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What exactly happens with dissolvable stitches? | To your body, stitches are a foreign substance, and the body is programmed to destroy foreign substances. Dissolvable stitches are made from natural materials, such as processed collagen , silk and hair, as well as some synthetic materials that the body can break down. This allows the body to dissolve the stitches over... |
Why iTunes inconsistently "Checks its library", and why it takes so long. | Most likely it is due to improper program termination. I use iTunes everyday and only rarely have encountered the "check library feature" after a crash. You could delete the existing itunesmusiclibrary.xml in the iTunes folder in your music folder and force a rebuild. Good luck!', "iTunes on Mac OS X treats the music f... |
How does one sell their soul to Satan? | It's a simple process. Disavow any religion, never give respect to religious procedure or show reverence towards priests, bishops, etc. Make sure not to follow any moral teachings, unless you're just a nice person and you feel like it. Anytime someone tries to proselytize you, openly mock them. Gamble once a week, lie ... |
Is it just me, or does the volume actually increase during television commercials? | it's a well known phenomenon. In most cases it *hasn't* increased in volume - most broadcasters have regualtions forbidding it - but the sound is compressed in such a way to make to make it seem louder, combined with the use of music and jingles which don't have much rise and fall in terms of volume levels |
What are the 3 layers of the sun's atmosphere and what do they do? | The innermost layer is called the Photosphere, and it is the layer at which light is released from the inside of the sun, therefore giving the name Photo Sphere. It is about 400 kilometers thick. The next layer is the Chromosphere. This layer emits a red glow due to superheated hydrogen being blasted off into space fro... |
Why do pet cats want you to watch them eat? | When cats are eating, they lose their ability to hear. This makes them vulnerable to predators. You are their "look out."', "I have three cats and none of them do this, but I assume it's tied to the leaving-humans-gifts-because-we're-terrible-hunters. Cats living together tend to be social creatures, and you see cats i... |
If the average human hearing is 20Hz to 20KHz, why do they sell headphones with higher ranges, like 30KHz? | To get better results at 20KHz. The rules on this subreddit are forcing me to elaborate, but this is the simplest answer. Speakers with a 'response' from 20Hz to 20kHz cannot have a nice linear response across that range of frequencies, and then immediately drop to no output at all at 19Hz and 20,001Hz. On headphones m... |
What makes some robots move more quickly than others? What are usually the limiting factors? | The faster you want something to move, the more energy you have to give it, and that means more power. Basic physics lesson: Ek = 1/2mv^2 Where Ek is kinetic energy, the energy of motion, me is mass and v is velocity. Velocity is distance/time. P = E/t Where P is power, E is energy and t is time. If you want something ... |
Is light a particle or a wave? | Neither. Both just happen to be things we are familiar with that approximate the behavior of light in certain situations. Light is exactly what the equations that govern it say it is. That is independent of how you choose to conceive of it in your head, and the true nature is hard to imagine. A lot of physicist like to... |
What factors are involved with the decrease in the value of the Canadian dollar? | A very big one is the current drop in oil pricesBank of Canada lowered interest rates. Oil prices dropped recently.When the dollar goes up it means more investors want to buy Canadian dollars. This is usually because of two things: they want to buy things in Canada , or they want to buy Canadian bonds. When the interes... |
Why is hotel internet/cell service always so terrible. | Lots of people concentrated in a small area all trying to use the same resources at the same time. Want fast hotel internet? Try it at 10 am on a weekday . Some hotels also now cap basic service and want you to pay for faster access. So they have "free" internet but it's only about 2-3mb/s. Ditto for cell phones. A few... |
Why does eating ice cream leave a weird taste in your mouth that doesn't go away? | Maybe you're just not eating the right ice cream. Twice in recent months I've had ice cream that was awful. It felt like my tongue was being coated in some kind of greasy sludge and left a bad taste. I'm sticking to quality brands with simple natural ingredients from now on. |
Why are reheated fries always so much worse than fries you just purchased from a restaurant/fast food place? | When frying, you quickly boil away the water on the outside of whatever you fry by dropping it in hot oil and dehydrate the exterior of it. Normally, there's something starchy there that then forms a barrier for the inside of your food , which then retains moisture and cooks by steaming. As the steam hit the outside of... |
Red, Green and Blue make all the colors for TVs/monitors... Why not Red, Yellow and Blue? | Monitors emit light, so they use *additive* colour mixing. Paints absorb light, so they use *subtractive* colour mixing. The primary colours of each process are directly opposed. You have red, green and blue in additive colour mixing because those are the peak wavelengths of the three kinds of cone cell in the typical ... |
