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We have vitamin A , B, C, D, E and K but not F, G, H, I and J. Why? | Vitamins A through E were named alphabetically. Vitamin K was discovered later and is essential in coagulation. But when they name it they spelled it koagulationFollowup question. Why did they decide to have 12 B Vitamins rather than use the rest of the alphabet?', "To keep it clear, vitamin naming is a mess and change... |
Why does exercise such as running or cycling feel much more strenuous during the first couple of minutes? | Blood is constantly pumped all around our body to supply oxygen to all our muscles. In the case of running and cycling, we predominantly use our legs, but seeing as though we still have a regular blood circulation, our muscles find it difficult to work comfortably due to the lack of oxygen for the task they are perform... |
Why do I feel like I'm going to vomit when calling a stranger on the phone? | While I am not a doctor, not your doctor, and this is not medical advice, it sounds very much like you are experiencing a panic attack, possibly brougt on by social anxiety. The same thing happens to me, on the phone. You might wish to seek treatment. |
How is colour and temperature related when something is burning? Also, why does the Sun appear white? | The purple may be an artifact. On some digital cameras, infrared shows up as purple. The blue filter lets some red through. I use the selfie cam on my iPhone 6 to test IR remote controls. The main cam does not do that. |
Why were people shown as having pure white skin in ancient asian portraits? | Pale skin was in China, as in Europe at one time, a symbol of the upper class--you cannot avoid being tanned if you perform outdoor labor. It's long been represented in art, dolls and make-up fashions as a beauty ideal. |
How did BBC get the seemingly impossible footage for David Attenboroughs Life series? | Many many many hours of waiting. You can watch documentaries on how they film those documentaries. It involves cameramen being out in the field for months, being bored out of their minds while waiting for that opportunity to get that perfect shot. |
How to calculate Hamming Code | adapted from wikipedia 1. Number the bits starting from 1: bit 1, 2, 3, 4, 5, etc.2. Your parity bits are the ones in position 1, 2, 4, 8, 16, 32, 64, etc4. All other bit positions are data bits.5. Each data bit is included in a unique set of 2 or more parity bits, as determined by the binary form of its bit position. ... |
How Pirate bay can be so openly public and not be shut down. | They keep getting shut down. When they are shut down, they start the website back up again in a different country. They've been in a lot of countries now. |
What does "frozen assets" mean? | Imagine you have a big stack of quarters and toys split between piggy banks and toy shelves in each of your friends houses. You want to trade them all for a dirt bike, but mum says no. She tells all your friends to not let you into their rooms. In your example, the quarters are Millions, the toys are military equipment... |
In movie scenes where a kidnapper asks for ransom money, why do they ask for non sequential bills? (Extra Credit: What are "Marked Bills"?) | Because marked money can be tracked, sequential bills can be tracked. In the case of the Lindbergh baby they wrote down the serial numbers of the bills and used them to track down the kidnapper/killer. So lets say you kidnap someone and they pay the ransom. They keep an eye out for the bills they marked and notice them... |
How can a modern ship sail into a known storm/hurricane? | Not a sea captain, but at least two things here: The ships today have been built to handle huge storms, so they are able to go through them without too many issues that would compromise seaworthiness of the ship. But these storms are also so large usually that it isn't as feasible for a slow ship to get around a storm ... |
Why is there a difference between girl bikes and guy bikes? | In the early part of the bicycle, women sill wore dresses and the lowering of the top frame bar was to allow the wearing of a dressWell, there is the step-through frame, where instead of having a horizontal tube between the seat and the handlebars, that bar is lower down. This allows women to get on the bike more comfo... |
What is happening in our muscles when we feel the urge to exercise? | Personally, it's stress that causes that irritability/restlessness. Cortisol keeps your body in a continued mode of being alert and ready to fight/run. Exercise lowers cortisol levels, eliminating stress and causes your body to relax the tension it has built up. Stress usually means that your body doesn't feel comforta... |
What is the significance of the recent French presidential election? | Over the last couple years, we have seen a populist trend among voters. People are voting for stricter immigration restrictions, dissolving the EU, adopting a nationalistic approach to governing, among other decision-making policies that would be consistent with the alt-right conservatives in America, or the pro-Brexit... |
The WAR statistic people talk about in baseball. | WAR stands for Wins above replacement. It's basically the amount of wins a certain player is valued at above a player of the same position at the AAA level. _URL_0_ |
