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How do football players not get sick when they play sleeveless in really cold/wet weather? | The body heat thing doesn't seem far-fetched to me because I have experienced it. I like to ice skate, and if you exercise enough at very cold temperatures, you will not be cold. I can comfortably skate in a t-shirt. However, this is an anecdote, and thus of limited usefulness. [Here] is an explanation of how the body ... |
What is Front End and Back End Web Development? | Front end - stuff the end user sees. When you go on eBay and use the search bar to find the thing you want, that's front end. Back end - how it all works. When you type something into the search bar it sends information to a server that pulls the information you need, that's all back end. When you buy a thing on eBay, ... |
Was the catalyst for the YouTube revenue/clean content issue caused by the Wall Street Journal articles on YouTube? Do major papers hold this amount of power? | Regarding the Wall Street Journal, it's one of the most read papers in the US with a subscriber count of 2.4M, [according to wiki]. Additionally many businesspeople, including those at YT and Google and the companies that pulled ads from the Youtubers, read WSJ because it has a reputation of being *the* source of busin... |
Why doesn't a pistol shrimp's snap boil water? | Not enough energy to. It's like lighting a match in a snow storm and expecting it to melt everything. Sure, the match is hot, but theres a lot more cold than there is hot.I don't know how much credence i give to the "temperature of the sun" quote there, but the water does boil, in a way. The water undergoes cavitation,... |
How did people get water to drink in ancient Venice? | Venice has a complex system that catches rainwater putting it into cisterns that are then accessed by various city wells and fountainsThere were wells that tapped the aquifer under Venice. Draining this aquifer was one of the main causes of Venice sinking. All wells were banned in the 1960s I believe. |
Who funds the chocolate milk commercials on ESPN? | Lobby or industry groups mostly, basiclly the MPAA of the milk or egg businesses. According to this_URL_0_ The add is paid for by The Milk Processor Education Program aka MilkPEP. According to their website MilkPEP is funded by the nation's milk processors. The egg commercials were paid for by the American Egg Board, t... |
why can't some people wink? | Your facial muscles, including your eyelids, are controlled by the facial motor nucleus. This is a cluster of neurons in the brainstem. But it's not a uniform thing, it's split up into smaller parts. The upper half of your face gets sent mostly weak, bilateral signals. A lateral signal means that the signal is sent to ... |
Why do humans have a bellybutton? | Your belly button is where the umbilical cord connects when you're in the womb. That's what provides you with food and oxygen. It has no purpose as an adult, it's just a leftover. |
The ability to be vague in the "ingredients" list on certain foods | The FDA has very specific rules on labeling, as can be found [here] The rules specifically address 'spices\' and indicate they can be listed very generically, as "spices" or variations thereof. As for why they did it that way, one can only conjecture. Industry lobbying, for one, because spices may be secret, or may cha... |
The difference between transsexual, transgender, and hermaphrodite, options those people have for reproduction, and what it means to "Identify" as fe/male. | A hermaphrodite is a person with a rare condition that causes them to be born with fully functional male AND female parts. Today, it is usually the case that parents will make a choice and have the other parts surgically removed. Transgender has to do with gender identity, specifically, identifying as the opposite gend... |
Why do we find massages relaxing and soothing? | Massages stimulate a lot of nerve endings in ways that they typically aren't stimulated. It also increase blood flow in those areas which is good for you body. |
Why is a college degree now required for many jobs when some of those same jobs used to be operated by people with only a high school education? | Because there are far too many interested. Diploma is a way to reduce the people applying for a job plus the degree is a way to understand that they know something.I'm not sure what jobs you're referring to, but from a broad perspective, a college degree is less of a risk for an employer. I work in an organization wher... |
How and why do styluses work on touch screens? | There are two major types of touch screen, resistive and capacitive. Resistive touch screens work basically by having two layers of flexible plastic over the screen. When something pushes down on the top layer, the layers touch, and this is detected. Resistive touch screens are responsive to basically anything: fingers... |
How does laundering money through expenses work? | As a general rule, you can't. Laundering money requires that you inflate _revenues_ so that you can pretend your dirty money was earned through legitimate sources, thus "washing" it. Now, that said, you can't just inflate revenues forever. If you run a business and suddenly double revenue without _any_ increase in expe... |
