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How do birds detect that there's bread scattered around my garden, and that the nut feeder hidden out of view is full? | Birds care about food a great deal. It's their equivalent of profession to find food. If you provide food for birds often they probably take notice of this fact rather than the individual feedings. Therefore they know to check regularly whether there is food and indeed don't know beforehand if there is. Presumably they... |
How do animals recognize and remember humans? Does this form of recognition vary between different species? | The answer to the second question is yes. Some animals will not remember humans because it is not a part they have required in their brains. That being said, those that do remember humans have a number of ways similar to our own senses, but on a more advanced level. There are a lot of different ways animals remember pe... |
How does severe animal allergy work? What from my pet is causing a severe allergic reaction? | People with pet allergies have over-sensitive immune systems. They can react to harmless proteins in the pet's urine, saliva or dander . The symptoms that result are an allergic reaction. The substances that cause allergic reactions are allergens. |
Why did banks need a bailout? | The problem is that our economy relies on banks trading money with each other. Once significant numbers of banks start collapsing, nobody will be willing to do this; you won't lend money to a bank that might not be there tomorrow. And some companies rely on this kind of thing to pay their workers. So if too many banks ... |
What will happen if the Fed raises rates or keeps them at 0%? Why is it so important? | Well, macroeconomics these days is mainly about managing inflation and economic growth, making sure there isn't too much or too little. Interest rates are one of the main factors used to control inflation? How does it work? Say you just had an awesome idea and want to start your own company but you don't have any spare... |
If my parents are not contributing at all to my college education, why does their income still get calculated into my Financial Aid package? | Because the financial aid system is based on the premise that your parents are *supposed to* pay at least a part of your college expenses if they can afford it. Whether or not they do is their choice, and shouldn't have a bearing on how much money the government is going to cover.Because the government has no way of kn... |
Why when I imagine myself doing a simple task do I always fail in my mind? | This happens to me alot, except my mind thinks of things I don't "tell" it to think. It's confusing to explain but imagine that you're trying to think of a flower but your mind will only think of either something completely different or the flower will show before disappearing or turning into something else. Like my mi... |
Colorizing photos, how does it work? Besides just photoshop. | Colors are represented in many different ways. The most familiar scheme might be the RGB triple--- color can be written as a positive linear combination of R, G, B. Another way to represent a color is the HSV triple * Hue corresponds to the type of color . Imagine the typical color wheel you see. * Saturation correspon... |
Why does stroking (many times) my disposable razor over denim/jeans make it sharpen again? | There are three possibilities: 1) The effect is purely psychological. 2) Rubbing it on your jeans is cleaning out little bits of hair, skin and soap that were clogging it. 3) You are stropping it. If a blade is made of good steel, then it will actually retain a sharp edge for quite some time. But because the metal is v... |
Does having different colored eyes affect how much light your eyes filter, thereby affecting how you view the world? | The light goes through the pupil . Light doesn't go through the colored irises.Contrary to the other answers here, the human eye is not perfect and not all of the light goes in through the center of the pupil. An easy experiment can demonstrate this. Take a piece of paper and cut out a hole in it. Now shine a flashligh... |
How the insanely rich manage their accounts and actually spend their money. | This depends on what you define as insanely rich. You would be surprised to learn that insanely rich people have far less money than you think. This sounds weird - but stay with me. People that have become very wealthy have done this by having an equity stake in something that appreciated rapidly. Their wealth is usual... |
Through which ways did heretical/forbidden religions proselytise and/or worship yet stay hidden in pre-modern urban environments? | Well most times people would participate in houses of a fellow member. I am sure you have seen the fish that so many people associate with Jesus/Christianity, that came as a result during a time of human persecution in the Middle East. One person would draw half in the sand with their foot during the conversation, and ... |
Why is Russia a hotbed for HIV transmission. | Contraception usage in Russia is improving, but during the 90s was low, and often abortion was seen as a method of contraception. As a result, HIV spread rapidly, and is continuing to spread . |
Why is the jump from 240p to 360p so extreme, but 360p to 480p is so minor? | Part of this could be that if YouTube defaults a video to 240p, it's because the video was already recorded with a potato . If you record something in 240p, even if you scale it up to 1080p it's still going to look terrible. However, the gains you get from adding pixels are much more noticeable on lower-quality videos.... |
