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Why do soldiers in the Israeli Defense force look very Diverse? With blonde, dark haired, european, middle eastern etc looking people? | Israelis come from a pretty diverse set of ethnic backgroundsJews are very diverse genetically. Sephardic Jews have Mediterranean ancestry, while Ashkenazi Jews are Eastern European. Mizrahi Jews are Middle Eastern. |
How does the DeVos confirmation impact my kids that are in public schools? | Hardly at all. The Federal government is not in charge of your kid's school, that is handled by the local school board. No change in Sect of Ed will change that, and Ms. DeVos might make the federal government less important to your local school. Now, when your kids want to get a federally guaranteed student loan, Ms. ... |
Why do some people always wake up a few minutes before their alarm? | Over time your body develops natural rhythms. The body knows how much sleep it needs. If one goes to bed at roughly the same time and gets up at roughly the same time every day, you develop a sleep schedule that your body will continue to follow unless interrupted. You also have what's called a circadian clock/rhythm t... |
Why don't ISIS and Al-Qaeda like each other? | ISIS was originally al-Qaeda in Iraq. Throughout the years they often made decisions without al-Qaeda central's approval, such as declaring "statehood" with the formation of ISI , or engaged in activity contrary to al-Qaeda policy, such as attacks on Shias or bombing churches. However al-Qaeda continued to tolerate the... |
How come nuclear radiation from the countless nuclear weapons tests in the past hasn't (for the most part) caused widespread damage? | Yeah for the most part Radiation only travels so far before it becomes negligible. For the most part nuclear test sites are in the middle of no where. Russia tested in the middle of siberia which is thousands of miles from civilization. The U.S tested in the Nevada desert fairly far from any civilization. After a while... |
why are black olives in cans and green olives in jars? | I know the answer to this one! And it's very, very cool. First, you need to understand that green olives are picked *green*, as in, not ripe. Then they're brine cured for eight months. You can wait for them to ripen, and do the same thing to the resulting black olives, and that's what gives you the chewy, salty deli-st... |
How come highways dont get potholes with constant stress while regular streets do? | Generally it is because Highways / Motorways have a much deeper, thicker and stronger base than smaller roads. Therefore they do not respond to freeze-thaw action in the ground beneath them like smaller roads do. That's not to say they don't become damaged, they do, but the damage is more because of wear from above tha... |
Why don't we develop a new international language? | People have tried._URL_0_ Why it isn't popular is up for debate, but you identified two of the biggest reasons: laziness/stubbornness, and loss of culture.English is the international language. I am serious. I have been to countries in all the major continents, like China, Japan, France, Brazil, Indonesia etc. The only... |
why do stocks that don't pay dividends hold value? | They still represent ownership of the company. They have value because, hypothetically, if somebody ever wanted to buy the company, they'd have to buy up all the shares of the stock.investors who buy stocks that do not pay dividends prefer to see these companies reinvest their earnings to fund expansion and other proje... |
Why do Doctors work 24 hour shifts if they get the next 24 hours off? Why not two 12 hours shifts? | I don't know anyone that is on call for 24 hours at a time. The exact timing varies on the hospital, but the one I was at had 12 hour shifts. |
How is the hijab both a symbol of religious oppression and religious freedom/expression? | It does not have to be one or the other. A law requiring women to dress a certain way is oppressive. A woman having the choice to dress how she likes is by definition expression. When the law says someone must or cannot dress certain ways that's oppression. The hijab is just a scarf. The issue is laws. |
If atmospheric pressure exerts 1 ton of pressure on me, why can't I feel it? | > I am about .1 m^2 when standing. Maybe .3m^2 when lying down. You're mistaken there. What you need to measure if your body's *surface area*. The atmosphere presses in on you from every direction, not just from above. And the surface area of your skin doesn't change when you change positions. > I have this much pressu... |
How are "no refusal" holiday periods legal? | It's legal because there aren't any laws against it, and there are laws that allow it. Normally, a police officer who has reasonable suspicion of a drunk or impaired driver can request the suspect take a DUI test. If they refuse, he can get a warrant. Typically the warrant takes many hours to get - he has to go file pa... |
