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Why did facebook grow so big? There were a lot of other social networks long before facebook. How come they did not grow into such a huge company? | MySpace's main problem, IMHO, is that it allowed the user too much freedom, so that MySpace pages often looked terrible . Facebook adopted an elegant, minimalist design for every user's wall . Users found it more attractive. There may have been a lot of luck involved, too. However, it looks like Facebook may be going d... |
Why is glass so loud when it shatters? | Glass is compressed VERY heavily into a flat sheet, then compressed even more. I am not talking physical object compression, that's impossible. I'm talking they fit more of the molten sand/whatever in a space. Once the glass is shattered, all that compressed stuff wants to leave and it does. |
Could someone please explain the issue of campaign finance reform in the United States? | We live in a democracy. People who run our country get their job by getting the most people to vote for them. If every voter was very smart, we would all know who the best person is, and we would vote for her. We are not that smart, so we try to learn before we vote. A lot of times, voters learn about who is the best p... |
Why are the primary colors red, yellow, and blue; while on color pallets for computers use red, blue, and green as the 'primary' set? | There are actually two sets of primary colors. The primary colors of light are red, green, and blue. The primary colors of pigment are cyan, magenta, and yellow, which is sometimes approximated as red, blue, and yellow . You use RGB to reproduce a color using light, such as on a computer screen. You use CMYK to reprodu... |
Why are Ping Pong Balls so flammable? | They are made of a very, very thin layer of a very, very flammable plastic compound called celluloid. The initial flame just catches what is next to it and keeps going until it is scrapped. |
How do Siamese twins work? | As far as I know, there is only one set of conjoined twins this applies to: Abby and Brittany Hensel. Their entire bodies, except for their heads, are conjoined. They each control one half of their conjoined parts, so they have to work in tandem for everything. For example, each controls one leg so it was thought at fi... |
Who owns the copyright to a tattoo? The tattooist or the person that is getting the tattoo? | A tattoo is commissioned art so, Unless the rights are signed over or the artist is "for hire" then the copyright belongs to the artist. |
How does pressure treating work? | They use high pressure to soak the wood with chemicals and pesticides. This prevents bugs and growths from eating away at wet wood. It's required for framing members close to exposed soil. Pro: prevents termites con: more expensive than nontreated.Actually most treated lumber is treated in a copper based treatment , th... |
What is offensive about the Kendall Jenner Pepsi Commercial? | Reducing the complex and nuanced issue of police tensions with protesters to an oversimplified use of the platitude "cant we all just get along, man?". Shitty sugary sodas won't solve widespread issues"Police are systematically targeting, killing, or imprisoning in a forced labor system the black youth of America. We d... |
how does universities work, especially since its not just coursework. | Can you be more specific? From the way it's phrased, I'm not sure if you're asking how research is funded/makes money, or how faculty conduct research as a practical matter. |
Can a star exist outside of a galaxy? | We know of no viable method for a star to be **formed** outside a galaxy. However once the star has been born, it is subject to the laws of gravity. We can certainly conceive of a scenario where a smaller star is orbiting a massive object -- e.g. a neutron star or black hole -- at very high speed. If a third object wer... |
Why are humans so much less hardy than other animals? | Everything you mentioned is actually untrue. Humans are apex predators. We are troop forming and smart and way at the top of the list for endurance. We didn't get to where we are by being weak in comparison to other animals. You as an individual could relatively easily catch and dispatch something like a deer with your... |
If the NFL just gave all the $ they spent on pink Breast Cancer Awareness accessories, wouldn't the charity be better off? | A quick summary of good answers in the thread: 1) The pink items are sold at auction after the game and all proceeds are donated to charity. Interested buyers are paying a lot more than the usual price This means that the NFL spends ~$100 and the charity gets a lot more. Here is the [auction web site]. Thanks, Ferrari1... |
How is it possible for a planet to cast a shadow? | I'm not trying to be patronizing, so please don't be offended by this question: If you believe that light cannot travel through space, how do you explain why we can see the sun? Light can travel through space, because it doesn't need a classical medium to travel through. Actually, the electromagnetic field is the mediu... |
How all the counting numbers can be interesting at once | \'X\' would be "the first OTHERWISE uninteresting number": we're saying that it's interesting because it has nothing else interesting about it. Then Y would be "the second otherwise uninteresting number"; and so on. If something being boring is a reason for it to be interesting, you can't use "boring" as an adjective.W... |
