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javascript:void(0) | It's generally considered improper to use javascript:void on links , but basically what it does is tell the browser to do nothing . This is sometimes followed by an onclick attribute which allows the web programmer to specify an action to be called when the link/button receives a click event, but there is no reason why... |
What has changed about Obamacare since a year ago? | Common questions typically get the "search first," etc thing from a moderator and a slew of users who want to be helpful. I'm going to head that off and say this post is approved, it specifically mentions previously posted threads *and asks for the changes*. Thank you, OP, and good luck. Also a brief guideline for any ... |
what is the point system for? (The up/down voting?) What does the karma do? | Upvotes and downvotes are a way crowd-sourcing the sorting of comments. Instead of a central group of moderators picking out the best comments to \'feature\' and scouring the boards for bad comments to \'hide\', which would be an insane amount of work, reddit leaves the job up to its users. Everyone does a little bit, ... |
Learning how to read (questions inside) | There are basically 3 stages in learning to read a phonetic language like English. The first is learning the phonetic sound of each letter. A makes an "A" sound, B makes a "B" sound, etc. This will usually be combined with identifying the first letter in a word - "What letter does \'elephant\' start with?" An extension... |
Why doesn't the poliovirus evolve as rapidly as the flu virus does? | Part of the reason that flu can be really dangerous is that it infects so many species. Swine, birds, humans etc. Not every strain can infect every animal. But some animals can be infected with many types of strains, and when infected with more than one type at a time they act as a mixing basin, allowing new combinatio... |
What's the youngest acceptable age to start drinking alcohol? | There are minimum age laws because there is really no way to measure something subjective like maturity. So government uses a metric that is objective, like the age of legal adulthood or some other number, because it is measurable and enforceable with the lowest cost. In my anecdotal experience, I haven't met many teen... |
how are telephone numbers assigned? | Area Code = first three numbers = part of city or state where you live. Next three digits = smaller, local area identifier. Last four digits = your phone. |
Why is there a revival of feminism nowadays? | You're probably either just noticing it, or being exposed to it more. Feminism has been alive and well for decades. It's getting a lot more outspoken as it attempts to criticize other movements and subcultures that have been free from such criticism in the past, though. Maybe that's why - it's just intruding more into ... |
Why isn't the USA fighting the Mexican cartels with the military the same way they are fighting in the Middle East? | I don't think martial law could spread across the country. I think there are multiple reasons why the US isn't involved. Not much profit in it. Mexico may not want our help and we actually respect their government. More profit in our "war on drugs" than there is going after cartels. It's also very possible that we are ... |
Why Aren't We Pressuring Turkey? | Well, if we have a stern word with Turkey about allowing oil to be sold illegally and financing a terrorist organisation, who's going to have a stern word with, say, America about allowing drugs to be sold illegally and financing criminal and guerrilla organisations? What would Turkey actually do? I mean, it's easy eno... |
why does Alzheimer's end up killing people? | Alzheimer's isn't just a disease that makes you forget stuff. It literally physically destroys your brain. Take a look at [a normal brain compared to a brain of someone with late-stage Alzheimer's]. As Alzheimer's progresses, you first stop being able to remember stuff. Then you start getting confused in general, and b... |
If a virus wiped out everyone on earth, what would happen to all of the nuclear reactors? Would they explode/meltdown or would they automatically shut off? | Depends. A virus would be slow enough to allow for personnel to stabilize and shut down the reactor. If everyone straight up vanished, then the reactor would continue to run for a while, until an alert goes off, at which point it'll shut down automatically. After that, the emergency generators will engage , which will ... |
why can't we just purify saltwater from the ocean into drinking water? | We can. It's just way more expensive than building a freshwater reservoir. Salt water has to be boiled into steam and then the steam is cooled into purified drinking water. That requires a ton of energy.Getting purified water from the ocean only solves half the problem. You have to get it to the people who need it. The... |
Why does the face turn grey, green, or lose color right before throwing up? | This has been asked before here is the answer. > The blood is rushing away from your face and towards the vital organs, like in most stress responses we have. The green color, I believe, is a combination of Caucasians\' yellowish skin tone, combined with the blue appearance of the veins under our skin. Our veins are no... |