how does my browser translate the website URL into the website IP? | Q: "Is there a big database somewhere?" A: Yes there is a big database somewhere. There are many. The Webbrowser does not act alone in translating URL to IP. The process is involves also the underlying OS. The browser first sends the request to the OS. The OS checks its local store and then sends the request to a remot... |
HDI, Gini, GDP (PPP), and GDP (Per Capita) | GDP measures the total value of all goods and services produced in the country over a year. This is also equal to the total amount of income generated by producing those things. GDP per capita is the total value of all goods and services per person. It is the average income per person. PPP means purchasing power parity... |
How do power bricks work? | Assuming you mean [this kind of thing], they're basically converting wall power to a smoothed, regulated, low-voltage power source for the device to use to charge itself. If you mean [this kind of thing], then it iterally is just a battery plus some charging circuitry. |
how can it be that I see the moon during the day and at night? When does the other side of the world see it? | **Please read this entire message** --- Your submission has been removed for the following reason: ELI5 requires that you search before posting. There are absolutely no exceptions to this rule. Please see this [wiki entry] for more details. ---If you would like this removal reviewed, please read the [detailed rules] fi... |
Why is asking what someone makes considered such a personal question? | Because if it becomes widely known that you make significantly more than your social circle, you might have people asking you for money, people jealous of you, etc But if it becomes widely known that you make significantly *less* than your social circle, you might be looked down upon, and be viewed with pity, left out ... |
late night advertisements and tellyshooing. How do they make enough money? | Advertising is all about the number of viewers on a channel. After about 11pm the number of viewers drops off significantly. A super cheaply made infomercial can contract with a network to show their 1 hr infomercial with a few "commercial breaks" for a very low price. Remember the network would otherwise have to fill ... |
The whole Israel-Palestine-US relationship and why it is a major issue. | well, it is a big deal to he U.S in an entirely different way than it is to Israel and Palestine. basically, Palestinians are claiming they have been oppressed and treated like dirt, and the Israelis stole all of their land. While the Israelis, having won the land in wars, believe they are entitled to all of the land t... |
If you get shot why is it better for the bullet to go threw than to stay in the body? | If the bullet goes all the way through, you have a single, neat hole in your body for the surgeons to patch up. Unless the bullet managed to hit something important like an artery or major organ, you will likely survive any bullet wound which goes all the way through as long as you receive prompt medical attention and ... |
If continents drift a couple of inches each year, how are some ancient structures still aligned with certain stars/planets? | I'm not qualified at all to answer this question but we're talking inches in comparison to so many millions of miles to other planets and so unimaginably further to other stars on a giant rock that has an elliptical orbit anyway. Something tells me that those inches don't matter in the grand scheme of things. |
How do (probably illegal) free live streams of things like sports games hosted on various websites work? | The person doing the streaming has their tv hooked up to their computer, or possibly the computer is hooked directly to the cable line using a tv capture card . They use whatever software the streaming website requires to upload the video. The streaming website then provides a link to the person's video upload, which y... |
What is the difference between the radiation from electronics (e.g. Laptops and phones) and carcinogenic radiation? | The radiation concerned with electronic items is an electromagnetic wave, usually in the radio frequencies . These waves are near harmless, and we're constantly being bombarded by radio waves from space and from our modern lifestyle. There have been many studies into the dangers of prolonged cell phone use and each stu... |
