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why does army have to march instead of just walking normally? | If they don't all keep the same pace, they will fall out of step, and the line of march will become what you see when kindergarten children walk in a group to the park. Also it trains and reinforces discipline generally. |
Why do modern Game Consoles (i.e: Xbox One) seem to have less games than their predecessors (i.e: Xbox 360) despite having the same game companies? | If you look at big publishers, they're moving their focus to making money via their new term "live services" . EA made $4 Billion last year just from "live services" eclipsing what they make from game sales. Maybe it's a fad, but it does give independent games an "in" for people who don't like that model .Development t... |
How can areas in the middle of tectonic plates still have large mountains? | It's nowhere near a plate boundary *at the moment*. However, the Wesh mountain ranges were formed by tectonic activity, just a long time in the past. [This] article is the best I've found on the subject in my search for sources. |
Why is Internet so expensive in developing countries? | There are a few reasons for this: 1) developing countries need to pay in hard currency for using Tier 1 internet networks . This can get quite expensive for many countries and they need to make up the difference by charging more. However, El Salvador is somewhat an exception to this rule since El Salvador uses the $US ... |
How does a sand dune of this size form and remain stable? [X-post /r/woahdude] | It's not stable, it's moving - albeit very slowly - very much like a wave coming up a beach. I worked in Libya a few years ago and found that one of these had crawled across one of the pipeline roads, we had to wait a week before it had moved on. The speed at which they move tends to be seasonal and is directly proport... |
The whole Gawker/ Adrian Chen problem | Gawker is a blog *network*, which means they've got lots of websites working together. They're pretty scummy, over all. They practice hype journalism, report half truths and generally are very tabloid-like . They're a scumbag network with a poor site design. Recently, they threatened to write an article about a person ... |
Why commercial airplanes are usually white while military airplanes are usually grey? | 3 main reasons : 1. Minimizing visual signature . Aircraft operating over sea can be camouflaged by painting them blue -grey. 2. Blending of aircraft with the tarmac. Parked aircraft outlines are harder to see if the aircraft color doesn't provide sharp contrast with the surface they are on. 3. Modern military aircraft... |
What does nonprofit really mean? | It means that after paying employees their salaries, any theoretical profit is merely reinvested into the company in its entirety. So non profit company A makes 10 million dollars, pays employees a total of 8 million, rather than the extra 2 million being "profit," it gets reinvested back into the company for whatever ... |
why do my ears pop/hurt when I'm in a train going through a tunnel? | You are right that it's the increase in pressure with a decrease in container volume. The air pressure in the train doesn't increase because the walls bend in though. Train carriages aren't remotely airtight - the increased pressure simply 'finds its way in' through gaps in doors, open windows, ventilation ducts etc.Ye... |
Reddit keeps telling me that vaginas don't get looser with sex. But then why do buttholes get looser with sex? | Your butthole is made of a muscle called the anal sphincter. Just like stretching your leg muscles will make your legs more flexible, stretching your anus will make your anus more flexible. Vaginas are meant to be stretched.The vagina is made of flesh that is made to stretch to incredible proportions that cannot and wi... |
Why does the voice inside our heads sound differently than our actual voice? | Not an expert, but here is my observations. When we hear our voice in a recording we are using our ears to hear a sound from an external source. When we hear ourselves talking face to face with another person we hear a combination of sound from an external source and an internal source vibrating all the internal organs... |
Why are introductory classes referred to as 101? | Most college classes get 3-digit numbers. 1xx is first year, 2xx is second, 3xx is third and 4xx is fourth year . Stereotypically, 101 would be the introductory first year class in the subject. This isn't always the case, but the idea's stuck in the popular consciousness. |
Why isn't Google Fiber everywhere? | Infrastructure. It's extremely expensive to lay fiber in the ground, and it's also fragile and expensive to maintain. At some point Level 3 laid a ton of it across the nation . There are many ISP's out there that piggy back on those lines and sell service to larger business clients that require that kind of bandwidth, ... |
Why doesn't lightning striking lakes/ocean fry all the fish, yet swimming during a lightning storm is a terrible idea? | When lightning hits the ocean, the discharge spreads over the surface of the water. Any fish/human near the surface will be electrocuted. Edit: humans are also better conductors than fish so the damage will be more substantial.Water itself is actually a terrible conductor. Pure H2O contains no metals, so it's not very ... |