Why do we often get so entertained just by sitting looking at a bonfire? | Fire is a powerful tool, and is/was one of mans most prized inventions. The dancing of the flames on the wood can be quite serene. The crackling creates a background filter to help you focus. ', "The universe invented fire, humans just harnessed it. Most modern societies don't teach this primitive but survivalist lesso... |
The difference between cisgender, transgender, and intersex | Cisgender is what most people are. Their physical sex, and gender identity are mostly in sync, so they feel 'normal' with themselves for the most part. Transgender -as can be assumed by the prefix 'trans' being the opposite of the prefix 'cis', is the exact opposite. Their physical sex does not match how their gender i... |
What causes the body to get addicted to a certain drug, and why does it form a reliance off of it? | Drugs affect many parts / processes of your body, but the addiction part is largely neurological. **Addiction Process:** User takes drug - > Brain gives big reward and starts positive association with the drug - > User takes drug - > Association increases - > Repeat After the user goes clean, this association remains. ... |
when you exhale, why is your breath warm with your mouth open & cool when your mouth is almost closed? | When your mouth is open wide you feel the air that has been warmed in your lungs. When it is barely open like blowing out a candle the air from your mouth is moving faster and pulls more of the cool surrounding air into the air stream, this combined with increased air speed makes it feel coolerThe answer lies in a phys... |
Why do our feet have arches? Wouldn't it be more advantageous to have your weight distributed over the entire surface of the foot? | The entire purpose of the arch is to act as a spring to help absorb the impact from walking. Walking puts a ton of stress on your bones and if you run, it's worse. Imagine driving a car without it's springs. Every bump would be slamming into the frame basically. Eventually, you'll wear things out much faster. Also, it ... |
Why does my nose run when I eat food with cayenne or similar pepper spices? | Chili peppers, used in spicy foods, contain capsaicin. Other spicy foods, such as horseradish and wasabi, contain allyl isothiocyanate. Both capsaicin and allyl isothiocyanate stimulate a reaction in your nervous system, causing your nose to run. Your nose runs when eating spicy foods because both capsaicin and allyl i... |
Why don't bugs adapt to not hit my windshield? | By percentage, so few bugs are killed in this way that it doesn't create much evolutionary pressure.I think the bugs hit your windshield because you are on the road, right? They are usually above the road because it is warmer than the surrounding area . Does that make sense? |
Why are the planets named after Roman Pagan gods? | The planets out as far as Saturn can be seen without a telescope. The Romans had names for them, and our civilization kept using those names even after the Romans were gone. Uranus and Neptune got their names to continue the pattern. Oh, and the moons of the planets are named for minor gods and heroes associated with M... |
Why does my stomach growl when I am hungry? What is going in inside and why does it make a sound? | They are called borborygmi - such a wonderful word .You have passageways throughout the entire GI system where the food is moving from one section to the next. Between the stomach and the small intestine, for example, is the pyloric canal which is the passageway through the pyloric sphincter muscle. Your anus has the s... |
Why does your nose run when you east spicy things? | Nasal irrigation is a way for the body to protect sensitive and vulnerable tissues in the sinuses. Spicy foods trigger a feeling of actual heat , even though it's not actually hot. The best way to cool spicy foods is with milk or some other dairy product. Fats in milk bind to the oily spice and carry it away, and sugar... |
What is happening under the hood my car that makes it "go" when I press the gas pedal? | Basically controlled explosions. Each car had a certain amount of cylinders that's what people mean when they say that. In each cylinder their is a piston connected to a shaft . Fuel and air are mixed into the cylinder and ignited by a spark plug. The explosion forces the piston downwards and turns the shaft. The shaft... |
Why does ice stick to your fingers when you're holding it? | Basically, the ice is so cold that it can freeze the thin layer of moisture on your hands. As the ice warms up, then it doesn't happen anymore. Your skin has a small bit of moisture on it. Fresh ice is usually below the freezing point meaning it has some "room" to absorb more energy before it becomes water. So, the ice... |
How come if there is an advertisement on TV, it's called a commercial, but anywhere else, they're just called ads/advertisements? | Commercials are ads too, they're just a specific type of ad that happens to have a specific name. Calling them advertisements wouldn't be incorrect. |
Why is it that battery powered wall clocks leave a stain after a period of time? | That's where the battery case was. When batteries are in use they generate a slight amount of heat. That mark is just a very very slight 'burn' of the paint where it was pressed against the wall. It's not dangerous, because it's a very low-grade burn.The clock motor generates a little heat and vibration, which over tim... |
In the cave paintings in France and Spain from 20,000 years ago, there are rinos, lions, gazelles, etc. Why did these animals go extinct in Europe but not in Africa? | Climate change dealt Europe an ice age -- it just became too cold for some of these animals. Human population density limited the amount of space for these animals to live, eat, and not be hunted by humans. |