Why do movies and TV shows usually use unique OS's on computers as opposed to common operating systems like Windows? | When displaying a screen in a movie or TV show, the director has a few goals: A) Don't piss off the advertisers. If the TV show might run ads for Apple products, or have Apple product placement elsewhere, it'd be a pretty bad idea to put a Windows OP on screen for free. B) Communicate information to the audience in suc... |
. What's so special about the Golden Gate Bridge? | It's really pretty. People really like how it looks, and it gets photographed a lot, especially in the fog. It's been used over and over again as an establishing shot to show that a movie or TV show is taking place in San Fransisco and is really a symbol of that city in the media now. It's famous for the same reasons t... |
What's the difference between nerds and geeks? | A geek is somebody obsessed with a hobby or an intellectual pursuit. It's usually used to refer to people with eccentric or dorky interests, but it would also be accurate to refer to somebody as a sports geek or gun geek, etc. A nerd is a subset of geek whose obsession results in a useful or marketable skill - computer... |
Do I have a better chance of hitting the lottery by playing the same numbers every time or playing random numbers every time? | Your chances of winning are the same either way, because each pick of winning numbers is independent. The only strategy to playing the lottery is in choosing numbers you *don't* think others picked, because although you can't modify your chances of winning you *can* modify your chances of a split payout by avoiding num... |
Why do kitchens always have sharpening rods for the knives and not other sharpening devices? | That's not a sharpening rod, it's a honing device. It's job is not to take off any material, but to straighten the edge back to true. If you properly hone a knife, it will last much longer between sharpenings. |
I've lit the same sized cigarette 20 times a day for the last 10 years... Why do I still have to look at it every time? | To make sure that you do not have it backwards and light the filter.You don't technically, it is habit. Due to the fact that an open flame is that close to your face, your natural intention is to keep an eye on it. |
the yelling, booing and cheering between the politicans inside the House of Commons. What are the rules? | Literally, because of tradition and etiquette. It is strictly prohibited to clap in the House of Commons, so they yell instead. It's been this way for centuries. |
why do pills contains so many "inactive ingredients"? What are they there for? | Any ingredient in a drug that does not produce a pharmacological effect is considered "inactive." These ingredients are put into medications for different reasons. They can be used to bind the pill together, preserve the active ingredients, prevent the pill from being digested too quickly, help the pill digest quicker,... |
Load balancing, how does it work? Any non-technical metaphors | You open a pizza shop and hire your nephew to take phone orders. For the first few weeks, you only get two or three calls per evening, so you get by with just one phone line and only your nephew assisting you. Then, someone posts a fantastic review of your place on reddit and the business explodes. Now you've got dozen... |
Will the ice in my driveway melt faster if I break it up? | Yes, breaking up the ice will make it melt faster. Warm air and the warm ground melts the surface of ice. A chunk of ice will eventually melt, but only one layer at a time, which can take a while. However, if you break up the ice, you expose more of it's surface. All the surfaces of all the pieces of the ice will melt ... |
What makes software compatibility between Mac or PC so difficult? | Let's say PC is like building with lego, Mac is like building with k'nex. Sure they're both plastic, but lego doesn't fit with k'nex. |
How can projector produce a black image. | It can't, black cannot be projected. It's the absence of light, so the black areas in a projected image are the areas not projected on. That's why you have to darken the room when using a projector. Black areas will only ever be as black as the surface you're projecting on under the ambient room brightness - this also ... |
Why do infants grasp every object put in their palms? | It is a reflex of the muscle palmaris longus. The insertion tendon of it can be seen on the anterior side of the forearm when trying to touch thumb to pinky. It is kind of a vestigial muscle from our chimpanzee-like ancestors that would have to grasp tightly to the branch or mother's fur for survival. Now it serves the... |
Is flying from Berlin to New York technically faster than flying from New York to Berlin? | I think just the opposite. The jet stream moves west to east, which gives flights in that direction tailwinds that allow the jet to move more quicklyScheduled flight times are typically shorter going from New York to Berlin because of the prevaling wind direction of the jet stream in the northern hemisphere. Nonstop ea... |