Why is gmail (or most email service) free? | It allows google to collect a shit ton of data about you & charge more for advertising directed at you online. If you are not the customer you are the productWhen an internet service is free, *you* are the product. Email providers give you email service in return for information about you so they can sell targeted ads.... |
What are the defining differences between streets, roads, avenues, boulevards, etc.? What dictates how it is designated? | **A boulevard is two lanes in each direction with a median of trees or greenery running the length of it.** **An avenue is often two lanes in each direction and in a nicer part of the area.** **A street can be any number of lanes in each direction, but is generally associated with a town or city or suburb.** **A road i... |
Why is the majority of the human population right hand and right eye dominant? | So there is definitely a tendency towards right handedness in people, but I would also point out that right now, there is social pressure on that as well: many left-handed children born in the 90s were forced to acclimate to right-handedness. When I was in preschool, I had to wear a sock on my left hand all day every d... |
Why is it we pass out from standing too long with our knees locked, but not when we are lying down? | Locking your knees causes issues with blood flow which in turn causes you to pass out. You don't lock your knees when you're laying down so it doesn't really apply. |
- What are both sides of this birth control debate and Congress? I've only heard the Rush Limbaugh stuff so I'm confused and would like as unbiased an explanation as possible | So Obama thought that religious affiliated institutions should provide healthcare through their insurance companies to their employees. These religious institutions didn't think they should have to provide healthcare options that provided birth control because they morally object to birth control. Republicans jumped on... |
Why do police in America not seem to carry or use much non-lethal weaponry? | They do carry non-lethal weaponry. But have you considered that when that non-lethal option is used, it's not really newsworthy? Can you imagine a front page reddit post that says "Officer uses taser to stop suspect, who is sent to jail without injury. Officer goes home and has spaghetti with his family"? You're only h... |
What is the purpose of Information Technology Infrastructure Library(ITIL)? | At its most basic level, ITIL is really a set of best practices for IT Service Management - without a methodical approach, Service Management can be something that's done on a fairly ad-hoc basis without any specific direction to it. Although ITIL doesn't seek to specifically set in stone how things should be done, as ... |
Why is it when people see an incredibly cute baby one of the reactions is to 'eat' the baby? Or bite at it? | _URL_0_ Take a read of the article above. To put it basically it is because the smell of the baby activates the same receptors of the brain as smelling nice food.I feel the same way with cats, because they're so cute I need them inside of me |
luxury tax and sales tax are different things? | Sales tax is applied to everything. But on top of that the government can also impose extra taxes on certain products. So for a "luxury tax" that means that the government needs more money and taxes certain products a little more with the justification that if you can afford those products, then an extra 0.5% or so isn... |
Why is most of society monogamous? | In the way olden days, if you went around having sex with anyone, you'd have no idea who actually fathered the child. Cultural norms grew around the realization that if you were monogamous, you could safely assume the identity of each parent. This is critical to the natural human family nucleus. We don't see this more ... |
Why Internet connections are fastest in South Korea? | > People in the United States basically invented the Internet. [people working at CERN in Europe basically invented the internet]> People in the United States basically invented the Internet. So U.S. connections must be the fastest and cheapest in the world, right? This is not a valid conclusionThere are a lot more peo... |
Marx's Labor Theory of Value | Essentially Marx said that the value of a commodity is equal to the labour that went into it, including the labour that built the tools used to make the item, or the buildings that housed the workers etc. It's contrasted by Adam Smith's labour theory of value, which says that a commodity is worth whatever labour somebo... |
Why are many SE Asian countries mainly Muslim, when they were colonised by European countries? | Those countries had Muslims well before Europeans arrived. Before the Europeans spread all over the world and gobbled up all the land they could take, merchants and sailors from the Middle East had already spread out to distant regions in Eurasia. |
how the US are allowed to kill civilians with drones. | It's not really a question of being allowed or not. There's no authority above the nation state that can step in and lay down the law - all that exists are states and deliberative bodies composed of states . If a state is powerful enough to do something without the rest of the world finding it a worthwhile risk to inte... |