What's the difference between college, community college and university in the US in terms of the credibility of one's degree? Do all of these even end with one getting a degree? | Community Colleges are 2 year colleges that offer trade certificates and Associates degrees. Sometimes, they'll cooperate with a state college or university in order to offer higher degrees in specific programs. These are run by the county or city and designed to offer a wide variety of education. Colleges are 4 year i... |
Hot air rises on earth but what happens to hot air on the space station? | There might be some movement due to the different densities of air creating different pressures, but it wouldn't move much compared to hot air on Earth. An interesting side effect of this is lighting a candle in zero-g. The flame itself doesn't rise into the shape we're accustomed to seeing. Instead it ends up making a... |
Why are state boundaries on the western side of the USA much cleaner/straighter than those on the east? | There was a lot of land to divide up, and very few people to worry about keeping communities together for. Thus, in the Eastern US you tend to get more natural boundaries such as ridges and rivers, things that might have naturally divided a territory into separate areas that people would spend most of their time on one... |
How do the major mail deliver services (FedEx, UPS) handle people who don't pay for the faster shipping? do they literally sit on the packages? | They ship it by truck, instead of by air. Much cheaper for them. If the truck's not full for a particular regional destination, then it doesn't go. So your package will sit in one hub until the truck is full enough to send to the hub near you. |
Why can't we just have synthetic teeth? | We do, but they have to be screwed in to your jawbone with titanium screws. Natural teeth are glued in place by a layer around the base of the tooth called the periodontal ligament. It acts as a cushion and can heal itself so it doesn't wear out. Tooth implants have no shock absorber or have shock absorbers which event... |
How do cuts work? | Your skin is made out of a bunch of molecules that are linked together. When something pushes hard enough the pushing force is greater than the strength of the links and it breaks. Now a blunt object spreads out the force on a bunch of different places, so all these places share the strength of their links, so it doesn... |
Why do senators and representatives rarely represent the state that they are born in? | Americans tend to move quite a bit. This puts us in the position of being able to choose where we want to run for office from. A politician may not have views that align exactly with their "home" state, and make a strategic determination to move to a location where they have better odds of winning.How many don't? The m... |
Why do balloons stop floating after a while, even though they still have helium? | Yes, the remaining helium still provides buoyancy, but there comes a tipping point where that buoyancy isn't enough any more to carry the weight of the balloon's casing.Sure, but the balloon has weight itself. As the helium decreases, eventually the weight of the helium and balloon combo is no longer less than the weig... |
How was it possible for us to view the moon landing when the astronauts hadn't returned to Earth yet? (those were the days of "film at 11") | For Apollo 11 it was sent by radio signal back to Earth which was picked up by receivers in Australia and then broadcast worldwide. A camera was attached to the lander to film it.It was video. News shows used the old 'FILM AT 11' for those not adjusted or familiar with the relatively new VIDEO technology then. Its like... |
Why does it seem as though as I grow older, time and life speeds up? | Dude I am 30 and still raving like mad!Bring your self together!Because theoraticly it DOES! Ever so slightly though. As you grow older, you also grow taller. This means the distance from your head to the center of the earth increases . This means the speed at which your head moves, is slightly faster as well. Due to s... |
Why are PC digital downloads cheaper than console digital downloads? | Console downloads are a closed market. You have exactly one source for your downloads. PC digital downloads have competition, so there are more market forces at play.My guess is that PC games have a higher *Elasticity of Demand*. There are way more games available for download on PC, thus users have more options which ... |
Why can you stream from Netflix/Hulu/HBOGo with no problem, but your laptop heats up and the video lags if you try to watch from the AMC/CBS/NBC website? | Netflix' player is based on HTML5, I can't say anything about the others. But I'm assuming that AMC, etc. have Flash-based players and Flash has terrible performance when it comes to video decoding. |
How are street numbers assigned? | Its based on a grid. If you ever look along the top and sides of a map there will be number indicating that certain areas go along with certain addresses. So when you look up a street you find roughly where the address is. Usually each city/county/township has their own way of deciding which addresses get assigned and ... |