why does it hurt so much when we get hit in the nuts? | Because they're important. They have a lot of nerves to tell you "don't break these". Any animal that didn't have this response was at risk to having them damaged, and an animal with damaged testicles is less able to pass on thier genes. |
Why is the Wow! signal significant? | Basically: * It's way, way bigger than background, which indicates that it's not a random fluctuation. It's actually so powerful that it would require a source about 1000 times more powerful than any transmitter on earth. Of course, stars and galaxies that put out radio signals are very, very powerful.* It's narrowband... |
Why aren't land speed records set by huge vehicles? | > So I'm wondering why land speed records aren't set by huge rockets tipped sideways on wheels. Their are different categories for the different records, all with their own sets of rules and regulations. There is a governing body, so you can't just "build whatever you want". > And in regards of Piston powered cars what... |
What does it mean to say "my music album is done, except I just need to mix it"? | This means the recording phase is done. Generally, the instruments/vocals that make up a song and album are recorded individually. Mixing is putting these together to make a song, though mastering and other things come after mixing. So an album is a long way from done when recording is complete. |
What do they mean by 'corridors' when talking of the MH370 going missing? | I believe the ping delay allows them to have a basic understanding of how far the aircraft is away from the satellite, they know exactly where the satellite was. Not horribly dissimilar to how GPS works, only with one instead of three or four satellites. The other information they have I believe let's then rule out the... |
Why does it seem normal and natural for older siblings to pick on their younger siblings when the parents aren't around? (Ages 1-8) | As the eldest sibling it is our duty to assert our dominance of course. We are unofficially charged with keeping the baby siblings in line when our adults aren't around. |
why can Tiger/Lion hyrbids exist and yet no hybrid of a Crocodile/Alligator exist? | Tiger is Panthera tigris, Lion is Panthera leo, and both members of the same genus, Panthera. Being from the same genus means that it's relatively likely they can interbreed .. The American Alligator is Alligator mississippiensis, the American Crocodile is Crocodylus acutus, they are not in the same genus, and are not ... |
Can I develop a visible jawbone through excercise or is it just based on genes during childbirth? | Nothing is determined "during birth" your genetics are set at conception. That being said, a "strong jaw" is usually tied to testosterone levels during the developing years. Increasing testosterone levels during adulthood may help to define the jaw line slightly, giving a more "masculine" look, but It's not going to cr... |
China's economy is slowing down, producing factories close. Annual growth was last quarter measured at 6,8%. If economie grows, why are factories closing down? | My understanding is that many of the factories took on debt to expand to meet growth demands. The debt accounted for continued growth at extremely high rates. Because the economy has slowed, they cannot make the debt payments that they had predicted based on the previous growth rate. In other words if my business doubl... |
Why is heat red? | The reason you're imagining heat as red in your mind is probably because you associate it with the color of fire or lava or superheated metal. The quality of having high thermal energy doesnt really have a color though. |
Who are the people commenting on news sites with extremist views and upvoting them? | Assholes who are well liked by other assholes. Part of the problem is a sampling bias called response bias. The type of people who are most likely to comment are the ones who hold the strongest opinions. Those opinions are unusually extreme, and the only people who respond to them are people who hold equally extreme vi... |
As we grow, does our internal dialogue develop before we can speak, or do they develop at the same time? | Internal dialogue only develops as you learn a language. Prior to that, your only means of communication or perception is through your senses. As babies develop, these skills develop as well, such as preferential looking for example. There are a few tests that are done to determine if a baby can determine the differenc... |
How does the spray the ref uses during the world cup work? | I thought they used shaving cream EDIT: apparently this is wrong they use a shaving cream-like substance, from what I can gather it's a kind of foam where all the foam bubbles pop quickly after being sprayed, thus leaving no visible mark.I just wrote a blog article about how it works:_URL_0_ELI5. What is this spray exa... |
Why is it that my iPhone 5s can film at 120 Fps, while my 5D cain only film at 60? | Your iPhone is 8MP, your 5D is 22.1MP. Capturing < 60FPS at that resolution is not only taxing for the cameras processor but also for the storage medium, most cameras actually go down to 3-4MP when doing '120FPS' to achieve this. it is also needless to say that the files that come from the 5D's sensor are MUCH richer i... |
