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How do they take video of the ISS? | Approaching spacecraft, cameras on extensions, and spacewalking astronauts are all viable options. Without knowing which picture/film you have in mind, I would guess an approaching spacecraft, as the docking procedure requires very precise movement that would make the ISS look like it was standing still in comparison. |
How do insects crawl on walls and ceilings? Are there any animals that can do that? | It's because at that small scale, even surfaces we think are smooth have some texture, so if an animal is light enough and small enough it can grab onto that surface with enough hold to keep their body from falling. Think one of those manmade rock climbing walls scaled down to microscopic size; the little grab bits wou... |
Why is the .22 such a highly valued bullet? | .22 is normally very cheap. It's a great round for shooting without breaking ones budget and is very popular for that reason. People have been hoarding ammo since all the gun laws were announced in the wake of Sandy Hook, drastically drying up supply. Since ammo is difficult to get people have been buying a lot of the ... |
- how is the elevation of mountains etc measured without GPS? | If you know how far away you are from something , and you know the angle an imaginary line between the top of that something forms with the ground where you are, then you can use simple trig calculations to figure out the height. |
Why are males, ages 15-25, typically the target audience for most movies, games, and tv shows? | They're not, that's a fallacy. For games, perhaps. For television, not at all -- the 19-34 demographic is deemed most important. |
Is the God for Christianity, Judaism, and Islam the same "person." | I only know about Islam so that's how I'll answer, In Islam the deity is a single God transposed from this universe, meaning he or it resides out of the space time continuum, in Arabic the noun used is Allah which translates to The God, the first two letters are common in Arabic and stand for 'the'. Mohammed is a proph... |
Why do humans scream when they're in pain? | Two reasons: to signal to others that you need help, and to signal others that there might be something absurdly dangerous munching on you and maybe you should run away really fast. Most social animals have similar vocalizations on pain.Screaming is the easiest loud noice you can do so it's easy for your body to do it ... |
Why is our standard calendar not 13 months, each with 28 days? | The Romans did not have a full calendar of the year. They started counting the days when spring arrived in March and counted for ten lunar cycles until winter. They only counted days and months but not weeks like we do now. The lunar cycle is 29.5 days or roughly 30 days so this is the length of a month. And this is th... |
Why protesters against big companies, are allowed to block traffic and inconvenience average people. | As to the questions about "doesn't that just turn people against them." That is always a gamble. The calculus is this: If we don't inconvenience anyone, nobody will listen. If we inconvenience people, we will get press coverage for our cause. Some of the peole who see us in the news will support us. # of people who see... |
Why can our eyes adjust so quickly to a bright environment but it takes a while to adjust to a dark one? | It's not about your pupils - it's about your retinas. You have two types of cells in your retina - rods and cones. Cones are good for colors, but only work well in bright light. Rods do very well in low light, but very poor in colors. When you to bright lights, you oversaturate your rods and they don't do well processi... |
Why can't America deploy the National Guard to areas like South Side of Chicago to help with the overwhelming crime rate and eventually restore order. | Because the Governor of Illinois hasn't decided to ask them to. He can, because Posse Comitatus doesn't apply to the Guard, but it the political fallout would probably be pretty bad. |
How is the calorie/fat/carb content of food measured for product nutrition labels? | Okay class, settle down! Today's lesson is "Calories" To produce energy, your body combines the food you eat with the oxygen that you breathe. This is the same way that fire works! Now, combining food with oxygen releases a lot of energy - that is why fire gets very hot! Instead of getting very hot like a campfire, yo... |
Legally speaking, did the Emancipation Proclamation free the slaves? | no it just freed the slaves in the rebelling states .it was a strategic tactic. the 13th amendment freed the slaves almost 3 years later. |
What makes Bobby Fischer better than other chess prodigies? | A lot of it was he grew up in a place that had almost no support for top chess players. At the time America was a chess wasteland. The best analogy I heard was imagine an Eskimo created a tennis court in Alaska, trained by himself and then won Wimbledon.^^Yes, that, but also, he had a creativity to him that was just re... |
