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Why can't they use another colored background to project picture,video etc. other than green? | They can. You can use any kind of solid colour, but usually green or blue is used because it stands out the most against human skin colour and against the colours of the clothes we generally wear.They can. It just turns out that green appears the least in clothing, so it's safer to use that. Bluescreens, however, are a... |
What does doing your taxes mean? | Well most people do withholding, which means the government takes a certain amount of money out of your paycheck every week/2 weeks, and then at the end of the year you have to go through your records and prove to them how much of that money they shouldn't have taken. If you get it wrong, they get to keep the remainder... |
Why do Diesel engines sound totally different from gas engines? | They ignite on compression alone which gives that knock sound, unlike a gas engine that uses spark plugs.Ahoy, fellow redditor. Yer not alone in askin', and kind strangers have explained: 1. [ELI5: Why do diesel engines sound different compared to petrol engines? ] ^1. [ELI5: Why do diesel engines sound so different fr... |
What's the biological impact of removing wolves from an area, and what is the biological impact of reintroducing a new population? | Removing predators like wolves can lead to overpopulation. There are more deer in North America today than when the pilgrims arrived. This can lead to starvation, disease, crop damage, and traffic accidents. Reintroducing predators, if done correctly, can control those populations. It can also, in theory, lead to ranch... |
How are different types of fireworks engineered? | Certain materials respond in different ways when they're lit on fire. For example, solid Magnesium shines a bright white and Copper usually shows a green color. Firework scientists make a mixture of that material and other materials to form these little balls that, when lit on fire, explode and shine one color. To make... |
How do foods with an awful taste become delicasies? | Especially with fermented foods, a lot of them are developed out of necessity. Over time they might become delicacies, but originally were made because they could be preserved for long periods of time. Not sure about the egg, that looks nasty, but with the Surströmming even the people that like to eat it will crack tha... |
What's the difference between a scientific theory, a scientific fact, and a scientific law? | The use of "scientific" is unnecessary, if not redundant, and does not add to the definition of any of these terms. A fact is a fact, a law is a law, a theory is a theory. "Scientific" does not lend any additional or categorical credibility or distinction. It seems you 've been subject to a bunch of jackasses throwing ... |
Does it help when a criminal burns out his car or will police still be able to found something out of it? | Eh, it depends. DNA evidence usually gets destroyed in high temperatures, to if the evidence of concern is just DNA , then it helps. Finger prints would likely be destroyed as well. But if there is say, an entire body in the car , then burning it is not likely to be entirely successful; you still have the skeleton some... |
Why do astronauts never dress comfortably in space? | In 0 gravity astronauts have to be careful about what they have in space [like the corned beef sandwich that almost got everyone killed]. The suits they wear don't have any fluff or other weird things that can fly off the fabric and get into the electronics and cause problems.I don't think there's an official dress cod... |
How do certain medications cause people to gain weight? | Often it simply slows down the person's metabolism , which means that food that is eaten is more likely to be stored as excess weight. |
Why does experience matter in playoff sports? | All people are saying is that experience *matters*, not that it's a trump card that guarantees a victory, which is what it looks like you're arguing against. It would be tough to really make an argument that experience doesn't have any impact. Just about everyone gets nervous butterflies they first time they are in a n... |
If copyright protection ever actually runs out for Mickey Mouse, how could he be used by non-Disney parties without violating trademark law? | Copyright and trademark are two different things. If Disney ever fails to have their politicians extend the copyright and Steamboat Willy falls into the public domain, it won't mean that you can freely violate Disney's trademarks. You will be able to copy, view and show the animated film without paying Disney and even ... |
Why are cartridge based video game systems inferior to disk based ones? Also, why did cartridge based system not have load times? | They are larger and hold less data. They are also significantly more expensive to produce. They don't have load times because there's no moving parts. It's solid state memory. No laser needing to read a disk. |
Is there a reason some tasks are harder to perform the more you focus on them? | It's very common, and it's not just you! To simplify things a bit, your brain has different pathways it routes actions through. As you become more practiced at something, it routes it more and more through the "automatic" pathway to, in essence, save processing power for other things. This is most pronounced for things... |