realistically, what are the odds of Yellow Stone National Park actually exploding and killing millions? | It's hard to say, but unless you intend to leave the country it's probably best not to worry about that one too much. However, one thing that has been nagging on the back of my mind is how there have been several studies that have linked fraking and small earth quakes. Weakening the structure of the plates kinda seems ... |
Why do some animals only live to be 15 years old vs. humans, or birds that can live to be 100? | Like so many things in biology, differences in traits between species can be explained by evolution. Imagine a typical [mouse]. It lives a rough life. All sorts of predators are trying to eat the poor animal. There is barely enough food. It is exposed to harsh environments. Unsurprisingly, most mice in the wild only li... |
Can we apply newton's laws of motion everywhere? | They don't, but you're unlikely to experience a situation where they won't work. As others have said, at high speeds relativity is an issue, and the underlying equations that represent Newton's laws become too simple to describe what's happening. However, a different and more likely scenario where Newton's laws would b... |
Why haven't we developed cars that run on hydrogen yet? | All of the above mentioned reasons, and if every problem with it were to go away and all that was left to just do it, it still may not even happen. Oil is one of the most valuable natural resources in the world, obviously. Those who control the oil controls basically any country that depends on it . There is a ton of p... |
Why is it that our bodies are 98 degrees Fahrenheit, but 80+ degrees outside is uncomfortable and temperatures of objects around 98 degrees can cause burns on skin? | Everyone else has explained about core temp and heat loss. I just want to say that 98 F is not hot enough to burn you. Hot tubs are set to a water temp between 100-102 F, and people literally lay in them for hours. 98 is not hot enough to burn skin.Our bodies are like car engines, they need to lose heat in order to sta... |
Why do humans have morbid curiosity? | I think it's for the same reason we have a curiosity for science and etc. We enjoy the unknown, and well, what's more unknown to us than life and death itself |
Insult scene from Hook (1991) | For reference, here's the scene:\r\rPeter Banning: I bet you don't even have a fourth grade reading level. \rRufio: Hemorrhoidal suck naval. \rPeter Banning: Or maybe a fifth grade reading level. \r[kids whistle and waves their hands around]. \rRufio: Boil dripping beef fart sniffing bubble butt. \rKids: Bangarang, Ruf... |
Why can you easily remove pieces of shell from cracked eggs with another piece of shell, but not with a fork, your fingers, etc? | Wait. You can easily remove pieces of shell from cracked eggs by using another piece of shell??', "Ok, well I was hoping someone who could give you the names of the proteins at work here would have stopped by. I had this post saved because I'm not sure which ones they are. But the basic idea is that protein does one th... |
Can Turtles/Tortoises 'feel' with their shells? | Turtle shells are made of keratin, similar to our fingernails. They don't have nerve endings on the outside of their shell, but they can still feel touches on their shell as it is connected to sensitive tissue. |
Why are thorium reactors better and why are we not funding it? | Pros of thorium: * produces less dangerous nuclear waste* is not useful in producing nuclear weapons* is more plentiful than uranium* we can design new reactors from the ground up with modern technology Cons: * only on the drawing board at this point, we don't know what other kinds of problems might arise* we have been... |
Why humans get relief when scratching a bug bite and why the feeling of the relief doesn't last for long? | Bugs like mosquitoes release an enzyme in their saliva that dulls pain receptors and allows them a chance they feed undetected. Your body releases histamines to attack the foreign enzymes and a wheal or bump due to excess histamine. When you scratch the nerves are stimulated with a stronger stimulus/signal than the his... |
When I get drunk, why do I look drunk? I mean, what physically happens? | Certainly depends on your intoxication level. Suffice to say, alcohol contributes to a temporary condition called ataxia - which is an impairment of your balance and motor coordination. It's likely a result of the alcohol slowing down or impairing the communication of a part of your brain called your "cerebellum". The ... |