- why your breath smells bad in the morning | Hours of sleeping give the bacteria in your mouth plenty of time to reproduce. This is what causes your breath to smell nasty when you wake up.Bacteria reproduce so there are lots of bacteria. Said bacteria eats, poops and dies. Lot's of dead things and poop smell bad. |
What is Pokemon Go? | You're basically using your phone to turn the world in pokemon. Using your camera and internal sensors, you can find pokemon and capture them. Different parts of the world will have different pokemon |
Why is the skin on your face more sensitive than skin on other parts of your body? | There is a part of the brain known as the sensory cortex. This part of the brain deciphers sensation, so any time you are touched or touching something, the sensory cortex is what gives you this information. The thing is, the sensory cortex doesn't spend its resources equally across the body. There are some parts of th... |
How is all motion relative? Is there an "absolute" motion? What about motion relative to the entire universe? | Motion is relative because in relation to different frames of reference, things can appear to be going faster, slower, etc. So, for example, I am sitting at my computer going 0 mph. But, if you look at the big picture, I have the velocity of the Earth's rotational spin, as well as its speed of orbit. If you are driving... |
Why is it when you way oversleep, you get a headache? | You might be dehydrated. The longer you sleep, the longer you're going without water. Also, you might be over sleeping because you're sick. |
Why can't we generate fake voices as well as we can generate realistic looking CGI? | The benefit of CGI is that you can use it to create scenes that you couldn't easily produce with traditional methods, but it still takes artists a lot of work to do it. Hypothetically, I guess it is possible to engineer a realistic-sounding voice, but there's no point in doing so when having a voice actor is just as go... |
When people are sad, why do they want to listen to sad music? | It's like when someone tries to cheer you up when you're sad versus someone telling you how they've been there and know how you feel so you don't feel alone in your troubles, either one can produce positive feelings. It's basically a cathartic treatment, a release to get rid of the sadness you have or take your mind of... |
Why does rocking back and forth and/or being in a tight enclosed space make an anxious person calmer? | Its close to floating in a mothers womb, it recalls the most basic memories when you had absolutely no concerns at all, and didn't have to do anything, even eat or drink, because it was all done for you. The tight space is the constriction of the womb, the rocking simulates the floating in embryonic fluid. |
Do advertisers use annoying sounds in commercials -- like people crunching, for example -- on purpose? Wouldn't this make people hate the product, like it does with me? | Advertisers are not trying to annoy you, but they are trying to get you to experience their product. If they are selling a crunchy cereal, for example, you can't taste it directly when you see it on the television or hear about it on the radio. But by playing a crunching sound effect, advertisers can show your brain th... |
Is microwaving food bad for you in any way? | The most damage you could do is nuke it so hard that it burns your hands or mouth. You can't get cancer from it, and you're extremely unlikely to burn yourself by standing in front of it. |
Why is it that you never think anything is weird when you are dreaming, it's only when you wake up you realise how strange things actually were? | To be brief, during a dream it's basically your brain taking a rest. So like a computer it shuts off all non-essential functions, and one of them is called the dorsolateral prefrontal cortex. This part of the brain controls things such as memory and judgement. Thus, without this part of the brain "on" you lose the abil... |
Why is pink a girlish colour? When and how did this association start? | Pink was a boys colour back in the 18th/19th century, and blue for girls. It's entirely a fashion thing, led by advertising and the media.Pink was considered a bolder colour suitable for boys. While blue is a softer colour suitable for girls. The current tradition of blue for boys and pink for girls started in the 1940... |
Why does alcohol withdrawal give you such vivid, and sometimes very scary, dreams? | Alcohol suppresses REM stage sleep , which your brain adjusts for as you become dependent. Once the alcohol is removed from the equation, your brain still tries to compensate for REM sleep being suppressed, leading to increased REM activity and vivid dreams. |
Why are JPEG files still used today when internet speeds have increased which would allow for less compression to be needed? | It is desirable to have compression no matter how much speed you have, since this allows more photos to be sent in less time and stored in less space forever. A popular website may send out the same photo millions of times. It adds up for them. The amount of compression in a JPEG is adjustable, so it doesn't have to be... |