Why doesn't water spill immediately out of a glass when it passes the top? | It is related to surface tension, yes. Both of them are related to water's unusually high cohesion . Basically, think of it like the climax of an action movie. Some of the water molecules are hanging over the cliff, but their loved ones are NOT GOING TO LET THEM GO, DAMMIT, and so they hold on. But put enough water in ... |
Why lawyers get higher salary than scientists? | Because you're not paid by how much work you do, how skilled you are, how much you help the world, or how much you're needed. You're paid based on how much money your client has, how difficult you personally would be to replace with another worker, and how many middlemen exist in your industry to take money from the cl... |
Why do pets hoard things? | Not an explanation for the hoarding cause I'm dumb, but I'm pretty sure that cat just happens to get the caps stuck under there coincidentally. My cat has a few spots where she likes to play where things easily get stuck under. You move it and you find balls and caps and all sorts of things she was batting around. |
EIL5: What does the Transatlantic Trade and Investment Partnership mean, both positive and negative, to me: 25 yr old taxpayer? | It's a transatlantic organization that works to put the European Union and the United States into a common market. Much like the way the European Union is put together there are no tariffs between Member States. The idea is that if the two largest economic entities in the world could cut down on the tariffs and other n... |
Where does everyone's poop go? | The poo part of sewage is destroyed by an anaerobic sludge digester, which is a big tank a bit like a giant blender full of poo. Bacteria eat it and turn it into methane, carbon dioxide, and ammonia. The full process is [rather complicated and like a Rube Goldberg machine for destroying poo]. Anything the bacteria can'... |
who is my second cousin once removed? what is he/she removed from? | First cousin - you share a grandparent . Second cousin - you share a great-grandparent . Second cousin once removed - removed from your second cousin by one generation - that is, the child of your second cousin.removed refers to the difference of one generation. so your second cousin once removed is your parent's 2nd c... |
What exactly is an "overdose"? What causes them, and why is it different for each substance? | Your spleen, kidneys, and liver are the parts that dispose of harmful substances, and they function much like filters. Like a filter, you can only remove so much poison from the blood before it's building up on the filter faster than you can clean it. At this point, the organ "fails", stops filtering the blood, and the... |
Why can't we write Braille like the regular alphabets? | Imagine trying to read the word "Ill" in Braille. Not easy. Other characters that are easy to confuse: E and F, O and Q, X and K, U and V. The Braille alphabet is designed to avoid these confusionsFind an old typewriter and some tracing paper in it. Remove the ink ribbon and put "AA" next to "M" or "VV" next to "W" or ... |
How would a coordinated cyber-attack, stage-by-stage, look like, if instigated by multiple users against a massive computer network? | The answer depends on the goal of the attack. Generally speaking there are three main categories; exfiltration , Denial of Service , or Destruction of Service . |
Why democratic countries have political parties | Parties are the most efficient way that we have to organize groups of similarly-minded people that are large enough to have an impact on elections. In systems like America's, where you need 50%+1 of the vote to win ), we inevitably end up with two opposing parties. In other countries, where they use systems like [Insta... |
How do muscles produce so much force when they seem to be pulling/pushing at angles that would seem to decrease the overall force output? | The answer is what it seems to be at first glance. Muscles are actually very strong. It's true a lot of muscles work at a mechanical disadvantage, but it's weighed up against the ability to do more with the arm. If the arm was built so the bicep muscle was attached at the point of maximum mechanical advantage then beca... |
Is it possible for someone to enter a house through a chimney à la Santa Claus? | You've got a couple of problems: 1. pretty much all modern chimneys have a pipe in them, they aren't the shape of the rectangular chimney we think about. They are typically less than a foot wide - much smaller than a person. Once upon a time you'd have a brick chimney that was an actual rectangle on the outside AND the... |
ELIA5: explain this joke to me... | The Spirit of '76 is a famous painting by Archibald Willard:[link]. This joke was also in a Three Stooges Short. It's not a particularly good joke by modern standards."The Spirit of \'76" refers to the famous painting of two drummers and a piper marching during the American Revolution and refers to the Revolutionary sp... |