How could NAFTA be terminated by a single country? | Either the US, Canada or Mexico could pull out of NAFTA by giving 6 months notice. By nature of scale of economies, if the US pulls out, NAFTA is basically dead. What happens after that would be anyones guess as prior to NAFTA, there were tariffs in place between the three countries. In all likelihood, NAFTA would be r... |
Why does driving with the air conditioning on decrease fuel economy? | The AC in your car does not use electricity. It uses a compressor driven by a belt attached to your engine. The amount of energy or 'work' required to drive the compressor is significant and causes the decrease in fuel economy.To simplify, a/c requires energy to run, that energy comes from the engine. In order for the ... |
Why can't everything be free? | Currency is simply the extension of trade/the barter system. Money allows use to expand our buying power. Without money, if you made product X and wanted service Y, you would have to hope that someone provided Y needed X, otherwise you are cut of luck. Your question suggests that people trade something for nothing. Wou... |
New Criticism in layman's terms. | Someone might say "How can Planet of the Apes be considered good by so many people? The resolution is terrible and the Apes faces don't move right!" To which a New Critic would respond "You're comparing it to modern standards, when you should be analyzing the movie based on its own merits." New Criticism basically seek... |
vodka is 40% alcohol. What does the remaining 60% taste like if separated from the alcohol? | I work for an ethanol manufacturer. We sell pure 190 and 200 proof into many different markets. There are some MAJOR vodka brands that purchase our 190 proof ethanol, add water, and sell it as their own. The remaining product in your vodka after removal of ethyl alcohol should be pure water. If you used shittier vodka ... |
Why does liquid rock and metal glow? Why doesn't water behave the same way? | Everything glows, depending on its temperature the higher the temperature, the higher the frequency of light emitted. Water, even boiling water, is not hot enough to emit light in frequencies our eyes can see.Liquid water is glowing but you can't see it. Anything with heat gives off infrared radiation. but liquid rock ... |
Why do dress shirts wrinkle and why do they form? | Just like the human skin, when fabrics and materials like leather get dehydrated they contract, and when the fabric eventually drys, it gets stuck in that position. The molecules have no lubrication of sorts to rub against each other and have more friction against each other. When you add water they loosen slide past e... |
Bright light shone at the back of the knees influences circadian rhythm. In what way?(Link in comments) | Your circadian rhythm is governed by a part of your brain called the suprachiasmatic nucleus, or SCN. It's a part of your thalamus located right above part of your optic nerve . The SCN gets input from your eyes about light levels. Since humans are diurnal, it uses this light input to regulate body processes alongside ... |
why didn't crystal Gale mangum get charged with anything in the Duke Lacrosse scandal? | Not entirely sure, but it's probably because 1) she was the nominal victim for a while, so it wouldn't have made sense to charge her until the team was exonerated, and 2) she later got brought up on murder charges, so she's already in prison, and guess nobody wanted to bother piling on. also, 3) she's considered mental... |
How does the United States government get intelligence about Al-Qaeda? | They don't disclose how they get intelligence, so we can only guess. They may be intercepting Al-Qaeda communications. They may be getting human intelligence reports from agents inside Al-Qaeda. They may be detecting patterns of movements or activities on communications channels which they interpret. It is secret. |
How do velocities near "light speed" add up? | They add up the same way near the speed of light that they do very far from the speed of light actually! It is just that, for velocities nowhere near the speed of light, the way they add up is *very* close to just simply adding them. But, if we have velocities u and v, then their sum s is s = / ) where c is the speed o... |
How was not allergic to Penicillin when I was a young kid, but at 25 I am? | Allergies can be somewhat variable. People can become allergic to certain things that they've had repeated and/or prolonged exposure to. Conversely, people can lose allergies. I was quite allergic to cut grass when I was younger, however, I asked for a scratch test during my last physical , and apparently I no longer h... |
Why is clean air and water a political argument in the US? | Its easier to convince people to smoke if they dont know its harmful. Same premise really. Its easier to run a business that relies on the environment, if people are unaware of the impact. |
