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Why runway (for aeroplane) has 2 lanes? | The dashes aren't meant to separate a runway into two lanes, but rather they're used as a visual indicator to line up the airplane into the center of the runway as it lands or takes off.Are you sure they're "lanes" rather than just a marking for where the plane is supposed to line up with for take off? Every plane I 'v... |
Why does a nose bleed way more than a cut or scrape? | Look at how many blood vessels are [around your nose] as to compared to the ones [around your limbs]. . So you have more vessels = more blood in your nose and head area as compared to other locations on your body. |
The origins of the universe | The short answer is that we don't know. There's nothing we can use as evidence of a before-the-big-bang period to say "oh, see? That's what happened." And making that kind of conjecture without any supporting evidence is not the realm of science. Here's one I do like, however. If you're a super genius, and you do all t... |
How does banning software patents in New Zealand work? How will this affect the rest of the world? | Each country has their own patent office. In order to protect your product in a particular country, you need a patent from that country's patent office . For example, you cannot enforce your U.S. patent in Germany. New Zealand banning software patents means you cannot get a patent on software in New Zealand. You can st... |
How do we as humans with no air filters, have no problem with dusty air while most air conditioners get dirty? | Snot, boogers, nose hair, ear hair, earwax, tears, ect all defenses against things from getting inside of us.Your nose has nose hairs that keep out the dust. Your lungs and throat have mucus, which capture the dust that gets in. They also have cilia, which use a rhythmic rowing pattern to beat the dust up your throat a... |
If it's possible to build up a sleep debt, is it possible to build up a "sleep credit"? If not, why not? | We aren't really sure why, but it doesn't seem that something like that can be done. Think about it like your bladder; you can build up a need to urinate, but you cannot urinate so much that your bladder is more than empty. |
for what the wire connections, often isolated with rubber, between railings are? | Likely a bond wire to prevent galvanic corrosion which occurs when dissimilar metals are in contact. Also to ground the railing for lightning protection. |
What's the difference between a unit that is divided by a second (like velocity m/s) and a unit multiplied by a second (like Coulombs A*s)? | When it's divided by seconds then it like saying "per second" - it's a rate. When it's multiplied by seconds then it's dependent on how long it has been going on for - it's an amount of forceA unit multiplied by a second is "for a second" rather than "per second" when dividing. If a current of 1 amp flows for 1 second ... |
How do energy drinks like Red Bull affect the body? | A red bull is the same as a cold cup of coffee . Your body processes the caffeine slower. Otherwise there are no benefits in the drink. There is a very well detailed breakdown of what it does . _URL_0_ And this. _URL_1_The main active ingredient of these drinks is caffeine, which has an effect on some body systems. For... |
Why do you hear a rumbling when yawning? | When you yawn you tighten your canal muscles, which move the blood vessels to a position where the noise inside those blood vessels can be conducted into the inner ear producing that particular sound. |
How can the NFL own the phrase "Super Bowl" and restrict others from saying it? | The phrase "Superbowl" is "trademarked". When you create a name or term for something unique you can trademark it. Then anyone who wishes to use that name or term in a commercial context must pay the owner of the trademark. This happens all of the time. "Big mac" burgers for example by McDonald's. Same with the "Whoppe... |
What is the difference between an IgG and IgE antibody? | IgEs are secreted by plasma cells and bind to receptors on Mast cells with the Fc portion. IgEs are thought to be primarily used for defense against parasites. Immunoglobulins are distinguished by different protein sequences so you could use a western blot to differentiate. |
How are languages and words formed? | Nobody knows. That's it: nobody has the faintest idea. There are hypotheses, conjectures and theories, but nothing that could actually be tested. We know how languages evolve over time. We know, for example, that the modern English word "beech" came from Old English "bece", which is thought to come from a Proto-Germani... |
The Vedas, and what they meant for indian civilization, and what they done for us today. | The Vedas are very, very old religious writings, and some people think they are the oldest in the world. They 've been important to a lot of people for a long time, which is why people kept copying these texts over and over to preserve them. The Vedas include songs, poems, stories about gods, and religious instructions... |
Why members of the military wear their uniforms while off duty and in public | There are rules for enlisted and officers, about wearing uniforms on and off duty. The rules specify what type of uniform maybe worn, and where. For example the US Navy has dress uniform, service uniforms, working uniforms and coveralls I won't try to recite the rules, as a civilian, I'm sure I'd make a mess trying to ... |