Where do metal sparks come from? | They are closer to the equivalent of sawdust for wood. They glow due to the heat from the friction of sawing the metal.Thems are just blazing hot chunks of metal that have been cut and propelled away. You may have seen dudes on reality building shows standing in grinder fire, but that is a really bad idea. Its not that... |
Are D-Waves actually quantum computers? | In one sense, yes. In the most common sense, no. The most famous proposed quantum algorithms, like Shor's algorithm , run on a universal quantum computer. D-Wave is not a universal quantum computer, and instead performs an operation known as quantum annealing. In order for the D-Wave to solve a problem, the problem mus... |
Why is there an anti-african movement in Isreal right now? | Much like the situation involving Mexicans coming into the US, Israel is having a tense situation with people coming into the country undocumented from Africa. The Africans are coming in part because they can get jobs and be paid much more than they would in other places. Israel has taken some measures like building a ... |
Why is the skin of many penises darker than the skin of the surrounding area? | Same reason vaginal areas are darker than surrounding skin. Not only is there increased blood flow in the region, but also greater levels of melanin, which causes dark skin tone. The more melanin, the better one's skin can hold out against the sun and damage. Considering that human males have their first penis on the e... |
Why Americans and Brits have different accents. | Accents are a product of who you hang out with, kind of like your hobbies. If 7 out of 10 of your friends like baseball, there is a very high chance that you will also like baseball, or at least know some baseball terms. Same with accents. Even though Americans and Britons speak the same overall language, we have our o... |
Why is ok to say "your people" but not "you people? | They are similar, but with vastly different meanings and connotations. "your people" means "the people to which you belong". It is often used politely and respectfully. "you people" on the other hand is almost always always followed by a generalization or stereotype. You're no longer talking about the group that the li... |
How did time become universal? | Well there are different [calendars] that some countries use. Most countries do agree on the Gregorian calendar though and use the others in addition to it. There is an organization called the [International Organization for Standardization] though that helped set the [standard time intervals and week lengths etc for c... |
what is actually taking place in your ear when you are experiencing tinnitus? (Ringing in your ears) | There are a variety of causes. One of the easiest to understand comes from damage from things like loud sounds. Your ear has a bunch of tiny hair cells in it. These hair cells each vibrate to particular frequencies or pitches. When one of these is damaged it can't create a pitch sensation properly anymore. One thing th... |
Why can't Koko the gorilla just teach other gorillas sign language? | Koko did teach a friend sign language. Koko's gorilla friend Michael, _URL_0_", 'The claims you 've seen in the mass media of animal communication are exaggerated. The science on this issue is very, *very* weak, and the mainstream consensus is that it may not be much more than the well known "Clever Hans effect" at wor... |
How is it physically possible for one-way mirrors to be seethrough from one side but a mirror from the other side? | They are only partially reflective. If you look at a standard window, you can see through but you can also see a bit of reflection in them, especially if trying to peer into a dark room from a sunny outdoor location. One-way mirrors are closer to reflective windows than true mirrors, and they require the observation ro... |
why do so many people film cellphone videos in portrait mode? | Because that's how you hold a phone when doing most other things. It doesn't occur to them or they don't care. It's easier to hold a phone one handed especially with how huge phones are these days.1) That's how people hold their phones 2) They're usually filming something that goes up and down, like a person, or a tree... |
Why are mobile websites much faster and more responsive than the dedicated App they beg you to install? | Follow-up question: does it have something to do with revenue? Are there more ads on the horrible apps? Good question, OP!I always preface my explanations with this being ELI5 I'm going to try to keep my language as "shapes and colors" as possible because it is how I would want something explained to me. So webpages ge... |
Why does smoking a cigarrete make me have to poop? | Nicotine is a stimulant and has that effect on your digestive system - it speeds up transit time. It's similar with coffee. Interesting related fact: coffee and strong alcohol speed up your stomach emptying, which in turn makes you feel less uncomfortably full, hence why you have these at the end of a massive meal |
What did the Marbury vs Madison exactly deal with and why is that case so significant? | The *extremely* ELI4 version is that *Marbury v. Madison* established "judicial review" in America: The idea that a court's job isn't just to decide individual cases based on the law, but also decide if laws themselves are in line with the constitution, and strike them down if they aren't. This is a big deal, as judici... |