What happens when you're "clenching" your brain/head? | > Is there a name for this phenomenon Isometric muscle contraction is what is being performed, and the result which you seem to be interested in is a temporary increase in blood pressure and drop in blood oxygenation. > what is your head actually doing? The muscles in the head and neck are building tension without actu... |
How do sea shells form? And what enables them to grow in size? | They are formed by the excretions of the animals inside. Snails and such, not the crabs or other things that live in emptied shells. |
Why do people use 0-60 mph to benchmark the acceleration of cars? | Because the actual benchmark is 0-100 km/h, which get's rounded down to 60 mph. 0-100 is a nice round number, and since everyone except the US uses the metric system that's the standard. So the significance is that 60 miles is about 100 km.I believe its because 60 mph is the closest whole number too 100 kmh , which is ... |
What's the difference between Space Opera and Sci Fi? | Science fiction is any work of fiction set in the future that deals with technology more advanced than our own. Space opera is a particular type of sci-fi that doesn't really care much about the specifics of the science and technology as much as it deals with grand narratives about galactic empires and grand heros. Sta... |
When should I use recirculated air vs. fresh air in my car? | Recirculating air will heat it faster, so yes. You should also recirculate your air when you are in a dirty area Always use recirculate when you are driving on [I-5 near Fresno/Coalinga RD in California]In my experience recirculating will cause some problems with the windows fogging up in the cold weather.Here's one fo... |
Are there any major nutritional differences between brown and white eggs? | There is no nutritional difference, but markets can charge more for brown eggs because uninformed consumers think that they are healthier. I have had people say this to me. Then I show them the eggs that my sister raises, all different colours. "So, is the blue or the pink egg the *healthier* one?" I'll ask. Brown eggs... |
What is happening to New York City? | Well a lot of small businesses that have been here for decades are being driven out by corporations and upscale businesses due to rising rents and taxes. Many of these businesses give NYC it's unique flavor that you can't find anywhere else. For New Yorkers like myself it hits home hard seeing stuff like this happen. T... |
Why do violinist always play the instrument on their chin? | The left hand of the violin player is the one playing the notes and it has to be free to move up and down the neck as required, not clutching the instrument. The strings seen in cross-section form an arced shape, not flat like a guitar. The bow has to be able to "attack" through a range of angles so that it touches one... |
How does a satellites stay positioned on a geostationary orbital target that is not on the equator? | Geostationary orbits are only above the equator. Geosynchronous orbits are at the same distance but not necessarily in the plane of the equator. Communications satellites are not necessarily geostationary or geosynchronous; if there are enough of them all at different orbits then they can cover most of the earth.Have y... |
What is the point of harvesting "likes" on Facebook if you are not directly promoting a business? | ALY5: It's the same reason that people try to get karma on Reddit, lad. They want recognition. They want to feel agreed with.its the same thing as people harvesting karma. it doesnt do anything, but people do it anywaysBecause when I "like" something, it shows up in my feed My FB friends who see this in their feed may ... |
Why does it hurt more to get an IV put in your hand than in the crook of your arm? | The hand has more nerve endings because you need to feel what you're doing with your hand while doing complex tasks . The high density of "useful" nerves to sense touch, temperature, etc, also comes with a lot of nerves that detect pain. Arguably this serves a purpose, allowing you to detect/avoid injury while using yo... |
Why do some people with special needs have such similar facial features? | Because people who have the same problem generally have the same cause for that problem. Take, for instance, Down's Syndrome. It's caused by having 3 copies of the 21st chromosome instead of just two. Every single person with Down's has this problem, and every single person with this problem has Down's. Along with vary... |
How do poems translated from one language to another still rhyme? | The translated form is altered in order to rhyme, almost always. Usually the translator is also a poet who understands the original poet's style, so they'll try to keep the meaning and meter as close as possible to the original, while finding rhyming words that fit. EDIT: Here's an example from Charles Baudelaire, from... |
Can people have smaller than average organs and what does it mean? | If you made it this long with little to no problems, I wouldn't worry about it. Best thing to do is talk to your doctor about it. She would probably feel bad if she knew what she said made you uncomfortable and she didn't know/therefore couldn't explain things for you so you could feel better. I'm almost 36 and was 7 w... |
why is it that flies seem to appear out of thin air so quickly (even indoors) when rotten things or feces are nearby? | Fun fact, up until recently in modern history people simply believed that things like garbage and feces spontaneously generated life because like you said, it seems like there are no flies, then trash and boom, hella flies. The truth is a little more boring and gross, it's simply that flies and maggots are all around y... |