Why do thunderstorms always seem to happen at night and never in the morning? | I'm no weatherman. And they don't always happen at night. But they often do occur late in the day and night time and I believe it has to do with heat buildup that occurs over the course of the day. The sun heats air and land and makes the conditions right for storms. |
What to know when building my pc? | There's an entire subreddit for this! /r/buildapc is a pretty outstanding group. Check it out!", 'I used _URL_0_ to build mine. Very helpful, it does it like a pro. It shows you the compatibility, prices, reviews. ..anything you need to know is there!Make sure the actual case you use is big enough. Some graphics cards ... |
Why do German luxury automobile brands such as Audi/BMW/Mercedes recommend oil changes every 15K+ miles whereas American standard brands like Ford and Chevy still recommend oil changes every 3-5K miles? | Service contracts. BMW used to recommend oil changes every 5000 miles or so, but then the marketing department got involved and offered free oil changes for the first X years, and once the dealers had to pay the cost of the service the interval magically tripled so you needed fewer of them. The effect is that with the ... |
How far away are we from achieving a breakthrough in data compression like Pied Piper's compression algorithm from Silicon Valley? | We already have really really good compression, you're just underwhelmed because you use it so often it isn't special, but we have it. H.264 can stream 4k 60Hz video with a bit rate of just 240 Mbits/second, this seems high until you run the math on what uncompressed video would be. 4k video is 4096x2160 pixels, with 3... |
Why is Ford advertising the Transit (commercial van) so heavily. | Because it is a huge profit maker for Ford. The van is built in Turkey as a passenger van and then shipped to the US. The passenger parts are stripped out and then sent out to dealers as a professional van. The reason for this is bypass a US tariff on professional vans which is not on passenger vans. Originally the Tra... |
How does listening to music use so little charge on a phone, especially compared to other things? | The bulk of your battery usage is your phone's display, and video processing. Watching a video, for example, has bright display, lots of video processing, internet streaming, AND audio. Listening to music, especially with the screen off and in your pocket, just requires streaming and audio, and WAY less of the streamin... |
What is a commonwealth and how is it different from other forms of state government. | Commonwealth nations such as australia and The Bahamas it mostly has to do with the fact our head of state is the Queen or king of the United Kingdom. they appoint a Governer General as the queen or kings representitive. In the US context it is simply a nod to the british rule previously and actually has no baring on t... |
How do Recoilless Rifles work? | When the round is launched, it blows expanding gas out of the back of the tube. This balances the expanding gas that blows out of the front, along with the round. It can't be used in tanks and the like because the back of the tube is literally where the crew sits. It would kill everyone inside. It's also just not neces... |
How do security software companies keep their computer systems safe when researching new computer viruses? | There are two main ways that antivirus companies can protect their systems while researching malware: They can ***sandbox,*** which is the practice of using virtual operating systems running on a computer. This sandbox emulates an entire operating environment: the OS itself, memory, hard drive space, even down to graph... |
Why do companies continue to sell products that have a poor design? | Same reason Nickelback keeps making music people keep buying the shitMost products will be packaged by a seperate business from the manufacturer who specialises in packaging. Provided the packaging keeps the product safe from the rigors of worldwide travel and handling I assume they couldnt give a shit about how much o... |
What are the drawbacks of big companies like google, facebook, amazon tracking our personal data? | you mean besides loss of privacy? Well there's lots. One example is a [Search personalization bubble]. The more a company like google is allowed to gather information on you, the more they try to 'personalize' your search. Sounds great, right? Not so much. Keep in mind that google, love them or hate them, are the beati... |
why are some beards two or more colors? | I would really like to know the answer to this as my beard is black with several red hairs all over. |
After a day of a hard workout, my muscles are sore the next morning, why? | _URL_0_ DOMS, or Delayed-Onset Muscle Soreness. I think it's not completely understood, but the theory is that it's micro-trauma, tiny tears in the muscles, which your body repairs bigger and stronger. Btw keep at it, eventually you'll love the DOMS, and be upset when you don't get it.WHen you work out you are actually... |
Why aren't "Coin Dozer" games that pay out real quarters considered gambling? | It is about the distinction of 'game of chance' vs. 'game of skill'. The coin dozer game you describes is considered a game of skill. What you are doing is paying a fee to get a chance to try to try to win a prize . It isn't gambling because you aren't betting whether or not you'll win, you aren't betting on anything, ... |