Root-mean-square speed of molecules and how it differs from average speed. | Pretend there is one dimension with two molecules, one travelling right at 2m/s, one travelling left at 2m/s. If we take the average: 2+=0, so the average speed is 0. If we take the root means square: 2^2 + 2^2 = 8, divided by 2 = 4 , sqrt=2 . So it allows you to ignore the direction element of velocity. |
How do we colorize old black and white films? | We guess at the colors, or use historical information . Other than that we do it essentially frame-by-frame, although digital tools help a lot in making that easier than it once was . |
What is an U.S college 'GPA' and how is it calculated? | It's a 4 point scale of how well you did. For each class, an A is worth 4 points, a B is worth 3 points, a C is 2, a D is 1, and you get no points for failing. Some schools also adjust the score if you're near the border of a grade- an A- would be worth 3.7, a B+ would be worth 3.3, a B- would be worth 2.7, and so on. ... |
Why were humans able to capture "black and white" photo/video before they were able to capture "color" photo/video? | Basically, there are different photosensitive chemicals that capture different colors of light. Getting things in terms of light and dark using one chemical is fairly easy. However, the first hurdle was discovering and being able to produce chemicals that only reacted to certain colors of light. Then, the different amo... |
How sex feels differently for men and women. | my 5 year old doesnt need to know what sex feels like', "Think of it this way: When you're picking your nose, ask yourself what feels better, the finger or the nose?", 'Well, from what Reddit has taught me, there are shitty locks and there are master keys.My observations conclude that, contrary to all appearances, men ... |
Why can I wake up when I want to? (No alarm) | Over year after year of having experience with time. Your subconscious basically becomes a clock. You subconsciously are keeping track of time. You know when you need to do this or that even when you are sleep. It's natural for everyone to subconsciously have some track of time even when not thinking about it. However ... |
How did the word "father" get shortened to "dad"? | > How did the word "father" get shortened to "dad"? It didn't. "Dad" is not a shortening of "father". It's a completely separate word that appears to have been adapted from the initial sounds made by young children learning to talk. They find it easy to make repetitive consonant-vowel pairs like "da da da da" and "ma m... |
How does Lego get to use characters and IP from across many franchises that aren't owned by the same entities (i.e. DC & Marvel among many others)? | They license these themes individually, and pay a hefty price for it. Doing so allows them to cross many mediums, even so, it may cause controversy. This is why most of the time these franchises do not cross over and are in stand alone games, though the LEGO Movie was an exception. But notice how you never see Iron Man... |
Why are so many websites asking for $3 donations? | They are making the point that since so many people use that particular website, that $3 from every user would cover the costs of maintaining the site for the upcoming year, hence why it's at the end of the year. It's typically cheaper to pay for hosting annually, rather than monthly. |
How does glass absorb UV radiation. Why can't quartz glass absorb UV radiation? | Glass scientist here. Silica glass actually does allow 99%+ UV light to transmit down to about 160nm, which is well into the UV part of the spectrum. In order for it to do this though the glass has to be very, very pure. In most glass that you and I come across on a daily basis there is a large amount of impurity ions,... |
Why are companies responsible if they buy a company that did something bad in the past? | Because they are buying the company not just the machines in the factory. Q. What is CocaCola? A. a cheap fizzy drink of which there are multiple copies. Q. What is the Coca cola company? If you said a bunch of places where they make and bottle the afore mentioned fizzy drink then you are only partially right. They are... |
Why people say "Excuse my French" when they swear | It's a play on its original meaning. Originally it was said as an actual apology for someone using a french word or expression . _URL_0_ |
Why are human bones so strong, yet break so easily? | Bone is stronger than common materials like wood, glass, and most plastics. But even things that are strong can break. You just have to put enough stress on them. Human bones are generally rather slender , so it's easy to put quite a lot of torque on them by accident. Trap the forearm securely at the elbow, put a large... |
Why do certain first names become popular and less popular in certain time periods? | A theory on names becoming less popular is that a name will be popularized by the higher class and then middle class people start naming their babies Diana, and soon the lower class starts naming their babies Diana. As this happens the name starts loosing popularity among higher class, then middle class, then lower cla... |
Why do pen caps have holes, but if you leave the cap off it dries out? | It prevents children and lead-lickers from sucking the cap down their gob hole like a vaccuum ripping your last 1x2 LEGO brick off your bedroom floor. And if they do, the paramedics also don't need to use the now capless pen to trach the little blueberries. |