If 2 people are exposed to the same flu strain and both are the same age and healthy, why would one get the flu and the other be immune to it? | One got their flu shot. The other didn’t. Either that or they have been exposed to that particular strain of the flu in the past.People assume that having colds means you have a somewhat weaker immune system then a person who has them less frequently. Usually it's the other way around, it means you have a more pro-acti... |
How different orchestra conductors make music sound differently, if it is written by a third-party and written down? | Oh I love this question! I am a classically trained musician so I'll throw my two cents in. The conductor acts as one part interpreter and one part 'sound guy'. Just like people interpret poems or religious texts, the conductor takes a written piece of music and emphasizes and minimizes various components of it to crea... |
Why do cats jump on you,then jump off again seconds later,then repeat over again? | Ive always thought it was because my cat wanted me to sort of follow her to wherever she wants. Kind of like she wants to play with me and have me chase her, like what kids doMaster Plan: Harvest your organs. They are checking to see if they are working', "Mine does this too, incredibly annoying as all I want is for hi... |
What exactly happens in your mouth when you drink orange juice after brushing your teeth? | Toothpaste block your tongue from tasting sweetness. So when you drink orange juice, which is very sweet normally, you can only taste its sourness. Which is why it tastes horrible.[Here's] a 2.33 video on exactly that subject! |
What is the potential harm of eating raw cookie dough? | It's because the Eggs can be contaminated with salmonella bacteria, we eat it though because it's absolutely delicious.It depends on what ingredients are in the dough. For example, raw eggs carry a risk of salmonella.It's actually not so much the eggs it's the raw flower. The flower is much more likely to have somethin... |
Why can't a really large person be a successful goalie by just sitting still while covering the entire net in the NHL? | Because a net is very large, and hockey players are good shooters? You'd have to be really very super large to cover the entire net, and if you don't cover the entire net, well, what's the point? Players are just gonna shoot where there are openings. Also, if you're not moving, you're exposing yourself to _a lot_ of ve... |
How do some people who aren't related look exactly alike? (Ex:Obama Look-alike's, Movie star doubles, etc.) | Coincidence, psychology and effort. A lot of your appearance is based on your grooming. If you are a tall, skinny white guy with dark hair, grow a beard and put on a top hat, and boom, you are Abraham Lincoln. If you are a full figured white woman, a wig, pancake makeup and a beauty mark gets you Marilyn Monroe. If fac... |
With the construction of the pyramids being such an amazing accomplishment, why was this process not more widely documented and better preserved? | It is not still a mystery, it's been fairly well figured out. _URL_0_ In 2010 writings describing the building were discovered. _URL_1_", 'The then legislation did not believe in the concept of documentation of methodology. They may have assumed that the knowledge of construction would be passed on from generation to g... |
What is actually happening when drinks go "down the wrong pipe"? | There are 2 "pipes." One goes to your stomach and one goes to your lungs. There is a flap of tissue called the epiglottis that covers the pipe to your lungs when you swallow, but while you're not in the act of swallowing, both "pipes" are open to your mouth. Basically, the drink went down your throat before you made th... |
Why, sometimes, when you drink out of a cup is a circle of water created beneath the cup even though you didn't spill? | Condensation on the outside of the cup due to the difference of the air and liquid temperatures. The condensation accumulates at the base of the cup. That's what I've always presumed and will be pleased to hear if it's incorrect. |
Why does the Powerball exist and where does all that money even come from? | the money comes from the tickets being bought. So no one is really putting that money into it, and its not really a "waste" because its not pulling money out of anything else. |
Why does Robert Freitas suggest that if through future age-reversion treatments, we restore our physiology to the condition of a 10-year-old's, our life expectancy will be over 5,000 years? | I think there's a statistical correlation between physiological age and death from things that kill you before you can be treated. You have a tiny chance of dying from a heart attack with a 10 year old's body. But you have a higher chance of dying with a 40 year old's body. Assuming people stop dying from chronic thing... |
Why can you only enroll in health insurance at the beginning of the year? | If you could buy your health insurance whenever you wanted, you would just wait until you got sick. If you can't afford insurance, there are aid and subsidy programs to help pay for it. There are also exemptions to the penalty if healthcare is too expensive. |