Humans need multiple types of sources of food for their nutrition, vegetables, meat and so on.How do carnivores get all their nutrition just from meat? | Pure carnivores, like cats, typically eat the stomachs of their prey, contents and all. Also, humans don't need to eat vegetables if they are willing to eat organ meat as well as muscles. For example, the liver of animals is typically rich in vitamin C . Raw calf liver has about the same vitamin C content as grapefruit... |
Why do I get a sympathy pain in my balls when I see someone else hurt in that area? | We have a set of neurons called Mirror Neurons, which enable you to feel that phantom sympathy pain. There are a few hypotheses as to *why* we have them, and it seems to most researchers that they are an aid in communication and bonding. Being able to share emotions and pains with other people can bring us very close. |
How do they lay foundations for sub-water projects such as bridges, LNG piplines, oil rigs and fiber optic cables | Bridges: temporary structures to block out the surrounding water, either [cofferdams] for shallow areas, or [cassions] for deeper footings. Pipelines: tunneling using a [tunnel boring machine] or other forms of [trenchless construction]. Oil Rigs: can use cassions like bridges do, they can be buoyant, or they can ancho... |
Why do we feel the urge to throw up when we see something gross? | This was a good question.. do we think that gross thing has airborne poision we need to puke out? Hmm |
Just finished watching Silicon Valley. Are the key concepts of the Pied Piper compression algorithm a real thing? | Sounds totally fake. The [site] is clearly a joke. Anyway since you asked about compression I can tell you how it works. The idea is to somehow get rid of redundant data. There are two ways you can do this. One is lossy compression and the other is lossless. With lossy compression you actually delete the things that yo... |
How does an animal/insect get trapped in amber or another preservative? Surely it doesn't just walk into it right? | In some cases the insects may be attracted to something in the sap and they just get stuck in it when they're trying to feed. In other cases they just land on it accidentally and never get out. I suspect that the small lizard preserved in amber was probably attracted to insects stuck in the amber and got stuck itself, ... |
Why do we engage in small talk? | It's a socially appropriate "test". If you can engage in small talk you pass the first step of being a stable person. If someone engages you in small talk and you babble about chemtrails or tinfoil hats, then you fail the test. Small talk with people you know is simply practice for the real thing. TL;DR Small talk is a... |
How efficient can solar panels get? | In theory, the only limit is the actual amount of sunlight that hits the panel. However, the real efficiency is equal to the total sunlight minus what gets absorbed before it reaches the actual photovoltaic materials, times the percentage of light that actually gets absorbed where you want it to, minus the electrical r... |
Why do poachers kill rhinos for horns rather than just harmlessly dehorning them? Does the market really care how they get their horns? | It's likely to be easier to kill the rhinos rather than to subdue then and remove their horns. |
How can the Canadian and American version of the same stock be different prices? | Simple: they're different exchanges. Different people are doing the trading on the Toronto exchange than the New York exchange, so the results are different . Some traders try to use this to their advantage, buying the stock on the exchange where it's cheaper and then instantly turning around and selling it on the more... |
Why do some things feel as if they "just happened yesterday"? | Maybe because, even it it happened 14 years ago, you kept the memory alive by thinking about it repeatedly over the years and relived it. Its then not an old memory. You're sort of pressing the refresh button on that memory. |
not sleeping every night can be bad for your brain | Your brain is far from inactive when you sleep, it uses the resting period to restock on nutrients and general maintenance. I'm not sure what, exactly, the side effects of long-term sleep deprivation are but I'm sure they are not positive. |
if oil is hydrophobic, then why are you supposed to apply body oil when your skin is damp? Wouldn't absorption rates increase if your skin was dry? | It's more to prevent moisture from leaving your body while it is warm and your pores are open. You don't really absorb the body lotion, it sits on top of the skin and helps prevent dryness. Also, they are formulated to help blend in with the skin , even if you aren't hot. |
Why was(are) there height restrictions on buildings? | Generally two reasons: Practical: If there is an airport nearby, you don't want the buildings tall enough such that an aircraft could hit it. Aesthetic: If there are historical landmark buildings, you don't want newer buildings blocking the view of them.There are also infrastructure reasons, like the capacity of the wa... |