How does international law even work? | Short answer, there isn't really a practical method of enforcing international law other than voluntary participation. Long answer, international law is a series of UN backed treaties, ranging from human rights and genocide to business and patent law to environmental agreements. However, countries must both sign and ra... |
Why would it be so terrible for America to offer incentivized sterilization for parents already unable to support the children they have? | Mostly because the old white rich men who are in charge of things don't directly benefit from it. Because people think with emotions, not logic. And years of capitalist sentiment combined with years of anti-communist propaganda means that those in power have a strong negative emotional reaction to helping the poor, or ... |
If we see red, blue, and green light, why are the primary colors red, yellow, and blue? | Red, yellow, and blue being primary colors is just one color system that was created primarily by painters in the 16th-17th centuries before we really understood how light works or developed our scientific knowledge of color and additive versus subtractive color. It works for what it does, but it's old, and it's certai... |
Why is it that I can watch the most horrific, brutal videos of humans but I can't bare to watch something happen to an animal? | I'm the same.. I think it's probably because you can sort of disconnect from seeing this kind of thing happen to a human, almost like it is a movie, because of how often we see violence against people in movies. When you see an animal getting hurt though it always feels horrible to watch because you know that 99% of th... |
What are the small circular mettalic holes on the sides of shoes for? | The holes in the converse is for venting air. The shoe is specifically designed as a sports shoe for dry flat surfaces and can therefore become quite sweaty. The holes provides good ventilation to prevent the buildup of sweat. |
What is the point of Kirchhoff's First Law? | If your circuit splits up into different paths, it tells you that the sum of the current in the paths will be the same as the current before they split up . |
Why does your brain do things in the wrong order? Does this have a special name? | I'm not expert on brains or anything but I might know the answer here. Somewhere in your long term memory is the fact of where you put milk and where you put a bowl and to say it really simply when these memories are retrieved form long term memory they could get mixed up so for a brief moment you actually believe that... |
Is there any legitimate reason sandwiches taste nicer when cut into triangles or is it all in the head? | I actually prefer mine uncut, my aunt used to cut them to be nice and i would go get 2 new pices of bread cause i didnt like it like that. I think its just all in your headI think because your ratio of crust to no crust is more consistent throughout eating the sandwichThis is geometry in action. You know how the hypote... |
why do my smoke detectors flash and beep during lightning strikes? | possibly because smoke alarms use a small ionizing material to detect smoke. a lighting flash outside ionizes the air in the surrounding area. or maybe the electronic circuits inside the alarm are being induced by the massive electrical discharge outside |
why did cans stop being stackable? | Not all cans are like that. I've got cans of pet food in my cabinet that stack perfectly. I've got cans of Bumblebee tuna that stack just fine too. It's most likely just that particular brand's decision to use a different can. Maybe that type of can is cheaper or maybe they can save money on manufacturing by using a di... |
Why is music I listen to perceived as slower after physical exertion? | The insular cortex is responsible for functions like consciousness, emotion and perception. When you 've just moved a lot of muscle mass such as in a cardiovascular exercise/task the autonomic sympathetic nervous system output is increased. Also, all the stress hormones increase including adrenaline and cortisol and th... |
Why in most democratic countries the president can't stay for more than 2 terms. Can't the people let them stay longer? | Mostly it is to prevent a popular president from accumulating too much power in the government. A leader who stays too long tends to make the organization about himself whether he wants to or not. Things get structured around how he operates, and people defer to him based on his experience. When he leaves his post, esp... |
Why do so many child actors lose control of their lives as they grow up? | I was under the impression that they didn't have much of a childhood. It was taken away from them when they became actors. Since they started working so early and had so little freedom, once they do get away from it, they tend to break free and make poor choices.Probably because they don't have all the structure and "n... |
Why is a tournament for (American) football called a bowl, such as Super bowl, and for soccer a cup, such as World Cup? (And Open for bike ride/tennis) | They don't have to match up like that, for example the Davis Cup is a tennis tournament. "Cup"s usually have cup-shaped trophies with the same name which are awarded to the winner. Tournaments are usually named "Open" if anyone can enter them , of course professionals usually dominate the top places so if you ignore th... |