What is evangelical Christianity? | One of the two primary belief systems of Christianity. Evangelicals have a personal religion. Jesus isn't just the Messiah, he's their *friend.* Prayers to God aren't a reaffirmation of faith, they're personal conversations with a deity. It's about **feelings.** Liturgicals have a theological religion. They don't neces... |
How do these Twitter accounts (and not very good content) with less than 200 tweets get over 10K followers. | It's a combination of both. Buying followers is easy and not that expensive. And a lot of them just follow everyone they can, wait for the follow backs and then unfollow either everyone or anyone that doesnt follow back. |
Why is the background really dark in extreme high fps slowmo videos? And how does zooming in help make the video slower? | If using a high-speed camera to create slow motion, since the frames are taking much faster than standard cameras, each frame receives less light due to the short shutter speed. The nicer high-speed cameras have large sensor arrays to compensate, but the fundamental problem is still there. To my knowledge, zooming in d... |
During the Great Depression, 70% of the country was employed. Who kept their jobs, exactly? | Those with skills that were still demanded by the economy at that time kept their jobs . Agriculture was one: no matter how bad things got, food was still in demand. |
Interest rates in the eurozone | The interest rate is common to all the countries which use the Euro, because the interest rate is a function of the amount of that currency out there. Interest rates aren't set by the central bank in the sense of "The interest rate shall be 3%" and it is then dictated that all banks must charge a rate of 3% . Instead, ... |
what is the point of having various computer languages and how are they different from each other? | This explanation can get very technical very fast, so I'll use the analogy of a [cars]. Yes, for simple tasks any car will do, but certain cars come with certain features that make them more desirable. Sometimes code needs to be robust . You don't want a language that is very finicky in this case. You want one that's m... |
what is the trick to spinning a basketball on your finger? It feels impossible. | If you spin it fast enough, the ugh, centripetal I think? forces will stabelise it. What's happening is the ball is pulling in every sideways direction at once on one axis, so it stays stable on the other axis. The trick is to get the initial spin fast enough. Keep practising! |
If a plane is forced to land on ocean, are there good chances for survivors? | If a plane is forced to land, then yes things are already quite good considering the circumstances. Passenger Planes can glide for a long time, and they have plenty of communication abilities to reach out for help before they even touch water. The entire plane will have plenty of time to get there needed equipment out ... |
How is your stomach able to make noise, and why does it do so? | That's air and digestive gases, like methane, moving through your intestines.Your stomach is always making noise, having food in your system dampens the noise, having less food results in less dampening. |
why is facial hair much more coarse than head hair? | That's not accurate. The hair on your face, and even in in private areas is actually structurally different from the hair of your head. Evolutionary speaking, the hair those areas are meant to keep foreign derbies out of the openings to the body so the strands needed to be larger to offer better coverage since humans o... |
What's the difference between advertised Internet speed and actual bandwidth? | The advertised speed is 16 mega*bits* per second. Eight bits = one byte, so your 1.7 mega*byte* download speed is close enough to the advertised one . By convention, capitalised MB/KB/GB refers to bytes, whereas lowercase refers to bits1.7 M**B**/s is pretty close to 16 M**b**ps. 1 byte equals 8 bits . 16Mbps is 2MB/s.... |
How do spacecraft that travel great distances in space keep from being destroyed by debris? | Two things. 1. Space is really big. Like, so very big that all those billions of little meteors and asteroids are still thousands of miles apart. Space ships just don't encounter them. 2. In Earth orbit, we have many little things mapped and know where they are and where they are going. If one is at risk of hitting a s... |
Why do some websites lock you in when you enter them? | A lot of times they don't mean to do this, it's a consequence of poor design. Basically, when you hit _URL_0_ it might direct you to _URL_0_/welcome.html. So, the first page you hit is simply a redirect to the page you actually see. When you hit back it just loads up the first page which immediately directs you back to... |
If energy cannot be created or destroyed, then what is potential energy? | > its energy is not gone, it simply is transferred to heat, sound, etc, correct? Correct! > Now assuming I'm not confused about any of this, when that same ball starts rolling from the top of a hill and gathers momentum because of its potential energy, how is energy not being created? Energy is not being created becaus... |