Understand benefits/pitfalls of Roth vs Traditional IRA | It all comes down to when you want to pay your tax liability. A Roth allows you to pay it now to avoid taxes in the future. Most people expect to be earning more and thus have a higher tax liability in the future, so a Roth helps by giving you a source of income without your taxes increasing. Another benefit of a Roth ... |
- What REALLY causes computers to slow down? Can it be stopped / reversed? | I think your most likely cause is software. OVer the years/months/whatever you will have installed a lot of software on your computer. A lot of this software will have components that run in the background, this may be task bar icons or services that are idling on your computer waiting for a trigger . Installed softwar... |
Who is Ellie, and why is the reddit logo for today dedicated to her? | Ellie is a lucky teenager who met the reddit admins as a birthday present, the logo is of her own design source: _URL_0_I was so confused because I thought it might be a neat Reddit easter egg because today is my birthday as well, but I was disappointed at first because I thought reddit got my name wrong.Well, it must ... |
If a person was floating in the air why wouldn't they travel due to the rotation of the Earth? | In a nutshell, because you are moving just as fast as the earth is spinning regardless if you are on the ground or in the air. In order to travel you would need to exert force to propel or decelerate yourself in relation to the momentum of the earth. |
Ayn Rand's moral philosophy and what exactly it means to "go galt" | Rand held that each man should act in his own rational self interest, and that the purpose of life is to lead a rich and fulfilling one, however you personally define that. The height of morality is productivity and rationality. The most immoral ones are violating the rights of others and irrationality. She held sacrif... |
Why do singers wear headphones when they perform? | They are called in-ear monitors, they are basically earphones that have been molded to the singer's ears to isolate as much noise as possible. A stage gets very loud from the fans and the music from the speakers usually isn't facing the singer, so they use IEMs to help keep them in sync with the music. Also, it's not j... |
I see squirrels all the time, all over the place. How come I never see squirrel poop or even the act of squirrels pooping? | Meanwhile on _URL_0_ Squirrel 1: I see humans all the time, all over the place. How come I never see human poop or even the act of a human pooping?Squirrel 2: Humans are scared to poop outside. They poop into small tunnels in their habitats.Squirrels are latrine animals, meaning they select an area to typically do thei... |
If we are at risk of a blood clot from sitting still from 5+ hours why are we not at risk every night when we sleep? | You move when you sleep. Fidget, switch sides, steal your SO's blankets. Coma patients have to be moved around to prevent clots and bedsores as they are unable to move themselves.That is actually a good question that I have not heard before. I believe that it is when we sleep comfortably we do NOT pinch off our basic b... |
Why is good day, morning, afternoon and evening greetings but good night a farewell? | In theory you aren't going to bed with the person you're saying "Good Night" to, and even if you are you won't really be aware of them while you're both asleep. |
There's the speed of sound & the speed of light, but what about the speed of heat? | Heat gets transferred in several different ways, which work at different speeds. The one you experienced from the pyrotechnics is *radiant heat.* For physics reasons, hot objects glow, and there's a formula I won't bother with that describes what wavelengths an object will glow in at what temperature. It's called the [... |
Why is it easier to dry off after a bath than a shower? | When you step out of bath the water will stick together and fall off you, but when you're taking a shower, the water drops will stay on your body. |
Why doesn't a vacuum have the temperature of "Absolute Zero"? | A vacuum doesn't have a temperature. Temperature is the kinetic energy of particles. You don't get cold by touching a vacuum because there is nowhere for your heat to go. when you touch a cold object, like ice, you get cold because your molecules knock into the object's molecules, transfering energy, heat, to them. In ... |
When people say they can smell when it's about to rain, what are they smelling if water is typically odourless? | "Petrichor is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek πέτρα pétra, meaning "stone", and ἰχώρ īchṓr, the fluid that flows in the veins of the gods in Greek mythology." "a metabolic by-product of certain actinobacteria" So, it's the smell of the reaction of bacteria. [Wik... |
How does the water table work? I just did deep enough and then there's water? Why aren't deep caves flooded then? | > I just did deep enough and then there's water? basically. if you had a cup of water, and added sand until the top was dry, you would have a water table. you can do this near the beach. dig down a bit and the sand is wet. the earth is a bit more complicated, though. for instance, certain materials can form a barrier t... |
