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how does photons work? | While this requires a lot of explanation, it's a bit of a long story. Photons are basically a particle which is massless, which means it has no mass, hence why it can travel as fast as it can. However, that doesn't mean we can't interact with it. The problem is that photons are always moving. Fast. Really fast. As fast... |
Why do I seem to enjoy my music more when it's louder? | Increasing the volume removes the background noise, so the only thing you hear is the music. Nothing to distract your enjoyment and no sounds from your surrounding add to your music.My guess, alongside with what others have stated, is that your brain will concentrate more on the louder music. Your brain devotes much of... |
How does film finance work? | Sort of like investing in a start up. Agents and marketers present a desirable package of talent: writer, actors, directors to the studios. Who then secure funding via their own accounts or by getting loans from banks. Then, the studio hires a production company or makes the film in house. They release the film to exhi... |
What happens if the child of a US president wants to hang out with their friends? | [There won’t be a hand held, a first kiss or a high school dance that the Secret Service won’t attend]They hang out with their friends. They're just protected by secret service. I 'd go to parties at Yale under Bush and Barbara would go out like any other college student. Detail would follow, stay outside the party for... |
Why is it that when you turn on a heater and suck in the air coming out of it, it feels dry? | Hot air has a higher capacity for water. So if you heat up a volume of air the *relative* humidity goes down even though the absolute amount of water stays the same. Therefore the warm air can take up more moisture and that can come from your skin and other tissues, so you feel that it's drying you.Hot air is less dens... |
Who's clashing with whom in Egypt, what are the biggest issues, and how bad is it likely to be? | Many will disagree, but IMO the elite thought they could do better than Mubarak. They are demonstrably wrong. The Muslim Brotherhood , have been working for nearly a century against more secular rule, and effectively represents a majority of the populace . They were great as an oppressed majority, but they can't handle... |
How come cats and dogs don't pet each other? | My cats "pet" each other all the time. They are always licking each other. It's not as if they have hands that are suited for petting. While they might only do it to keep each other clean, it sure seems as if they are showing affection sometimes. And when I'm petting them, they'll lick me back, even though I clearly do... |
Why did the Equal Pay Act fail? | I think you mean the Paycheck Fairness Act. That's the bill in congress now. The Equal Pay Act was passed successfully in 1963. Opponents of the Paycheck Fairness Act point out that the premise behind it is flawed because it doesn't account for *actually performing the same job* correcting for that shows women make 96%... |
why do household electronic appliance settings go OFF, HI, LO? | There are two cases for this, one using electronic devices, and one using gas powered , and they both share the same reason as to why it's beneficial to start with "high" in some cases. You can do a home experiment with a dimmer switch and incandescent light bulb that will explain it. If you have a dimmer switch set to... |
Are welfare services a state responsibility? | I would give 2 reasons: 1) people who are desperate and not provisioned for end up going into a life of crime and banditry. Of course, the alternative is starving to death and they don't have anything to lose now. This is bad for society as a whole. 2) all welfare spent helps grow the economy. Since welfare payments ar... |
Does the immune system only protect against foreign agents like virus or bacteria, or is it also beneficial to fight diseases such as cancer, diabetes, high blood pressure etc.? | Yes. You are developing potentially cancerous cells all the time and your immune system is destroying them all the time, too. Cancer cells are your own cells, mutated, and your immune system usually recognizes them as diseased and kills them off. Developing cancer can sometimes be worsened by a weakened immune system t... |
Why is the basic unit in angular measurement the right angle? | The "basic unit" in angular measurement is either the degree or the radian. It is not "the right angle." A right angle is just an angle that has certain special properties . |
What causes the noise a flame makes when blowing in the wind? | When something burns it isn't actually the solid or liquid that burns. It first off gases or evaporates creating a gas that is flammable. This gas however is too rich to burn immediately it rises and mixes with air until it makes a mix that can burn. If you look at a log for example you will see a very small space betw... |
Why is it harder for women to lose weight than it is men. | Men have a higher basal metabolism, we're taller and have more muscles. In addition men look like they're gaining and losing weight faster since most of our fat is on the belly while women have it spread out on some plump and nice places as well. |