WHY do females ejaculate during intercourse? | Actually, I think this is a really good question. [The Truth About Female Ejaculation] > Since 2000, an increasing number of researchers have suggested the liquid may come from the Skene's glands, which are located on the anterior wall of the vagina around the lower end of the urethra. But the truth is we simply don’t ... |
What happened in history to associate the Jewish culture with controlling the media? | There literally are many jewish men in powerful positions within the movie and TV business. Here's a short list: *Gerald Levin - Time Warner, HBO CEO*Michael Eisner - Disney CEO, Succeeded by Bob Iger .*David Geffen - DreamWorks, Geffen Records*All the Warner Bros. *The Weinsteins *Spielberg*Louis Mayer - Founder of MG... |
Why do researchers who do tests on mice have to comply with strict ethical regulations, and yet it is legal for me to use mousetraps and very painful poisons to remove them from my house? | Research is just highly regulated in that any research animal must be treated with the utmost respect and dignity because its life provides us with valuable information that helps either their species or ours. Pest animals are slightly different in that they have the potential to carry disease, so they must be removed ... |
this proof that 1 + 1 = 2 | The theorem states that if sets a and b each have 1 element, then being disjoint is equivalent to their union having two elements. The comment at the end refers to how the union of sets is used in their definition of arithmetic. Going through the proof line by line probably wouldn't be informative as it just refers bac... |
What is cloud engineering? | A very, very high level explanation -Computers, networks, security, and storage can combine all together to make up what is known as a cloud. In a cloud each of those components can grow or shrink based on how much they are needed. Cloud engineering keeps all of those things up and running so companies can run applicat... |
Why is the heart associated with the part of the brain responsible for emotions? | I think emotions were traditionally associated with bodily organs such as the heart, from long before modern science determined that emotions arise in the brain. The heart was supposed to be the seat of love.Another example would be the expression 'to have guts', implying that courage arose from the stomach. And of cou... |
Why is the subject of blackholes so fundamental when learning about the nature of the universe? | There are two prevailing theories that rule in physics: general relativity and quantum theory. General relativeity deals with really big or massive things like stars and galaxies, while quantum theory deals with really small things like subatomic particles. General relativity describes gravity, while quantum physics de... |
Data Compression. How can information be reduced in size and still be the same? | Let's do this in a really simple, visual kind of way. Here's two ways of expressing the same thing: WWWWWWWWWWWWWWWWW 17 W's. Now, they both show the same thing. But the second takes up only 6 characters , while the first takes up 17 characters The same basic idea is how data compression works. If you've got a piece of... |
Why is Hypothesis part of the Scientific Method? | It is possible to gather data with no hypothesis, and then create a hypothesis and then test it . However, most a hypothesis is needed to tell you *what data to gather.* For example, if I have a hypothesis that protein in the diet affects the fertility of crows, then I need to gather a population of crows, divide them ... |
Why Internet Explorer is bad. | Copy and pasting from the multiple [times] this has [been] [asked] [before]: Competition in browsers is good. IE duked it out with the Netscape until they "won" the browser war by giving it away free and bundling it with the world's most popular PC operating system. Netscape went belly up and Microsoft decided to rest ... |
Why do some websites tell you that they use cookies and have a 'got it' button, if almost every website uses cookies? | The EU made it mandatory for websites in that region to inform users that they're putting a small file on the users computer, that can be used to track that users browsing habit on that and other sites. Privacy laws are a big thing in Europe, so it was a long thing common. It basically means that you now consent to the... |
How do surfers survive wipe outs on enormous waves? | They relax until the wave lets them go then they head for the surface. By relaxing they don't get an elevated heart rate and can manage to hold their breath just fine. Remember, huge waves break into deep water so you're not going to get pile driven into a reef like at Pipeline and Teahupo'o Pretty much the longest you... |
How does something like a coral colony or a Portuguese Man o' War (the animal), which are made out of many smaller organisms, know what shape to take? | Man o'War grow as a stem, like a backbone, that is segmented into buds that grow into a cluster of all three types of the specialized zooids. The stem keeps growing with age, with the oldest and largest zooids at the back, and the stem growing forward with the youngest zooids and new buds at the front. Because of the c... |
How does your eye react to small things that you can't see and close on its own. | Your brain reacts to a threat it "sees" before it processes what it has seen. That combined with your body naturally also getting on high alert in this situation help it to respond quicker than what we can physically see. Theres always a slight delay between what is happen and what our brain processes because the nerve... |