When a jet lands, the engines always roar as we decelerate. What's going on? Are they running in reverse or what? | It's important to note that the engines themselves don't actually run in reverse- the thrust is directed somewhat forwards. Here's a good example of a thrust reverser in the deployed position- there are several different configurations that do the same thing; the principle is the same on all of them. _URL_0_", 'Yes. Th... |
If the temperature of a place is determined mostly by the amount of sunlight it receives, how come different places have such varying temperatures at night? | temperature is not determined by sunlight alone. altitude, latitude and weather conditions also have to be considered.> If the temperature of a place is determined mostly by the amount of sunlight it receives, how come different places have such varying temperatures at night? Its not which is your problem Ever notice i... |
Why does water left in bottles start to smell bad after a few days? | It goes off. Water isn't sterile, it has bacteria in it like just about every other foodstuff. A few days at room temperature and you have a bacteria field-day. |
Why don't screenwriters get more recognition? | Because you can have a terrible script but a great director and/or great actors can make the best with what they are given. If you have a fantastic script but shitty actors and/or shitty director, it will be a shitty movie. This isn't to say that the screenwriter isn't important, it's just that if you have the exact sa... |
How are hamsters able to fit so much in their mouths? | Hamsters actually have fur-lined cheek pouches where they can store extra food. They're super stretchy and they're not exactly part of their mouths. Chipmunks also have these cheek pouches. [Here's a photo of a hamster that's been dissected and what cheek pouches look like inside.] |
What is it about cockroaches that makes them a health code violation, and something that people generally see as disgusting? | Cockroaches tend to live in dirty conditions, harboring a lot of bacteria. They get into things like food and spread the bacteria, which can get people sick. People in general find insects gross, because we know they can be harmful or cause disease .Cockroaches can spread disease-causing bacteria and also they carry al... |
why don't we wear our socks inside out i.e so that the smooth and comfortable parts are in direct contact with our feet (as opposed to the tangly knitting conventional way?) | Socks are designed to be a friction interface between your feet and your shoes. they cling to your feet so that only the sock part moves in relation to your shoe, thus protecting your skin. By having the outside rubbing surface fuzzy, the sock will quickly become frayed and you will get holes in your socks. For indoor ... |
Due to the recent events in the United States why has their been little protest/revolt all over? | Why do people want Americans to riot? WTF is this all about? I see it come up over and over. WTF is it that people outside the US do not get that we're adults about this shit. Unlike idiots the world over who riot about shit and do nothing but destroy their neighborhoods and make themselves look like fucking savages, w... |
What is it that physically makes us laugh ? | Laughing Physically laughing is caused by, your muscles of breathing and your larynx . You have different muscles to both inspire and expire . Restful, or quiet breathing involves using only your diaphragm to inspire, and the natural tendency of the lung/ thoracic cavity to expire. Imagine as you use your hand to stret... |
Why will increasing the minimum wage not deplete the purchasing power | Everyone doesn't make minimum wage. There's no reason to believe that raising the minimum wage by X will cause everyone's pay to rise by X. |
When we say time is the fourth dimension, can we show it on a coordinate axis? Will it just have a positive axis? | Yes, time could be shown on a coordinate axis. In fact, it often is. Any time you have a graph of distance over time, velocity over time, or anything over time, time is the X-axis. No, it doesn't have just positive. Measurements of time on an axis would have to be relative to some "Time = 0" and usually that point is w... |
When you shoot a gun up into the air, does the bullet fall down with a force strong enough to kill? | Short answer, if it's fired perfectly straight up, it will tumble end over end on the way down and probably won't do any damage. If it's not perfectly straight, it will travel in an arc and can still be at lethal speeds when it comes down. A couple years ago a 12 year old died on the Fourth of July because a neighbor f... |
If Iceland was able to arrest the bankers responsible for their economic collapse, why can't the US do the same? | The short answer is the Iceland had pretty solid evidence of specific people committing crimes within Iceland. The general "Global Crisis" is very, very complicated and don't believe otherwise. It involved financial institutions around the world doing shady shit. If you have a subsidiary in the Bahamas taking a bribe t... |
Why aren't websites held responsible for serving ads infected with malware? | Thats because mostly ads are not published by the site owners .The ad which we see on websites are published by various ad companies who have tied up with the website owners.Websites are just providing the space for ads and getting money but the ads are maintained by the ad companies like adsense etc.I'm not sure why y... |