Why did America fight the Viet Cong, why were they considered bad? | The Viet Cong were communist. This is during the cold war where both Russia and the US were battling for world power using other countries as chess pieces. There was a belief in the US that if countries started becoming communist there would be a domino affect that more and more would do so. Letting 1 country turn comm... |
Why can't the pancreas be trained like a muscle? | hgih sugar intake damages it, sort of like how training your liver to process 2 bottles of vodka a day ends up wrecking it.Muscle tissue is special in that when damaged, it grows back stronger than before. This is an evolved ability. Organ tissue doesn't work this way. It always works as well as it can; any damage is e... |
Why does my breath stink in the morning even though I brushed/flossed/mouth washed before i went to bed? | At night your mouth doesn't produce saliva. Saliva helps to reduce the amount of bacteria in your mouth. But when your mouth is dry at night, bacteria multiplies because there isn't much saliva to control it. When you brush your teeth before going to sleep it doesn't get rid of all the bacteria. Bacteria is everywhere ... |
if america "forgot" over a billion dollars in taxes, where does that money go? | What that means is that taxpayers paid about a billion dollars more than they had to by not taking advantage of all the tax deductions and credits available to them. So, as a result, the government has that money.They make it sound like a lot more money than it really is. There's about 300M Americans. Let's assume that... |
It's 40°F/4.4°C and snowing right now. How is it not raining instead since it's well above freezing? | This can occur when there is a colder layer of air just above the warm one. As the snow falls through the thin warm layer it doesn't have time to melt. |
How .999 repeating = 1? | .999 repeating to infinity is equivalent to 1. Decimals are not an approximation, they are another way to state a number. 1/3 = .333 repeating to infinity. That is a logically and mathematically true statement. 1/3*3 =1 1/3*3 = .333 repeating * 3 = .999 repeating = 1 Infinity isn't an easy concept to grasp, but however... |
Why are the most notorious UFO photos from the early 1900's? | Now that everyone has high powered camers in their pocket, if someone were to claim they'd caught a flying saucer on camera, the immediate question would be where are the 15 other people who should have seen the same thing and taped it. |
How exactly does one become the leader of a major drug cartel? | Get born into the right social set, which is to say, you have a shot at being a trusted member. Then do good and make friends on your way up. Have enough of your friends survive and acknowledge you as the leader of your little clique that, when you make a try, you don't get instantly killed by the people who try you ou... |
Why aren't police procedures / policy voted on by the people? | In the US, we have a *representative democracy*. This means that we vote for people and those people make the laws. We don't directly vote on most laws that affect us, why would we treat police procedures any differently? Get off the internet. Go outside & walk around. How many people do you know that actually get thei... |
The stock market, how it works, strategies, all that? No matter how many stock market for dummies I read, it still makes zero sense on how anyone makes money. | You spend money investing in 'shares' of a company; i.e, you own a very very small percentage of whatever company you have purchased shares in. Any company that you can purchase shares in has a share price that is determined by the estimted overall worth of the company divided by the number of existing shares. For exmp... |
Why is a reflection in a mirror that's right in front of you just as blurry without glasses on as if you were really looking at the same thing far away without the mirror? | A mirror preserves angles as the light is reflected, so the light reaching your eyes is just the same as if object was behind the mirror [like this]. If your eye couldn't focus the light coming from a distant object, then it can't focus the light reflecting off the mirror either.In mirrors objects are seen at an "appar... |
What's the ringing in my ears when everything is silent? | It sounds like you're describing tinnitus. Yes, almost everyone experiences it at some point. For some, it's transient and not bothersome, but for others it can be constant and quite intrusive. It can take several forms, such as a single high pitched frequency, chirping similar to cricket noises, or even be pulsatile. ... |
Is eating organic really worth it? I hear people say you can just wash your produce and then other people say pesticides are absorbed in the soil. What are the facts? | This is one of those [All I know is my Gut says Maybe] things. First of all Organic Food definitely taste better if the person know it's organic or if the person thinks it's Organic when it's not. This is apparently in many scientific test and show how or mind changes flavours. In blind tests it is less obvious. Very f... |
Why it's impossible to cry in space? | You can cry in space, however the tears will not fall off, they will instead just stick to your eyes instead of falling down due to the lack of gravitational forces. _URL_0_ |
why kids love spinning rides but they make adults neauseas? | Your body has many senses , which all of us know sight , hearing, touch , smell, and taste. There are more though. The sense that is important in this situation is your vestibular system, which tells your body if its upright, or sideways, etc. The vestibular system is inside your ears, and you use it for balance purpos... |