What can cause stuttering on a person who didn't stutter before? | you might be like me in that you don't know the best way to put what you are trying to say into words because of all the thoughts running through your head. that's my 2 sense |
In what sense slower waves carry more energy? | They don't. Perhaps you were hearing a reference to how *large* waves carry more energy, and in water these tend to be farther apart than small waves. |
Why are DVDs region locked? | So that DVDs can be sold at different prices in different regions. Without it, someone could buy the DVDs in a cheaper region, then sell them in a more expensive region to make money. That would force the price of DVDs in the expensive region way down, and the maker of the DVD wouldn't make as much money both by sellin... |
How owning a server machine is useful. | There are several benefits, but it depends on how you want to use it. Here are a few: * You can build your own web site - you yourself will handle and control the contents and maintenance of it locally* You can have a host computer server and buy cheap network clients, that way you only need to maintain one system rath... |
Why does dictatorship come with poverty | Because the more money the populace has, the better educated they will be. And the better educated they are, the less likely they will be to put up with a dictatorship. Also, in more affluent societies, there is wealth distribution away from the government, which means that economic pressure can easily be applied to th... |
"Light Pollution" and why it prevents us from seeing stars in cities | When there is a lot of light on the ground, some of it goes up and makes the sky look brighter by lighting up dust in the air. And just like seeing a flash light in a dark room is easier then in a bright room, stars are easier to see in a dark sky then a bright sky.For the same reason the sun makes it so we can't see s... |
Why flies come right back to f*** with me even after I swat at them? | They don't even know what you are. They don't understand the difference between you and an inanimate object. For all they know, your hand swatting them is an entirely different thing from your face or body. |
Why were most presidents attorneys before taking office? What is it about the legal profession that creates so many leaders? | Our societies are founded on law; which if you think about it are just promises made by the general population to behave orderly - so to lead a society founded on law & order you have to be well versed in the laws which dictate how society conducts itself. Also the social circles of attorneys and politicians intersect ... |
What happens in your body to give you a "dead leg"? | Scientific term of a dead leg would be a quadricep contusion. Basically it is your muscle being crushed into your thigh bone. There are two types of contusions: Intramuscular which is a tearing of the muscle within the sheath that surrounds it. This means that the initial bleeding may stop early because of increased pr... |
If it's bad for you to eat late at night does that mean people who work night shifts are less healthy? | The eating late at night stuff has been debunked. What actually happens is people who usually eat late tend to gain weight because consume more calories - but this isn't a factor of eating late, but simply a factor of eating _more_. |
How does selective breeding work? | We can selectively breed any species that mates. We have made glow in the dark jelly fish and non-venomous snakes using genetic technology, but a lot of people forget that selective breeding began with the dawn of our civilization. We've selectively bred Chickens, Cows, Pigs, Corn, Bananas--everything we eat was select... |
With 1:175M odds, and the jackpot being $500M, why wouldn't you buy one of each possible lottery ticket? | You may end up splitting the take, and then you pay taxes. The odds are long, but if someone else winds the pot, then you're splitting $500 million with another person, and getting only $250 million. The government takes 50% of that in taxes , so suddenly you've paid $175 million to make $125 million. Oh, and if you wa... |
What even is spacetime? | Imagine a picture is two dimensions. Three dimensions is more like the world we live in. If you add time, that becomes the fourth dimension. All 4 dimensions of the 3 dimension environment plus the time factor is described as space time. _URL_0_ |
Period accurate t.v. shows and movie props. | It depends on the item. Cars and most props can be rented from collectors, that's one way for a collector to subsidize their hobby. Clothes are just made by costumers, old ones would be too fragile. Where can you get it, also depends on the item, from Mecum auctions to eBay, collectors are out there someplace. |
Can someone explain to me how compression braking works? | I assume you mean a jake brake. First, start with an engine. Suck, squeeze, bang, blow. * draw air and fuel into the engine* squeeze it* light it on fire which drives the piston down forcefully * push the remains out the exhaust Now imagine an engine with the fuel removed. * draw intake air, without fuel, in.* compress... |