Why is there such a gap between public opinion of news media and self-reported ethics of journalists? Why does the public conflate propagandists with journalists? | Part of journalists' job is to tell people things they might not want to hear. There is a well-known psychological response to this. People seek to discredit information that challenges deeply-held beliefs. So they convince themselves that the sources of this information are hacks and liars. It doesn't help that unscru... |
What is antimatter and how does it work? | Antimatter is simply matter with a negative charge. I'm going to assume you know that the electron is negatively charged and the proton is positively charged. Antimatter is basically that, but backwards. The thing which acts like a proton in an antimatter atom is negatively charged, and the thing that acts like an elec... |
What is mucus and how is it made? | Mucus is a slurry of proteins and lipids. Its made when cells release the chemicals to make mucus. |
why do such similar movies seem to come out at the same time? (e.g. Deep Impact/Armageddon, A Bug's Life/Antz, Illusionist/Prestige) | Basicly most studios have similar scripts lying around. The moment they get the information that another studio makes a movie about an astroid threatening humanity they try to make their own version, to beat out the other studio and make bank. That is why studios love exclusive rights to books or comics, they know nobo... |
Why do console game developers aim for either 30fps or 60fps, rather than something in between, like 45fps? | The reason specifically 60 is currently used is because high definition televisions and computer monitors, particularly LCDs, are designed around 60 hertz signals as a common base capability. _URL_0_Rude.. people ask here for FRIENDLY explanations. Since you can google so well, you could be helping more of us that have... |
What psychological factors cause people who see that a car, or other accident that has occurred to stand around and watch, even if it's gruesome (aka rubbernecking)? | It's a combination of it being an irregularity which stands out from people's day to day environment and sometimes just plain morbid curiosity. Imagine if it happened all the time, would people stand and watch then? |
Can Ebola be spread by mosquitos? If not, why? | Ebola cannot be spread by mosquitoes, and it's really thanks to mosquito biology. When a mosquito bites, she does this to get nourishment to lay her eggs. She sits, digests and lays them, then moves on with her life. It's important to note that the blood gets digested in her stomach; Ebola is not known to survive this.... |
Why do people enjoy playing games that simulate warfare? | If you want to go Freudian, people's motives are comprised of the Life and Death instincts. A capability to express these instincts in a safe and controlled manner allows us to feed the instinct in a safe and non-threatening way. Essentially, yes, I'm implying that violent video games are essentially the equivalent of ... |
Is there always a star or a "glowing Orb" in the middle of a planetary system? If yes, why is it so? | Well a quick definition I found for 'planetary system' required that there be a star, so no. That said there can be rogue planets adrift in space or even theoretically many rogue planets forming their own system of orbits around one another. You can also have systems of orbiting planets where there's a black hole at th... |
Why do women stay with the men who beat them? | It's not like anyone walks into a relationship where they get beaten on the first debate. Physical abuse comes out after a gradual descent into shit. There's usually a bunch of emotional/psychological abuse leading up to it that slowly erodes their self-worth until they think they're responsible for or deserving of the... |
Why do cats wiggle before they pounce? | To sink their paws into the surface they're standing on. It helps them get more traction, which means a longer and faster pounce.They are adjusting their weight and leverage in order to make the mighty leap to viciously attack whatever it is they are hunting. Its a behavior that is seen in all felines from house cats t... |
Why is it that pseudo-scientific divination (astrology, tarot, psychics, palm reading) seem to be uncharacteristically more popular with women than men? | The divide isn't actually that big, only a few percentage points. Marketing is what probably makes the difference. EDIT: Some poll by PEW. |
In the U.S., how can a state allocate a higher percentage of its budget towards education, and then rank so poorly in educational funding? | If I have 200 dollars to feed my family for a month and I spend it all on McDonald's, I'm not going to improve the nutrition of my family that month. There's more to results than the money behind it. |
Why do people keep dream journals? | Either because they are just interested in what they dream about, or with the goal of learning how to identify when they are dreaming so they can trigger a lucid dream.Many people keep dream journals because it is difficult to remember dreams, and sometimes it is nice to be able to remember dreams. But you can also rec... |
When people die of "old age" what do they actually die of? | To go into more depth, as you age, and cells divide, they can sometimes become mutated during division, and these mutations than get passed on to future cells, a build up of these mutations can eventually cause vital internal structures to stop functioning correctly, and lead to death from that. |