When you leave water boiling for a "long" time, the bubbles that are created at the bottom, no longer make it to the surface. Why? | Actually, they do. You just can't see it. When water starts boiling it will generate bubbles at the hottest spots - the parts where the water touches the metal. Those bubbles release and float to the top and pop into the air. Once the water has been boiled long enough, all of the water will be the same temperature. Bub... |
Can someone explain what a binary search is, and why is it so interesting as a programming problem? | Binary searching works because the data it searchs over is already sorted into an order. Imagine you're looking for Dave Davison's phone number in a phone book. If you open it at the middle and see that you're on the page for Martin Murray then you know that D is lower in the alphabet than M, so you can discard the who... |
Why do flies always land on the same spot on people? | They likely landed there initially/stumbled across a tasty spot on you . They decide they like it > every time you move they flip shit and buzz away for a second or two like the tweakers they are > they land back there because they still like what you taste likeMost insects, definitely flies, are not smart enough to be... |
What would be the impact if in the next Presidential election, a Republican wins, thus controlling both Congress and White House? | "can they make a ridiculous, highly partisan law/bill come to life?" Yes. If the Democrats have enough members they can fillibuster and use other procedures to prevent votes. But in general the Republicans would have free reign. And of course, if the new law is ridiculous enough to be potentially unconstitutional the S... |
What does it mean when the United States has spent over five trillion dollars as a result of wars after 9/11? | It means that the US has borrowed 5 trillion from the federal reserve and has paid both for equipment, salary to troops, and for resources to fund the wars. |
what's a creepypasta? | Copypasta = Copy and PasteCreepy = Scary or disturbing story. Creepypasta = Often reposted, word for word, creepy storyA short ghost/horror story that is repeatedly posted to internet sites. It's a combination of the words copypasta and creepy. "[THEN WHO WAS PHONE?]" is the punchline to a creepypasta that has gone mem... |
The pros and cons of charter schools? | Charter Schools are public schools that receive public funds, but are often ran by private companies. Their effectiveness is hotly debated. Charter schools usually have to abide by the same standards as do public schools. They receive the same amount of funding per student as public schools and must have open enrollmen... |
What is Dark Matter? Why is it important? | Our galaxy are rotating so fast that they should fly apart because there is not enough mass to hold them together. Some unexplained phenomenon must be behind it, and so the concept of dark matter was born as a placeholder until we could figure exactly what it is. We've confirmed the existence of dark matter via lensing... |
Why don't I lose weight when I take a poop | You do lose weight when you poop. You just don't lose body fat or muscle. But since the amount of food and feces in you is mostly constant over time, it doesn't really factor in for total body weight. |
why do pebbles tend to ovoid, rather than spherical? | Because they are formed in water, and water generally flows from one direction to the other cause the sides of the stone pointing horizontally compared to the flow of the water to grind down faster than the sides pointing towards/with the flow of the water. |
What would happen if the President-Elect and VP-Elect died before they took office. | Secretary of State is next, followed by Sec. Treasury, and so on and so on: _URL_0_ |
If red and violet are at opposite ends of the color spectrum and continue into infrared and ultraviolet, respectively, why do we see them as a continuous part of the color wheel? | This is a good question, and a lot of people never consider it, nor other very related questions, such as, Why do red and yellow subtract to orange, and Why do magenta and green add to yellow? What is happening with the frequencies - obviously the frequency of the light isn't being added or subtracted because the sums ... |
Why does everything have a blue hue to it when having your eyes closed in the sun for while then opening them? | What you "see" all the time is actually just an interpretation your brain creates of the images your eyes feed to it. This is how optical illusions usually work: they exploit flaws in the transmission from eye-to-brain. What's happening here is that when you close your eyes, you see red. That's because your skin and bl... |
Why does the banana in my lunch bag make my sandwich taste like bananas, even through the plastic sandwich baggie? | Bananas emit a large amount of a ripening agent called ethylene. Some of the banana molecules stay with the gas, giving the sandwich a banana-y flavor. It could also taste like bananas because .ya know your eating a sandwich with a bananaplastic is porous and bananas have a strong odor? I know that we had a mixed bag o... |