Explain scientifically how 2 woman's periods can sync together if they are around each other? | There isn't much evidence that this actually happens beyond what would be expected by coincidence. Any two periodic events that aren't even multiples of each other will eventually sync up for a while. Then confirmation bias kicks in.If you want a scientific answer, you might want to try /r/askscience instead of /r/expl... |
On survival shows they sometimes eat poisonous spiders. How can something that has enough poison to kill you by biting be ingested without harm? | There are lots of things that if you were to inject them into your bloodstream you'd be harmed but that if you eat are easily destroyed by your stomach without doing notable or any harm. When a spider bites you it's straight to your blood. |
Why are all doctor's handwriting so messy, and how do pharmacists decipher what the prescriptions say? | Pharmacy side: If we aren't 100% sure, we call and ask. That being said, there are fairly standard dosing for most medications and standard anotations. For example, Z-paks are 99.999% of the time 2 tabs on day 1, 1 tab daily days 2-5. So even if the doc writes iiT PO OD D1, we know s/he meant QD instead of OD. |
The difference between the AT & T/DirecTV merger and the squashed Comcast/TWC merger | Comcast and twc merger would give them like 99% market share. AT & T and directv are not primarily even competitors. Direct's main competitors, Dish, and Comcast, twc will still be around. AT & T won't have a monopoly in the cell industry or the TV industry.The merger between Comcast and TWC would have resulted in the ... |
bermuda triangle. Is it really real? If it is, is it avoided by planes and ships? | The Bermuda Triangle is the area in a triangle formed by Florida, Bermuda and another location, often Puerto Rico. This area, of course, exists, although it is not normally used as a geographic term. There is no evidence that it is particularly more dangerous than the surrounding seasThe whole concept of the Bermuda Tr... |
What are the legitimate reasons as to why we don't have school through the internet? | I'm sure people will disagree with me but I think "going to school" when you're younger provides forced socialization, where you interact with people of your own age in a constructive environment, and impartial judgement of ability, where teachers tell you that you suck because you suck, rather than you're "trying hard... |
If our cells are always dying and being replaced how does a tattoo last forever? | The ink is injected in to the dermis layer which contains nerves, blood vessels, lymphatic and various other tissues. This layer is not only much more inner than the epiderms , it's also heavily inundated by immune cells ready to fight foreign infections. When the tattoo ink is injected into the dermis layer, immune ce... |
What exactly is that "library smell" that all libraries have? What exactly am I smelling? | Old books have a distinctive smell that can make any book lover’s heart melt. Matija Strlic of University College London described it to The Telegraph as “a combination of grassy notes with a tang of acids and a hint of vanilla over an underlying mustiness, this unmistakable smell is as much a part of the book as its c... |
Why do gay men in the US often have a different vocal inflection? | Some answers from _URL_0_ and other sources that I don't remember now. Firstly, it is mostly an English-language thing, but in foreign media that's less accepting of homosexuality, gay men will appear more 'feminine' to easily distinguish them. There's no specific biological reason, and it being cultural and habitual i... |
Why do you smell burnt toast before having a stroke? | Generally speaking, you don't. It's from a Canadian Heritage Minute commercial about the first brain surgery for epilepsy. |
Why are standardized tests timed? | Figuring things out quickly is part of scholastic aptitude, which is what the SAT is intended to measure. So no, I don't agree with you. It's not about measuring education per se. Edit to add - dealing with time pressure is also part of scholastic aptitude.With respect to math problems, some could be solved by brute fo... |
Why can't I keep a straight face? | It depends entirely on what you are trying to do. For example, if you are trying to perpetuate a lie to somebody your focus will be on the lie and that you are telling a **lie.** I think I may take it to extremes, I lie all the time to everybody and I use it to get what I want out of people. But, the way that it works ... |
What makes a cheaper processor (CPU) cheaper to manufacture if they are manufactured on the same silicon using the same processes? | High end processors have more cores and more on-board cache. So there is more silicon to use and, more importantly, more to go wrong so there are more defective ones made |
