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Why do colds and flu get worse at night than they are during the day? | I have two theories on this. 1) You're laying down at night and therefore all the mucous etc that has been draining down your throat all, just sits and collects. 2) All of your stress hormones are highest in the morning. These stress hormones can help you fight a cold/flu and are sometimes even given to sick people to ... |
When doing surgery, how are surgeons able to see what they are doing? How is there not bleeding obstructing their view? I.e. surgery to remove a fibromatosis from a finger. | That's why they have monitors to magnify the area of operation. Not to mention they have a team of people who are in charge of blood suction and other cleaning / clearing duties", 'The surgery techs use a combination of clamps on blood vessels and suction to keep the area mostly clear of blood.They use clamps to pinch ... |
Why do bands play songs at a higher tempo when performing live? | Dj's don't. A play button can only be pushed that fast Adrenaline is making the artist rush. Keeping pace is actually not easy. In studio every part is played in with a metronome to keep exact tempo. Live they don't have a metronome, so they have to keep pace themselves, which is never perfect. Once one person starts s... |
Why does eating the same breakfast cereal for a long period of time eventually make you lose its taste? | To put it most simply, your body builds up a tolerance. It's gotten so used to it that it doesn't notice the flavoring unless the amount of flavoring increases or otherwise changes. It treats it as just something that's there at this point and not worth noticing. |
Why are there no mammals with more than 4 limbs? | A rough idea would be along the lines of evolution being like engineering with the best design being the one with the least moving parts to power / go wrong. As mammals are large creatures, especially compared to insects, they require considerably more energy to survive and reproduce so the less limbs you have the high... |
When we’re exercising, where does all of our fat actually go? | It's essentially burned albeit slower than a fire burns. What's left is CO2 which is exhaled and H2O which will be urinated if not used for anything else.fat is like a zip folder for the chemical energy stored in food. when it is unzipped, that energy is consumed by the body—temperature regulation, powering organs, etc... |
what causes color blindness in humans? Also how do we know what colors animals can actually see? | Others have covered color blindness pretty well. When you want to test what colors animals can see, there are basically two ways to get at it. The first is looking at the eye itself. You can test the pigments in their eyes to see what colors those respond to, giving a basic idea of what's physiologically possible. You ... |
How does Modafinil work ? | It works great for me. It's like having coffee, without the jitters. And with a big enough dose, it feels like my brain is sizzling with energy. |
Why are West Virginia and Mississippi always at the bottom of quality of life rankings? | Landlocked states get less shipping & trade. Both states got utterly buggered in the civil war, and they're electorally irrelevant so nobody cares. |
Why are we using kg/cm² as a measuring unit for pressure when it implies mass per unit area not force per unit area? | Given a constant for gravity, this can be easily translated into force per unit area. As a rule, we don't use kg/cm^2 but someone might do so , with the unspoken assumption that we're working in earth gravity. |
Why do PC and monitors/TV still have a VGA port? | Same reason a lot of TVs still even have RCAs and a co-ax cable connection. First the electronics required to handle even the older signals have been miniaturized and maybe even put onto single chips; they're by nature of having been in market for 20 yrs very inexpensive, and they're not going to take up a lot of your ... |
Why do some foods change urine? | Certain compounds aren't eliminated during processing in the body and instead are eliminated via the urine. Asparagus has a compound in it that is sulphur based thus the strong smell. Also dehydrated urine is darker because you still have the same amount of stuff your body needs to get rid of, but it isn't diluted as m... |
Despite the Wall Street Crash of 1929, What other factors caused the Great Depression? | - American firms earned record profits during the 1920s and reinvested much of these funds into expansion. By 1929, companies had expanded to the bubble point. Workers could no longer continue to fuel further expansion, so a slowdown was inevitable. - While corporate profits, skyrocketed, wages increased incrementally,... |
How does wind actually work? I mean, I know about how the cold and warm mix and stuff but really, how does it work? | Air particles are always flying around at around 1000 mph, constantly bumping into stuff. A 'low pressure' area means either the particles in that area have slowed down, or there's a lower density of them. A 'high pressure' area means either the particles in that area have gotten faster, or there's a higher density of ... |