How do American Football broadcasts have the imaginary first-down line be over the field, but not over the players? | They use the field like a big green screen. Anything that isn't the same color as the field doesn't get drawn on. |
How do services that are free, but do not have ads monetize me? | Discord is still very new and have decent funding, right now they are using that to improve the service and get people using it. Their plan to monetize later afaik is to sell themes / emotes etc. In general I guess it depends on the company but you gave discord as an example so replied purely on thatSays right on the f... |
How do Universities work and why are they rather slow at receiving and documenting documents? | Universities are the size of cities. I worked for Student Affairs at a UC school -- incidentally my boss was the former Associate Admissions Director, though he didn't talk much about it -- and department meetings or lunches could pack a basketball gym. As others have mentioned there are likely tens of thousands of app... |
What does full development/maturity of the human brain really mean? | Generally it means that the person becomes less impulsive and weighs risksDevelopment in the brain occurs by laying down connections between neurons. The frontal lobe is responsible for higher thinking such as planning, consequence consideration, and other abstract intellectual functions. To do these well, this area mu... |
Why do sunburns continue to feel hot after taking a cold shower or completely cooling off? | The UV light damages the skin cells, in order to replace the damaged skin blood flow to the affected area is increased which causes the skin to be warm to the touch.I'm pretty sure that's it but feel free to correct me. |
How exactly does a person faint from a sleeper hold? | If you do a sleeper hold properly, a person can be knocked out in a couple of seconds. You are literally cutting off the flow of blood to the brain for just a few seconds, causing them to pass out. Source- Jiu Jistsu class', "Holding your breath keeps you from getting new oxygen from the air, but each breath only excha... |
How sexually active are humans when compared to other animals? | Humans have sex even out of the fertile days of the cycle because of pleasure. This evolved to avoid men getting crazy over women during heat. Imagine 6 days where no one would do anything but copulate, that would lead to food shortage in primitive tribes and more susceptibility to perish. So without heat there's a lon... |
Is there enough money in existence to pay back all outstanding loans with interest? | This is actually a sort of complicated question, that I used to wonder about as well. The part you are missing is the means by which central banks create money. You are correct that when a loan is made, the total value that needs to be paid back is greater than the amount lent so where does this extra money come from? ... |
What is Marginal Benefit? | Would you like a candy bar? Here, have one. Did you like it? Of course you did. The benefit to you was considerable. Would you like another candy bar? Here. Did you like it? Of course! Did you like it as much as the last one? Maybe not. Repeat seven times. Would you like another candy bar? By this point, you might say ... |
How do we know how continents have drifted in the last 3 billion years? | Lots of ways. Perhaps the most obvious modern one is that we can bolted GPS locators to different bits of crust, pair that up with laser ranging, and over the years we can track their movement relative to each other. YOu end up with vector maps like this: _URL_1_ Most continental movement is driven by opening and closi... |
Is a fruit or vegetable 'Ripe' when humans deem it fit for consumption, or is it a biological state for the plant? | We eat most fruits when they're biologically ripe. We eat most vegetables early. Broccoli and cauliflower we eat the unopened buds of their flowers; cabbages, lettuces and mustards we eat the leaves before the plant buds. We eat peas young, but most beans we let mature.In short, both.Fruits love to be eaten because in ... |
How are military aircraft named? | USAF egress maintainer in training here - every aircraft has a letter designating it's primary mission. Here's the setup: A - Attack B - Bomber C - Cargo/Transport E - Special Electronic F - Fighter G - Glider H - Helicopter K - Air Refueling O - Observation P - Patrol R - Reconnaissance T - Trainer U - Utility V - VTO... |
How come September is the only month that's abbreviated to 4 letters and not 3? | I am pretty sure it is just what Cambridge recommends. It seems that in the United Kingdom, Sep and Sept are both used. In the US, the vast majority just use Sept. |
Does the concentration of a medicine one takes matter? | > If I am taking tylenol for example. Will the effect of the pill vary depending on whether I take the pill as is, dissolve in 10 ml water and drink it or dissolve it a gallon of water and then drink it? In that case not really because ultimately it gets dissolved into the volume of your body. Some medications are not ... |