Why do big game developers and publishers not listen to their community and continue making mistakes? | Because they still make money regardless of how many mistakes they make. Despite all the disappointment with those games, they still sold millions of copies.The community doesn't have a unified opinion. It's chaotic and depends on what subdemographic you ask. Then there's the argument that people do not necessarily kno... |
Why is cyber-bullying such a problem? Can't people just step away from their computers? | I imagine that for lots of people, social networking has become an integral part of their life. In fact, it is part of their social circle. I hang out with dudes over Teamspeak that I play games with. Sometimes we meet IRL and hang out, it is also great when you can drive to another country and have a place to sleep et... |
Where do cranes come from? | [A big crane is assembled using ground level, flexible length cranes that are mobile but can't carry as big a load as the main crane] |
Pornography censorship in Japan. | It comes from an old Japanese law that came from the Meiji Era where content "injurious to public morals" was forbidden. This law was influenced by Western Victorian morals. Over time the law was relaxed in other cultures but Japan was more conservative and kept the law around. The law was eventually reinterpreted to a... |
How are the costs of reality makeover tv shows like Home Improvement and Hoarders paid for and why? | Same way all TV shows work. People watch show because they enjoy the content. Then TV network shows adverts to those people. The advertisers pay the TV network who in turn pay the show creators who then have some more money so they can make more shows. There isn't a TV around that doesn't have costs and a budget. Wheth... |
How does a computer keep track of the date/time while unplugged from power and the internet? | Theres a flat battery on motherboards. You gotta change em like every 6 or 7 yearsThey also have a small digital clock which keeps running. Some small computers, such as Rasperry Pi, do not have this as it is relatively expensive. They can get the time on startup from internet servers, the so-called XNTP service which ... |
How does a Government body censor the internet of its people? | There are various ways. The most basic of which is simply manually removing the server from the internet . |
Why do neon signs have a buzzing noise to them? | I think the most likely culprit is the transformer for the neon sign. The transformer takes the 120V or 240V 60Hz from the outlet and steps it up to several kV. The way it works is by running current through a coil of wire to create a magnetic field, and then converting that field back to a current in a secondary coil ... |
Why does coiled wire serve as a good inductor? | When you have current running through a wire it induces a magnetic field. This magnetic field is circular and encircles the wire. If you point your right thumb in the direction of the current then your fingers are curled in the direction of the magnetic field. If you take a wire and coil it up then the magnetic field o... |
What is a "trigger" on Reddit, and is it a term used outside of Reddit? | When some people undergo severe psychological trauma, like rape victims or soldiers, they're left with something called PTSD. Sometimes, things that remind them of the traumatic event can give them a panic attack or other unpleasant things. In some online communities, it's considered polite to warn people if you might ... |
How do non profit companies make money? | This was explained a few days ago on reddit, so let me see if i can reguritate it. Non profit means the company isn't making profit. That still means they need qualified persons to fill their jobs. These people are paid, sometimes very competitively, to keep this organization afloat. What Non-Profit means is that the e... |
How does gut flora work and how can probiotics help? | Gut flora refer to the billions of bacteria that live in your intestines. They serve multiple purposes. 1. They help with digestion. E. Coli, for example, helps you by producing Vitamin K, which you cannot produce yourself. 2. They compete for space with bad, pathogenic bacteria. If bad bacteria can't find a space to c... |
What happens when you call into a talk radio station? | You call the station and someone answers, they ask you what you're planning to say. If they decide your story is acceptable they will usually put you through to a point where you say your thing and it's recorded. The recording will then be played on-air and the hosts will talk about it. If it's a conversation type show... |
Why do most dish sets come with mugs instead of drinking glasses? | Dishes are sold as a set so that the patterns all match. But they're mostly opaque while glasses are transparent or translucent. The glasses won't be able to match, so why bother selling them as a set? When you say mug, do you really mean cup? I haven't looked at dish sets recently, but I'd expect cups, not mugs. And c... |
What's happening, physically, when a computer starts overheating and becomes laggy? | Usually the CPU underclocking itself. In rare cases functions might fail or bits could change because the material wasnt designed to operate at those temperatures. When the CPU cant reduce the heat enough it will simply shut itself down. |
what exactly is a "resource based economy" and how would/could it work? | A resource based economy is one that gets most of its wealth from natural resources, like oil, lumber, or mining. Let's say a small island nation with 100 people discovers a massive copper deposit. Up until that point, they had a few tourists per year, but generally had to sustain themselves. Suddenly, 90 people are wo... |