Why does having both eyes open merge the images created from both, but having one eye closed doesn't merge the other with darkness? | Your brain does a huge amount of tweaking when it comes to your eyes and what you see. The important part is that your brain processes the inputs from both of your eyes into one image rather than two. When your eyes are closed, the amount of light that falls on your retinas is substantially less than if your eyes were ... |
If white light is the reflection of all the colours, why don't I get white when I mix red, blue and yellow paint? | Pigments make colors by stopping light that isn't the color intended to reflect, which is what you see. So mixing them together blocks almost all the light so you get brown or black.Pigments absorb the color. Adding more pigments means less color gets reflected |
Is sleeping 8 hours at night the same as sleeping 6 but then having a 2 hour nap? Why or why not? | Sleep cycle varies so you can't really set a magic number basically between 1-2hrs. I've heard the suggestion on naps that they should either be short enough to avoid entering deep sleep or long enough to ensure you get a full cycle . The former helps with alertness, but doesn't reduce the amount of sleep you need late... |
Why is the ocean blue and not clear? | Because water is blue, and not clear. But it's so very mildly blue that it takes large depths of water for the color to become apparent. It's kind of similar to how you can see just fine for a few inches when its foggy, but the fog becomes apparent when looking dozens of feet away. **Edit:** For those downvoting me, he... |
The difference between 1080i and 1080p | They're names for different screen resolutions, with the number indicating the number of horizontal scan lines, i.e. 1920 x 1080, 1280 x 720, 640 x 480, etc. The i and p mean interlaced and progressive, respectively. What this means is that with 1080i, every other horizontal line is drawn, thus saving computation time ... |
What causes lightning and thunder? | Imagine that little static shock when your finger touches a doorknob, but instead of your finger, it's a cloud, instead of a doorknob, it's the ground, and instead of a little click sound, you hear a huge clap. |
If we finally do solve hunger, cure cancer, get natural disasters to the point of a low death toll, etc. won't Earth quickly become very over populated? | Probably not. Countries with the highest standards of living already have negative population growth. In general for humans the worse the conditions the higher population growth gets. Japan and scandinavian countries and stuff like that where everyone has ultra high standards of living don't even have enough people to ... |
What is reverse racism and how does/doesn't it exist? | "Reverse racism" doesn't exist because it is just normal racism. Some people have tried to define racism as only applying to those who have the power to enforce it upon others, but that is more an attempt to justify their own racial prejudice.It's a somewhat controversial term describing racism of minorities against th... |
In Shawshank would Andy have survived the pipe crawl in real life? | I don't really see why not. The toxins in that would be very minimal, as I assume there's no chemical waste being dumped in that prison. It would mostly be poo, right? Heck, you could eat poo and survive just fine. |
Why does flash memory so small that it can fit in my iPhone cost the same price or less than a 2.5" SSD for a computer? | SSDs are designed for speed. Flash memory is designed to be large in capacity and small in size -- sacrificing speed to get there. |
why am I weak in the morning? | > There are chemicals that paralyze your muscles while you sleep, so you don't thrash around. So if they dont wear off quickly, you may still have trouble moving properly. [Top comment from a similar thread] |
Why do obese people generally wake up sore? | It’s difficult to move around in bed when your that size so you end up staying in one position and all the weight ads pressure to the body parts making contact to the bed. |
Why do gold and copper have such distinct colours compared to the rest of the transition metals? | The simplest explanation seems to be that some electrons are traveling so fast because of the way and order the orbitals are occupied that special relativity causes some certain electrons to tend to accept lower frequencies, and since they are usually in the ultraviolet range they start absorbing more blue which gives ... |
Japan is facing deflation problem. Why won't they just print more money to solve it? | Deflation and inflation are not predictable enough for short-term solutions. If this trend is merely a passing concern which is indicative of a greater problem of the instability of the marketplace, then printing more money will only make it worse.Because that won't change the overall trend in value, merely the digits ... |
why do American football players wear armour, but rugby players don't? | the tackling is a lot different in the two sports, if you tried the tackling in American Football without the pads and helmets youd do some serious injury to yourself, whereas in rugby there is set techniques and strict rules surrounding how you tackle so, if done right, you wont need pads. But still football players a... |