Why are there so few / only low quality pictures of Uranus and Neptune? | Voyager 2 was the only spacecraft to ever visit them, and for both planets it was just a fleeting glance as the probe sped along. Both planets have tremendous scientific potential because of their weird characteristics that sets then apart, despite the fact that they look kind of boring in visible light. There is inter... |
Why gas stations aren't subject to prices needing to match what is advertised? | > Many times you'll see a lower advertised price on their huge signs only to get to the pump to see a higher price. I've never heard of anybody complaining for a price match for false advertising. I have never seen this happen. Maybe it's regional. I found a few articles online that say that the advertised price is bas... |
Why is it that sometimes I'll eat until 'full' but shortly after I stop eating I feel sick like I've eaten too much? | There is a delay in the signal getting sent once you are full. My grandfather always used to say walk away while you're still hungry. |
The difference between a double entendre and a pun? | A pun is using the same word in two different ways based on the sound. EX: Did you hear about the Pirate Movie? It was rated ARRRRR. A double entendre is a statement that has two meanings. EX: I went to bed with her. You are literally saying you slept in the same bed together, but the double entendre indicates that you... |
Why are you so much stronger while exhaling? | It's not that you're stronger when exhaling. Your core muscles tighten when you lift something heavy. Your abs tighten, your pecs tighten, and your back muscles tighten, all in an effort to keep your torso upright and strain against the weight whatever is in your hands. If they didn't tighten your body, regardless of h... |
What motivated proto Native Americans to cross the landbridge to America from Asia? | Finding food. Early humans were hunter-gatherers, they didn't figure out yet how to grow their own food. When the population became large enough there wasn't enough food to go around, so they started migrating to find new places to live in. Edit: By the way, you have it the other way around. Humans originated in Africa... |
Why is overproduction of oil a bad thing? | I believe you're thinking too much from a consumer point of view and not from a producer point of view. Excess inventory that you can't get rid of is a bad thing. It's costly to store and while you have excess inventory, you aren't drilling or refining. It's good for consumers in the short term because of low prices, b... |
How we can hear the voice in our head when we are thinking? | Hearing happens in the brain, and our brains are capable of recalling and synthesizing this experience regardless of external stimulus. |
Why did King James get decide what manuscripts got included the Bible? Why does modern Christianity trust his compilation? | He didn't choose the manuscripts. He commissioned a new *translation* of the Bible from the existing manuscripts that would be appropriate for both the contemporary audiences, and the values of the Anglican church. As for the why? The English monarch is the head of the Anglican church.The books that were included in th... |
Why do most (popular) rappers release albums as mixtapes and not as a purchasable album? | Im giving an explanation from what I learned with Travis Scott's mixtape Days Before Rodeo. Its mostly used as a self-promotion of a rapper, using either remixed songs/beats or his own music to attract masses and show his skills/talent. Should contain bangers or attracting hooks, featurings with popular artist are grea... |
Duverger's Law?? | Vote which cola will be chosen as the most popular in the USA in a poll taken of 5,000,000 individuals. Your vote counts in the poll's final tally. If your vote is the same as the poll's outcome you win $1,000. You will vote for Coke or Pepsi even if your personal favorite is Dr. Pepper. You may not agree that Coke or ... |
Who decided the order of the alphabet? | In the year 1011, a writer named Byrhtferð ordered the Old English alphabet for numerological purposes. He listed the 24 letters of the Latin alphabet first, then 5 additional English letters, starting with the Tironian note ond an insular symbol for and: A B C D E F G H I K L M N O P Q R S T V X Y Z & ⁊ Ƿ Þ Ð Æ The le... |
Why does a gatling gun have that rotating barrel? What purpose does it have? Why not just 1 stationary barrel? | The high rate of fire would melt and warp a single barrel.Gatling used a multi-barrel design when he invented his gun in the 1860s because no one had figured out how to use the exhaust gas from each cartridge firing to power the mechanism to load a new cartridge into the chamber. Rotating the handle was how you got the... |
Why do I always see people posting Tom Cruise repeatedly in comments on Reddit? | There was once a thread on /r/AskReddit about which celebrity people thought needed to come out of the closet, and the response was Tom Cruise in every comment and reply. It was a very famous thread and the new comments pay homage to the original. |
Why is/was channel 3 the channel to tune into for cable and satellite television? | And video games, VCR, etc. Most used to have a setting for using either channel 3 or 4. That was because channel 3 was very uncommon for broadcast use in the U.S., and no broadcast market ever used both channel 3 and 4. So one of those channels would work virtually everywhere. |