Why do related parents mean higher chance of developing illnesses? | You're more likely to have the same recessive genes. Those are genes, that don't really show anything unless you have two of them. Dominant genes however always show up, if alone or in a pair. You inherit half your genes from your mum amd half from your dad |
What are the long terms affect of cannabis smoke on the lungs, brain and body as a whole? | r/neuropsychology has a article on some of it's effects just sort by top of all time but its difficult to understand but you will probably be able to get the gist of it. |
How would the value of currency in a fully digital economy work? | It kind of already is. The us doesn't have enough gold to cover all of its currency. So we already have a economy where some of the money is only valued because we decided it is and keep going with it. So really it'll be how it is now, since really gold only has a value we give it. Just like digital currency. |
What is the point of "laugh tracks" on sitcoms? | To make it seem funnier to the masses. If someone tells a joke and people laugh it can coerce your brain into a social agreeance response. Possibly because things used to be live and they liked that feel, that nostalgia it brings as 'how it's always been' I hate them. |
Why did the Brits ship IPA instead of other barrel-aged beers? | This has nothing to do with barrel aging. The hops were used as a preservative so the beer wouldn't go bad in the time it took to ship it. Honestly it was probably also used to cover up bad flavor as well - many micro brews use hops to compensate for bad flavor. |
How does 1 - - 1=2? | Think of -1 as something owed. If I have -1 donut, I am owed a donut. If I have 1 donut and I'm owed a donut, then really I have two donuts, just one isn't with me right now. |
How is it that we can scratch our skin to the point of bleeding if we are super itchy, but will later feel pain in that area if we only did what the body wanted? | As someone with a massive scab up the calf from an insect bite itch, I'd like to know this too. |
How would you explain the purpose of having friends to someone who genuinely had no understanding of the concept? | The reward is in someone you can trust to talk to about all the dumb shit in your life without being judged for the way you feel about it. They'll show up when you're broken, laugh with you when you're whole. You can sleep on each others couches just cause. It's worth it, life long, and satisfying. |
Why is 24/25 fps okay for video but painfully low for gaming? | It's nit really a problem of smoothness, but a problem of delay: at 60 FPS you get 1 frame every ~~thousandth~~ sixtieth of a second, but at 30 it takes double of that, so you have effectively double the delay from your controls to the screen, and that is without including the time it takes the computer to process your... |
Why do humans find the sound of rain calming/relaxing? | The people that hunkered down and took shelter during rain were more likely to survive than the ones that didn't or couldn't. |
Why when touching something really hot we initially perceive it as cold? | I read an article on this that said that if an object is really cold, say -100F, your brain can't tell the difference between cold and hot so the object will feel like it's burning when you touch it. |
Why are we able to sense people's presence? | When it comes to presence i think a lot of it is sub-concious expecting someone to be there, as the other person said, you don't remember the times you were wrong, just the ones where you were right. A little more concrete though but perhaps not really your question, our eyes have developed the white part because we're... |
Why does America have such a hard time accepting that universal healthcare is a generally good thing? | Money. Simple as that. And the insurance industry is one of the biggest fucking rackets of all time. Nothing happens in this country unless there's money to be made. And it doesn't really matter how good of an idea something is, if it threatens to lift a few billion out of a few people's pockets, it will get shot down ... |
Why do new car dealerships exist in their current state? Why aren't their Ford- or Toyota-owned stores with salaried or hourly employees? | There was a big problem in the early days of cars, car companies went broke. This left the people who bought their cars the year before in a lot of trouble, unable to get spare parts, without access to the information needed to make repairs . To fix this problem, Government passed a bunch of laws about who could sell c... |
What's the difference when working out when doing high reps medium weight and low reps and heavy weight? | To become more lean you'd want to do high reps medium weight, and to become bigger you would opt for low reps high weight. Going with higher weight works your muscles more, and the more you break down your muscles the bigger you can build them back up. |
How much of the internet that I see is limited by my location in the world? | Well, the US is a disproportional part of the Internet. Head over to _URL_0_ . If you can't see that, you can't see China. Of course you won't see links to there from most English websites, because they don't use English on the site. |