What are the beads in hand sanitizers, and why do they float? | They're [microbeads:] > Microbeads are plastic microspheres that are widely used in cosmetics as exfoliating agents and personal care products such as toothpaste, as well as biomedical and health science research, microscopy techniques, fluid visualization and fluid flow analysis, and process troubleshooting.[1] They a... |
Why did our ancestors settle in areas with "uninhabitable" weather? | Sure, if you're in a place with nice weather, there's going to be more food but there's also going to be more competition for that food **and more predators**. Going to a harsher environment gives you more space to expand without other people trying to take your shit or kill you. Even today, you can see that in effect.... |
What is this G2A scandal everyone seems to be talking about? | Basically it is a marketplace where G2A the company themselves sell \'non-pirated\stolen keys\' or \'hacked credit card\' Game Keys to activate downloads with a decent discount. But as it is a marketplace other "shops" are allowed to sell CD keys. These CD keys can come from anywhere, hacked/stolen credit cards, stolen... |
Why does the body need carbon dioxide? | CO2 plays a vital role in maintaining the acid-base balance of your blood. The more CO2 in your blood, the more acidic it is. When you hyperventilate, you expel much of the CO2 in your blood, making it more alkaline. This is known as [respiratory alkalosis]. Respiratory alkalosis leads to light-headedness, tingling and... |
Why did the people of Toronto vote for Rob Ford? | His base is primarily in the suburban areas which felt under-represented by past candidates. He has a man-of-the-people image that he has worked hard to cultivate, in truth he is from the wealthy elite. Ford would personally return his constituents calls, small town style. His buffoonery is genuine. Despite the media c... |
easing yourself into hot/cold water to acclimate your body | Brains are cool and are able to adapt to any constant/repetitive stimulus such that you no longer realize you percieve it. . This might be why you stop feeling it, since your vrain is like "okay i get it, its hot. lets move on"I believe what your body is reacting to is the difference of temperature between your skin an... |
Where is all accepted scientific knowledge kept? | There is no single gatekeeper, who decides what is and is not "accepted scientific knowledge". Nor is science like mathematics, where a proof can be self-evidently correct. It depends on evidence, which may be inaccurately or unreliably collected or interpreted. As such, scientific knowledge is provisional, based on ev... |
How do songs/albums/mix tapes get leaked? | Usually they are leaked by someone who receives an advance copy, such as for review purposes. There have also been instances, although not as common, of leaks happening from the factory where they press the CDs. It could pretty much happen any time someone has advance access to the media in question. All they have to d... |
Why does staring at white paper in bright sun light cause your eyes to see everything in a different shade of color immediately afterwards? | In the simplest terms, when you stare at bright light, like the sun, or a flashbulb, the sensors in the back of your eyes that receive the light are hyper-excited, and it takes a while for them to "calm" back down again. Or, you could be like me and you don't see anything after staring at a white piece of paper in brig... |
Why do objects leaving the atmosphere not burn like they do when entering the atmosphere? | Orbiting is all about going fast, less about going high. When going into orbit you usually start by climbing mostly straight to get out of the thick atmosphere--that just slows you down with drag. Once you're mostly to orbital altitudes there's essentially no friction so it's possible to accelerate horizontally for a f... |
How does a turning a faucet change the temperature of water | There are two tubes running into your faucet. One straight from the mains, and the other from your water heater. When you open the faucet, the tap itself opens to allow water to flow out. When you turn the faucet, you are changing the amount of water coming through each of the pipes. All the way to the hot side opens o... |
if certain viruses need a living host to survive, why haven't they adapted to a point where they don't ultimately kill their host? | Most viruses probably are benign or even beneficial to the host, but two things can happen: 1) A virus can jump species and have new effects on the new species it didn't on the prior one 2) As long as it stay alive long enough to spread again it won't die off. It's at an evolutionary disadvantage compared to an infecti... |
how muscles get stronger. | Imagine a village that has a very valuable treasure in it and the villagers build a big wall around it to protect the treasure! Well lets say someone comes along and tears down the wall to get to the treasure. The villagers are really upset by this and after the wall is torn down they decide to build it back up even bi... |
