schizoaffective disorder is basically like schizophrenia and bipolar disorder had an angsty child together. Its manageable, but it never goes away. I would imagine that it would make for ...
Why was it custom for men and children to wear suits, ties and other smart clothing during the 1900's?	[ "That was just the style back then. You always had to look your best when going out in public.\n\nEdit: I had a neighbor years ago who was born in the 1910s, I believe and he'd put on a suit, tie and hat to go to the mailbox.", "That’s what they had. Like an earlier poster said, knit fabrics were not yet being pr...
Honestly, how does time, or the concept of “time,” even work?	[ "Could you explain what you're asking? Time is simply the fact that all things doesn't happen simultaneously", "the universal idea of time that most people think of on a daily basis has existed for as long as humans have. it better helps us to communicate ideas and order events so that we can all function togethe...
How do charitable promotions work a large stores?	[ "Yep you are right. Lets think of an item. This item costs the store 8$ then the store sells it for 11$. So the difference there is 3$. Of the 3$ let's say 2$ goes towards employee salaries and business expenses. Then 1$ is the profit. If the business is saying they give 10% of profit sold to charity it means 0.10$...
How exactly is a calorie "burned"?	[ "From a chemistry standpoint, they mean it quite literally. \nA calorie is a unit of energy. \nThis energy is stored in the chemical bonds of a molecule, almost always in a molecule of carbon, oxygen, and hydrogen. \nWhen you eat and digest it the food, it turns into one of those molecules your body can burn for ...
Why aren’t you supposed to cut the tags off your mattress? What happens if you do?	[ "That's just for the retailer. It has important fire safety notices for the consumer.\n\nI'm pretty sure it's a Federal crime to remove the tags unless you're the owner." ]
Why does WiFi in a house or office still suck in an age where we can have a drone transmit a WiFi HD video signal from a mile away?	[ "I wouldn't say WiFi really sucks.\n\nIt all depends on the setup you have: if you have a sufficient number of access points (antennas), or if the ones you have are strong enough. Your house plays a big role in this as well, thicker walls means a bigger loss in signal strength. There's two frequencies used right fo...
How does going through an emotional episode (ex. heavy crying) physically exhaust the body, when you’ve likely stayed mostly stationary throughout it?	[ "While your body was stationary, your muscles inside your body were not. Your heart was pumping faster, andrenaline was being injected into your muscles, you were tense, etc.\n\nAndrenaline itself is well known for leaving the muscles feeling tired once it leaves.", "Each time you sob, you flex a lot of muscles s...
How do micro organisms survive in the stomach?	[ "There a many many many different types of bacteria. A lot like environments that have neutral acidity, normal temperatures, and low levels of salt. However then there are some types of bacteria (called extremophiles!) that like high temperatures or high salt levels or acidic or basic environments. The acidophiles ...
Why is fiberglass not considered as dangerous as asbestos?	[ "Asbestos fibers are small - really, really small. They can easily get past the body's defenses to particulates (mucus membranes, fine nasal hair, etc.) and settle deep in the lungs, where they cannot be removed by any biological process. These fibers persist and irritate the lungs, leading in many cases to a par...
Why do sad situations make it feel like our hearts are actually hurting, when it's just an emotion.	[ "When faced with stressful situations (includes situations that make us sad, like a break-up, or a death of a loved one), the body produces fight-or-flight hormones. These have an effect on the blood vessels on the heart, raising blood pressure and increasing heart rate, which all increases the stress on the heart....

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