How can searches on a PC influence targeted ads on my phone? | Do you use Google Chrome/were you logged into Google while searching? Have you ever logged into Instagram on your PC? Do your Google account and Instagram account share the same email? If you answered yes to one of these questions, there's your reason. |
What causes sudden random brief pains in healthy people? | You're diaphragm aka singing muscle. It's located right under your ribs and will sometimes spasm like muscles do, and feels like a sudden knife jabbed into your side. I get these often. It'll hurt like hell for about 2 mins then go back to normal. I cant breathe normally during that time or I just get repeated stabbing... |
How do gorillas grow to be so big and muscular when they are basically vegan? | The real question here is more like, why are humans so thin with diets so high in protein? This is primarily because our muscles decay when not fully used in a way that almost no other mammal's muscles do. This means that in order for us to retain large muscle mass, we have to eat absurd amounts of protein and keep exe... |
why when you're deep in thought or thinking about a memory, you seem to completely zone out of your current surroundings and feel as if you're almost reliving the memory or thought? | To add to the excellent explanation you already got, it's also important to note that the brain is not very good at telling the difference between imagination and reality when it comes to its physical and emotional responses. It experiences the imagination as if it's really happening, and this is more pronounced in som... |
Why are Canadians so stereotyped? | If you're American, it's because you tend to have a better idea/more stereotypes about the people around you. People from other countries won't have as many associations about Canadians, other than those pushed by American media. Basically, when you think about your classmates, you have way more things you can think of... |
How is Tesla worth more than General Motors even though they only sell around 250k cars and GM sells 4.7 million cars each year? | Tesla doesn't just do cars. It also handles all the other applications for their battery tech, and their battery tech is impressive.Please remember Tesla is an energy and a car company. Both which are growing at a rapid rate. Both with good good margins.G.M. has lots of resources tied up in building the cars people are... |
why is there the two rows of elements that don't fit in on the periodic table? How do these 20 or so elements fit into those two single spots? | It's just how the periodic table is set out usually. There are various other ways of setting it out [including some] that [are circular]. The layout comes from solutions to an equation in Quantum Mechanics; as you go down the table the possible number of electrons goes up quite a bit. It is 2 at the lowest energy level... |
Why is the house market so inflationary? | Real estate is something everyone wants. Real estate is something that is well-known for making money. Everyone wants to own a home. People want to live close to cities/transport/other people. Because of this, you've got investors and normal buyers competing for a mostly fixed supply - houses are being built on the fri... |
Why are the three primary colors red, yellow and blue, but computer system color palettes use red, green and blue as their base colors? | Think about the sun. It emits white light. What this really means is that it emits red, green, and blue light. These colors can be combined in various combinations to make white light. So white technically is not a color. In physics, it's defined as the sum of all possible colors. If you pick up a prism, you'll see tha... |
Why is water bottled and not canned. | A can is more expensive, harder to carry around and reuse, and just not necessary. Canning is good for creating a long term seal for things like cooked food and holding in gasses . As water won't spoil or go flat, bottling is much more convenient.Water can be canned, and has been. Plastic is cheaper, and it actually se... |
Why isn’t Braille just raised letters? Wouldn’t it make more sense if it was? | Imagine being blind and trying to feel the difference between an O, 0 or a Q. ~~See~~ Feel what I'm sayin? |
Why do kids feel no pain when they step on their own toy but for adults it's like getting stabbed in the foot? | When I step on my nephew's Legos two things with against me. He is three and weights about 35lbs. His foot is about for times the Lego. On the weight alone I'm pushing down 6 to 7 times more. That by itself makes it bad, but my foot is used to much larger area to put that weight down on. That makes it even worse. |
when my nose is blocked and I lay on my side, why does it feel like the block is moving to the other nostril? | You have little plugs at the back of each side of the nasal cavity that use blood pressure to inflate and deflate. They normally alternate back and forth every three hours or so to give your sense of smell a rest on the side that's partially closed. When you have a stuffy nose it's much easier to notice the difference ... |
What does the rocket equation find? | The equation relates the size of the rocket you need to the speed you need to achieve. Let's say you have a rocket that's 10 times heavier than the cargo and can accelerate the cargo to 3 & #8239;km/s. If you need a speed of 6 & #8239;km/s then you now need a rocket 100 times heavier than the cargo. For 9 & #8239;km/s ... |