- how do chameleons change their colors? | Firstly, i just want to say that it's a common misconception that they do this to camouflage themselves against a background. In fact, chameleons mostly change color to regulate their temperatures or to signal their intentions to other chameleons. Now to the actual ELI5:The outermost layer of a chameleons skin is trans... |
Why does tan/sunburnt skin appear lighter briefly after pressing down on it? | The skin is red due to increased blood flow near the surface. By pressing down on the skin you force blood out of the thin capillaries, similar to squeezing a sponge. In doing so you reduce the visible blood and change the color. |
Why does it require more energy to not care what people think vs caring? | This one really depends on what kind of person you are in the first place. For example, I find it much more draining to care what people think than I do to just ignore them.It's likely that you're just an empathetic person, meaning you are prone to caring about others and about other's perceptions of you. There really ... |
a Library in computer terms | Libraries are various pieces of code someone else has already written. They leave an API to allow others to interface with that code. This allows programmers to focus on their task so they don't have to re-implement the same algorithms someone else has made over and over. Also, it allows access to parts of code that ge... |
why the turn signals of 2 cars will always sync at one point. | Those metronomes are on a shifting table, that's why they sync up. For cars, I can give you math to show why they might sync up, and why they may never sync up. For simplicity, say car A blinks every 2s, and car B blinks every 3s. 2 * 3 = 6, so they will converge at 6s. Now cars blink in the decimal places, but you can... |
Why was Half Life 3 never created/released? | According to numerous interviews with Valve over the years, the company has a very "flat" structure. In most companies, you have employees reporting to a manager, a manager reporting to a director, a director reporting to a VP, a VP reporting to a C-level executive, the C-level execs reporting to a president , and the ... |
Why is symmetry so prevalent in nature and animals etc? | Why store two completely separate sets of instructions when you can just build the same body part backwards? For complex animals it also helps with balance and locomotion by keeping their center of mass actually centered. |
Why are carbonated drinks so satisfying, especially when you are really thirsty? | I used to buy simple carbonated water by the case. Then I bought a seltzer bottle . Now I have a Soda Stream. I adore carbonated water. Really cold carbonated water satisfies my thirst like nothing else. I think it's because the bubbles sort of 'sting' the back of my palate when drinking, it's a very specific feeling t... |
How time travel could possibly work? | When you get closer to the speed of light time passes faster for you but for everybody not traveling that fast it would not. You could go on a journey 1 lightyear away at the speed of light and come back to find it nothing like you had left itTime travels slower the faster you go. Time also slows down the more gravity ... |
Why are planets/moons/stars perfectly round? | Quite simply: gravity. Once you get above a certain size, gravity is strong enough that it will even deform an object into a sphere, which minimizes the gravitational potential energy on the object . It isn't perfectly round though. Mountains an valleys produce imperfections in the surface and spin produces a bulge, ma... |
Why is the CDC not allowed to research gun control/gun violence? | They say it's because they believe that CDC should be limited to studying diseases and gun violence isn't a disease. However, they also believe that the results of the study will be used to support more stringent gun control laws, which is probably closer to the real reason. |
Why do (generally) quiet things seem to sound louder at night? | Mostly due to less background noise. Your apartment/house is most likely quieter at midnight compared to an office environment or daily activities surrounding you. There's likely less activity going on at midnight, less cars going by, less people talking, etc. For example, if you're in an office during the day, there a... |
Why are stuffed animals so comforting, especially for children? | Children are inherently social, so they will instinctively seek out things with facial features: eyes, ears, mouths, noses. The feeling of not being alone is calming, especially for infants and toddlers. Fuzzy and furry things are warm, which also provides a sense of comfort and being in a group. Cuddle up with your te... |
What are ultraviolet photographs? How do they "convert" the ultraviolet to seeable wavelengths? | Ultraviolet photographs are photographs that have recorded only ultraviolet light. As for how ultraviolet is 'converted' so we can see it, it doesn't really work like that. Photography works by using a chemical that reacts when light hits it. For example, black and white film photography works by coating celluloid film... |
How are Sitcoms that are taped in front of a live audience taped? How long does it take? | It will vary from show to show, so I will stick to answering specifically for Seinfeld. It was generally filmed in chronological order, but anything filmed off site was filmed in advance and shown to the audience on screens to get the 'laugh track'. Although if they didn't like the audience laugh they would still use c... |