What is the space time continuum? | Imagine a completely empty square room. One corner has a black dot in it, just so you can distinguish it from the other corners, and then the 3 walls that meet at that dot are colored red, yellow, and blue. Now you can place a ball *anywhere* in the room, and then measure it "x-feet from the red wall, y-feet from the b... |
How to simplify square roots, such as √99 into 3√11? I just can't understand this concept. | okay! so basically you divide while it's still inside the square root. so √99 = √=•. √9=3. so √99=3•√11=3√11.To bring numbers outside of the root sign, they have to be a square. Then when you bring it outside, you take the root of it. Think of √99 = √ = √ *√ = 3√11 Factor out any squares inside the root, then you can r... |
how is the universe expanding in all directions from all points? | Think about a balloon. When you inflate it, it expands at all points on the rubber not just from one point. If you draw a few dots on it, it's a bit easier to visualise from A < - > B < - > C to A < - - - > B < - - - > C |
Why do Scandanavian women have last names like "Thorisdottir or Brynjarsdottir", but men have names that end with "Sen or Son". | Your last name is your father's first name plus "son" or "dottir" as might be appropriate. And yes, this does make tracing lineage beyond a generation or two more difficult. So Anders Thorbjornsen and Annie Thorisdottir probably aren't siblings , but Anders Thorbjornsen and Annie Thorbjornsdottir would likely be siblin... |
Why is math in America not all taught in the same class? | It's important to realize that classes work very differently in the British/Singapore GCSE system and in the American system. In the GCSE system, a class is basically one subject that you study for 2 years continuously. The topics will be taught in a progressive manner; you don't get to skip around. Basically, everyone... |
How can water be so slippery, and yet such a terrible lubricant? | Water is a great lubricant, except for it's low boiling point. That's why it's so effective at making your car slip off the road. Tires are specially designed to minimize it's lubricating effects, but they often fail. To adapt to this "problem" human skin swells and gets sticky when wet, the "pruney" effect from too lo... |
How did Jack become a nickname for John? | > The name Jack dates back to about 1,200 and was originally used as a generic name for peasants. Over time, Jack worked his way into words such as lumberjack and steeplejack. Even jackass, the commonly used term for a donkey, retains its generic essence in the word Jack. Of course, John was once used as a generic name... |
how am I cold in Florida at 60 degrees but warm in Pennsylvania.. | An atmosphere which has a higher density of water - and has been cooled, will require more energy in order to return it to it's starting temperature, compared to an atmosphere with lower density of water. In this scenario, you are the heat source, and will therefore be more heavily taxed in the more humid environment e... |
Why is it extremely hard to draw circles with my left hand, while simultaneously draw squares with my right hand? | I imagine it's because you're putting your mind to it. There are piano players who can play a really complicated song on the piano and also maintain a conversation because they aren't necessarily realizing they are actually playing the piano. Try to draw a six with your hand AND maintain drawing a circle with your foot... |
If swelling is the body's natural response to some injuries, why do doctors generally recommend doing things to reduce swelling? Isn't the swelling response there for a reason? | [Recent relevant SciShow]. Sometimes your body goes too far and the swelling becomes more harmful than helpful as too much blood attempts to rush into the injured area to bring resources, and as a result it gets clogged up and at the very least is no longer being helpful. Ice reduces the swelling, allowing the fresh bl... |
If a cast of a vinyl album (say, wood glue spread in a thin layer) were placed on a turntable, what would it sound like? | The casting would be the inverse of the record. Instead of a groove, it would have a ridge and would not play in a standard record player. So you'd need to make a second mold off the wood glue copy. Which is pretty much the process of how a master is made in the first place. Plus wood glue is too fragile, and the needl... |
How do trains (metal wheels on metal tracks) climb hills? | I would imagine that it is a combination of the train's weight and the grade of the track. I am sure that when the railroads were built, the engineers in charge of the construction were aware of the metal-on-metal issue and simply made certain to never build tracks at a steep enough angle for slippage to become a probl... |