Why do priests seem to disproportionately be perpetrators of sexual acts with children? | Cases get publicized a lot and very aggressively, so it might seem like it's happening all the time 24/7 at an alarming/epidemic rate, when really, it's just getting reported more . We're more aware of the problem now, which is a very good thing, because now it's out in the open and we can work to combat it. The other ... |
How voter ID laws are discriminatory | Well, voter ID laws by design make it more difficult to vote - the idea being that if it's too easy to register to vote, people might do so fraudulently. In fact, there's little evidence of that type of fraud occurring. To answer the question: 1. Voter ID laws typically require a potential voter to obtain a specific fo... |
If dust is made up mostly of dead skin particles, why are places devoid of humans (abandoned houses, etc) found to be so dusty? What is that dust made up of? | Your premise is incorrect; it's not mostly dead skin. This is actually a pretty good breakdown of the [composition of dust]. |
What is actually happening when your heart "aches"? | "When we feel heartache, for example, we are experiencing a blend of emotional stress and the stress-induced sensations in our chest—muscle tightness, increased heart rate, abnormal stomach activity and shortness of breath. In fact, emotional pain involves the same brain regions as physical pain, suggesting the two are... |
Why did the Russian Ruble value drop from 34 to 54 (to a dollar) in less than 6 month? | Russia's economy is very reliant on oil and natural gas production. When the price of these products goes down, Russian companies make less money and thus people get paid less, spend less, and the economy slows down. In the past few months, OPEC -- which includes many of the largest middle eastern oil producing countri... |
Why does my stomach feel like it's sinking when I'm anxious? | From what I understand, your body essentially reallocates blood flow toward certain areas to aid in some functions. I believe the digestion isn't an important function when the more immediate fight or flight instinct kicks in. |
Why does hot mustard burn in nose and not the mouth like hot chili? | Mustard contains an oil called **allylisothiocyanate**. This vaporizes rather easily on your tounge, and wafts up into your nasal cavity, where it causes pain and irritation. Capsaicin, which is responsible for hot chili peppers, doesn't vaporize as easily at human body temperatures. |
Why do things freeze in space? Where does the heat in the object go? | > In space there isn't any matter to transfer the heat into, so where does it go? Thermal radiation. Conduction isn't the only method of heat transfer, it can leave through things like infrared radiation as well. |
what is an algorithm? I looked it up and read some stuff and all I really got from it was it's an order of things. sounds like the most complicated thing in the universe | That's all it really is. It's a series of steps . Here's an algorithm for my morning: 1. Wake up2. Brush teeth3. Shower4. Let dog out5. Get dressed6. Feed dog7. Leave for work Most often algorithm is applied to computers and programming, but the meaning is the same. Perform these series of steps to solve a problem or g... |
Why hasn't real-time voting or real-time vote calculation happened yet? Wouldn't it make sense to have a central database that collects all the votes regardless of where they're made? | There are, as with a lot of things that make sense, two problems. First, and most rationally, there's the issue of money. Changing from the existing systems to a centralized, or even localized database system that could be tracked in real-time, would require a complete or near-complete overhaul of the system, which wou... |
When flying, the cabin lighting seems to cut out briefly several times during the flight. What is happening to the electrical system that causes this? | There is more than one electrical power source on an aircraft. Actually, almost every system has redundancies. Anyhow, you have batteries, possibly an external power source that can be connected, the APU , and the generators on the engines themselves. When you see the lights briefly flicker, the flight crew is switchin... |
What the scientific meme is? | Are you talking about the Sociological concept of a meme? Well essentially it's a thought virus, a concept that quickly spreads from person to person. Most cultural norms would be considered memetic in nature. |
How is water conservation such a prominent issue if water is a renewable resource? | Fresh water is what's required for us to live, yet out of all the water in the world, only 2.5% is freshwater. What's worse, only 1% of that freshwater is accessible to us! The clouds often don't go where it's needed, mostly falls into the ocean. This is bad because ocean water isn't good to drink . There are methods t... |
How come in an age where almost every animal is smaller than it's evolutionary predecessor, we have the largest animal ever known, the Blue Whale? | I'm not sure where you're getting the idea that every animal is smaller than its evolutionary predecessor. I don't think that's the case. But it's harder for terrestrial animals to reach larger sizes than it is for aquatic animals. Bones and muscle have to work against gravity on land, but these constraints disappear i... |