Why do our fingers become very sensitive after cutting our nails? | You may be trimming your nails too close and exposing the nail bed. There shouldn't be any difference in sensitivity. |
Why doesn’t America give you the exact total of purchase and adds the tax right at the end? | Some states have laws that tax has to be shown separately. This is to prevent unscrupulous stores from raising prices and blaming it on a fictional tax. Remember, much of our current law was written in pre-internet times when it wasn't as easy to get current information like that.I think it has to do with the fact that... |
Why do USB connectors have 2 sides? Every time I go to plug one in I have to turn it around... | The standard Type-A connector has four pins. The leftmost and rightmost, if you're looking at the connector with the pins on the bottom, are the ground and +5V pins respectively. The connector is not symmetric for two reasons: one, the pins are all on the same side; if the cable didn't have the obstruction, the pins wo... |
why is it so difficult to explore the deep ocean? | Water is super heavy so when you go deeper, it puts a lot of pressure on you or whatever you're in. A submarine has to withstand the pressure, and carry air for it's crew. If you've ever tried to swim to the bottom of a pool while holding a beach ball, that's kind of what it's like. |
How does a person forget large portions of the night when they are too drunk, but are still able to drunkenly function and is it the same as being roofied? | So 1.5g ethanol on 1kg of your weight causes the first stage of drunkeness you get more confident have better mood and be more prone to socialize. This stage is why we drink alcohol. At 1.6-3g/kg is where you get slower response time, getting sleepy and moody even aggresive this is the drunk state in which we get those... |
Why does your body feel suddenly ill after sleeping but you don’t feel a cold coming progressively when you’re awake throughout the day? | I have felt a cold developing throughout the day. It felt weird, and it's only happened once. Your question still makes sense because of how rare this is. I think there are a few factors that make this a rare occurrence. One not mentioned elsewhere is that you are horizontal at night. This allows mucus to accumulate in... |
Why do a lot of people feel more tired in the morning and more awake at night? | Some people are natural night owls, others are natural morning people and a third group are adaptable. People in the third group tend to think everyone is like them and could just 'get used to it' with habit or sleep hygiene tips, but the reality is that some people are predisposed to be active later in the day/night a... |
If California has yearly fires, the shouldn't the state just cut a crap load of fire breaks to protect communities? | What about moats? Effective against wild fires as well as unwanted visitors! Jehovah's witnesses? Draw the bridge!", 'They were saying this year that the embers world carry over lakes and start new fires. Soooooo ..It is illegal to do this in large parts of California because of the endangered species act. The shrubs t... |
What are the benefits of using metric system over English standard system? | It's easier to learn and use, because it's a base 10 system and our numerical system is also base 10. It's especially true for more complex math. |
Why do people wear underwear? | 2 reasons: 1) I want a bit of barrier between my junk amd my zipper, because I don't want to accidentally give myself a circumcision. 2) No matter how you wiggle, no matter how you dance, the last 3 drops always end up in your pants.Underwear turns dirty faster than pants do and requires cleaning more often. It's easie... |
How can scammers spoof phone numbers? | Caller ID is a value that's sent by the callers phone. Corporate phone systems intentionally allow you to set a caller ID that's not the same line. So you always call back to the main line, got some inside desk phone. Which means it can be used to give a number that doesn't even belong to you. But that's not controlled... |
How do fish get into closed off lakes? If a lake or a small pond is digged, after a couple of weeks fish are already swimming there. How do they get there? | Flooding and birds have been known to transport fish, lake to lake. Correct me if I'm wrong, but it's theorized birds will do this to increase the available food sources when the populations increase. |
What happens when we inhale food? Does it just get stuck there? | The inside of your nose is always producing a sort of lubricating fluid which dries out to make boogers. It is then moved out of your body by microscopic ''hairs'' which can wiggle and push stuff around. It will probably exit you very soon or it already has. |
Why do animals seem to have a hard time seeing themselves in a mirror? | Most animals have no idea what they look like and don't even know the mirror is there. Typically they think it's another animal and either ignore the mirror or go crazy thinking another has joined them. |