When looking at a clock, why does the first second seem to last longer than the following? | > This illusion is caused by Saccadic Masking, a mechanism that our brain uses to help us see the world without getting dizzy. Our eyes are constantly moving and our head also turns a lot. Saccadic masking shuts down the input when the scenes that shown to your eyes are blurry. So when you move your eyes, the brain has... |
Why is it okay to call a guy a dick but it isnt ok to call a girl a cunt? | Men have a history of being a more in power group so calling us a dick is calling us the more in power genital Similar to calling non whites a slur compared to calling a white a cracker. Yes its still a racial slur but as whites are more the more in power group its harder to be offended Tl;dr I have no idea what I'm ta... |
Why should weight class matter if you're getting punched in the face? | Weight in a fight is very crucial for a fair fight. A 150 pound man would be at a considerable disadvantage against a 200 pound man because heavier fighters will have more weight behind their punches and could push or handle a lighter fighter more easily. Consider a full grown dog fighting a puppy, the grown dog will o... |
Do i lose my information on the cloud if the data storage center where my data is stored is destroyed | Typically, a good cloud storage provider will have data backed up/replicated to other data centers. Plus, multiple layers of redundancy throughout their servers, disks, network equipment, etc. I don't know the specifics of what Google, Microsoft, Amazon, etc have in place. I would assume they could still withstand some... |
How does clock speed affect the computing capability/performance of a processor? | A faster clock speed simply makes the processor perform its calculations faster. Faster processing = better performance. There are two problems: 1) It generates more heat, and if it gets too hot, that will cause problems, including causing the computer to shut down. 2) If you try to overclock it too much, it can start ... |
Why is drawing paper grainy ? | The surface texture of paper is called *tooth*, and it heavily affects the mark that your drawing instrument leaves.A rougher tooth will more readily absorb watercolors, for example, which will prevent them from running or from blotting, giving you crisp and clean lines. You can even apply multiple layers of watercolor... |
Why do some TV shows have a sign language interpreter on the screen? Why can't they just use subtitles? | As far as the interpreter goes, though, some deaf people may prefer it because they're accessing information in their own language English is usually the second language learned for deaf people, so that may be a secondary choice. |
Can a person actually be scared to death? | I think so. If someones physical condition is bad they might get a heart attack due to the adrenaline. Otherwise I think it is not possible. _URL_0_ Edit: link |
How can companies like Samsung and Microsoft make commercials that defame the iPhone and iPad without any legal consequences? | Well technically they are not 'defaming' the products, as that only applies to people . Commercials seem to have a lot of leeway. To get them in trouble, you would have to prove that they were lying, that they knew about it, and they couldn't just weasel out of it by saying that it was simple exaggeration and any viewe... |
When driving, why can I come to a full stop by hitting the brakes, let go of the brakes, and have the car move forward for a bit by itself? | It's not momentum. Cars with an automatic transmission will move when they are in drive, whether you are pushing the gas pedal or not. |
How do animals decide whether they're going to confront/fight another animal, or back away? | Animals can't write books, solve math problems, or use other higher levels of reasoning . but on lower levels of thinking, they're a lot like humans. If you saw a wolf, what would you do? You might run away, or hide from it, or yell at it and try to scare it away. Animals are just like humans, in that not all of them w... |
Why can't there be a company that starts mass-producing PCs so that all games are shaped to their standards(Like Xbox or PlayStation)? | There's not a lot of room out there for a new console. Sony and MS pretty much have the market on lockdown. There's a pretty significant financial barrier to entry in a new game console. Steam is trying to do exactly this with their SteamBox. It's success is TBD.Because then you have a console I'll elaborate. A big par... |
Does GPS function on your phone depend on the phone or the cellular service? | The type of gps service your phone has is a special type, and mostly, though not fully, relies on your cellular connection and signal to determine its location. It's a special type of gps called A-GPS "Assisted GPS" that uses sources mostly sources other than the device itself receiving the satellite signal. I.e. It ge... |
why do batteries start working again if I roll them or turn the device off and on? | A little bit of corrosion can build up between the contacts and the battery preventing electricity from moving through. Spinning or scratching them removes the corrosion and you get a fresh contact area and it starts working again. |