How does testosterone work? Why do some of the muscular guys have no beard or a high pitched voice? Is testosterone divided between traits? | If I recall correctly, there's not just 'testosterone', there's anabolic - which is muscle building, and androgenic - which contributes to 'male' features . So there's that, but I think there's more to it than just the presence of those hormones. I can't say what, though, because I don't know. I do know that bodybuilde... |
How did it get to a stage where most, if not all, people need to take out a loan to buy a house? Why do we need loans? | A house is a durable good. It makes sense to borrow money to buy one, because the service life of the house is at least equal to the length of the mortgage. Since the value of the house is likely to remain constant during the life of the mortgage, the borrower can exit the mortgage virtually at will if desired, making ... |
How do computers organize their memory? | It starts like the bookshelf. However, from time to time the computer will momentarily pause other operations in order to push things together, in order to combine lots of little spaces into bigger, easier-to-use spaces.The answer is dependent on the OS you are running. Ultimately it's the OS that organizes how the mem... |
Why are screen refresh rates most commonly divisible by 30? | The electrical grid in the US is alternating current at 60Hz. This made it much easier for CRT displays to cycle at 60Hz or multiples. |
Why is snow white if it's essentially just frozen water? | Because it refracts light. Same reason clouds are white. Water isn't truly 100% transparent, just close to it. You can see this in ice cubes with small cracks in them too. |
Why do some people suffer from 'shy bladder'? | I don't have any references handy, but I've been told it's a holdover from our mammalian roots. Like dogs pee to mark territory, we don't want to pee in front of others because of anxiety about making aggression displays. Also, your weenie is out. That's vulnerable, so anxiety happens. Edit-spelling |
How APU processor works? | Well, I am hoping since you have asked that you first know what a CPU and a GPU is. But if not, I'll try to explain. A computer has a bunch of parts, everthing has its own job. Like a factory. The CPU makes numbers, the GPU makes pictures, and the CD-ROM isn't for bologna. The idea of the APU, is to introduce a new wor... |
Why do you have to sign up for cashback bonuses? | The cashback programs cost the credit card companies money. They want to be known as having a good rewards program, but they don't want many people taking advantage of it. Thus, they implemented a program where people have to opt-in to take advantage of it. Mail-in rebates work the exact same way. Those companies know ... |
Are their animal's that tan similar to humans? | Pigs and hippos bathe in mud to protect their skin from the sun. Other animals might as well but those are the two that came to mind first.I've seen farmers at a fair cover their pigs in sunblock so the don't sunburn from being in a sunny pen all day.Sting rays have been known to get tan when moved from their murky nat... |
Why do girls always go to the bathroom in groups? | As it's been explained to me, it's because of a number of reason: * There is often a line and it gives them someone to talk to * Because they want to talk about you/the people they are with * They don't want to get hit on That is what I was told when I've asked. |
in America I see tons of land that is unpopulated. If nobody owned this land since America was founded how could someone obtain this property? | Just because it's unoccupied doesn't mean it's unowned. When the US was forming and expanding, it claimed a lot of land for itself. Most of that land it then sold or gave to various citizens . A lot of these land claims were huge, so a family lived on the land and over generations sold it off to other people. Some of t... |
Why do we sleep on beds and not directly on mattresses? | So, I live in Germany and slept on a mattress on the floor for years and it was absolutely fine. Then I moved to a place with a cement floor . The answer is not cleanliness, for it's perfectly possible to keep your floor clean but you want to be warm in your bed, and if you live in a cold place, you'll be absolutely mi... |
Why do we enjoy seeing other people startled or scared? | Well a lot of those hidden camera pranks are to see the bewilderment of others. We like seeing other people get confused by "dumb" pranks, because we are in on it. Also, as FX114 said, schadenfreude is a pretty big cause. Seeing others get scared is funny because it isn't happening to us, and we can simply derive pleas... |
Why do car dealerships (both foreign and domestic) fly huge american flags? | Trying to cash in on the patriotism of consumers.I think [this video] does a pretty good job showing the kind of sentiment they're trying to get across.To take advantage of the less intelligent publicTo attract your attention. |