Why does depression cause loss of appetite in some, while being blamed for overeating in others? | There isn't just one chemical or even just one set of chemicals that causes depression. If there were, depression would be very easy to treat. Every depression is different, because it's just a symptom of various things going wrong in a person's brain. |
Why do I need to drink water more often than eat food? | We use water for all sorts of things in our body, food is pretty simple, broken down and used or stored. food can be stored in different forms, water cannot be stored as easily. so we have to replenish more often because we cant store it as easily. |
How is colour added to photos dating from before the time of coloured photos? | Very talented Photoshop users. There is no color in black and white, so you have to add it yourself.Adding colours like paint. There is no way to revive the original colour because there WAS no original colour, the film was only black and white. Many of the colours in re-touched photos are completely wrong and down to ... |
When someone has extreme sleep deprivation, why do they get hallucinations? | By normal function of your cells, your body will accumulate waste products and chemicals which disrupt normal bodily functions. Your body has evolved hundreds of thousands, if not millions, of chemical reactions to deal with these waste products. Some of them are seriously complicated, involving multiple sequential rea... |
What's counter torque and why is it needed to make a helicopter fly? | A helicopter flies by using an engine to spin a primary rotor, but that rotor has inertia so when trying to spin it there is a force pushing back that tries to spin the helicopter body too. Counter torque is provided by the tail rotor and ensures that only the main rotor rotates around the shaft and the body of the hel... |
Why does salt water help heal wounds? | **It acts as a mild antibacterial , allowing your body to focus on repair rather than disinfection.** Cells, including bacteria, cannot manually control their hydration, they depend on the diffusion of water through their membranes . The high salt concentration in the salt water draws out water *out* of the bacteria, l... |
Why is the shadow of my lenses black? | A lense changes the direction of light. A convex lense refracts light so that it gets closer together afterwards. You would use a convex lense to light a fire from sunlight. This is used in glasses where the lense in the human eye cannot contract enough to focus the light effectively onto the retina at the back of the ... |
Why can't Solar Panels be at a 0° (Parallel to the ground) Instead of at an Angle? | The sun is never directly overhead north or south of the tropics, so it'll be less efficient. Panels in North America and Europe should tilt south to get the best exposure angle. There's also the issue of dirt and debris collecting on a flat surface. |
How can loans from small credit unions have much lower interest rates than loans from large international banks? | Credit unions typically don't make a large profit and, for several reasons, they typically have lower operating costs/payroll. Because of this, they can give out lower rates and make less money.International banks report to shareholders who demand certain returns . Consequently, they are in the business of generating l... |
what would happen during a nuclear winter? | First of all, you should know that nuclear winter is not settled science. The thought is that bombs that detonated over cities would cause a firestorm in that city which would lead to a huge amount of soot and ash being sent up into the atmosphere. That soot & ash would partially block sunlight and dramatically cool th... |
how is hacking into driverless cars going to be prevented? | The easiest way to prevent hacking is to secure any access point into the car's information systems. There's three channels through which you could try and hack it - communicate to it wirelessly, communicate to it on a wired connection like a USB port, or physically install or change some components. If your car doesn'... |
Why is it that every time I buy solar landscape lights they only work for a couple of months (even with cleaning the solar panels)? | It's probably not a problem with the solar panels. Many have internal batteries to store the energy from the day and deliver it at night. After many charge/discharge cycles and temperature extremes of hot and cold, the batteries aren't as good anymore. And the batteries they include probably aren't the best. Another po... |
Why are roses so expensive. | The same reason diamonds are: perceived significance or value. Diamonds aren't actually worth much; they're just supercompressed carbon that happens to occur naturally under certain circumstances. People just think they're rare and valuable when they're natural, and cheap when they're man-made, despite being structural... |
What is a snap election, and why doesn't it exist in the US? | Often times in parliamentary systems of government the prime minister or other head of government must have elections every set number of years, just like in the US system, but they also allow for them to call for elections at a time of their choosing prior to the normal time between elections. This is very useful for ... |