What are fair split screens? | If you're going to ask about a current Reddit post, [it's helpful to include a link to it in the question]. Split screen video games are where you have multiple players, each with their own view on half the screen. Think playing Golden Eye/Halo on a single system. One of the problems you run into here is that the other... |
What are mirrors made of? How does it get that reflection quality? | They used to be glass that had electroplated silver on one side and then black paint on top of that. And they also used to be really well polished metal. Now a days it is usually much cheaper aluminum on glass/u/Kamin_of_ressik explained what they are made of, so I will explain their reflective properties. White object... |
I'm far sighted. Are there reverse-blurred images that would appear clear to me? | So you want something like this [shortsightedness optical illusion]. but for farsightednessThe opposite of blurring is a technique called [unsharp masking] It effectively increases contrast at the edges in a photograph. Here's an [example picture] with blurred text at the top and "unblurred" text on the bottom. So yes,... |
Why stage 4 cancer is "uncurable" | At stage 4, the cancer has spread throughout the body to multiple locations distant from the original tumor. It's considered uncurable at that point because it's not feasible, or really even possible to any degree of certainty, to remove all the tumors. At that point, the odds are pretty good you've not only got the tu... |
Why don't console developers re-release older consoles? | Because almost nobody buys them. The market for any electronic device drops through the floor as soon as a newer version comes outIt's happened a few times, actually. Nintendo re-released both the NES and Super NES. The 1993 revision of the NES took some design cues from the Super NES, but otherwise was identical. It w... |
Why does the US government bail out General Motors every time they go under? | > every time they go under You mean once?', "You are forgetting that the lowest base model Tesla would be over $100k if it wasn't subsidized by the US government. GM makes cheap crappy cars pretty much and they employ a LOT of people. You don't want all those people on unemployment and without jobs. They probably would... |
Reasonable Force Laws in the UK | Basically it boils down to this: > The prosecution must adduce sufficient evidence to satisfy a jury beyond reasonable doubt that the defendant was either: > not acting to defend himself/herself or another; ornot acting to defend property; or not acting to prevent a crime or to apprehend an offender; or if he was so ac... |
Are US Congressional members actually exempt from insider trading laws? Is this okay? | Yes, and define "okay". Insider trading is a broad statute that basically prevents people from trading on material knowledge the general public doesn't have. Due to the broad policy implications of being in congress a given congressmen almost always has some sort of inside information. Be that something specific like "... |
What happens if Hillary Clinton is charged with an offence by the FBI, how would this affect the Presidential race and would she be allowed to continue? | Legally speaking, it would have no impact. Nor would a conviction, or even being in jail. Article 2 of the US Constitution lays out the requirements for being elected president, and none of these factors enter into it. In fact, not having an indictment would be a terrible, terrible requirement. Imagine if the day befor... |
Why do children seemingly enjoy being tickled but grow to hate it as adults? | Plenty of adults like being tickled and plenty of kids hate being tickled. People often laugh involuntarily when they're tickled; this is a defense mechanism to signify submissiveness. People will often panic quite a bit because they don't like feeling vulnerable; this is because being tickled activates the part of you... |
Why is liquor supposedly better the longer it is aged? | Not all liquor and wine improve with age. Many are designed to open immediately. With whiskey, for example, the process of making whiskey involves aging for years in a barrel. The alcohol will cause chemical reactions with the wood of the barrel, which gives it it's iconic "whiskey" flavor and its caramel-brown color. ... |
Carbon-14 half-life and why it's only useful for dating organic materials less than 50,000 years old? | I think you're confused as to what a half life is. A half life is how long it takes for half of the material to decay. I've never heard of a full life. For example, take 100g of Carbon-14. After ~5,700 years you'll have 50g of Carbon-14. Now take another ~5,700 years and that 50g will be cut in half to 25g. Then in hal... |
. Why is IPhone so popular? The new 6s has 2gigs of ram the same as my old Galaxy 4 and half as much as my note 5. | Like every Apple product, it is user friendly. It is really hard to screw anything up on it, and it is designed to be intuitive. How it is marketed has something to do with it too. IF you're wondering, Specs on cell phones are actually fairly meaningless for the most part. As long as specs are "sufficient" thats pretty... |