What is difference in coffee roasts such as medium and light? | There's actually an incredible amount of science that goes into coffee believe it or not. Light vs dark is the same concept as cooking a steak, you can have it rare, or well done depending on your preferences. Different coffees from different regions are also better suited for different roasts. A lot of African coffees... |
Passing out from donating blood? | No your body can function without being awake. All your organs are all needed to stay alive. Take being asleep, your organs can't shut down or you'd die, but for the most part your brain shuts down.How are you at blood tests seeing your blood being taken? Did you eat that day? Could be lack of sugar.It's not uncommon f... |
Why does turning my phone's wifi off/on help my phone suddenly connect to my router that was, only a few moments ago, apparently out of range? | It's because you are basically starting a new line of communication with the router. Rather than the phone weakly telling the router that it's there, when you turn it off and back on this tells the router to close that connection, then once it sees your phone again it will then reestablish that connection. The best way... |
How can my local electric company not be considered a monopoly when they are my only option for electricity? | Who told you they're not a monopoly? They clearly are. Note, though, that it's not illegal for a company to be a monopoly. |
what is the free mason society? | As it stands today I'm pretty sure it's basically just a fraternity of men attempting to "better" themselves through the values set forth in the society. Years ago they were much more relevant and if you look at their notable alumni list, it's quite extensive and has had its fingers in almost every facet including but ... |
Why are there speed limit signs that say "End 45mph" instead of just posting the new speed limit? | I have no idea why they do that but it switches to the state speed limit in That case. In NY where I am it's 55 mph.This is because most if not all States have a "standard" statutory speed limit that applies to all kinds of roads of a particular kind. So when the speed limit "ends" then the speed limit returns to whate... |
Why do my cables always get tangled while no one touches them? | It must be maths and some sort of chaos theory old chap. After all there's one way for a cable to be straight and probably a billion ways for it to be tangled tangled wins. |
Does fever (or any other symptom) provide any benefits? | Yes, a fever helps in two main ways: First, most things that make us sick, like viruses or bacteria, have adapted to our very specific body temp - ~37C or ~98F. When our body finds something inside us that isn't us, it raised the temperature a bit to make it harder for those germs. Second, a bunch of parts of the immun... |
The Secondary Mortgage Market. Why would a bank who's issued a mortgage sell it? | Lets say you get a mortgage of 150k. That loan is worth FAR more than 150k to the bank, and so they can sell it to another bank early on for a profit, say for 200k. That new bank assumes all the risk at that point and reaps most of the benefits, while the original bank gets a quick cash infusion. Win win', "Owning the ... |
How do opticians check a baby's eyes if they are illiterate and unable to speak? | Their eyes still move. We know how babies react when a toy crosses their field of view, and we can try different lenses until we find one that makes the baby's motions best match a baby with better eyes. Maybe you saw [this gif] on the front page today. You probably don't have a degree or anything and even you can tell... |
Would former Vice-President Dick Cheney technically be the 44th President of the United States? | "Acting" president. Basically he was just filling in because the president needs to be available at all times and GWB would have been sedated for the procedures.Sounds more like artistic license, but to me, it seems like it would be really a waste of time, short of being just a little 'personal' merit. |
By paying $7 to join the pharmacy's saving plan my $42 drugs cost me $8. How do they do that? | Drug prices are really weird. For most good, we expect the sales cost to be right about the cost of producing it, plus a little profit for incentive. For most drugs however, actually producing the pills is really cheap, but it would take years of tests and millions in RnD to design the drug. There's an old saying that ... |
Why haven't humans been successfully able to train whales to pull boats like dogs for a sled? | So for starters why would we? But that aside - Whales don't really fit the profile we're looking for in a trainable animal. Most animal training is focused on natural behaviors that humans can then adapt to perform a useful task. Whales don't naturally swim close to the surface for extended periods of time . they prefe... |
How do we remember everything? Doesn't our brain get overloaded with information? | The brain remembers far fewer details than you might think. It compresses and discards unnecessary information all the time. Unless you have a photographic memory , you just remember the things that stick out, and your brain reconstructs the rest based on how things like that usually looks. It uses symbols and generali... |