why did humans choose to migrate to locations with harsh climates? | In brief: - To expand territory - To exploit resources - To escape enemies - For protection against enemies - For less competition', "One possible reason is less competition. Fertile lands are highly desirable, thus you'll have groups fighting for control. However, if you learn how to live in more harsh climates, you'l... |
We know that Humans can contract potentially deadly diseases or viruses from animals but are there any viruses that humans can carry which are equally as deadly to the animals? | I know that the common cold can be deadly to smaller primates. When working in a zoo, if you have a cold, you MUST wear a mask and gloves at all times. |
Can the space shuttle make the trip to the moon and back? | The first reason is because our space shuttle fleet does not exist anymore. That's a bit of a hurdle. Secondly, the shuttle is not designed to be equipped with boosters of the necessary power to get out of low earth orbit. Getting to the moon requires a TON of thrust. Much more than the shuttle was ever intended to pro... |
Why and how does ambient sound help you concentrate or fall asleep? | Just a guess: It's something to listen to without paying attention. Put another way, silence alone is distracting. Also when it's quiet, any small noise is going to get your attention. Turn on some white noise, rain sounds, etc. and you can basically stop listening to anything. There's nothing for your brain to lock on... |
How is it that we can tell when we lock eyes with people even at a far distance? | Eye contact has evolved in human beings as a very important form of non verbal communication. When you lock eyes with someone you both know it is happening because it is essentially as "important" as them yelling at you over a long distance. Interestingly enough about your point of animals, dogs have developed the abil... |
How do two countries define their national borders? | it's just historical reasoning and agreements between countries. they can be respected , or not. in old continent, borders are based on historical boundries of countries and on natural borders or on post WW2 agreements . in new world boundries are artificial, that's why many countries in Africa looks like rectangles. i... |
Why do clouds that are about to storm turn dark? | Storm clouds are much taller than normal clouds, so they more effectively block the sun and appear much darker from underneath. |
What is Jury Nullification and why does it get people relieved of jury duty? | You should check out a CGPGrey video on the topic. Long story short, the law creates a situation in which a jury can decide to acquit a defendant even if they are factually guilty of the crime charged. For example, they might feel that 5 to 10 for simple possession of marijuana is unjust, and therefore decline to convi... |
Why do we feel the need to explain our own thoughts to ourselves? | I think a large part of this is just a consequence of consciousness. The right hemisphere of our brains uses intuition to detect patterns, but it's the job of the left hemisphere to analyze those patterns to see if they hold up to rationale. I like to think that the right hemisphere of the brain is sort of like a subco... |
why do many major league player's sports contracts always include a deferred annuity portion? | I'm not sure how common they are, but here are some possible reasons why a sports contract would include one: 1) Athletes are notoriously bad with money. Annuities provide a more stable source of income rather than giving it all to the player at once. 2) Because the salary is deferred, the team has more time to acquire... |
Who are the "regressive left" and why is their political stance a problem for society? | The 'regressive left\' is a very small but very vocal group that could best be described as a "liberal" equivalent to the alt right. I put liberal in quotes because they really aren't that liberal. This question is loaded and will probably be removed, but here's what most people have a problem with. First is that they ... |
Why do bombs "whistle" when they are falling. | They have whistles placed on them for effect and intimidation. If they didn't they wouldn't make a sound at all, and most of them dont. |
The differences between president, prime minister, and a premier. | Presidents are generally directly elected. Prime Ministers or Premiers are generally regular representatives who are elected by the other elected officials. For example, in Australia, the people have no direct say in who their Prime Minister is. We vote for our local representative, and then those local representatives... |
Can someone explain how to restrict my roommate's internet access LI5? | You need to buy a router with QoS capabilities essentially, it's exactly what it sounds like, quality of service. the easiest way to think of it is that each person by default is given 100% QoS. this means they have unlimited download speed. by changing the QoS to 50% they will have half the download speed and the rest... |
Where does all the seized money from a drug bust end up? | In the US, it gets spent on law enforcement. Other assets also get seized and sold._URL_0_', "Those pics weren't really 22billion. The OP pulled numbers out of nowhere |