Why do we still use USB and not fibre optic for file transfer. My Soundbar uses fibre optic, so it can't be a cost issue. | USB is * cheaper * bidirectional by default * can carry multiple signals at the same time * can be split into multiple USB ports through hubs * has more compact controllers and interfaces And last but not least * can carry power, because it's made of copper wiring which is VERY important for just about any peripheral. ... |
Why is a beautiful view beautiful? | Answer: Much has been written on the subject of esthetics, it's a major branch of philosophy. One good avenue of inquiry is to check our different ideals and attitudes across culture lines, look for universals. Likely a very subjective item. |
Why do we need economic growth and why is it considered bad if an economy does not grow? | Think of it in terms of loaning money to a friend. If your friend is about to start a great new job, you'll happily loan them money. But if your friend is about to lose their job, you'll be much more hesitant because you're worried they won't be able to pay the loan back. When taken across an economy, this means that i... |
How do all those one-way-rental trucks (U-Haul etc) get back to where they came from? | In NZ we get a lot of tourists driving campers from Auckland and flying out of Christchurch. They pay people to drive them back. They generally get paid to drive to Picton and board them on a boat then get bussed back . They are picked up in Wellington by another mob who drive them to Auckland and then get flown back t... |
I assume Turkey's attack on the Syrian government is in violation of international law, if so does that negate our nato obligations when syria, iran, or russia strikes back? | Wait so Turkey are attacking both Assad's regime and the Kurdish rebels? What the hell is their game? _URL_0_", 'I love this question. It's basically, "Explain like I'm 5: international politics and treaty law. |
What is the difference between [i.e. Their roles and responsibilities] (in countries that have both) a president and prime minister? | The Prime Minister runs the country. The President is a more ceremonial role. This is grossly oversimplified, and it may vary from country to country, but in general that sums it up.The Prime Minister heads the government. The government is made up of the legislators whose party wins the most seats or a coalition of sm... |
if the NSA can reach 75% of the internet, then what about the deep web and the crimes that go on there? | First: The NSA may see that someone is asking for child pornography but they don't see *who* is asking. For example because they use TOR. Second: The amount of data the NSA has is so big, that it's simply not worth to investigate every single small crime. They probably only look for terrorism and maybe big distributors... |
How did "state of the art" end up meaning "The latest technology"? | > The origin of the concept of "state of the art" took place in the beginning of the twentieth century.[3] The earliest use of the term "state of the art" documented by the Oxford English Dictionary dates back to 1910, from an engineering manual by Henry Harrison Suplee , an engineering graduate , titled Gas Turbine: p... |
why does our eyesight get blurry after playing a rhythm game? | It could be the motion aftereffect. This is an effect of video games, specifically rhythm based games like guitar hero and rockband, where our eyes adapt to the moving stimulus in the game as baseline. When you shift your focus to a stationary object, it will look "wavy" and will probably appear to be going up. This is... |
; How do television channels work in the UK? How does everyone with a TV paying a fee work? | They can't, obviously. Some decades ago, they claimed to have "TV detector vans" which would patrol the streets and could detect if a TV was switched on in any home, but that was just a ruse to scare people into paying up. However, they do know which properties have valid TV licences and which don't. If you suddenly st... |
Please explain what happens with a fly in a car when it crashes. (When the fly is flying inside the car) | The cage that is your car suddenly decelerates. You, your doggy, and lunch that was laying on the front seat continue to travel forward at 135 Km/h and get to meet the windshield inasfar as you weren't buckled up in which case the buckle yanks you painfully and you'll probably break a few ribs. You, your doggy and lunc... |
Why does sound pitch down in tone when speeding past you (front to back)? | It's the Doppler Effect. Basically when sound source is moving toward you, the sound waves get bunched up, making the sound higher pitched. When the source is moving away from you, the sound waves get stretched out, making it sound lower pitched.Doppler effect - the sounds waves will compress slightly as the vehicle tr... |
Do companies like coke change their recipes without telling anyone? | I'm not an expert in this area, but I heard once that coke cans have the same recipe all over the world, coming from a factory in the USA, and coke bottles are produced locally, with things like locally sourced water. Maybe it has something to do with that?", 'You enjoying coke more previously is more to do with you, I... |
How does power affect speakers in regards to volume? | When you change the power you're just rotating something in the circuit that changes the amplitude of the wave that the circuit uses. |