Why does beer foam take more time to settle than soda foam? | Beer has protein from the malt and oil from the hops that both make the head more stableI think I should know the answer to this |
How does the Cable TV System Work? | First a quick primer on the industry. Your cable bill largely goes to pay for content. [Here's a list of guesses at fees] the list is old, and they're probably a good 20-30% higher than that today. Carriage fees are negotiated and vary between operators. Any package that includes one of these channels will result in th... |
Why is chewing gum satisfying but starbursts make you want to swallow them? | I feel compelled to swallow gum, and in fact usually do. Most of my gum disappears in a day, and I don't give away. Anybody else? |
How was Chris Hanson's show, To Catch A Predator, legal? | What you're probably thinking of is entrapment. Entrapment is when the police convince someone to commit a crime that they wouldn't otherwise commit. The suspects have to be the ones to do thing like start a sexual conversation, suggest a meeting, etc. The person behind the child's profile just plays along. |
Rules on buying recreational marijuana in Colorado | 1. Depends on the store. Google 'colorado recreational marijuana' to find places that sell it.1. 1/4 oz.1. AFAIK, yes, you can go to different stores. The maximum legal carry amount is 1 oz.1. Yes. |
what is the internet physically? | The internet isnt centralized meaning the isn't a master server or some master overall arching component to it. In essence the internet is just a bunch of computers that interconnected and talk to each other for an ELI5 answer. When you are playing a game for example that data gets send to your modem from your router a... |
The concept of aspect ratio and resolution and how they are useful while buying tv or smartphone. | Aspect ratio is the ratio between length and width, old tv's were 4:3 and new tv\'a are 16x9. Most smartphones now are also 16x9. Resolution deals with pixels, a 16x9 1080p display will have 1920 columns with 1080 pixels each, 1920x1080. As for resolution for tv/phones, the size of the screen and viewing distance matte... |
Why does baking soda have seemingly endless uses? | Baking soda, or sodium bicarbonate, is useful because it's a weak base that won't harm a human being. Whenever we need a weak basic chemical, it's easy to turn to baking soda. Furthermore, it's also reliably found in most homes, so it's easy to find as well. |
Why doesn't toilet water evaporate? | It does evaporate. Ignore your toilet for a few weeks and it will be really noticeablePerhaps you were wondering why it does not *appear* to evaporate, because obviously, as water, it does. The configuration of toilets does vary, but usually there is a relatively small surface area exposed. This is the interface throug... |
When you're sick/you have a fever, why do food and drinks taste bad or bitter? | Generally, because on top of the fever, you're congested. "Taste" is heavily dependent on your sense of smell, so if that's not working right, your food tastes like cardboard. Same reason food eaten during airline travel always tastes a bit off. |
In the music industry, what does an audio engineer do and how is this different than what a producer does? | A producer is the logistical and managerial head of the production. He likely works for the record company that is funding the recording and is there to make sure everything goes smoothly. He hires the audio engineer and any other players . Any other session musicians hired for the day, he will be in charge of and have... |
What is a neutrino and what are the implications of it travelling faster than the speed of light? | To a 5 year old, Einstein's theory of relativity may have been disproved. To a high school student, the theory of relativity, among other things, says that particles cannot reach the speed of light. When things are moving slowly, when you increase kinetic energy, speed increases with a relationship of E being proportio... |
What is different about the skin of my penis that makes it more sensitive to spice (jalapenos) than the rest of my body? | More nerve endings in your penis than anywhere else in the body that's why sex is awesome and shaking hands in mundane |
What does the EU banning memes actually mean? | In practice not much. What it means is they put in legislation that makes it illegal to use copywrited images without permission. So all those stock photo memes or screenshots now break that rule and are “illegal” . Anything that is actually original content is fine.It's about copyright. Memes are technically copyright... |
How does Facebook change its mobile layout and colors without having me update it on the App Store/play store? | A bunch of the stuff you see in the FB app is done not with compiled native code but with HTML and Javascript. These assets can be downloaded and updated without changing the compiled app and thus don't require a new version in the Play/App Stores. It's a little risky on FB's part, because there are a ton of security c... |
If dinosaurs were huge because of more oxygen in the past, why aren't the Himalayan tribes generally shorter than us? | My guess: Hundreds and thousands of years is nothing compared to the millions and millions of years that dinosaurs had to evolve. According to this it took [a very long time] to get from mouse to elephant. In order to see any meaningful difference in height would take a very very very long time. Not really measurable i... |