Why is the Pope considered holy and revered by Catholics, in the splendor of the Vatican, dressed in rich garments - while the Catholic/Christian savior preached humility? | tl;dr Pope used to be sort of like a king and now it is mostly tradition. First off it is a complicated issue. With that out of the way and trying to stay agnostic and simple about it In the past, like in the Middle Ages and such the church wasn't just a place to go an worship once a week. After Rome "fell" the Catholi... |
Why do we use the middlefinger to make inappropriate signs? | The ancient Greeks and Romans used it as a disparaging gesture because when all, save the middle finger, are clenched, it resembles an erect penis and testicles; it's quite literally saying 'fuck you'. |
Car Tires, how don't they pop! | Yes, they are strong. Fibres - natural fibres, plastic fibres, glass fibres or even kevlar or carbon if the strength is really required, are embedded into the walls and across the tread of the tyres. There are even steel belts that run around the tyre. But what actually holds up the tyre is air pressure. The pressure i... |
What's actually inside the Kaaba in Mecca? | There's a black stone set into the wall, originally by Muhammed. It's thought to be a meteorite. It's mostly empty now. It has a few lamps, three support pillars, and plaques dedicated to its renovators. Originally, it was a gathering place for different pagan religions to worship their idols. These idols were in contr... |
Why does almost every cop tv show portray internal affairs as a bad thing? | Because when you're a cop, internal affairs doesn't really benefit you. Either they accuse you of misconduct, or they leave you alone. Their purpose is to protect the non-cop public.Because in almost every cop TV show, the cops are the good guys, and by TV logic, anything that causes problems to the good guys is a bad ... |
How come animals can drink water from lakes and rivers without getting really sick while humans would unless the water is filtered and cleansed? | This was already answered a while back. To make it short, they dont. They still get sick, it's either drink it and get sick, or die of dehydration. They respond to bacteria differently of course, and may even be less affected by some illnesses or bacteria than humans, but nonetheless still contract diseases, infections... |
Why does my ear start ringing really hard at spontaneous times during the day?? | You might get better answers posing this question in /r/health. Ultimately, though, the best person to consult about ringing in your ears is your doctor. |
how is it things like lobsters are able to breathe, both under water and out of water? | Lobsters cannot breathe out of the water. Amphibians can breathe in and out of water because the have lungs and/or gills and can absorb oxygen through their skin. |
what happens when you "lose your voice"? | when your vocal folds are inflamed or Irritated they cannot vibrate properly actually this can have multiple reasons, also psychological . Most of the time its simply an inflamation of your larynx which hinders your vocal cords to virbrate correctly. |
Why does my muscles hurt hours after the workout not during or mins after it? | So muscle mass is built by forming very small tears in your muscles, then they're repaired better, faster, stronger. This is the part that hurts, and will hurt more if you do a really heavy workout and then try to use the same muscles, e.g. running a marathon and then going for a hike. The reason you don't feel it duri... |
Why my eyes get red in pictures and what can I do to avoid this? | The red you are seeing is the inside of your eye, behind your pupil. This is part of the natural anatomy of your eye, so the only ways to stop it is to turn the flash off when you take the picture. If you are okay with editing in post, most editors have a "red eye" feature that "fixes" this because it is so common. |
How does our genetic timer know when to start puberty? | **ELI5 answer**: We aren't quite sure what it is that definitively determines the timing at which one begins puberty. However, we are aware of the things that may contribute to the beginning of this process, which may or may not include: what we eat, what time our parents began puberty, the ratio of lean and fat tissue... |
Can a minor run a business for 18+ such as a casino in the US? | There's not a general rule against it, but there are lots of specific rules that make it difficult. For instance, there's no particular reason a fifteen-year-old couldn't be the owner of a convenience store that sells beer , but she wouldn't be allowed to personally sell alcohol until she turned 18; she'd have to have ... |
What happens when the "Daily Reddit Gold" bar reaches 100%? | Everyone with one karma point more than you gets a delivery of whores, some coke, and bag of cash. ", 'The daily reddit gold goal has been reached. This was too short, so I had to make it longerThis question asks for a straightforward answer. ELI5 is for explaining complex concepts, so I removed your question. This wou... |
What's going on with Australia's prime minister? How can he just be removed from office? Who is trying to remove him? Why are they doing this? | Australia is a Parliamentary system. This means that the leader isn't chosen directly by the people. The Parliament is elected by the people, and the Prime Minister is then the leader of, normally, the largest party in the lower house . Because the leader is chosen by Members of Parliament, MPs can change their leader ... |