Why do small birds hop instead of walking like larger birds? | Hopping is the gait used by birds that mostly jump from branch to branch. Walking is the gait used by birds that spend plenty of time on the ground. _URL_0_ |
Why are some types of animals just naturally aggressive, while others are docile? | Animals have the same "fight of flight" response as us and they evolved by surviving. The fight of flight response is how you body evolved to deal with danger and stay alive. Obviously not all animals will do both in that moment. Prey animals like a dear have few offensive options, and their species has instead evolved... |
Why is "Jason" used almost exclusively as a given name, when most other names with a "-son" suffix are surnames? | The name Jason comes from the ancient Greek word meaning "healer". It is not connected to the English suffix "son", meaning "son of". It's nothing more than coincidence that it's written and pronounced the same way. |
What accounts for the price difference and quality of gas from different stations? (chevron or shell stations seem to be a bit pricier when compared to say 7/11 or am/pm) | supermarkets *tend* to subsidize their petrol. a little. because they know that if you come in for gas, you're more likely to head into the store to pick up some stuff, and if you came IN for stuff, you're more likely to buy gas on the way out. then you get the BIG refiner owned and operated sites. BP. ESSO. TEXACO. th... |
Why did predatory lizards not evolve binocular vision like mammals? | As a general rule predators have eyes at the front and prey species have eyes at the sides. Most lizards are both predator and prey. If the risk of being eaten outweighs the advantages of binocular vision, there is no advantage in binocular vision.Evolution doesn't have a goal, or a pinnacle to aim for. Even if it did,... |
Why does coffee make me so jittery when served black but has little effect when served with cream and sugar? | It may well be that that is your expectation and so you feel that way. There's no real reason for this to happen.A variation on the placebo effect would be my guessThe fat in dairy products slows down the absorption rate of the caffeine.Coffee /caffeine directly affects the central nervous system. When the CNS becomes ... |
Why do you always see the remains of truck tires on the highway? | Highway trucks tend to do a ridiculous amount of mileage in a year. Upwards of 80,000 miles even. Before going into any more detail its just good to know that the truck is the tractor and the trailer is just the trailer. Now everyday before the driver gets onto the road he/she must to a pre trip inspection. The tractor... |
Why can't we eat other people? | Any pathogen in your meal is going to be something that's already perfectly adapted to living in human beings. This isn't really the case with, say, fish. That's the main problem. Your risk isn't terribly high, but somewhat higher than it would be eating something else. |
What happens when I adjust a VCR's tracking? | Curse_of_kintave is wrong. Well, he's right about the signal being encoded diagonally on the tape and being read/written with heads in a spinning drum that is tilted, effectively making the heads tracking the diagonal signal on the tape. It's a clever trick to encode way more signal on a relatively slow moving tape, he... |
Why linux-based OS are supposedly less susceptible to virii than Windows? | two important reasons First of all there are just fewer viruses are programmed that target Linux. this isn't so much a feature of Linux itself being more secure, just a consequence of it being less attractive for criminals to try and attack. There are more Windows systems in the world than Linux systems. Its a bigger t... |
Why is it so easy to find a comfortable position in bed during morning but hard at night? | I was going to say because you've already gotten a full night of sleep. But she went all sciency", 'When you're asleep your body releases chemicals in your body to keep yourself still and asleep. When you wake up by accident a few hours before your alarm, it's easy to go back to sleep because you body still has all the... |
The Troubles, or the Northern Ireland Conflict | The 1960s saw the beginnings of a civil rights movement among Catholics in Northern Ireland who sought an end to discrimination they faced at the hands of the British government. The main thing the civil rights campaigners were looking for was the idea of '1 man, 1 vote'. This is important as Protestant business owners... |
Why is the name Jesus fairly common in Latin America but uncommon in English-speaking countries? | It has to do with translation. The English version of Jesus is Joshua. So if you're named Josh or Joshua, that's the same as being named Jesus.The guy in the bible's name is יֵשׁוּעַ we did a thing where if you want to write that in english to be the god guy you write it as Jesus, if you want to write and say it as you... |
How does your body know to reject only a specific food when you're sick? | > How did my body perfectly separate the fish from everything else I ate at the same time? It's really not supposed to do that. |