how do games know when they have been pirated? | The below items are three ways in which games/studios can and do track if a game copy is pirated or not. 1. A studio will release a pirated copy on common locations and have modified code to either send a packet to a remote server or just screw with the person who obtained the copy illegally. 2. The game will require o... |
How do services such as Spotify and Overdrive make sure that you don't permanently download their material? | The files are not in a standard format. You couldn't just take the files and play them using another media player app. The Spotify player knows how to decode the files into a normal audio stream and then sends it to your sound card. If the process used to encode the Spotify tracks was known, then it could be reverse en... |
Why is my amount applied to the principal so low if my interest is only 4.75% and why is the amount applied to the interest varying so much? | Usually with a loan like this the bank has a vested interest in ensuring that they collect the money they are owed for providing you with the loan . This means that at the beginning, you will be paying a larger percentage of your payment as interest, and as the interest portion owed grows smaller, the amount applied to... |
Why do Americans make fun of Canadians so much? | I don't think jokes between Americans and Canadians don't have anything to do with animosity, really, it's because we're very similar that finding flaws and giving each other some grief over it is kind of a way to assert the few differences we really have. In the U.S. anyway, it's a way to point out the absurdities in ... |
How to be a responsible adult? | That's a bit of a vague question, but I would say if you are capable of taking care of yourself without needing your parents for money, laundry etc. then you are well on the way. Make sure to be organised, especially when it comes to realising that even if you have money, it doesn't mean you can *spend* that money on y... |
Why do radioactive materials emitt radiation? | Basically, you 've got atoms, right? They're the basic building blocks of the Universe. Each atom has a nucleus containing protons and neutrons. If you remember your basic physics, protons have a positive electrical charge, so they want to be as far from each other as possible, but the "strong nuclear force" is holding... |
What causes an economic "bubble" to "pop", such as the Dot Com bubble, the Housing Bubble, Bitcoin, etc | People invest their money in a market as it's growing very fast , but eventually the market stops growing as fast and begins to shrink very fast . |
Why is it that you only start to feel the effects of flamin' hot cheetos once you stop eating them? | The crunchy stuff cools it off as you eat. Once you are done eating you are only left with the hot stuff. |
How does coherentism help us establish truths? | Any logical claim of the form "if P then Q" has two properties; validity and truth. Valditity means that a claim follows a valid argument, and that, indeed, if P is true then Q is true. Truth means that Q is true or P is false in a specific case, nothing else. IN the case of a web of beliefs that justify themselves, us... |
what makes a post a circle jerk? | If a post is completely comprised of like minded individuals just agreeing with each other, it's a circle jerk. So when you downvote someone just because you disagree, you're contributing towards a circlejerk. |
What happens to the guy who loses in a presidential election? | We can look at the last few: 2012's loser was Mitt Romney, [who has mostly retired from political life]. 2008's loser was John McCain, [who remains a Senator from Arizona]. 2004's loser was John Kerry, [currently Secretary of State in the Obama administration]. 2000's loser was Al Gore, who remains active in politics b... |
why nasal congestion seems to switch from nostril to nostril periodically while sick | Nasal inhalation is done favouring alternate sides every few hours or so.While you do take in air through both nostrils every time you inhale, you take a majority in through one or the other depending on a cycle.Your brain switches it from left to right several times per day. Either your left or right passage widens to... |
Why don't speed limit signs show m/s instead of km/h (in the EU)? | For the same reason you don't see salaries measured in trillionths of a cent or people giving their height in nm. It's not a convenient unit. Nobody uses meters to express the distance from Tübingen to Ghent. Km is the norm. By the way, the signs in the UK are in miles per hour |
What are the implications of the newest NSA scandal? | Realistically, unless you're planning on ordering from a pretty obscure manufacturer and deeply care about whether the NSA can access your data, don't worry too much about your particular laptop. The ramifications are basically the same as all the other NSA leaks: there is absolutely no avenue of intelligence they're n... |
Why aren't there any "positive" diseases? | The very basis of our lives is based on a beneficial "disease" Mitochondria was once an independent bacteria that found its way into eukaryotic cells. This is perhaps one of the most beneficial infections of all time because it allowed cells to use oxygen for energy production. There's also bacteria that "infect" plant... |