How the map on 'Voyager gold record' works? | The map works by identifying pulsars by their frequency of pulse. Pulsars are kind of weird and easy to identify, so they make good landmarks. If you sit at the sun, then those pulsars with their corresponding distances will all be at the correct angle. You can do the same thing here on earth with a topo map and a comp... |
How does pointing car keys at your head extend the range? | Its actually because your head is basically a big ball of water and acts like an antenna. You can get the exact same efect using a big jug of water. [Watch the experiment here] |
How are tower cranes built? | Literally by other cranes. But ALSO they can build themselves once they get started. [Check this video out!] |
How does life insurance work and how do insurance agencies make money off of them? | Youre paying every month or whatever just in case you die and then your family or whatever will get paid. If you dont die, they will be keeping the money you gave themThey run the odds and collect more in premiums than they pay out. The house always wins.Especially with term life insurance. If you don't die in the time... |
What is the mechanism in antidepressants (most all SSRIs, SNRIs, and tricyclics warn against drinking) that make them dangerous to drink alcohol with? | The interaction with SSRIs and SNRIs is pretty small IME. I believe they put it on there because alcohol also enhances serotonergic neurotransmission to a small degree. With tricyclics, which I believe are sedating, it's simply because you don't want to accidentally cause to much sedation as that can, in the worst case... |
How did the moon get its orbit? | The angle of the impact was not perpendicular to the impact point. The velocities involved were likely tremendous - stuff probably got thrown all over the solar system from the impact.The impact itself is what gave the particles that eventually formed the moon their speed. The energy released was so huge that many part... |
Why are the voices of males deeper than females? | Testosterone when males hit puberty has an effect on the vocal cords which results in a deeper voice. As for some sort of evolutionary benefit, I'm not sure. |
Why is staring at the sun bad for you? From a scientific standpoint | Your skin does a lot of work blocking out dangerous UV light. UV is dangerous because it's what's called ionizing radiation. Without diving into a different ELI5, the short version is that UV light has enough energy to knock electrons off your atoms, which can really jack up the chemical bonds. If that chemical bond ha... |
What happens to skin cells when skin turns red | Your skin will turn red when struck, rubbed, when you blush, or in certain temperature conditions because the tiny blood vessels under your skin are expanding and allowing more blood to flow. Nothing directly happens to your skin as a result of being reddened from excess blood flow. However, if the cause of the excess ... |
How to remove an arrest record from google searches | Google is very hesitant to remove things from their search, it pretty much doesn't. You [have to contact the people who own the website] that has your information posted and see of they will take it down. |
gear ratios/chain ring sizes on bicycles? | Gear ratio is defined as the ratio between the speed of the input gear and the speed of the output gear. On a bicycle, your input gear is your chain ring, because it's connected to your crankarms . The output gear is the gear that's connected to your back wheel . Unlike a car, nearly every gear on a bicycle is "overdri... |
Why is the sense of smell so strongly associated with memories? | Smell is associated with memories, especially when those memories are tied to emotion, partly due to the anatomy of the brain. Neurons from your nose send information regarding smell to the olfactory bulb in the brain. From the olfactory bulb, many neurons project to the olfactory cortex and other higher-order areas of... |
why during the take-off of flights do I need to turn off any electric devices I have and just how serious is it if I do not? | A very short answer would be better safe than sorry. All wireless devices emit radio waves, and the navigation and flight control computers on airplanes are designed to sense even very weak signals coming from far away. Radio waves with just the right power and frequency can in theory introduce errors in computing equi... |
Why if I have my ceiling fan light on for a while does it stay glowing a dim green for a few minutes after it has been turned off? | Many LED and compact florescent lights display something called afterglow. For florescent light it it due to the phosphorus that remains energized a few minutes after the power is off. this is because the lights work by electrifying mercury gas that gives off ultraviolet light . The phosphorus paint then absorbs the UV... |