Why did the Allies attack the most fortified place in Europe at Normandy rather than landing the bulk of their armies on a less dangerous coastline? | It wasn't the most fortified place in France at the time. That would be the Pas de Calais, the most obvious place to invade . The point of allied deception operations was to convince the OKW that the landings in Normandy were actually a feint, and that the real push would come with General Patton landing a First US Arm... |
High school males get a boner in class for absolutely no reason, why is this? | Use the search function. All healthy males get erections for no reason, randomly throughout the day, sometimes beginning even before puberty. No sexual thoughts or stimulation are required. We also randomly achieve erection during sleep, several times. No sexual thoughts, dreams, or fantasies are required. The human bo... |
What would the repercussions be IRL for someone who did what Jack Black did in "School of Rock"? | Trespassing at school. And most likely a couple dozen counts of kid napping for taking them off campus. |
What is a pocket veto? Why is it legal? | It's a legal maneuver. If congress passes a bill, the president has 10 days to decide to sign or veto. If he does nothing, then the bill automatically passes. However, if, during that 10 day period, congress adjourns, then if the president takes no action, the bill is automatically vetoed. This is the pocket veto. It's... |
Why do banks offer interest? What’s in it for them? | They get your money. Would you give money to a bank if you didn't get anything in return? The interest is a payment to you so you'll give them your money. |
how does garbage always smell the same when it is composed of innumerable different smelly objects? | Because it mostly only smells when there's rotting food waste in it and it is the same types of bacteria breaking it down and emitting the same types of by products that smell. You don't get that smell if it's just wood or paper or plastic or metal etc. |
How does CAPTCHA work? | CAPTCHA stands for Completely Automated Public Turing Test to Tell Computers and Humans Apart. They're also known as a type of Human Interaction Proof . You 've probably seen CAPTCHA tests on lots of websites. The most common form of CAPTCHA is an image of several distorted letters. They require you to type the correct... |
Why don't women face criminal charges for making false rape allegations against men? | This is not a complex technical question so this has been removed. Also: > Don't post just to express an opinion or argue a point of view. This is your fourth post removed from this sub in as many months, you seem to not get that ELI5 is not a place for you to express your opinions in the form of a question. So you can... |
Why does combination of smoking cigarette and drinking alcohol gives an overwhelming feeling of drunk-ness? | Because the nicotine gives you a headrush while the alcohol also similarily gives you that light headed euphoric feeling also then you now have nicotine and alcohol in your blood. Nicotine causes nausea and so does alcohol so you probably have a combined worsening nausea. But.. aww thats cute you still notice the feeli... |
Why do children like to draw so much? | I think everyone likes to draw. We have a natural-born desire to create and to express ourselves through visual art. Unfortunately many of us lose that desire due to laziness, lack of time, distractions, and/or discouragement from adults. Kids haven't experienced those pressures to the same degree yet. Personally, I th... |
Why do children's stomachs look bloated when they are malnourished? | It's called kwashiorkor, and is caused by a protein deficiency. In normal conditions, we have proteins floating around in the blood, which causes fluid to be retained due to osmotic forces. However, this protein needs to be replenished. When it isn't, fluids will pool in the soft tissues of the body, and will cause the... |
Where does skin allergy come from? | Allergy is a very complex proces even for specialist, but if explain it in general allergy is a defect of immune system when immune cells thinks that some safe substances are dangerous Immune cells are located almost everywhere in organism, also there a lot of them in skin, so if even allergen came thorough stomach or ... |
How do pilots know ahead of time when turbulance is going to occur? | Meteorological information can be used to predict turbulence with reasonable precision. Also, aircraft will report when encountering turbulence and air traffic control will relay that to other aircraft in the area.I think they can anticipate turbulence by looking at weather radar or radio messages from other aircraft t... |
Why do our arms tingle when we extend or reach them too far? | Chiropractic student here. What it sounds like you're saying is simply a stretch of the nerve. When the nerve is stretched, it can stimulate it, causing it to fire. The brain interprets that signal as a tingle along the nerve and the area of the arm it supplies. A similar case is when you hit your "funny bone". What yo... |
Why do Lithium Ion batteries lose their ability to maintain charge after many cycles of charging? | It is due to several things. The most important is physical. During charging/discharging lithium atoms move from one electrode to the other. The lithium goes into tiny pores in a sponge like electrode, but when this happens the sponge swells up. Repeated swelling and shrinking eventually causes cracking and fractures i... |