Why to they have traffic reports on TV? How does it benefit only people watching at home? | People may be leaving the house soon, or they are waiting on somebody to arrive. And I suppose its because people watching the news want to see the traffic. If every time they had a traffic report everybody changed the station, they would stop running traffic reports.I've only seen it on morning news. They assume most ... |
When a city loses power (like in a lot of movies), why aren't all the lights going off at the same time? | They call it a power grid for a reason, it is an actual grid. The main power lines come in from the power plant, which are then routed to different areas, then routed to smaller areas in each area, and so on and so forth until it reaches the end user. Think of it as an upside down tree. Trunk is the main line, branches... |
How long would it take to accelerate to the speed of light in space so that the crew wouldn't suffer any negative effects from accelerating too quickly. | You can't accelerate to the speed of light, and still have the crew made of matter. So let's presume you meant 99% of the speed of light. People deal well with 1g, 9.8m/s^2 of acceleration, and can stand 1.5g for a pretty long time. But to allow for safe sleep and digestion, 1g should probably be your limit. After a ye... |
What does the US government do with the millions of dollars worth of bitcoins they seize from online black markets? | The last time they seized a bunch from Silk Road, they [sold it in an auction], like with other seized property. They sold it in 3,000-coin chunks. As for newer stuff, I *think* [this is the FBI's wallet number] so you can see they still have over 144,000 Bitcoin. |
Why does handwriting differ? | Out of personal experience, I remember when I first was learning to write, my teacher had a certain look to her handwriting I admired. So, I mimicked her until I picked up the handwriting. So to answer your question, it depends. If you like the font/style of the educator, chances are you'll mimick their handwriting. Yo... |
"Era of Bad Feelings" | The Era of Good Feelings was a period of American history that fell between major conflicts, expectations were high, the major political parties cooperated and people got along. The Era of Bad Feelings is just a cloy way of saying now is a time of conflict, lowered expectations and partisan bickering. |
Why is it that pretty much everyone enjoys music? | I used to work on an assembly line and we were allowed to have small radios on our benches while we worked. My supervisor was a really cranky old lady that just never seemed happy about anything. I was working near her desk one night and to as not to offend her I asked her what kind of music she liked in order to find ... |
how does your digestive system get liquids separated to your kidneys? | It doesnt't really. The digestive system mostly absorbs everything it can from the food into the bloodstream and the rest of it comes out as poop. The kidney then takes the blood and removes the things you don't really need in it Capsaicin, the substance responsible for the spiciness of pepper, is mostly absorbed into ... |
Why don't/can't governments just illegalize smoking? | The tobacco lobby is very powerful, smoking is a huge economic industry, tons of people like smoking, lots of people object to the government acting as a nanny and regulating our well being, and prohibition has a poor track record. It's a losing proposition for just about the entire country. |
What is happening in the brain when someone has an "Aha!" moment? | One cell in your brain makes a path to another one, and voila you have a scenario that you reference for the rest of your life, unless you dont use it often, then it deteriorates. I don't remember all the specific terms cuz its early in the morning. But i suppose that IS what I'd tell a five year old", 'I think this wo... |
Why is the unit of measure placed before the value for currencies? | It's not always. Cents or other symbols denoting fractions-of-a-currency often are placed after the number . And euro symbols are often seen after the number in signage in some countries and sometimes even in the middle But for financial transactions it's usually up front as a matter of convenience for the observer, pa... |
How do they get the bubbles inside the soda? | The bubbles are carbon dioxide which is soluble in water. The main method they get the CO2 into the soda is a two step process. The first step is chilling the soda by running it through a chiller. This is necessary because CO2 can stay dissolved in cold liquids much better and warmer ones. The second step is passing it... |
Why did I have to throw away the lid from my water bottle going into a stadium in Hamburg? | Removing the lid hampers the bottles ability to be used for other nefarious-type uses. It's hard to throw water bottles at the field/other team/your brother-in-law if most of the liquid and subsequent weight is removed while tossed. Also, removing the cap puts shame on the bottle which might make it think twice before ... |
How does the 'scene' community work? Where
is the motivation? Where does the money come from? | > How is it that you can get TV shows moments after they're done airing, without paying a cent? People recording TV through an input on their computer, encoding it in real-time with good CPUs, and immediately uploading it when the show's finished. > Who is getting paid for all this hard work- it can't be all just for f... |