We eat solids, drink liquids, but can we use gas as a food source? | TL;DR: You might be able to get a small amount of chemical energy from inhaling alcohol. This is a more interesting question than most are giving it credit for. The macromolecules from which we get energy are in solid or liquid form. Is there any way to obtain chemical energy through a gas? Large organic molecules are ... |
Why do sites like Youtube and Facebook (but especially Youtube) continuously modify their interface with new skin, color, and features, despite the negative reception of their userbase? | Because everybody hates change. Week 1-4 of a UI overhaul, everyone hates it. It's all different and you have to find the stuff you want again. Once you figure it out you stop caring and usually whatever new/optimized feature gets a jump in usage, which is why they made a new UI in the first place. |
How do those rubber pads in urinals promote hygiene? | I believe there were a bunch of studies done that indicate that if there's something in a urinal, men are more likely to aim at it. Even if it serves no hygienic purpose, it at least keeps it in the urinal . |
Why was the decision made to split Korea in the first place? | Decision isn't quite the right word. After WWII the Soviets held the northern part of Korea, and the United States the south. They wanted Korea to be remade suiting their own interests, which were in conflict. The Soviet north made a Soviet-styled North Korea. The United States left a Western-style democracy that would... |
Why are calculators the only common solar powered gadgets? | A small solar panel isn't the most efficient or reliable energy source, so for a portable device to be able to be solar powered, it has to consume very little power and suffer no ill effects if the source is suddenly cut off. There simply aren't a lot of devices that fulfill both of these criteria. As it happens, schoo... |
Why I get so many nose bleeds in the winter and other people don't | Cold air is dry air. You may be able to make the nosebleeds stop by getting a humidifier for your home, or at least for your bedroom.You aren't alone! I don't feel like it's really winter until I wake up with a bloody pillowcase :/", 'Shower more. Seriously. By regularly getting nice hot steam and moisture up in there,... |
How does political instability in the Middle East affect oil prices? | A lot of oil comes from the Middle East. Political instability might lead to chaos on the ground, that could result in less of it being produced in the future. You're probably familiar with the idea that prices are determined by supply and demand. If just as many people want something, and there's suddenly less of it, ... |
Why do doctors tell you to finish the whole bottle of antibiotics and what happens if you don't finish them? | Essentially, the antibiotics kill the microbes that are making you sick. The meds make you feel better as more microbes are killed, so if you stop taking them after you feel better the more resistant ones are still alive and will reproduce. So these will be harder to kill with the remaining meds. If you keep doing this... |
How did germophobes deal with germs pre-1800s? | You can't be phobic of something you're not even aware of in the same way that no one at that time had anxiety around flying in an airplane. There were "neat freaks," but they wouldn't have thought in terms of germs or disease, just dirt and cleanliness.The more medical term is mysophobia, the fear of uncleanliness. Be... |
How are "scratch n' sniff" stickers made? | There are tiny capsules filled with scented chemicals on the surface of any sort of "scratch n\' sniff" surface. When you scratch them with your finger, you rupture some of them and release the smell. |
How would our current immune systems be affected if we were to travel 200 years back in time ? | Most of the vaccine's you've received would still work, but you'd be exposed to things like cholera, polio, and a whole host of parasites that would fuck you up good. Your body definitely wouldn't somehow be better suited to fighting off illness purely by virtue of the fact that you were born in a different century.I i... |
Can someone explain to me how the stock market works? (LI5) | Your lemonade stand decides to go public, so you take its worth, divide it into a certain amount of stocks and then start selling them to people. . When you do well people want your stocks, so they buy them, but people that already own it want more money, so they sell for higher then $1, stock price goes up. Reverse ha... |
- Why does your home temperature of 70 degrees in the summer feel a lot warmer in the winter when it is the same temperature? | Humidity plays a role in this, the 70 degree weather in the summer will often times have more water vapor in the air causing it to feel warmer than it actually is, kind of like the opposite of wind chill in the winter where the wind makes it feel colder than it actually is. In the winter the air is more dry and therefo... |
Why do weaker foods taste like nothing after eating stronger foods? | Think of it like this look into a bright light then look into a darkened room. You cant see anything because your visual senses were overloaded by the bright light. Same concept with taste. Give your tastebuds a chance to re set and you'll taste the milk chocolate just fine. |