Why do my earphones work perfectly fine after washing, but other electronics just break? | Headphones contain: copper wires, a magnet and a small plastic wafer . Since these items can not be immediately destroyed by water, they can be dried out and used. Regular electronics have very sensitive wires, boards and other things.Water conducts electricity. The power from a battery is put through a wire that gives... |
why does whiskey get greater with age? And does it get better indefinitely? | Whiskey is usually aged in wood barrelsI.e and it pulls the flavor and color from the barrel. This allows it to be less so the longer its aged the smoother it will be. At some point though it can't absorb anymore of the barrel I would think,but that would be well over the 25 or 26 years you see for the finest bourbons. |
What are "chemtrails" and why are some people thinking it's a government conspiracy? | Chemtrails are what conspiracy theorists believe are trails of chemicals sprayed into the sky by planes .As to why this is done there are a few different theories such as population control through sterilisation or increased risk of disease etc. I'm pretty sure however that the trails are explained by science as being ... |
Do deer and other animals feel psychedelic effects from magic mushrooms, or go on psychedelic trips, as humans would? | There was a famous or at least reasonably well known experiment done looking at the effects of drugs on spiders. Turns out they made different webs depending on what drug they were exposed to. It was pretty fascinating.If they do, we have little way of knowing. > Also, are there plants that other animals could consume ... |
Why is the Japanese national anthem so controversial? | Wrote this in the other post, but it comes down to the average Japanese person's lack of desire to return to the militaristic, god-emperor days of the early 20th century which led the country to war and ruin. The flag, the emperor and the anthem where things to be venerated and worshiped above all. Didn't work out so w... |
what is engineering tolerance? | Tolerance is basically an amount that a specification is allowed to be off by. So, if you want something that's 35cm long, you'll never get *exactly* 35cm. Some precise measuring equipment will always find a difference, it might be 35.0001cm or something like that. So, if you say you want a 1mm tolerance, then the part... |
where does peppermint oil, or any other kind of plant oil, come from? | Oil is, well, oil. Many plants don't have much of it, but it comes directly from the plant. In the case of [peppermint oil], the yield is only around 0.1-1.0%. It is extracted using "steam distillation" - a type of distillation where steam is added to the product being distilled in order to prevent the high temperature... |
before internet ad revenue how did music videos generate enough profit to justify being made | Music video were advertisement for the album, just like singles. TV stations like MTV and VH1 used to play primarily music videos. Back in the day MTV was basically just the radio with picture. The shows on it were pretty much just a host who introduced videos, interviewed artists, and talk about some music news occasi... |
What is the "butterflies" you get in your stomach when you're nervous? | Fight or flight reaction. Blood supply rapidly draining from less essential area's of the body because of adrenaline release. Sending more blood/oxygen to muscles in limbs for possible need in fight or flight situation. |
How do birds know not to fly in the path of a kite and its strings? | I doubt there has been a study on how well birds see kite strings, but there is definitely [plenty of publicized reports] of birds flying into kite strings. I think we can also safely say that some birds do manage to see and avoid kite strings, but I think the more likely answer is that they see the kites and just stee... |
How Amazon and Walmart are able to offer such low prices on items. | Razor thin profit margins propped up by massive amounts of sales, and a willingness to lose out money today, in the interest of destroying your competition later. They also rely on the fact that most people aren't going to buy just 1 thing, and in Walmart's case they strategically lay out their stores to steer your tow... |
If Jesus was Jewish, why does Christianity even exist? | Jesus was the fulfillment of an old prophecy in the Jewish religion. When he showed up, he changed some of the old Jewish tenants and told everyone to follow those rather than the old ways. Some Jews agreed with him and followed him. Others said that he wasn't the fulfilment of the prophecy so things should stay as the... |
What is a PGP fingerprint and why are reporters putting it in their twitter bio? | PGP is a form of "public key" cryptography, which lets people talk to the reporter without anyone listening in. Suppose I'm a government worker who wants to talk to a reporter about something horrible our government is doing. I have two problems: 1) How can I send my info to the reporter without my bosses finding out a... |
Why does canned air (air duster, whatever you like to call them) freeze stuff when you spray it upside-down? | Canned air isn't air: it's a funny liquid that boils at a low temperature. The valve on the top is ported directly into the can. When you turn it upside down, the gas bubble that's usually in the top rises toward the bottom, putting the liquid directly on top of the port. When the valve opens, you release the pressure ... |