How are ads like "you're the 1000000th visitor click here to claim your prize" legal? Isn't that like false advertising? | they don't get reported. if you were in charge of declaring ads illegal, would you occupy yourself with technically harmless internet advertising? sucks, you wouldn't have a choice.False advertising typically refers to a consumer buying a product based on the claims of the ad, but finding out the ad was not truthful an... |
Why are there craters left by asteroids but not asteroids inside the craters? | The physics of impacts are explained [here]. Basically, it's like throwing an egg at a wall; the meteorites aren't really harder or more dense than the rocks they impact, so they'll flatten and shatter along with the rock or dirt or material that gets pushed outward and spread out everywhere. Kind of like in [this vide... |
How do candles obtain and keep a scent for so long when it's essentially just colored wax? | There are essential oils and fragrances mixed into the wax. Like deep in there. I've had some candles sit around long enough to lose there scent and I've had some that have been around for 10-ish years and still smell faintly. |
Can a hand spinner break the wall of sound ? | Aside: Non-native speaker? The term in English is usually "the sound barrier". There's no reason why not, in principle, but chances are you don't have enough muscle-power to get it spinning fast enough for the tip speed to be supersonic - quite apart from /u/Concise_Pirate's point about the mechanical stresses on the p... |
How do illegal Immigrants live in the US. | Regardless of their status, every child in America has a legal right to a K-12 education. There was a supreme court case that makes it illegal for schools to require anything only a legal citizen could obtain or inquire about anything that may out their parents as illegal immigrants. Housing discrimination based on imm... |
What does but mean when my network says "Connected, no internet"? | It means that you are connected to your home router, but your home router doesn't have any Internet connectivity. So, you can reach other things on your home network, just nothing outside of it.This means that you are connected to your local network, but are not connected to the internet. This could mean that your conn... |
Why Americans want america to be 'great again' | > I mean, i got a bit of your history in my classes, and you're barely 400yo. I think you only had like 1 war on your soil , but you mostly waged war elsewhere, even during WW1 & 2. The US is not even 300 years old, but yeah we've had the good fortune of doing most of our fighting elsewhere. > Point is, i don't know wh... |
Why doesn't everything crack or freeze while in space? | Different materials respond to being cold in different ways. A lot of materials won't crack even when subjected to extreme cold. The shape of an object can also matter, and even some of the particulars of how it was manufactured. And the rate of cooling can matter as well. So long as the internal stresses that result w... |
Why do we (in the U.S.) have a National Forest Service AND a National Parks Service? | No. They are very different things. A park is for people. It's about recreation -- going somewhere to do and see things. A national forest is for nature. Sure, people can go there and enjoy it, but tourists aren't the reason it's there. This is reflected in the fact that it's not just two agencies, but they are under t... |
what is the "positioning theory" in the marketing field? | It means the business identifies a group of new customers for their product and then aims some marketing towards them. Jack-in-the-Box sees that a lot of after-party drunk kids eat fast food so they begin making commercials aimed at them. "Hey, come to Jack-in-the-Box real late on weekends! We're open for you and have ... |
When it is windy outside, why does the indoor toilet water swash around. | It's because in order for you drains to work properly, they have to be vented. In many places, code says the vent goes up to the roof. Since the vent is, by definition, open to the air, the gusts of wind will change the air pressure in the vent, which translates to pulses of pressure in the pipes and up to your toilet.... |
What is that low humming/ringing sound we hear shortly after a TV or other device is shut off? | Every electronic device vibrates due to electronic collisions in the circuitry. It’s why you hear buzzing in overhead power lines. When electrons hit something, part of the kinetic energy transfer is lost as a pressure wave, ie, sound. In the case of TVs, radios, and phones, it just means the emitted pressure wave is a... |
How do the chemicals in LSD change the way your brain sees life? | First off LSD is a chemical by the name [Lysergic acid diethylamide]. Why does it change a persons perception? Simple answer is it temporarly changes a persons brain chemistry. Most every thing you put in your body has some effect on your brain. A candy bar might create a blood sugar spike affecting your brain, Alcohol... |
What's the difference between logarithm and exponential equation? | They are separate operations. If b^ = y, then log_b = x. In the first equation, you're given b and x and need to determine y. In the second, you're given b and y and need to determine x. What you know determines which operation you need to do to find the unknown quantity.A logarithm is just an exponent. It answers the ... |