How does Reactive Armor work and what makes it work? | Modern anti-armor warheads use shaped charges. These shaped charges are designed to produce a "knife" or "lance" of superheated plasma capable of cutting through very thick armor. Reactive armor is essentially an explosive package, and many of these packages cover the armor of the tank. When struck by the warhead, the ... |
Why do we only have one car horn(klaxon) sound? | We don't. Cars have a variety of horns, and very few of them actually sound like a klaxon. "Awoooga" is not a common car horn sound. |
what made people believe the Marjorana Fermion possible? | While we wait for an answer to your question, could you give me an ELI5 on what Marjorana fermion is? |
What is silica gel? | Silica gel is what is known as a desiccant, it is used to control humidity levels in products so they don't spoil or start to smell. Basically, it absorbs water in the air.In addition to the answer from /u/PM_ME_UR_WEDGES, silica xerogel is the same thing, just that it's been completely dried. They're the same thing, c... |
the difference between a Quasar and a Black Hole. Also, are quasars galaxies? | Quasars and Blazars are a side effect of supermassive black holes. These black holes suck in matter at an incredibly high rate of speed. Since black holes also spin, this matter also gets spun and twisted. The incoming matter gets sucked in so fast that it collides with other incoming matter and becomes extremely hot a... |
What is with this whole Luigi thing since Mario kart 8 released? | It's his facial expression in the game. If you pass him, he looks at you like a serial killer. |
What is Down Syndrome? | Down Syndrome is a chromosomal condition. Meaning that the problem arises from our chromosomes. Humans normally have 23 pairs of chromosomes, people with down syndrome have either a complete copy or partial copy of the 21st chromosome. This results in the physical deformities and the mental retardation in those with do... |
How is my iPhone able to make an SOS call with no signal? | [911 calls are sent via any wireless network.] If your carrier doesn't have service, but another carrier does, you can still use 911 off the other carrier's tower. |
Did we start out with black skin and then it changed to white/yellow et al.? | By the time we get to Homo Sapiens, yes. Definitely. Way earlier in the evolution of man, like several millions of years, when our distant ancestors first became bipedal, walking on two legs, they were in forests which limited sun exposure. Melanin, skin pigment, showed up only about one to two million years ago when t... |
Why do many redditors share gifs using _URL_1_, when it takes forever to load them and is clearly inferior to _URL_0_? | Pretty much the only reason is that Imgur has a very small file size limit for GIFs. Minus either doesn't have a limit or it's big enough that I've never had to worry about it before. Also I've never had a problem with loading Minus GIFs before but I think it must have something to do with my location. On a similar not... |
Why is the weather usually pleasant after a thunderstorm? | Thunderstorms generally occur when a cold front moves in a warm area. The way fronts work is that the colder ones shove the warm air mass upwards since cold air is more dense. In this same way, the warm air has more energy than the cold does, so when the cold from moves in, the air is calmer. Often during the summertim... |
what's the difference between controlling the volume on the PC and controlling the volume on its speakers? | The difference is the signal to noise ratio you end up with. Keeping the PC volume low and then cranking up the speaker is like recording someone speaking softly outside and then amplifying it: all the background noise gets amplified too. Keeping the PC volume high and turning down the speaker is like recording someone... |
Why, when I get a zit on my nasal septum, does it hurt so much? | Because your pain receptors are highly concentrated there, since it's an important part of your body. More pain receptors = more pain. |
Why do most men become instantly un-horny after they ejaculate? | Read this on another thread like this. This is because the penis is shaped to scoop other guys sperm out. Once a guy finishes, he needs to stop right away so that he doesn't scrape his own sperm out.Orgasms in men release a hormone called prolactin which shuts down the sexy parts of your brain for a whileIt is known as... |
Why does everything seemingly become 100x funnier when you mustn't laugh? | Juxtaposition has a big part, you ate in a quiet place, say a church that people are meant to take super seriously and suddenly something so unexpected and out of place happens, while everyone is meant to be sombre. There's such a clash between what society dictates and the situation that it amplifies the abserdity. I ... |