When I boil water, why am i supposed to use cold water? | This originated in countries with municipal hot water that was run through metal piping. The hot water is a lot more reactive than cold and pulls all sorts of crap from the metal pipes with it. For example lead piping was still used in some parts of Russia in the 90s. You would definitely not want to drink hot water th... |
Why do basketball pros shoot the way they do (one hand mainly, and the other just for support) What makes this technique superior? | One of my physics teachers once did a talk about the Physics of Basketball a few years ago. Basically, when you shoot the ball you want two main things: 1) Accuracy in terms of location as well as accuracy in terms of the right amount of force. 2) Not to get blocked or put in a tougher shooting situation by your oppone... |
How do private investigators avoid getting arrested for stalking? | They're not "stalking," in a typical sense. Private Investigators do their job which is "investigate." Stalkers may break into homes, cars, and other property to steal items and do creepy things in general. Private Investigators can also work in tandem with the police if a case requires it. In short, Private Investigat... |
Why can we recognise a person talking a certain language but we can't speak it? | Because a language isn't just the words and how they're ordered, it's how phenomes and individual consonant and vowel sounds are governed. It's the speed at which it's delivered. Even if we don't understand the content of what someone says, it's how they say it that we identify. |
Instead of paying Police officers lots of over time , Why not use that to hire more police? | Partly due to the cost of training, equipping and keeping that policeman at a good salary. Maybe they want overtime, and the ones that don't can work the minimum hours. The other fact to consider; if you have 50 policemen and need 100 hours covered, then getting 100 policemen won't be good because next week you may onl... |
Why is Apple making Swift open source a big deal and what does that mean for everybody else? | Its a big deal due the fact that Apple has been notoriously stingy about the creation and distribution of content on their devices/platforms"Swift is a powerful and intuitive programming language for iOS, OS X, and watchOS. Writing Swift code is interactive and fun, the syntax is concise yet expressive, and apps run li... |
How will humanity determine if free will is a myth? | You don't know what is real and isn't. Therefore, you don't know if you can freely interact with anything because you don't know if it exists. This means it's not possible to determine but that's just my take. For more information, look into metaphysics . |
Why is psychosis bad? | Those are not side effects. Those are *possible* side effects. And if the incidence of these is low, then the benefits of taking the medication outweigh the risks of developing one of these effectsCertain psychosis can be very dangerous for the person health, and the issue with psyhosis is the more you have them, the m... |
How do they filmmakers take shots in front of mirrors without having the camera being in the reflection? | And sometimes, the mirror [*isn't even there.*] That's Edward Furlong, an animatronic Terminator, and Linda Hamilton in the foreground. On the other side of the "mirror" is a body double for Edward Furlong, the real Arnold Schwarzenegger, and Linda Hamilton's twin sister, Leslie. A bit of carefully synchronized motion ... |
How do superficial cuts deep enough to expose veins but not draw blood (like a clean cut from obsidian) heal? | Obsidian is EXTREMELY sharp, and you don't need blood flowing from a wound in order for the wound to heal. In fact, it's better that the edges of the cut are so clean, since that makes less work for the fibrin and other mechanisms to close the wound, so the resulting scar will be much less visible. |
How is Sochi so unprepared if they've had years to get ready? | Because Russia is incredibly corrupt. Many of the people who were hired to build things deliberately stole some of the money, put too little resources into construction, and then lied and said that things were going well.Ive wondered the same thing. Even with Russia's views on gays and this new fetish for some old scho... |
How do corporations do those sandwich tax things? | Im assuming he is referring to [Double Irish with a Dutch Sandwich.] Basically what happens, is that an American Corporation, lets say Google, has Billions in profits. If that money were to stay in the US, it would be taxed at 35%. So, what they do is use those US profits to "buy" some proprietary thing from a Google S... |
Why do people sometimes get "pee shy" when there are people around? | You know how some people get stage fright when they have to perform something in public? Well, urinating is a kind of performance, especially when you're in a public bathroom, people are nearby, you're in an exposed, vulnerable state, you dread the sound of the urine hitting the urinal/toilet echoing across the room, y... |
How can a Windows OS take up 4-5GB of space on a DVD but take up to 20GB on the hard drive? | Like /u/totallyfightingfoo says. The content on the DVD is most likely compressed. When data is compressed on a medium it's usually encoded to take up less space by making the notation more complex. For example a set of data containing AAAAAAAAA will become 9A when compressed. |