How does one go about creating and then successfully marketing an app for let's say, an iPhone? | Almost all Iphone apps are made in Xcode. It's basically free with a mac and is their version of Visual Studio The stages are basically. 1.) Idea2.) Design3.) Programming4.) Certification5.) On the Iphone store. 1.) Come up with the idea. 2.) Design the interface and what it's going to look like. 3.) Program the applic... |
How do most Americans seemingly always know what compass direction they are facing? | Well the cities are generally grid based and even some streets have cardinal points in their namesIt's a combination of television drama plus selection bias . In addition, Americans often have to deal with significant distances where cardinal directions make sense. For many non-urban places it isn't uncommon to drive d... |
Why did bicycles in the past have one really huge wheel and one (comparatively) smaller wheel? | Because they hadn't worked out how to implement [gearing] yet. Or in other words, the only options they had were pedals connected straight to the wheels, in a 1:1 gearing ratio, meaning one turn of the pedals equalled one turn of the wheel. When you've got normal bike size wheels, that quite severely limits how fast it... |
They say the universe is expanding, but stuff is getting further away. Does that mean the universe is just stretching itself out rather than actually expanding? | Space is stretching. Objects aren't. If you have something like a person, or a planet, or a galaxy, or even a galaxy cluster, the forces that hold these together are stronger than the expansion of the universe, and they don't 'stretch.' That's why we're going to crash into andromeda in a very long time from now. But if... |
Why was HIV/AIDS blamed on the homosexual community in the early stages of its discovery? | It was first brought to the US by a gay man and it ravaged the gay community first. There was not much research effort or funding directed at it initially simply because is was a "gay disease." The truth is that the overwhelming majority of world AIDS cases exist in Sub-Saharan Africa and most of those cases are in het... |
How do we know how far away things are in space? | Hubble's Principle states that the farther away a galaxy is from us, the faster it moves away from us. This also ties into the cosmological principle . When we view stars from far away, they experience [redshift] due to the doppler effect. The further the star is moving away from us, the faster it is moving away and th... |
Why do DVR TV ratings matter so much if people recording shows are likely to just skip the commercials? Shouldn't the more prominent ratings be focused on the people actually watching the ads? | They track both -- live viewing, same day viewing, next day, three day and so on. And yes, higher live ratings are best, but DVR ratings are important too, and some ads can still work with DVRs. Have you noticed that movie ads have the name of th film bannered across the top during the whole ad? That's so the name of t... |
Why are there different answers as to how many countries there are in the world? | First, let me explain three different things: * State: A region that is unified by an officially recognized governing body. * Country: A region with its unique political structure and culture, but it may not necessarily have an officially recognized government on the international level. Historically, they might have b... |
Why doesnt the US and the world prioritize Pakistan from continuing to develop nuclear weapons and sponsoring terrorism over Iran? | If a country already has a nuclear weapons arsenal your options are much, much more limited. Pakistan is somewhat unstable already, what if severe sanctions further destabilized them? We don't want that, we want nuclear armed states to be as stable as possible, especially ones with really nasty factions within them. Al... |
how applications that crash in Windows prevent you from accessing the task manager. | If by task manager combination you mean control shift escape, is it Windows Explorer that's crashing? If Control Alt Delete isn't working then there's something larger that's screwed up. Extremely hard to answer this question without a ton of details from you and stuff that goes well beyond ELI5 |
How do antivirus programs scan hundreds of files a second for hundreds of thousands of different viruses? | The file hash only has to be computed once per file in order to be compared to the database of known hashes, and modern hash algorithms are ridiculously fast. |
Why cant smart phones have both high resolution on both back and front camera? | It's mostly a factor of cost. Higher resolution cameras obviously cost a lot more to produce. A few years ago, most cell phones didn't even have a front-facing camera, the reason people had cameras on their phones was to take pictures of other people/things, not usually themselves. Then selfies and video-calling starte... |