Why is our first reaction to pain to grab the body part that is causing discomfort? | This is called the "gate control theory of pain". Basically, non-painful input closes the "gates" to painful input, which prevents pain sensation from traveling to the central nervous system. Therefore, stimulation by non-noxious input is able to suppress pain. More here: _URL_0_', "I assume it's to try to find the sou... |
What's the difference between the Canadian and American health care systems? | In Canada heath care is considered a human right. In the United States it's considered a commodity. |
Why do cats swish their tails back and forth when they're playing with a toy or another cat? | I strongly disagree with the two answers that have been given. The answer for cats is the same for dogs - a wagging/swishing tail means they are ready to interact. How they wag/swish their tail is a clue to how they plan to interact . That is how their tail action differs. A cat in true prey drive does not swish/wag th... |
When a download stops (e.g due to loss of connection) why can't someone continue where hey left off? | You can, as long as your browser and the sending server support it. There is no technical reason why this shouldn't be possible. |
Facebook spam accounts that send you friend requests - who is making them and why? | People pay for likes and promoting, so spam accounts are created and because they need to be believable they add random people, like a ton of stuff, but rarely have more than 1 or 2 photosI just had one that was an obvious scam. It was a hot "American" woman who had a shitty profile written in broken English. She said ... |
Why does it seem like the character trope of "insane" conspiracy theorist always seems to be coupled with right libertarian values. (Both in fiction and reality.) | Possibly because so many conspiracy theories involve anti-government themes. This would put the 'conspiracy nut' in agreement with much of the Libertarian party platform, though accidentally, given the the thought process and use of information. One theme involves world government, usually pairing up multiple heads of ... |
how do news websites update the news content? | Sites that have content that changes often will employ a Content Management System. It's basically a program that presents the publisher with an user interface they can use to publish stories on their site. A news site is basically a blank template that you can slot stories into via the CMS. The general layout and look... |
How come massive ice sheets covered most of North America, but not eastern Russia and Siberia during the Ice Age? | As shown by [this image] large portions of the area are covered, just not as solidly as North America. Note also that not all of nearby Alaska is covered either. Precipitation patterns greatly effect ice formation, if no snow falls the ice can't accumulate. So in the areas ice free the most likely cause is a lack of pr... |
What are "growing pains" and why do they hurt? | Growing does not actually hurt. Its just an old belief that caught on. When you work out, your muscles get sore as it repairs itself and get bigger. Growing pains is basically muscles repairing and building itself in the early childhood stage |
why after closing my eyes for at least 30 second in the sun makes me see the light of the sun white/blueish color not the normal yellow ? | Because the light coming through your eyelids is more to the red end of the spectrum . Your red light receptors are a little "depleted" for lack of a better term, and when you open your eyes it take a little moment for the colour balance to be restored in your eye's receptors. |
How likely is nuclear war within the next decade? The next century? | The risk of a nation launching a nuclear attack and initiating an all-out war is extremely low. Where the danger lies in the not too distant future is rogue entities getting the capability to launch an isolated, one off strike. |
Why did the US care so much about not letting Cuba, parts of Latin America, Vietnam, and other parts of the world become communists? | Basically, the view was that the Soviet Union was trying to take over the world and that it had to be contained. The communist world was seen as a monolithic bloc. If a country became communist, it was considered to be merely part of a vast Soviet empire spreading out across the globe. Communists in Latin America and S... |
Why is there blue raspberry flavored candy, but not the typical red raspberry flavored candy? | Blue raspberry is not an actual fruit. It is flavored to taste of raspberry but colored blue to distinguish it from cherry, strawberry, and watermelon which are also shades of red/pink.There are already plenty of fruit flavors with red coloring, but not so many blue ones. Thus, the new flavor stands out more, with the ... |
What's the difference between "nephew", "cousin" and "niece"? (not a native English speaker here who never got the concept) | Nephew is the son of your sibling, niece is the daughter of sibling, cousin is the son or daughter of your parent's siblings |
How does mixing two seperate colors to make a third new color work in terms of wavelength | We humans have 3 types of colour receptors in our eyes. One each for red, green and blue. They each detect different ranges of wavelengths of light. These ranges overlap. So for example pure yellow light will be detected by both the green and red receptors. That means our eyes can't tell the difference between photons ... |