What exactly is a Bonsai tree and how do they get them so tiny? | It's a regular tree, but put in a small pot, and trimmed consistently in such a way as to keep it under a certain size. There are techniques to get it to grow into the shape you want, but basically it's just a regular tree or cutting that's been restricted in size.Bonsai trees are regular trees and shrubs which have be... |
Developed nation, undeveloped nation, first world, third world: what information do these terms convey, and how do We use them correctly? | TECHNICALLY the first world are developed capitalist nations that were vaguely alligned with the US after ww2, basically anyone on the US side in the cold war, and the 2nd world are all those nations alligned with the USSR after ww2 i.e. communist nations. The 3rd world is anyone who remained neutral. Due to the nature... |
What is the purpose of the human orgasm beyond reproduction? | There is no purpose beyond reproduction. Orgasms feel good, and that makes people want to have sex. Wanting to have sex makes people have more sex. And that makes people have more kids . Which means that more of the next generation consists of people who also enjoy orgasms. If a creature existed that didn't enjoy sex, ... |
Why do you have to pay penalities for not having health insurance that is not wanted nor needed? | It incentives people to buy into health insurance when they are healthy. The more people that buy into health insurances the more the cost of premium is driven down. The hope is that if everyone has health insurance then it will be cheap for people that do need it. Then one day when you need your health insurance and y... |
Why, when I fall asleep with my socks on, does my foot hair hurt to move in the morning? | This probably won't be like you're 5 but I'll try Your body hairs have their own little [muscles]. It is possible that keeping your socks on all night leaves these muscles "strained"--different than their normal resting length--which causes discomfort by morning. disclaimer: this is speculation based on 1 year of medic... |
Why the supply shortage of PC memory? | demand has gone up dramatically. in last decade, there's been exploding increase in cloud computing, cryptocurrency, IOT, realtime services. all requiring copious amounts of computing power as well as storage. in previous years, suppliers sold extra inventory to cover demand. there's no more overstock inventory. prices... |
Why do explosions, more specifically huge gnarly fireballs, produce the mushroom cloud shape? | The column rising up is caused by air convection. It's really hot there so the air rises up. The air in the center is hotter than at the edge of the column, so it moves faster. It also wants to spread out so pushes out over the top of the column, forcing it to curl outwards into a mushroom shape. [Here's an article on ... |
what happens to everyone in Federal prison for Marijuana felonies if / when Weed becomes legal for recreational use? | probably given early release. at least the lower level non violent ones. It was still illegal at the time they were convicted, so the convictions will still stand. But i doubt the govt will want to waste money keeping them in.No. It was still illegal at the time they were caught performing the act. Whether or not it's ... |
Why do my tooth filings sting when I bite aluminum and other metals? | Putting metal in your mouth creates a rudimentary battery, it sends light electrical current through your mouth setting off the nerve endings in your teeth and obviously fillings conduct better than plain teeth so the feeling in fillings is strongerI think the real question here is, why are you chewing on metal?', "You... |
Why do water bottles have expiration dates on them? | It's the expiration date, generally, for the container the water's in, not the water itself. Leaching and whatnot. |
why are birds and butterflies so brightly colored and patterned, with blues and greens and reds, but not any mammals? | There are two ways to answer this question; proximate and ultimate. The proximate answer is that mammals lack the genes to make most kinds of structural pigments. Many of the really bright, iridescent colors of animals are structural. Mammals are generally limited in the kinds of pigments they have available, and very ... |
Why Catholics so anti birth control | They want large families to further spread the reach of catholicism. Same with many other religions. Bigger families = more followers = more control = more powerTo Catholics, sex should only be about procreation. Not for "having fun. " |
why do some things smell exactly like they taste, whilst others do not? | First: Taste consists of five individual tastes: Sweet, sour, salty, bitterness and "umami" . Second: Smell is different in that it senses way more than 5 different molecules. Third: Both senses are affected by other senses. To prove this statement see this publication: _URL_0_ They essentially colored white wine red a... |
So Boehner's Debt Ceiling Bill Has a Balanced Budget Amendment... What's So Bad About That? | I'll do my best to keep this politically neutral. The arguments against are as follows: - There is a school of economic thought that says the best way out of a recession or an economic slowdown is government spending. The government spends money on roads and infrastructure, education and so forth. In the short term, th... |