Why are American troops stationed in peaceful places? | Either the peaceful place might not stay that way, or there are dangerous places close by, so the troops are better prepared to respond, because they're already close to where the trouble is. |
Why Is Alcohol Called a Depressant? | Something that is a depressant doesn't "make you depressed". A depressant, or central depressant, is a drug or endogenous compound that lowers neurotransmission levels, which is to depress or reduce arousal or stimulation, in various areas of the brain. A "relaxant" is a closer cognateWikipedia defines depressant as: >... |
Why is the by product of respiration CO2 contains an oxygen molecule which is the one we inhale? | Oxygen isn't the fuel, it's the *oxidizer*. You need the O^2 in the air you breath in order to burn sugar and fat for cellular energy, and the waste product of burning sugar is carbon dioxide and H2O. The carbon from the fuel has to go somewhere, and we breath it out as CO2. |
How current climate change is any different than the Little Ice Age or Medieval Warming Period? | Biggest difference is the speed of the change. Natural climate change has a general ebb and flow over thousands of years. You don't get multiple degree global temperature increases over a decade naturally, and there's no telling at what point that increase will drop off, or go back down. |
Why do marbles and other similar shape objects show reflections upside down? | Because of the way light reflects. This diagram doesn't show the whole story, because it ends the light at the focal point. Basically, light gets bounced like that when on a curved surface. That flips the image. If the object is convex, it will simply enlarge and distort it. _URL_0_ |
Why do I hear static on the radio when an "S" sound is made? | What you're hearing is called sibilance and can crop up at any stage of the journey from the vocalist's mouth, over the airwaves and to your ear. An example would be a singer doing the common thing of almost eating the microphone as they perform. Sibilance comes from the fast flow of air into the mic, as 'szch' type so... |
How do front page posts disappear from the front page? | Imagine upvotes are helium and time is weight. Eventually, the upvotes stop coming in, but the algorithm pulls down older posts.Flat-out disappear? Moderators deleting the post, most likely. Fall from the front page and down the rankings? The formula reddit uses takes into account the amount of time since the post was ... |
How do you eat Maltesers? | I normally just melt them in my mouth but other people just crunch them right away, i don't think theres a way to eat them though |
Inversion of Control (IoC) in programming | In 1990s Enterprise Java programming, you asked for the resources you needed. e.g. using JNDI to get a reference to a database connection. In essence, you hardcoded the resources. This made automated testing difficult if you wanted to point at a "test" database. But, if something else controls where you get the db refe... |
Why can I still call the emergency services when I don't have phone signal? | AFAIK cell service providers will connect to any phone calling an emergency services number regardless of the phone's service provider. So as long as someone's tower is around, you can call 911. If there are no cell towers at all though, you're screwed. |
The reason/need for an S-Bend in plumbing | It's actually not for the liquid but for gas. Sewer produce alot chemicals that are a gas Many of these gasses smell bad, or are poisonous or can even explode under certain condition. A S-Bend in a pipe is called a trap and it prevent the gas from entering the building.it keeps your drains from farting. All that poop a... |
What is so beneficial about breathing in through the nose and out through the mouth? Why does every breathing exercise mention this? | Inside your nose, you have hair, mucus and its lined with cilia so that the air your breath in is filtered and warmed up prior to entering your lungs. Although your tonsils act as a macroscopic filtering system for your mouth, breathing in through your mouth provides no where near the filtering that breathing in throug... |
What is the difference between Universities and Colleges? | It depends on the country, and even then the definitions vary depending on context. In the UK, a university is a conglomeration of colleges . In America, they're pretty much synonymous, with college being more slang but university being a more formal word. In Australia, college refers to a large student residential hal... |
How would you power a single light bulb with a bicycle? | with dynamo. I remember back when I was a child, my uncle had a bicycle which have dynamo cylinder near rear wheel, it has extended neck which has roller, which is slightly connected to roll to bikes wheel, so whenever he flicksa switch and pedals the bicycle the bulb will light. as for the construction of dynamo _URL_... |
What is the usefulness of 3D printers? | They emailed a wrench to an astronaut last week. He printed it and used it. Good enough?', "Among other things, they're awesome for making prototypes and producing spare parts to fix things around the house with. Also, if you watched an entire documentary consisting of printing a plastic chess piece then it was probabl... |