Why does lightning not strike in a straight line? | It's following the path of least resistance through the air. Since the air is not homogeneous, it has varying amounts of resistance throughout it. So the lighting zigzags through the areas with the least. |
Why are NFL players tearing ACLs and other ligaments more now than they did 20 years ago? | The ACL is a major ligament when it comes to stabilizing the knee during deceleration. With the players being bigger, heavier and faster then the strain on this ligament is increased. Also the focus on head injuries tends to cause defenders to hit lower which ultimately means more leg injuries.Players are larger and fa... |
Why can't dopamine be manufactured? | While we can create dopamine, there's no way to enjoy the dopamine without injecting it into our brain. It's much simpler to just take another drug that causes dopamine production. |
Why are movies released earlier in some countries and later in others. Why can't they all be released on the same day? | they sometimes release it earlier in other countries to predict how the movie will fare in its country of origin. for example, I remember awhile back that fast and furious 5 was released early in Australia and it dominated a competing movie there, so it gave the production company a sense of what might happen in the US... |
The difference in an allergy pill vs sleeping pill when both have 25mg dipenhydramene. | Pharmacist here: you are getting the exact same main ingredient, Diphenhydramine. The over the counter labeling and directions will be different on the packaging but you could use this for either allergy or insomnia purposes. The cost is purely set by the manufacturer and retailer.There is no difference. It's just diff... |
Can someone explain what call options are? | An option is a right to buy or sell a share at a defined price in the future. E.g. a call option to buy 50 XYZ shares for $1 each on Feb 1, regardless of what the share price is on that day. If I buy this option for $20, and on Feb 1 XYZ shares have gone up to $5 each, I can exercise my option and buy 50 shares for $50... |
How does /u/LinkFixerBot fix every damn link people post incorrectly? | LinkFixerBot is a bot. It's a software program that runs on a server somewhere that uses the [Reddit API] to periodically read through all the threads in a bunch of subreddits looking for instances of "r/ < whatever > " and posts a reply with "/r/ < whatever > ". |
How come it smells so much worse when someone else goes to the bathroom? | The real reason: You are adapted to not find the smell of your own shit repellent, because you must be motivated to do it and find it relieving to do so. That means your own shit smell is fine to you as you are doing it. If you shit, leave it alone, and come back to it a few minutes later, all those associations are go... |
I have brown hair. Why is my beard black with a few brown hairs? | The hairs that grow in that part of your body are programmed to grow in a different shape than the ones on your head, but a different colour as well. It's the same reason why eyebrows differ from pubes and chest hair and nose hair. Each type of hair gets a different amount of melanin, impacting its colour, and other th... |
Am I more likely to get fat if I eat 2,000 calories of junk food in a day than if I eat 2,000 calories of a balanced diet? | You need roughly 3500 calories per pound of fat, so if you burn 1500 a day and eat 2000 calories, you'll gain roughly a pound a week. Junk food is usually saturated with calories, so per pound of food you generally gain more calories with junk food. The problem is that to feel satiated you need to eat certain amount of... |
If we know that leptin suppresses hunger and triggers fat-burning, why hasn't a leptin pill/injection been developed to treat obesity? | Leptin is not used physiologically as an acute sensor of energy. Instead, it evolved as a "famine sensor" - leptin is normally secreted by fat cells, and when all of the fat is used up, leptin is no longer produced. This signals only when there is no fat, i.e., during periods of extreme famine. This is why giving lepti... |
What causes this to happen when I pour Kool-aid? | There's so much stuff dissolved in the water from the Koolaid that the surface tension is different, causing it to stick to the glass instead of pouring like water. |
What advances in the past few years have made it possible to manufacture LED lights that are so much brighter than previously? | The development of efficient blue LEDs is the key. The 2014 Nobel prize in physics went to three Japanese scientists for their work in the 1990's. A white LED is really a blue one with red-green phosphors on it . The blue mixes with the red-green and makes white. |
Tapering off medication. How the dosing works? | It sounds like you're doing a very long taper, which is good! However, I see why you would be worried. I assume this is a medical provider directed taper? Honestly, it would be really hard to taper off of seroquel any different way. The dosages that the tablets come in would make it nearly impossible. If you were reduc... |
why are song lyrics so much easier to memorize than other things? | Because there is a tune or melody that goes along with it. That's why they made the alphabet into a song so small children could remember it easier. |