How can half the mass of some foods be sugar? | Yes, it's a different form in part. In jams and such, much of the sugar is in the non-fruit part itself or soaked into the flesh of the fruit. Taste strawberries from a jam vs normal or dried strawberries. The reason is twofold. The sugar helps to preserve the fruit and keep it from spoiling and to improve it. Along wi... |
Why do hotels call it "continental" breakfast? | It is based on traditional breakfasts held on Continental Europe . It was inherited from our British originsHotel Manager Here: While it has already been answered; in the industry, a continental breakfast refers to a "cold breakfast". It is based off European traditional breakfast of pastries, baked goods, coffee & tea... |
How do prosthetic limbs work above the elbow or knee? | So in most cases, above the knee amputees actually don't have powered or robotic or hydraulic knees. They are very very expensive, heavy, and mostly experimental. Normal people don't get them. Most use a "free knee", which means they must land on it fully extended so they can weight bear on it. Then when they step onto... |
Why does ice cream taste sweeter after melting? | Your tongue is better able to taste sweetness when the taste buds are not cold. So letting the ice cream melt somewhat prevents it suppressing your tongue's response. |
why are humans the only animals that have periods? | Humans are not the only animals that have menstrual cycles. Other primates, some bats, and these little mammals called elephant shrews have menstrual cycles. But most of the time, all the uterine lining is reabsorbed if there is no pregnancy. Humans reabsorb some of the uterine lining as well, but not all of it. Most m... |
Why can't Flint just switch their water back to their old water source to fix the problem? | That's pretty much what they're going to do, but right now, there's still a bunch of lead-y water soaking in the pipes, and no good way to scrub it out. |
How can pro gamers stream music while playing without getting in trouble? | IT would take the copyright holder of the music to go through the effort of trying to sue them or take legal action, etc. And that would be only if they didn't think it was a good thing for their music So you can go through a massive legal effort to deal with this, for pennies in return and bad PR, or just enjoy that p... |
Why don't the Palestinians push for enfranchisement within Israel instead of a separate state? | Historically the, Israelis have been more opposed to a one-state solution than the Palestinians. This is because Israel is the "jewish state" and it is perceived that creating one state for both Israelis and Palestinians would compromise this identity. Furthermore, Palestinians have higher birth rates than Israelis, wh... |
Aside from ethical reasons, why don't citizens physically take over a corrupt government and start a new one with new legislation? | > What's stopping people exactly from physically taking over the government? Two things, one immediately practical, one more abstract . As to the first, the US government--for all its problems--is *incredibly* well organized compared to the government of Ukraine, and it's got a *lot* more people with guns it can deploy... |
Why is it that negative emotions can feel...nice? | When you are feeling down, your body does two things. 1 - It tries to reverse this with happy feelings, caused by dopamine and serotonin. People who can't do this suffer from clinical depression. 2 - Because you feel sad, your happy moments feel nicer. If we never felt lonely, then being with friends wouldn't be as nic... |
Why can we take hi-def photos of galaxies light-years away, but yet can only get little pixel pictures of Pluto? | With a pair of binoculars you will be able to view huge skyscrapers from miles away. But you can't see a gnat on a car just 50 yards away. Same idea basically. Galaxies are massive objects lit by the billions of stars within them. Pluto is just a speck reflecting a tiny bit of light from the sun. |
So what exactly are Hilbert's Problems? | The problem here is that you're asking for a layman's explanation for something that really doesn't have one. In order to understand this specific problem you need to at least take a short lecture in the basics of group and field theories. Some of these problems however can be explained quite simply , while others cann... |
What's the difference between a theory, a theorem, a postulate, a law, etc? | I'm no scientist or mathematician, but here is my understanding: A **postulate** is a basic fact that we assume to be true when we build a theory. For an example, one of Euclid's postulates is that for any line and a point not on that line, there will be a line parallel to the first line that runs through that given po... |
why do humans perceive numbers in a logarithmic way instead of a linear way? | Going from $1 to $8 is a 700% increase, while going from $501 to $508 is less than 2%. It's more about percentages than raw numbers. |
In cases where people die of an allergic reaction, why is the reaction the body chooses one that kills you rather than letting in whatever its trying to keep out? | Allergies are a *defect* in the way our body's immune system works. Because having an extra-powerful immune system mostly kept our ancestors alive against many *real* threats, evolution didn't weed these people out, so we inherited this problem. |
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