Why do unplugging things and plugging them back in cause them to start working again? | Basically software can have small errors in it. Or hardware can occasionally error. One common problem is memory leaks. But basically the longer something runs the more likely it will have minor errors. The longer it runs the more those errors accumulate. So turning it off, and turning it back on resets the system and ... |
What's going on in Philadelphia? Why are they shutting down so many schools and rail lines and so on? | The school system is broke. That's a gigantic mess unto itself. SEPTA isn't broke yet. The planned reduction in services would only happen in a worst-case scenario where the state doesn't give it enough future funding. It's problem is that more and more people are using it, but the state hasn't increased its funding ac... |
Why do some people say, 'on accident,' and others say, 'by accident'? | Someone said "on accident" by accident, never owned up to the mistake and it caught onI think some people say it because the opposite is "on purpose", so maybe some people think that "on accident" just makes senseBecause "by accident" is correct and because other people are dumbAs it turns out, this was part of a study... |
Static vs dynamic IP address, and how an IP address differs from a Mac address | Mac address is an identifying number hard coded onto the hardware by the manufacturer. Dynamic addresses are IP addresses automatically assigned and re-assigned by a DHCP server. Static addresses are IP addresses assigned by the person installing the system in the IP configuration options and do not change unless some ... |
if diseases like hiv are blood/vector borne, why don't humans and animals in western society contract it, via mosquitoes from one person to the next? | Mosquitos have two tubes they pierce you with - one for injecting saliva, and another for withdrawing blood. It's basically a one-way system - fluid goes out of the insect through the saliva tube, and in through the blood tube. This means that any viruses sucked up through the blood tube won't directly get injected int... |
Is Valves Steam a trusted system? | Yes. There is so much money coming in from Steam that it won't go down. It's got so many big companies selling through it. If Valve can no longer keep it up, they have said that they will release a key or software to unlock all your games from steam and remove the DRM. But they probably won't have to, since there are s... |
Can someone explain why Jesus is often one in the same as God, and why do people pray to both? | Christian doctrine describes [The Trinity]: - The Father - The Son - The Holy Spirit They are separate but one. While Jesus was distinct Jesus was, in their theology, literally God on Earth. So, praying to Jesus is the same as praying to God. They are the same entity. If this leads you to wonder about some other questi... |
Why does your stomach 'drop' when your in an elevator? | Because that's literally what happens. Your stomach has inertia, it wants to stay where it is. Your body suddenly starts moving up, it has to exert a force on your insides to get them to also move up. Same thing coming back down. |
The feeling that your being watched. Like if you don't know someone is in the room but feeling like someone else is there | One theory is that your brain can be very sensitive to slight changes in how sound bounces around the room. If someone enters the room, it will slightly change the dynamics of how the room reflects sound now that there is a person in the way. You brain may be able to pick up on that slight change of noise signature and... |
What is ETH Ethereum cryptocurrency, why it has value and what are "smart contracts"? | Ether is a cryptocurrency, similar to bitcoin.Ether has value as it is used to propel exchange of information on the Ethereum blockchain. As Ethereum is finding its way in to every single sector worldwide . Adoption of the technology is at a pivotal point. Ether will be used to fuel smart contracts which is one of the ... |
How does someone deal with professional degrees and other resume info when in the witness protection program? | Many of them cannot. They have to take menial jobs in somewhat related fields, or start from scratch. Licences and degrees for practicing in those fields are attached to a name. If you want to change your name and keep your licence you have to notify the licencing board of the switch. Protected witnesses cannot do that... |
The Senkaku islands - Japan/China tension. | The Senkaku Islands are claimed by Japan, China, and Taiwan. Officially, Japan annexed the islands in 1895 with the US taking them back in 1945 and giving them back to Japan in 1972. However, this same year is when China and Taiwan began to claim the islands as their own. Japan ended up giving the islands to a local ma... |
If home electronics in USA is working at 110V, why do we use 220V electric current in Europe. Isn't 110V more energy efficient? | Higher voltages are generally more efficient because they reduce the current needed to deliver a required number of watts, and lower current means less power lost to heat in the wires. That's why pylons carry thousands of volts rather than 110V or 220V. On the other hand, lower voltages are safer because a smaller curr... |
Nasa want to send a wind-powered robot to Jupiter. How does this work when there's no wind in space? | There's no wind in space, but there's wind in Jupiter's atmosphere, just like there's wind here on Earth. The probe will reach Jupiter the same way that other probes have been sent to planets before. |
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