Blood types. What are they and why do the even exist? | There are molecules that protrude from the cell walls of your blood cells. They come in different shapes. Your immune system recognizes the ones you were born with as safe. If some are introduced with other molecules protruding from them, your immune system thinks they are an infection and fights the infection as best ... |
If Google routinely complies with DMCA takedowns, why is the most famous piracy site of all still linked? | The Pirate Bay does not host any copyrighted material. There's nothing for a DMCA takedown request to get its hooks into, because there is zero content on the website itself. |
How do they know what time to set an atomic clock to? | There is something called International Atomic Time which is the average of some 200 atomic clocks around the world being calculated by International Bureau of Weights and Measures . So they very very carefully set up measurements between clocks taking into consideration how far signals will travel, how to measure them... |
Reddit, why do insects have much more variation and interesting powers than other creatures? | One really important reason is that they have short generation times, which allows natural selection to make a lot of changes in a relatively short time. Another reason is that arthropods are really freaking ancient already, and have had time to adapt to every imaginable biological niche. |
Why can't computers normalize sounds when switching between speakers or headphones? Why do headphone users often have audio played at a higher volume (all the 'RIP headphone users' comments)? | Normally audio output is just that - a carrier signal - the computer has no idea where or in what way that output will be used. You can plug regular speakers into the headphone slot. It's the audio device's job to transform the audio signal into sound. This is simply something the source device takes no part in. Headph... |
American Football: How could a deflated football affect the outcome of the Super Bowl and why is Tom Brady being suspended? | It's not clear that it affected the outcome of the Super Bowl, but a deflated ball is a bit softer, so it's easier to throw and catch. That's especially true if it's cold or wet out - Tom Brady's suspension was for the AFC Championship specifically, where it was rainy. Each team has its own balls for when they're on of... |
why should we wash our hands after we pee if urine is "sterile"? | Urine is only sterile in your body, assuming you don't have any infections. Once it's out of your body, it's not sterile. It was thought to be sterile for quite some time though, so there is basis to the original statement, it has just been disproven. The other side of the argument is that it's just good practice and k... |
What it means that the Green Bay Packers are publicly owned. | Most NFL teams are owner by one very rich person. The Packers are more like a corporation, and they have sold stock to anybody who wants to buy it. That stock doesn't have rights to dividends or transferability, though. Basically rather than raising money from one very rich owner, the Packers raise money by selling sha... |
Why is a 128GB flash drive like 60 bucks, but a 500GB SSD like 400? | Memory is rated at different speeds. Slow memory simply costs less than fast memory, as the tolerances get tighter and the designs get more complicated. There are limits to just how fast your flash drive can read and write data, so there's no point in building one with super fast flash chips. That $60 128GB flash drive... |
How do surgeons and anesthesiologist handle the surgeries of obviously intoxicated people as opposed to sober victims? | In all situations where it is used general anesthesia is a "titrate for effect" practice. The drugs are administered only in sufficient quantities to achieve the desired effect. If alcohol, or some other drug, is known to potentiate the effect of the anesthetic agent then less is used while carefully monitoring vital s... |
How Is Obama Getting The Iran Deal Passed? | Technically, the deal does not need to be "passed". He just needs to make sure it does not get vetoed by the Senate. A veto needs 2/3 of the votes, or 67 votes. As long as there are 34 senators who approve of it, it can't get vetoed so it goes through. Currently there are at least 34 who won't vote to veto, so no actio... |
If-None-Match HTTP Header. How does it work? | The If-None-Match header must be used along with entity tags for it to be useful. It is a form of caching. If the ETags match, the server will do one thing, if the ETags don't match it will do something else. * User requests web page X in their browser* The server sends back a web page and an "ETag" header* The client ... |
How does the US have a Naval base (and detention camp) at Guantanamo Bay? | Because over a hundred years ago, the US signed a lease with the Cuban government for the base, which basically says that we get to keep it as long as we want to. Back then, the US and Cuba were on friendly terms.We had the base prior to Castro's revolution and conversion to soviet bloc. They would have to force us out... |
how does a turbo charger work? Is a turbo charged 4 cylinder engine more powerful than a v6? Is there an advantage to using a 4 cylinder turbo rather than a v6? | A turbocharger is two turbines joined by a shaft. One turbine is in the engine's exhaust system, and is turned by the exhaust gasses. The other turbine is in the intake system, and turns because it's hooked up to the first one. It pushes more air into the intake system. Because fuel only burns well when it's mixed in a... |