Could a President-Vice President couple pardon each other? Could the President pardon the VP, then pardon resign allowing the VP to pardon the President? | There is no reason a President cannot pardon the VP or vice-versa. Richard Nixon resigned in 1974 and was pardoned by his previous VP Gerald Ford. This pardon does not prevent the impeachment process which could remove the previous VP from Office. |
How is there wifi on buses (ie. megabus) and not on airplanes? | There is WiFi on many planes. The reason there wasn't for a ling time after buses got it is for safety concerns. |
I googled Iran in the 1970s and none of the women wore burqas. Why has that changed? | Because they had a revolution in 1979, which led to the establishment of an Islamic republic & restrictions on the rights and freedoms of women.They still don't wear burqas. A [burqa] is a kind of all-over veil, a garment that covers the entire body, including the face, with just a small slit for the eyes. It's very ra... |
How does our immune system differentiate between good and bad bacteria? | You 'd need a PhD in immunology to get any rigorous answer. One overly broad way to answer "how does our immune system differentiate" is simply: it doesn't. If you raised a primary immune response to every bacterial cell you 'd be in big trouble. Gut bacteria have evolved with us to either work to our benefit or to wor... |
If jury decisions have to be unanimous, why aren't there way more hung juries? | [Not all juries need to be unanimous]. I believe that some courts don't allow juries to return hung until a certain amount of time has passed, in order to encourage discussion. |
How animals like Octopus are discovered to get "bored" | "Bored" is a human term, and it's associated with a set of negative behaviors. The "cure for boredom" in humans is additional interaction. When an octopus is in a closed area, after a while they start to take on some of these same behaviors, and they stop when they have more interaction. Thus the term "bored" gets appl... |
How do airplanes take off? | They use their engines to push them down the runway faster and faster, until the amount of wind passing under their wings is enough to lift them into the air. |
why aren't laughs different in the same way languages and accents are? | They absolutely are. It might be harder to detect because, well, it's a semi-involuntary sound, but there are, in fact, different "laughter" dialect. Another point is tat laughter hardly ever needs translation, so |
How much of a connection is there between being good at basic math and mastering algebra, calculus? | Engineer here. It's still a large gap from High School maths to Math analysis / Calculus. College Algebra is more accessible . From my experience. To pass with good grades you need to study a bit BUT solving A LOT of exercises. Maths in college are a mix between understanding and remembering what you should do. *You ha... |
What made militant Islam what it is today? | I think it's similar to the "Know Nothing" party in the US that developed. It's a counter movement to enlightenment, to be proud to be ignorant, because knowledge is frightening to long standing thoughts about the way the world works, such as religion. Couple that with some seriously barbaric text in the Koran that cal... |
how does dust form? And what generates the biggest amount of dust? | A lot of people will tell you it's mostly dead skin cells, but that's obviously not the majority of dust. You can easily verify this by leaving stuff in a non climate controlled storage unit for a year and coming back to find a layer of dust. Dust is mostly just particles of dirt and whatever else that is light enough ... |
what is the difference between the cheap batteries that come in toys and major brand batteries, like Duracell, and why does the latter last a lot longer? | Usually toys come with an "extra heavy duty" battery which is a generic name for [zinc-chloride]. These batteries are really bad. An AA might hold 1.5 watt-hours of power. Some really cheap toys come with "heavy duty" batteries or zinc-carbon. These are the worst and an AA might have 1 watt-hour of power. Duracell is a... |
why is online gambling illegal in most places, but things like draftkings and fanduel which pay out real money aren't? | When the laws related to online gambling were made a few years ago, a specific exception was made for fantasy sports; but I don't think they expected it to become what it is now. _URL_0_ _URL_1_ |
What happens when a currency 'dies'? | Typically the government prints a new currency, and for a limited-time period, they offer you to exchange the dying currency with the new one. In Zimbabwe's case, they abolished their old currency in 2009 and just started using foreign countries' currencies like US dollars and South African rands. People stopped using ... |
How does volume work? If I turn the dial on my stereo, what exactly is happening that causes the sound to be louder or quieter? | [Here's a fairly simple design for an amplifier.] [If you look at this picture you can see more or less how it works] There's a bunch of crap on there that's not really important to understanding how a volume knob works and can safely be ignored. The important part is that the audio signal is coming in at the bottom th... |