How do animals know they could camoflauge themselves within their environment? | They don’t, they don’t know they exist, they just have instincts: impulses that evolved as naturally as their camouflaged flesh did. Cuttlefish have impulses to hide in the sand and to change their skin colour and patterns to match their surroundings, but they don’t ‘think’ about doing it, it just comes as naturally as... |
Why do birds come back after they've wintered in the south? | They come back for the same reason they went south in the first place, the biological advantage of living in a comfortable temperature. In the winter they go south to avoid the harsh cold and in the summer they fly back north to avoid the intense heat. |
why does putting a wooden spoon over a pot of boiling, foaming pasta get rid of the foam? | Steam condenses on the surface of the spoon and drips back into the pot, breaking the bubbles before it can foam up too far. |
At recycling sorting facilities, how are tiny objects such as shredded paper sorted? | They use pretty advanced machines with different technologies like optical detection, magnets, air brushes, centrifuges or even chemical methods to sort different materials. Plastics for example can be separated by a optical spectral analysis, as the material can be identified by a difference in the spectrum of reflect... |
Why does your arm go "dead" if you sleep on it? | Don't listen to anyone who says you cut off the circulation. What's really happening is that you 've compressed a nerve, usually where it passes close to a bone What happens is that the brain stops receiving a signal from that nerve, so starts to ignore it. When you wake up and try to move the limb, it takes a little b... |
The tree falling in the forest.. | It is a demonstration of a question that can NEVER be answered. If we extend 'nobody is around to hear it' to mean 'nobody listens to it in any way' , then there is no way that we can ever determine whether a tree makes a sound or not unless we observe it, and then we are only observing it while it is in a state of 'be... |
Why does sunscreen go on completely white but if you rub your skin a couple minutes later it is in completely black clumps? | That's your skin coming off. Try exfoliating some and then try it. When skin is pulled off and balled up and mixed with your skins natural oil it turns dark. Most noticably if you have dark skin or are in the sun often. |
how do your local, run of mill drug dealers make any profit from the drugs they deal? | They buy them for a certain price from a bigger dealer and then sell them to customers for a higher price. The difference in the two prices is their profit.According to Freakonomics they don't make hardly any money at all. See [here]: > A foot soldier had plenty in common with a McDonald’s burger flipper or a Wal-Mart ... |
How did lower framerates become associated with higher quality? | The issue is more about motion interpolation on TVs that really bothers me. Mostly because it makes me feel like I'm on the set while they are shooting rather than allowing me enough "distance" from the material to feel immersed._URL_0_ |
Why do we call Napoleon by his first name while other military leaders like George Washington or Erwin Rommel are referred to by their first names? | Napoleon styled himself as Napoleon I when he was Emperor of the French. Which is also why his son called himself Napoleon II and why his nephew called himself Napoleon III. Napoleon saw himself as closer to royalty than to a military leader. We don't refer to kings and queens by their surnames, we use their first name... |
Why the USA has such high rape rate beign a developed country? | Getting accurate crime statistics is difficult, and comparing statistics between countries is even more difficult. Rape is probably one of the most difficult comparisons to make, because of the massive cultural differences in how it's defined by the criminal laws as well as how comfortable victims are reporting it and ... |
How can you eat the same thing for breakfast every day and not get sick of it, but this doesn't apply to lunch or dinner? | Can you? I certainly do not have the same breakfast everyday without getting sick of it. What breakfast do you eat every day?The purpose of various meals comes from a time when physical labor was the norm. Breakfast was an easy to prepare high energy meal that can be eaten quickly before you go off to toil in the field... |
How can hair color be yellow, red, white but not green, blue or purple naturally? | Melanin pigments are what give our hair color and they fall in the black/brown/red spectrum.It all has to do with Melanins yellow black brown are all colors that the body can make while white is the absents of a pigment and grey is just a little pigment . The reason we don't have other colored hair is our bodies don't ... |
How do supermarkets decide what items go on sale and when? | They follow a calendar, supply & demand. Harvest time produce goes on special pies, turkeys go on sale for the holidays, eggs go on sale for Halloween, beers go on sale all the time for picnics, New Years, etc. |
why aren't traffic signs and lanes around the world universally the same? | Two reasons: 1). They were all developed individually and there is little incentive to go uniform. And if there was, who's would you adopt? Any attempt would likely be ignored by the US anyhow. 2). There are going to be differences anyhow due to things like different road conditions and localization. Counties Luke to c... |
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