Why does alcohol make us feel like socialising when we would otherwise have no desire to? | It doesn't, alcohol accents how you really feel, often enough the stuff we think we don't want to do we actually do want to do and alcohol removes the fear |
Why do trains use steel wheels on steel tracks instead of another material, like rubber, for more traction? | Some high speed trains used to use dual block wheels which were an outer and inner layer of steel with rubber sandwiched in between, this gave a much smoother ride. And [here] is the reason they don't do that anymore.Strength. You give me a material that will last thousands of miles bearing 130 tons on top of it travel... |
When I'm doing CPR on a person and I'm breathing into his mouth, am I not breathing CO2 into his mouth because i exhale CO2? | People here have explained it well. I'd just like to add, that's why we do 2 breaths every 30 compressions. Normal human breath in: 21% oxygenNormal human exhale: 15% oxygen2 exhaled breaths: 15% + 15% |
how does the Dewey decimal system work, and why does it seem to be phasing our in libraries? | The Dewey decimal system has been around for a long time. It is often used in the UK and I imagine elsewhere It groups non-fiction books by topic.For example the 500's are the sciences. Within that it gets broken down further and further, so 570 is biology generally, 577 is ecology and 577.15 would be a niche within ec... |
Why have birth rates been declining since the "Baby Boom" of the 1950s ? | Easier access to contraceptives, sex education, and abortion. Women going to college, choosing careers, essentially starting later in life- and then continuing on to have fewer babies. If you start your family at 30 instead of 18, you probably are not going to have 5+ kids. And you probably can't afford to stay home to... |
Why do you wrap/cover food when you put it in the refrigerator? | Refrigerators will slow down the growth of bacteria and fungi, but they'll do little to stop chemical processes like dehydration or oxidation. The air itself is chemically attacking your food, and wrapping things up helps slow this down. |
Why do headphones get so tangled up and knotted in a pocket? | Basically the amount it becomes knotted depends on the length of cable and the amount of agitation it's exposed to in your pocket It also a factor that the plastic like material it's covered in can add to the agitation Further reading should you want to know scientifically: _URL_0_", 'Inside every pocket is what's call... |
Why does inflation happen and what causes it? | Let's say your estranged Aunt Eunice passes away, and leaves $10,000 to you. You suddenly have more money - and, most likely, you use some of it to pay for things you couldn't afford before. Say, a big flat screen TV. Now let's say everyone in your city has an estranged Aunt Eunice pass away and leave them $10,000. So ... |
Why does it seem like I look better in the mirror than I do on a camera ? | It's most likely to do with your definition of better. The mirror reflection will look normal to you; you will be more comfortable with it as you see it more frequently than camera photos. There is a difference because a mirror image is flipped. Additionally, it may be because camera flash can create unusual shadows, o... |
With so much YouTube drama, it seems there would be a huge market for an alternative site. Why isn't there one? | It's incredibly expensive to run a site of Youtube's scope, and the site itself runs at a loss. It's much easier for other sites to specialize in one type of content than to try and become something that loses hundreds of millions of dollars a year. edit: Google doesn't provide actual numbers on how much Youtube itself... |
Why does the Google Play Store app require Google services to be installed as opposed to being installed with an .apk like any other app? | Politics. You know how Microsoft had a monopoly over Operating Systems? All computers had Windows, and all computers came with Windows, and you couldn't buy a computer that wasn't running Windows unless it was a Mac, in which case none of your programs would run? Well, Google's the new Microsoft. You don't remember tha... |
Why do trees on hills grow mostly upward and not perpendicular to the slope? | Plant growth direction is influenced mainly by gravity and light direction, not the angle of the surface they happen to be growing out of. There's no benefit to the latter, while the former generally means you are growing towards the light. |
Why animals naturally know how and when to mate, where as we are educated or we learn about it from external sources? | We do know. It's just that our society has rules that deviate from natural instincts. That's what you get taught. |
Why is Gold so valuable and what are gold bars even used for? | Gold bars are just specifically a standardized and convenient way to store the stuff in bulk. Each gold bar weighs a precise amount and is identical, so it's easier to calculate the value. They are bigger than coins but not so big as they are hard to deal with , and the value is entirely in the metal itself: there's no... |