Why can't we eradicate "pesky" species? | At least we finally got rid of those pesky black rhinos. God I hated those things.Trust me, I'm not a scientist or smart at all, but all species play an important role in an ecosystem, and the absence of a what seems like an unimportant species could cause a whole ecosystem to have major problems. |
How does a slide rule work? | It relies on the properties of logarithm. Simply put, log + log = log and log - log = log. Actually proving this is long and messy but you can try it with some numbers in your calculator to see it work. |
If I was to cut my armpit hair in half, how would it know to grow back? | It doesn't "know" anything that happens to it. It grows to a certain length and then stops. And then a little while later it falls out. The hairs would stay at half length for a bit and one by one, they would fall out and start re-growing. They wouldn't all fall out at one time. Some of the hairs you have right now wou... |
Why can people admit to crimes on documentaries and not get convicted? | They ~~couldn't~~ [Edit: probably wouldn't] be prosecuted on their statements alone. They would just plead the fifth and say they were lying before. To be prosecuted there would have to be physical proof of their illegal activity. |
What makes cabinets ridiculously expensive? | Two things: First: they don't make a lot of cabinets. How many new kitchens happen each year? Second: your cabinets are made to order. Nobody sane would stock all 46 cabinet elements in the 20 possible stains and 35 possible styles. Things get cheaper when you can make thousands or millions of the same thing in an auto... |
Will Amendment 2 passing in Florida cause street marijuana prices to drop? | Medical Marijuana here in Nevada passed a decade ago, but we didn't get dispensaries until about a year and a half ago . With the prevalence of dispensaries here in Las Vegas that we didn't have before, it didn't affect the prices of street marijuana to change because what was obtainable in dispensaries was way more ex... |
Why does it seem like most animals run away from humans but are fine being around all other animals? | Because they have learned we have a pretty bad habit of murdering them?', "Why do you run away from a lion but you are fine being around cats? Because the cat won't eat you if it's hungry, but the lion will. Of course most humans won't just kill and eat a wild animal when they are hungry in this day and age, but animal... |
Why do neurons connect as synapses instead of physically connecting to each other? | The synapses you're thinking of - as do most people - are called chemical synapses. As you know, between communicating neurons there is a small gap called a synaptic cleft. Neurotransmitters are small chemicals that leave one neuron and move across the synaptic cleft to alter the state of the next neuron . The cells do... |
RGB lines when you take a picture of your monitor | That's called a Moire pattern. _URL_0_ Your monitor has a certain resolution, which you can think of as a grid of squares. Your camera's sensor also has a resolution, which is a different grid of squares. When you overlay them, they won't line up perfectly. Some squares on your camera might be filled completely with a ... |
Why does toilet paper get wrinkly as you near the end of the roll? | Didn’t work with toilet paper but when I worked at a factory I worked on a winder line. Sometimes when the rolls were not tightened on all the way they would wrinkle, but depending on what type of adhesive the tp manufacturer uses it could just be that the tp folded over. Hope this helps! |
Why does time seem to fly when we fall asleep? | Does it? Our awareness or experience of time is a very fluid thing.For example people who experienced car crashes can tell you what color shirt the girl across the street was wearing.Normally these details go past us , way too much to take in.These people describe the event as if it was in slow-motion.So one thing that... |
Why does peanut butter only stick to the roof of my mouth, and not the other surfaces i.e. My cheek? | Someone will have a much more scientific explanation, I'm sure, but do this test for me: * Open your mouth wide. Swallow any excess saliva. * Breathe in deeply a few times. Four or five times should do it, just until your breath starts to feel "cold" and you start getting the urge to close your mouth again. * Now run y... |
male circumcision in the US | The majority of American's are Christian, and Christianity does not require circumcision . However, proportionally there are a lot of Jewish doctors in the US. There are many Jewish doctors that have been pro-circumcision, and this overall has had much more of an impact over the lack of doctors that are anti-circumcisi... |
Why is it seemingly easier to port a PS2 game to PS4 than a PS3 game? | The Playstation 3 had a very unique architecture that, when properly utilized, allowed performance far beyond what you'd expect from the hardware inside. The two big downsides were: * It's all unique to the PS3 and *very* low-level stuff, so porting a game means re-writing huge chunks of code that interfaced with the P... |
The difference between the placebo effect and confirmation bias? | Placebo effect is someone believing they are getting better even when they've been given a fake medicine they get better simply because they think they're taking medicine. Confirmation bias is believing only those things that line up with a preconceived notion that you have, and ignoring evidence that contradicts what ... |
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