What punishment would I face for unknowingly paying for something with counterfeit currency that I received from another unknowing person? | None. Counterfeit money gets circulated all the time, half the time passed from the counterfeiter to a cashier who doesn't check it, then paid out as change, then to another cashier, then out as change again Your punishment is that you're out $20 because no one will want it, and odds are good you're not even getting th... |
why do most people prefer to play racing video games in a third person view and shooting games in first person. | In racing games, half the fun is how your car looks. Not to mention it gives you a greater view of the track so it's easier to see bends and other racers coming up behind you. In shooting games you don't really care about how you look, and it's easier to aim in First Person View because then you just needs to get peopl... |
How linear algebra is involved in things like google's search algorithm? | The original, fundamental insight behind Google's success as a search engine was the [PageRank algorithm]. If I'm looking for information about, say, walnuts, then a web page that a lot of people link to with the text “walnuts” is probably a good match. But not all links are of equal significance: a link from a page th... |
Random rushing feeling while in bed late at night | If ever I'm sick, I have a very distinct "dream" consisting of an environment composed entirely of tv static and a single potato like object being stabbed repeatedly by a sewing needle. It's been like this for as long as I can remember. It's terrifying.I get this too. Usually when i'm about to lose consciousness. The r... |
What's currently happening in Australia with the Liberal party? | Basically, Abbott is a cunt. How do I back this up? He's the most unpopular Prime Minister in Australia's history. He's all talk and no substance. He's a self admitted liar, he ran on 3 word slogans and he can't turn them into anything. No matter what question you ask him he'll reply by saying, "I 've stopped the boats... |
How did gamers navigate complex titles like The Legend of Zelda before the advent of the internet? | There was never anything impossible about them. Games today are just generally easierPeople just figured them out. Nowadays people say they're "stuck" if it takes like 30 minutes to figure something out.I remember as a kid being 'stuck\' sometimes at a certain spot for weeks before figuring it out. When you look back a... |
How does radar work? And why can you only pick up objects on radar if they are above a certain latitude? | As a former 14E soldier: * Yes, as long as there is nothing between the object in the air and the emitter, it can see the object. This includes rain clouds. * You can't see below your wavelenght - the distance over which the wave's shape repeats. Most air traffic control radars are 1–2 GHz 15–30 cm wavelength. * The re... |
why 'Diplomatic Immunity' is a thing. | Diplomats are flesh and blood representatives of a government living in a foreign place. There is a very long history of these representatives being imprisoned, held hostage, and killed by the host as part of negotiating strategies. The threat of harm to a diplomat or those he or she cares about can cause the diplomat ... |
With hundreds of 100 tonne aeroplanes landing all the time, why don't the lights on runways (which seem to be quite big) get smashed? | The planes never actually touch the lights on the runway! The lights are located on the edges of it, and the planes land in betweenRunway centre line lights would take the biggest beating, as the nose gear of the aircraft can travel over them at high speed. They are embedded into the surface of the runway and have a ve... |
Israel and America's relationship. | Jews have been bullied for a while and America thought I'd be nice to have just one little ally in the middle east. So America armed Israel to the teeth with guns and nukes. |
Difference between Modernism and Postmodernism and Post-postmodernism. | Modernism says 'lets leave behind the old and be MODERN'. It rejects traditional design considerations, even if they are useful. Post-modernism says 'throwing away all the old truths didn't work any better; new modern truths still kind of suck. Perhaps there is no real truth' Post-post-modernism says 'ok, let's get rea... |
Why does salt make everything taste so good? | Your body needs sodium and chloride to live, and humans have evolved to find the taste of table salt very appetizing. This is the same reason we love the taste of sugar, proteins, fats, etc. We need them to live. Of course in the modern age, we get way way too much of these things, but our sense of taste hasn't caught ... |
When the Air Force (or any branch) deploys airframes 1000s of miles away, how does it physically get them there? | It depends on the particular vehicle being deployed. For fighter jets, it's almost always aerial refueling. They basically follow a tanker all the way to their destination so they can keep their fuel tanks full enough that they can divert to a land base in case of problems with either their own systems or their tanker.... |