Were the Earth to be attacked by external force & we bonded together as a whole regardless of economics and borders, what are we be capable of defensively? | Attacked by an external force? We wouldn't be capable of anything. It 'd probably be over before we even knew we were under attack. They 'd have to be more advanced than us because they made it here. They would most likely be a lot more advanced than us. It 'd be unlikely that another "nearby" civilisation was only sli... |
How does alcohol make you dehydrated? Where does the water stored in your body go just by drinking another substance? | Humans have a hormone that prevents them from urinating. Alcohol lowers this hormone so you urinate a lot more than you should which results in you losing more water than you gained from drinking the alcohol. |
Why can't energy be harnessed through gravity? | We already harness energy from gravity just not in the way your friend thinks. Hydroelectric dams use their height to store potential energy in a reservoir. The height difference between the water and the turbines means that gravity is used to move water past turbines thus creating energy. |
Why does the computer mouse sometimes jump in a random direction? | It shouldn't, when just sitting still. I assume you mean when you are moving it. Older mouses had a ball that made two different little wheels inside rotate, and that would be translated by the computer into mouse motion. But those little wheels would pick up dust and gunk and that could make them get erratic. Most mod... |
Why Mclaren CEO Ron Dennis is being pushed out of his job? | In a takeover battle for McLaren shares, he seems to have backed the "wrong" side , and the remaining shareholders don't trust him any more and are trying to oust him. |
Why does it take so long (longer than a week) to feel pain after a car accident and not a few days? | If there still is pain you better go see a doctor and ask an actual professional about your very specific case! There can be no general answer as injuries - from neglectible to very concerning - of all imaginable and unimaginable kinds can happen. |
How accurate are nutrition labels on foods? | Theoretically, they're pretty accurate. Numbers can be gotten through chemical testing or by combining the known nutritional quantities of the ingredients that go into the food. Typically, the bigger the food manufacturer, the more accurate its nutritional values are, as the manufacturing process and ingredient quality... |
Why are lactose-free products primarily targeted towards women? | I'm assuming it is purely marketing women still do most of the domestic tasks of a hetero-normative, "average", family. This includes the shopping. Perhaps women are more likely to engage with the dialogue around "wellness" too?', "It's because that's who generally does the family shopping. Marketers will target who ac... |
How did diseases that are only transmitted Sexually originate ? | Most infectious human diseases, not just STDs, originally came from animals. Often domestic animals, but sometimes wild animals as well. The flu, TB, etc., come from pigs, chickens, and cattle. HIV came from wild apes or monkeys, and Ebola is thought to have come from bats. Most STD's weren't originally only transmitte... |
How and why are the Samsung Galaxy Note 7 exploding and catching on fire? | A huge flaw in the lithium ion batteries they use. Unlike most batteries, lithium ion batteries contain a flammable electrolyte. Under certain situations this can cause it to release gas, which builds up inside the highly pressurized case. In most cases, it starts to swell first and then, well, explodes: _URL_0_ This i... |
If deep freezing only puts bacteria to sleep rather than killing them, then why does deep freezing sushi/sashimi fish makes them safe to consume raw? | I think you're confusing bacteria with parasites. Freezing kills harmful parasites like tapeworms and roundworms. The bacteria you're concerned about has nothing to do with the fish itself and everything to do with who handles it. If there is any harmful bacteria on your sushi, I'd blame your chef for not washing their... |
Why when recording a song in a studio do they use a screen in front of the mic? | It's called a pop filter, and it is used to break up "plosives" which are your Bs and Ps. When these sounds are produced they release a blast of air, and the microphone picks these up as bass rumbles under the fundamental frequency of the voice. The mesh of the pop filter diffuses the air passing through so everything ... |
How does the resonance in a certain room make just a single string of stringed instruments vibrate and get louder and louder? | Sound is a wave - a series of compressions and rarefactions in the air. Those sound waves bounce off the walls of the room, and propagate back into the room, where they overlap with other sound waves. ) If the peaks and troughs of those waves overlap at exactly the same points in space, they will amplify each other. Th... |
When you burn yourself, for instance by running very hot water over your hand, why does it take a solid second or two to actually feel pain? | This coming from highschool bio knowledge so someone else might be able to give you a better answer. But there are 2 different kinds of nerves. The reason you pull your hand back is the first nerve in action, it's a reflex nerve. This saves time for the brain. Rather than have the signal go all the way to the brain, an... |
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