Why is captcha still a thing? Wouldn't it be easy to write a program that could read them? Or isn't there a better, easier way to determine that I'm human? | Unless you want websites scanning your computer for botting programs or using your webcam or possibly fingerprint scanners to determine if you're human. Then no. |
How do the fish or creatures that live mariannas trench sea level resist the colossal pressure? | The pressure is "crushing" for us because our bodies contain air. We have air in our lungs, air in our eardrums, and air in the submersibles we put in the water. This creates an enormous pressure differential. Sea creatures don't have any air in their bodies, the pressure difference between 20ft in depth and 20,000ft i... |
Can insects hear the sounds bats use for echolocation? | [Some insects have evolved audition and evasive behaviors in response to selective pressure from bats, and other insects were preadapted to detecting ultrasonic signals. Some bats have evolved in turn, improving the range or resolution of sonar signals and serendipitously making them less detectable by insects.] It's a... |
Why was Suicide Squad widely regarded as bad? | Critics have been critical about the plot in particular, saying that the 3rd act was predictable SF crash-bang film-making. I think they were hoping for something a bit more genuinely subversive to match the insanity of the characters. Jared Leto's Joker was particularly underwhelming, compared to the great Jokers of t... |
If I was in outer space with no protective equipment and I tried to breathe, what would I feel? | Your lungs draw in air by creating a pressure differential with the atmosphere around it. When the lungs expand, they create negative pressure, so air from the outside rushes in. When they deflate, there is positive pressure, so air rushes out. Since there is no air in space, there is no outside pressure, therefore the... |
Exons and Introns (in biochem) | After transcription in eukaryotic cells, the mRNA is processed/spliced. Long sections of it are cut out. The remaining material, exons are what the ribosomes actually read to build proteins. This system exists because splicing is a efficient way to regulate the expression of certain genes. |
What was the Spanish Inquisition? | Something nobody expected! On a slightly more serious note, Spain had recently been conquered by catholics . Lots of peasants were muslims or jews and had been forced to become christans. The inquisition was the "police" that made sure they were behaving like proper catholics, and punished those that did notIt was a re... |
Let's suppose the internet no longer becomes neutral. What is to prevent another open "internet" from cropping up and taking its place? | It's a question of capabilities and cost. There are some unregulated networks now, but they are difficult to use and slow. There are also some that use systems other than the Internet Protocol to communicate, but they are much more limited so there are already heavily regulated. Let's look at early computer networks li... |
Why do trucks and SUVs always seem to have giant rebates on them? Why don't they just have a lower price to start with? | In the beginning rebates were used to compensate for factors like slower sales numbers, aging inventory, and overstock of certain vehicles. But in todays market you, the buyer, has been conditioned to expect certain deals. In 2007 Chevy for instence tried to lower the MSRP of their trucks and offer less of a profit mar... |
Why do we feel sadness and what is the root cause of it? | We don't really know why emotions make us feel certain ways, but we do know what causes the specific feelings. Your brain considers physical sensations and sensations caused by your mind to be the same thing. We don't know why it works this way, but it does. Since sadness is mental pain, the brain treats it similar to ... |
Why can't Sweden's garbage system work in the U.S.? | It's difficult to answer this without sounding condescending. Basically there is a tradition or expectation in the US that if something can't be done for a profit it's not worth doing. There is very little political will to push for "the greater good" especially with services that are left to the states, counties, or c... |
Why do hangnails occur? | Biologist here to talk about hangnails! Never thought I'd be saying that. So we tend to get hangnails more during the winter months. Our skin and nails get dry and more brittle due to the cold, dry air. If you wear nailpolish and are using remover frequently or other harsh chemicals this can also cause hangnails to for... |
Why are arcade machines so expensive? | 1.) There are few good, working ones and the people that want them are willing to pay a lot for them. When the seller is not willing to just give it away since they know they can receive a high price, they will not sell it for something less than what it is worth. 2.) The cost of transportation of those big-honking thi... |
- I have a cold. Where the hell are all the boogers coming from?!? Why are some clear and some green? | Your body makes boogers to trap the sick, and get rid of it. The color depends on how sick the sick is. |
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