Where does the worm in the tequila bottle come from and what does it mean? | I was told it was used to test the tequila. If the worm didn't die by the time it sank to the bottom then the tequila was a bad batch. You might think this is bullshit but we know that if this is upvoted enough it has to be true. |
Why is Google Fiber so cheap? | They are losing money. It's a loss-leader for a larger strategy. In the long term Google just wants people to have better connections to allow the delivery of other products and services. There isn't much belief that in the long run they are that interested in the bandwidth selling game - they are just trying to move t... |
Is there anything stopping Australia from having good internet? If so, what? | Distance. To have good internet younneed hard cables run from the Aussie hub to other continents. Satelite is going to be slower and less reliable. For Australia, this means transoceanic cables need to be run to another landmass, probably Asia. This is doable, but expensive, and as Australia's population is only ~23 mi... |
Why does my computer need a 15 pin VGA port to connect to another screen, while my DVD player only needs the two contacts of an RCA cable? | VGA doesn't contain any audio so for the purposes of this question we can ignore the red and white cables which are used for stereo sound. The VGA plug allows for separate red, blue and green signals whereas the yellow RCA connector is used for composite video. Composite video squishes all the information of the pictur... |
Do animals such as cats and dogs have a predominant "hand/paw"? | Yes. A predominant limb has been confirmed to most mammals.Curiously, their frequency rate is aproximately 50% righties and 50% lefties, compared to the 90% righties 10% lefties in humans', "I've noticed that my dog will always raise her front right paw whenever she's walking and stops, or when she's holding herself up... |
Why is Evian water so expensive compared to others. Water is water isn't it? | Spell it backwards, that is where your answer lies.Evian is imported from France - this explains the high cost. It's bottled from a one particular source that is known for its mineral content. The cost is understandable and somewhat justified. Why there's any sort of demand that's just weird to me. |
What is the smell of static on old tv's? | Do you get a similar smell from photocopiers/laser printers? Some electrical equipment can generate ozone to the levels where you'll detect it by nose.. I've never heard of a TV doing it specifically, but there are some moderate to high voltages in the cathode ray tube of older style TVs |
Why is the registered mark required on every photo/printing of that brand/image, even if it is clearly known to be registered? | As far as I know, the ® mark is not legally required; it merely indicates that you [a] claim ownership of the brand/image, [b] have officially registered the brand/image, and [c] intend to take legal action against anyone who uses the brand/mark without permission. If a brand/image is not officially registered, but you... |
How do electronic devices keep time even when they are turned off? | They have a separate battery just for that purposeThey use a quartz clock, which is tiny and incredibly cheap, yet keeps good time basically forever using almost no power. A button battery is enough for years of running.Without knowing the device I can't give an exact answer, but the 2 most common ones are 1) Some devi... |
How did horses not become extinct, when this much care is needs to be done to keep their hooves healthy/intact. | A horse in the wild has three major advantages over a domestic horse: 1. Wild horses don't have to carry or pull anything. Imagine how sore your feet would be if you had to carry a person or pull a cart for a long period of time.2. Wild horses are running on dirt and grass, not stone and pavement. The softer ground mak... |
Why does it seem like the former Axis members are well known for their cars? | For Japan specifically, it's because that's one of the industries the US targeted when they were directing Japanese business how to rebuild and revamp their processes. It pretty much all can be attributed to a single operations/business guy the US sent there named Edwards Deming, . Japanese industry used to be trash. D... |
what happens to the water used to make concrete? | Concrete setting is a complicated process and depends on the materials used. But part of the process is the hydration of the ingredients. The water actually becomes part of the ingredients. The water remains but is part of the chemical components. Concrete is also produced which will set under water. The Romans underst... |
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