- Declaring bankruptcy in Canada | I found [this link] explaining several pre-bankruptcy options that debtors have in Canada. You might want to check them out before you go BK. As always, it's usually a wise idea to talk to a lawyer before initiating any of these procedures. |
Why is taking the life of another person the source of what satisfies a serial killer or murderer? | It's primal almost sexual. The feeling of ending a person's existence by your hand makes you feel like a god. Knowing that with a slash of a knife, or squeeze of a trigger, or twist of the neck, you could change the course of human history. This person could've changed the world for the better, or worse, and now no one... |
Why do we have creases on our fingers, and do they have a primary use? | those creases are where the joints are, they're basically wrinkles from excessive use. can that guys finger bend where he should have a crease? |
Since it takes hardwood trees decades to become large enough to use for lumber, how do we ensure that we are keeping the hardwood lumber industry sustainable? | There are giant areas of the world covered in forest for lumber. If trees take 50 years to grow big enough you need to make sure you have 50 times the area for forests as you need to cut down each year. Most of this area is unsuitable as farmland anyway. Trees are very good at growing in tough terrain so you can for ex... |
Why does Google's search engine do such an excellent job of correcting typos/spelling mistakes but Google Chrome's spell checker is horrible at recognizing seemingly obvious typos? | First of all, they're completely different algorithms. Google search relies on user input to suggest correct spellings. So people have searched posive, got it wrong, then typed positive. The algorithm has now linked the two words, and from then on it makes the suggestion . Chome spell checker is a bit different, it jus... |
Why does a Pandora channel drift farther away from its origin as time passes? | The more you thumbs up, the wider the list of "acceptable music" becomes. It's important to thumbs up sparingly, not with every song you like. Only thumbs up something if its a band that you rarely hear on the channel and want to hear more of. Example: take the band Panic at the Disco. Their early music was alternative... |
Why is it that teeth come in symmetrical pairs but aren't all the same shape? | They serve different purposes. Herbivores such as cattle or deer or elephants have relatively congruous teeth because their teeth only have one job, crushing leaves and roots and other plant matter. Carnivores like cats and wolves and sharks have relatively congrous teeth because their teeth only have one job, tear apa... |
How does Google Analytics track and serve me targeted ads, even though I use a VPN and delete all my cookies? | There is a process called fingerprinting, where a site gathers a lot of data on your computer's environment, rather than your internet connection. A web site can detect your screen resolution, browser type, processor type, windows version. With something called WebGL, used for putting 3D graphics directly into a web pa... |
How much does a train engineer control the train? | generally speaking the driver of a train controls the speed and brakes and the horn. They don't steer ! They may also control door opening, internal lights, have some control over engines/pantographs, information displays. In some special circumstances drivers press a button to start when a train departs and the train ... |
How do I properly eat a Gyro? | Well, ideally you're drunk, it's 3 AM and you're standing on the street. So it shouldn't really matter.Open your mouth. Take a bite of the gyro. Chew, chew, chew. Swallow. |
What are the physics behind this gif? | I don't know the *precise* physics, but I know how he did it. The inner cup is slightly wet, which allows it to spin smoothly. Then when he blows on it, the air goes down the side of the cup, into the gap between the two. The air pressure blows the inner cup up and out. The spin actually makes it more stable . After th... |
How do pop musicians score a chart topping hit on the release of their first album, and go from nobodies to ubiquitous in a matter of weeks? | Studio with money, industry connections and payola. The music is just the particular product they sell, but it's just business. To me, as an art form, that type of product lacks soul. I stopped buying into it after high school. |
Who do these algae take the shape of the bottom of the pool? | First, let's assume you're not seeing a reflection of some overhead tiles on the surface, and further assume the algae isn't a little bit transparent and you're actually seeing the bottom lines through it. If both of these things are the case, either they grew anchored to the bottom of the pool, and then floated up, or... |
How to ankle monitors work? | 1. If they were to leave the designated area for a certain amount of time the monitor would signal the police that they are no longer within the specified zone. 2. While they are made to be un removable there are people that do risk removing with heavy equipment which is foolish because once its removed it also signals... |
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