What are 'soundscapes'? | Gabe from The Office says, "Oh! I like to play soundscapes. I imagine one instant of a song, expanded to be the size of the universe."Think of it as being in a forest, or in a field or on a beach, except without any visuals. All the sounds are there. Like an audio landscape. you can get legitimate soundscapes like weat... |
Why do are hands always feel like the coldest part of our body whenever it's chilly outside? | A good portion of the warmth your body generates is in the core, your torso. As your blood circulates through here, it picks up heat, which it distributes to the rest of your body . However, it has a long way to go to get to your hands and feet. And as it is traveling, it is losing heat to your body, and the environmen... |
If using antibiotics aren't 100% effective, why do they work in treating infections? | A lot of ways to answer. For one, it's not a universal truth that an antibiotic can't kill all bacteria. It depends on a lot of factors, including how well the antibiotic can reach the site of infection. In the lab, antibiotics often are complete, 100% bars to replication. For example, if I plated 1 million lab *E. col... |
How can I trick my brain into ignoring a pain or similar, if it's my brain doing the tricking? | The idea in most of these cases is that your brain is tricking your body. When you put ice on your hand, it can override the signal from the pain receptors in your mouth, sort of like they're having a shouting match and your hand is the one your brain hears. Likewise, when you think about sex when you have to pee, your... |
Why are elected officials allowed to insist explicitly that Christian (or other nonsecular) values are the basis for political actions when a separation of church and state is a well-established legal precedent? | Because there is no legal prohibition on combining church and politics. And the voters get to use any qualities they like when deciding whom to vote for -- even religionAccording to the 1st amendment "prohibits the making of any law respecting an establishment of religion, impeding the free exercise of religion". It ca... |
How does border control validate passports? | I've read that passeport scanner automatically check the interpol database . Each country might check it's own police database but they are not that much shared For the rest I don't know what they check exactly, Something like making sure that you look-like the same as on the photo that you haven't travelled to weird c... |
Why/How did AC power beat DC power? | AC power carries better over distance was a big deal. It was difficult to deliver DC power to another town for example, despite being easier and better for home use.Alternating current was created by Tesla. Direct current was Edison's idea but power outages were common. Many of Tesla's ideas were dismissed or stolen. A... |
Why reddit gives me the "took too long to load" page even though it's only been one second. | Because one second to generate a page as simple as Reddit's is equal to spending a month to write a 2000 words high school essay. |
what are the differences in morality between the major religions? | There is more moral variation within a religion than between different ones. Just about every religion says murder is bad but killing is justified under some circumstances. Which is which becomes a matter of subjective interpretation**Christianity**: "Thou shall not kill", except for disrespectful children, gays, witch... |
Why do radio stations begin with the letter "K"? | " Beginning in 1912, every country approved of and received designated letters to begin radio station call letters with.In the United States, the letters "W" and "K" were to be used. At first, it didn't matter what part of the country a station was located in to use either letter. Then, in 1923, The Federal Communicati... |
I'm a pretty sounds sleeper. But 90% of the time I do wake up in the middle of the night, it's within 3 minutes of 3:30am. Why? | I have the same thing happen to me, If you have a very consistent sleeping pattern, meaning you always go to bed at X oclock and always wake up at Y oclock, your sleeping cycles will always be at the same times, I'm guessing you either go to bed at or around 12:30 am or 9:30 pm. Am I right? |
If I had one speaker with say 50 decibels coming out, then turned on another of the same. How loud is it? | Adding a second speaker should double the out power, which increases the sound pressure by 1.4 times, which should sound 23% louder, which is a increase of 3dB. That assumes there is no destructive interference between the two speakers which could make things sound even quieter53.01 dB is the answer. Here is a quick ch... |
Why do we press harder on buttons of devices that have low or dead batteries in them? | This is a habit we've developed from our interaction with mechanical buttons. It's similar to when people are using slide advancers and they point them at the projector screen even though the receiver is plugged into their laptop. They are used to pointing the TV remote at the TV screen. |
How does a cell ''decide'' to become cancerous. | Cells have lots of failsafe mechanisms to check for DNA damage and either A). fix it, or B). Kill the cell . As well as that, cells have a natural division limit due to a quirk of DNA replication, which acts as another failsafe. In cancerous cells, the genes for one or more of these mechanisms becomes mutated and deact... |
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