Why is it instinct to close our eyes when we get something in them? | The response to eye irritation is to try and flush it out with tears. This won't work if your eyes are open, they'll just pop out and slide right down your cheek. So you close them sumbitches to keep the tears in. Also stops any new source of irritation getting in, as a neat little bonus.Closing your eye makes your eye... |
How can the brain of a person who’s been paralyzed by a neck injury still make their body perform basic functions? | Define neck injury. I guess you mean quadriplegy, where the injury is below C4 and you can still breathe unaided. Basic functions are regulated by the autonomous nervous system, which is divided into the sympathetic nervous system and the parasympathetic nervous system . The sympathetic nervous system stems from the ce... |
Why is the body able to regrow the liver and not any other organs? | Technically speaking, it could be possible for humans to regenerate their hearts like some species .Newborn mice and newborn humans can somehow regenerate their own heart after a neonatal severe heart failure, not completely but enough to recover sufficiently. But somehow we lose as human this capacity very young, if I... |
How did early cartographers accurately map the shape of the continents? | They really didn't. Anything over what could be seen horizon to horizon or was very well populated and traversed was somewhat close . They simply lacked the perspective that flight would give them. |
What stars would we see during the day if we were able to see through the "light pollution" of the sun? | This is going to depend entirely on where in the world you live. Most 'stellarium' apps will have an AR mode that shows you what's there even with cloud cover/during the day. |
What is it about canine genetics that makes them able to be altered so much more dramatically and quickly than any other species? | Canines aren't altered more quickly than other species. The dramatic changes come from thousands or tens of thousands of generations of selective breeding, about five times what it took to turn aurochs into modern cattle.Now, my question back at you is what makes you think that they are able to be altered so much more ... |
How do private number plates on cars work in the USA? | First each state has its own rules so it varies from state to state. That leads to a situation like in Virginia which has a really high number of personalized plates per capita just because getting one is cheaper compared to most states. Beyond that it's pretty trivial. When you register the car and apply to get the pl... |
How does “dead” weight work? | Because when they're awake, they're more tense and so more of their weight is on the ground. When unconscious the muscles relax, naturally they'd collapse onto the ground. But instead you're holding them up, so you take that weight.Imagine lifting 150lbs on a regular barbell, the weight is evenly distributed, ridged, a... |
how are companies such as Amazon allowed to get away with horrendous work environments in the US | Because it's legal and their customers tolerate it. Don't like it? Don't buy from Amazon. |
Why do some cities have enough allotted phone numbers (based on area codes) for 10x their population? | Those area codes server the Houston *area *, not just within the city borders. You also have to consider cell phones, home phones, office phones, call centers, business lines, etc. Overall, there are more phone numbers used than there are people. You also have to have numbers available for pre-paid phones and other tem... |
why do singers lip-sync/use playback so much? | The vocals you hear on an album are mixed. Especially in genres like pop, the producer might add doubles or harmony lines, layering the singer's voice over and over to make it sound richer, stronger, and fuller. They might tweak individual notes and smooth out any rough edges to make the vocals sound better. They boost... |
What is a moving average, how is it different from an average, and why would it be used? | It's incredibly useful for any kind of performance metric. For any adaptive system , you don't care how they behaved a long time ago, you care how they're behaving right now. If you want to predict a swimmer's speed, you're going to average their last few competitions, and not include data from when they were a kid. |
How is conscience created? | It's complex and not very well understood. Certainly interactions with others in the formative years helps. It is said that rough play with a child that doesn't hurt the child will help a child learn the limits of what can be done to others without hurting someone. Children begin to understand around age 2 or 3 that if... |
How is operating the touch-screen-only interface of a Tesla Model 3 safe while driving, when operating a touch screen phone is not? | This is something I don't like about Tesla cars. There are a few things that I want to be able to control while looking at the road. Things like setting the heating or skipping a song. In my awesome late 90's car this is easy; I just reach forward and turn a knob or press a button. As far as I know, in a Tesla you'd ha... |
Why did the French Revolution fail and put Neopleon in power? | 1- France post-revolution was very unstable and a violent place. They needed a solution. 2- Even if we see Bonaparte as authoritarian figure and in a way a dictator that putted himself as the emperor, Napoleon was made from the revolution and believed in it's ideals. French people supported him because he wanted to con... |