Why hasn't the United States or any other country taken severe action against Syria? | The UN put an entire plan together to have Assad's government turn over their chemical weapons stockpile. It is just starting to happen now. There is also a very limited appetite among western powers to get involved in sectarian civil wars in Middle Eastern countries. See: Iraq. |
Synchronous vs. asynchronous, in terms of AJAX, FTP, etc. | FTP uses two channels - a control connection which includes things like navigating the file system and starting transfers, and a data connection which performs the transfers. The control connection can queue up multiple transfers without that blocking the control connection, so that's why it's asynchronous. |
Why do people pass out within a few seconds at high altitude (e.g. loss of cabin pressure) but we can hold our breath without passing out for much longer? | If I tell you to hold your breath, straight away you'll take a really deep breath so you get a good lungfull of air to go on. If you're in an aircraft that suddenly loses cabin pressure without warning, you don't get the opportunity to go from normal breathing to preparing to hold it. You'll breathe out as normal, and ... |
After WWI and WWII, why doesn't America hate Germany? | After WWII, Germany was completely destroyed and remade as the Allies saw fit, it was almost a completely different country than pre-war Germany. Plus, Germany was an essential ally during the Cold War, which made it easier to forgive them.Well, to your first question, America hated the Nazis, not Germany. Once they we... |
Why do modern cars' rev counter and speedometer do a complete sweep of the dial when starting up? | First, it verifies it's working. The extra bump helps to ensure it won't get stuck by applying a big burst of pressure at the very beginning to sweep the entire length of its arc. If you're just crawling along after firing your engine up, that might not be enough to register if it's a little tiny bit stuck or something... |
Why are big cats such as lions or tigers able to be trained in extravagant shows while domestic cats rarely even acknowledge their owners' authority? | This is a damn good question, OP. I'm no expert. But I believe its cause the brains of domesticated cats are a lot smaller than those larger of the wild. Source: I think I read that somewhere, once.. |
Why would Israel release over 1000 prisoners for 1 soldier? | Also, because the mandatory service in Israel, it gives Israeli families comfort knowing their government will do whatever necessary to recover potentially their kidBecause Israel values having its only POW home safely more than it values having 1000 rando Palestinians locked up. It was a political move.Israel views it... |
if movies and cameras were always in a wide aspect ratio why where tvs square (4:3) for so long? | This is an easy one. Movies only went to a wide aspect ratio in response to the initial waves of televisions becoming popular in the early 1950s. & nbsp; Silent films were in 4:3 ratio, and when they moved to movies with sound, they lost some of the real estate on the strip of film to the audio track, and had to settle... |
How do "hate speech" laws work and how are they prosecuted? | Well the US doesn't have any hate speech laws, so if you're in America, don't worry about it. But for the countries that do, like Canada and the UK, there are laws against making statements that promote hatred against racial minorities, women, and LGBT people. Someone can report you if you make such a statement. But ob... |
why is it so easy to put CO2 and other greenhouse gases into the atmosphere, yet so hard to put ozone in the atmosphere? | Hard is relative. What you're talking about is deliberate geoengineering. Who is going to pay for it? What else could that money be used for? How many people is this going to require? It's not that it cannot be done, it's just that it's not all that realistic. Putting CO2 into the air in massive quantities isn't really... |
How do Hippos run so quickly, not just underwater, but on land too with so much body weight and such small legs? | They can't do it for very long. Hippos can outrun you for maybe a few hundred feet before they need to rest. Just stay out of that range and you should be good. |
If black is the absence of color, and white is a combination of every color, then what is grey? | Colours are created by objects reflecting specific wavelengths of light. White object reflect the majority of wavelengths of light that humans eyes can detect, while black objects absorb those wavelengths. Red objects reflect only red wavelengths, green reflect green, etc. Gray objects reflect only part of the waveleng... |
How do sports channels show/track the flight paths of golf balls in real time | The camera operators have a pretty good idea the path the ball is going to go, and depending on where the camera is set up it makes it easier to follow. They can start from a fairly wide shot as soon as the golfer hits the ball and once they catch it, zoom in quickly and then the director puts the camera on air. You'll... |
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