Why are there so many photographers at sporting events taking pictures? All the highlights are from the video anyways. | The sell them to newspapers, annuals, sites etc. and get a licensing fee from its use. They are their privately, or with the clubs. Not employed by the broadcasting teamA camera still frame can be more "HD" than a video could take, unless it was a really REALLY powerful camera and they wanted 100s of TBs of footage.The... |
What is the wall you hit before shifting into the next gear when driving a manual transmission? | From the question you could either be talking about moving outside the power band or hitting the rev limiter. Modern electronically controlled engines have an rpm limit that you can't go past. So it definitely feels like "hitting a wall" if you accelerate to an RPM that high. But in most vehicles, you will notice eithe... |
Why can I do 20+ pull ups with two hands but cannot even take myself off the ground with one? | The mechanical leverage is completely different. With both hands, your grip provides stabilization and minimizes any side-to-side swinging or rotation of your body. With one hand, your body can swing front to back, side to side, or rotate. Not only that, but your abs, back, butt, and legs remain rigid and lend stabiliz... |
What exactly is "linkbait"? | Legitimate links tend to have some original content. This could be a blog post on a completely new idea, or it could be a news article with commentary on other news articles. The only important factor is that someone put some actual thought into it. Linkbait is links that just copy content from elsewhere, or redirect y... |
Why does drinking increase the amount of hiccups. I'm drunk. | You know how alcoholic beverages are fermented? During fermentation, CO2 is released during the conversion of pyruvate to acetaldehyde. . So, when you drink five or six or seven drinks, that carbonation causes your stomach to expand. When that happens, the phrenic nerve is irritated and your diaphragm involuntarily spa... |
How can 215,000 jobs be added but the unemployment rate ticks up to 5%? | You dont count as unemployed if you arent trying to find a job. So people like stay at home moms or people who just totally gave up looking for a job dont count in the unemployment numbers. So if you add jobs maybe that motivates more of that group to start looking. This can cause the unemployment rate to go up because... |
What is the "apple" joke in Good Will Hunting? | It's an old expression basically used to taunt someone or put them in their place. A modern version might be "deal with it." So, Will asks the guy if he likes apples, then shows that he got the girl's phone number and says, in effect, "deal with it." He just uses an older slang expression. So it's not much of a joke, r... |
Why is it that when air is moving, it tends to feel colder? | You warm the air around you, because heat always travels from hot to cold. If there's an air current, all that air you heated up gets replaced by new, colder air that has to be heated up all over again. |
[META] Can we please turn ELI5 back into ELI5? | From the sidebar: E is for explain.This is for concepts you'd like to understand better; not for simple one word answers, walkthroughs, or personal problems.LI5 means friendly, simplified and layman-accessible explanations.Not responses aimed at literal five year olds .> nobody is explaining shit in context that would ... |
If you jumped in the air at the perfect time right before impact, could you survive a train falling into water that went off the rails? | If you had the thighs of gods and can jump at unhuman speeds, maybe. For the rest of us, no. The momentum change from jumping won't make a difference.Basically no, although it would depend on how fast the train was falling. Consider an elevator car with the same scenario, it is falling at probably tens of metres per se... |
Ohms Law. How does the second law exist in a series circuit? | Ground is the return path for current. Kirchoff's current law states that the current entering a node is equal to the current leaving a node. So when you sink current into ground, it's really acting as that return path for current to flow back to the input. Which is why you'll see the ground rail of all inputs connecte... |
How can the Greek government have spent so much that they are still broke? What was all this money spent on? | In a single word: corruption. Not only the politicians , also the population. Since the Ottoman times, the Greek culture holds the idea that the government is an enemy and everything should be done to avoid giving money to it. So tax evasion is rampant and socially acceptable, in all layers of the society. It's helped ... |
Why is Bill Cosby not in jail? | Because he's not guilty of anything, he's never been charged, there's never been a trial. Regardless of personal opinion, the presumption of innocence is a legal thing, therefore he's innocent until proven guilty - hearsay and conjecture mean nothing, trial by media doesn't stand", 'The majority of the allegations so f... |
When shot, why do bullets "rainbow" up before they hit a target, instead of just flying straight? | A bullet fired from a barrel of a gun is propelled straight out of the barrel, on a line that follows the centerline of the barrel. The bullet, whether fired parallel to the earth, or straight up or at any angle in between, follows a ballistic path determined by its initial velocity, it rate of spin, its aerodynamics, ... |
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