How is it that Johnson & Johnson baby powder (talc-based) is being linked to asbestos-caused cancers, like mesothelioma? | Talc is mined from the earth and occurs naturally next to asbestos deposits. Asbestos fibers can become mixed with talc during mining and are and hard detect without specialized testing. JnJ had testing done and several times small amounts of asbestos was detected in their talc. JnJ simply ignored these unfavorable res... |
If electricity returns in a circuit, how does it ever actually get "used"? | It's the same as how Waterwheels can be turned at a waterfall, but we don't lose any water. The water didn't get used but rather the energy that was used was from the fact that it was flowing. Water can't power a Waterwheel once it's reached the ground and stopped flowing. Electricity is similar, we aren't using up ele... |
How does a computer (running a modern operating system) boot up? | A lot. Seriously. A lot. Too much for an ELI5 probably. Initially there will be some hardware level stuff and then it'll run the BIOS which is on a flashable ROM somewhere in your computer and the BIOS will load the first sector of whatever storage devices you have configured to be the boot devices and in the order you... |
What do the numbers on the dials on radiators mean? | When you have a playground, you need to open up a gate to let people in. If all gates are closed, no one can get in. That is when the dial is on zero, there are zero doors open. You want to let people in, so you open up a gate. There is a small flow of people if you open up one gate but you notice that there are not en... |
How do we know exoplanets outside of our solar system exist if they are trillions of miles away? | We basically point a really good camera at a star and measure how much light the star gives out. If the light drops, then there might be a planet orbiting it. We then use a bunch of statistics on it to see if there's a statistical likelihood of a planet existing orbiting that star. Imagine looking at a flashlight, with... |
/ Why do baby animals have different fur than adults do? | Newly born creatures have different needs than fully grown ones. Kittens don't go off hunting or running through bushes or grasses, so they don't really need tough and durable fur yet. Newly hatched birds don't go off immediately and start to fly, so they don't need flight-ready feathers yet. What do they need? Nice fl... |
Why in videos do some lights appear as flashing? | The lights actually flash - they turn on and off 50 or 60 times per second.Your eye can't notice that because of the eye's stiffness but camera can see that. Note: they don't actually turn on and off like they would when you use switch - they do it in a sine wave, so they are constantly diming and going back up |
Why do you sometimes wake up refreshed in the middle of the night after just a few hours and other times are still exhausted and groggy after a full night's sleep? | I'm not going to read the comments prior my reply to your post. It's got to be with damn sleep cycles. Whenever someone awakes me and I'm dreaming, I feel awful, angry and tired. So much frustration. Given you are into some serious cycle-swapping during the whole sleep thingy, I bet if you're awaken inbetween some spec... |
What makes us twitch when we are asleep? | The unconscious part of your brain, which directs your heart to pump and your lungs to breathe, also tells your body to move around. It helps relieve pressure on different nerves and blood vessels, e.g. when you fall asleep with your arm under your head. People who are paralysed and can't move their bodies around often... |
Moneyball movie for someone who isn't from The united states and doesnt know the teams at all but knows the rules of baseball. | weirdos" or "past their prime" but also *get on base* you can construct a team of players who don't cost very much BUT win games. Instead of spending millions and millions for superstars, you gather up a team of nobodies who can grind out run after run. |
Life insurance and how exactly it works | Do you own a home or have children? Not sure about where you live but in the UK you have to have life insurance to have mortgage In case of your death your house will get paid for.The bank doesn't care if your dead they want their money regardless.Before buying a house I never considered life insurance. Edit. My bad, I... |
How do steroids cure illnesses? | The bronchioles secrete excess mucous when inflammed. The anti-inflammatory properties of steroids reduce this. They do nothing to treat the infection that caused the imflammation, they only treat the symptoms. You don't always need to medications to fight the infection. Sometimes it's enough to treat the effects the i... |
Why do things like fatigue, stress and eye strain cause dark circles and/or bags under the eyes? | I'm really curious about this. If I don't eat the entire day, I'll get into a zombie-like state with dark circles. I suppose the blood vessels just dilate when stressed. I wish I knew why", 'Does this have to do with a "rate me" thread by any chance? |
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