What stops animals from enjoying music the way humans do? | I can't answer this question, however I can share an experience involving animals and music. I grew up on a dairy farm, and the guy that milked the cows listened to Mexican music. He never took time off, but one day he did and I was milking then and listening to classic rock, softly. Not very loud at all. But they woul... |
if I built a tube from space straight to the surface of the earth and then removed all the trapped air inside of it, what would happen to someone who stepped into the tube? | It probably wouldn't make a perceptible difference. Just think of the difference in effort to walk 5 feet horizontally basically only fighting atmospheric resistance and jumping 5 feet where now your taking gravity into account and you can start to visualize how much of the force required to reach outer space is to ove... |
Do humans really need sleep to live? | No one is actually completely sure. What we DO know is that sleep deprivation leads to decreased neurological performance. We also know that sleep is [probably] very closely related to memories and learning. We also know that yes, you might literally [die] from sleep deprivation . Most animals sleep, too. Even fish. So... |
The difference between salicylic acid & benzoyl peroxide in acne medication | Serve the same functions. Benzoyl peroxide tends to be stronger but may also cause irritation.Acne is a bacterial infection. I'm under the impression that salicylic acid combats bacteria by encouraging your body to shed your epidermis where you apply it. It also helps close up pores so that bacteria can't grow. Benzoyl... |
why does certain hair grow in more than others? My beard hair grows thick fast, but my leg hair and arm hair basically stays the same length. | The outside surface of your lumpy looking terrestrial vehicle is covered in miniscule holes that resemble little tiny doody chutes called follicles. As these little bastards form cells deep in those magical shafts and they push the older more worthless cells out beyond your heavily perforated, pasty looking epidermis. ... |
Why you have to write a curvise paragraph during the SAT | It's effectively an affidavit. Not in the literal legal sense, but that's the function it serves. It's your statement that you are who you say you are, and that you understand that you will get in *incredible* trouble if you take the test under false pretenses. |
How come when I cook things like pizza rolls in the microwave, some come out cold and some hot? | does your microwave have a rotating tray? If you didnt use it, you will get cold spots. . If you did use the rotating tray, then your microwave has cold spots larger than it should. Try cleaning it out first to see if stuff on the sides is affecting the reflections of the microwaves. If not, then you microwave may just... |
Why does the mustache grow before the "beard" in puberty? | That's not always the case. Facial hair will begin to develop in different areas for different people. For example, I began with side burns, they I couldn't grow a beard until I was 19, and I couldn't grow a moustache until I was 24. For quite some time [this] is what I looked like. |
How does a gas pump know when to click off? | There are two tubes in the pump "spout" : a main gasoline dispensing tube, and a secondary tube that we'll call the "vacuum tube". When gas is flowing, the "Venturi effect" is exploited to produce a suction through the vacuum tube, which causes a continuous flow of air as long as the nozzle is not submerged in gasoline... |
Why does the desert have so much pure sand? How was it made? What is underneath it? | Nearly all sand in deserts came from somewhere else – sometimes hundreds of kilometers away. This sand was washed in by rivers or streams in distant, less arid times – often before the area became a desert. Once a region becomes arid, there’s no vegetation or water to hold the soil down. Then the wind takes over and bl... |
Can someone explain sister cities to me LI5? | When two cities are about the same size, have the same factories, or have mountains and rivers like each other. They form a partnership and agree to be friends. They usually exchange gifts like statues or art. Then, people from each city visit each other and see how they do things in their city. |
How is it that redditors can effectively shut down websites (hug o'death) but we don't crash reddit? | Reddit is hosted on AWS, which is many massive server farms. One of the advantages of providers like AWS is that when high traffic hits, you can have your system automatically spin up additional servers to handle the load, and then to shut them back down once the demand goes downBasically Reddit expects the traffic it ... |
Our bodies can create an embryo that assembles into a young body full of new cells and repeat the process. Why can't our bodies skip the embryo step and just renew itself? | Your body renews itself every day. In fact you are a completely new set of cells every 7 years. The issue that we have are small errors as cells divide and renew over time eventually lead to the numerous problems of agingEffectively being immortal would put a damper on the whole "evolution" thing. The process that crea... |
How does Wi-fi /radio signals relate to the sensory information we use them for. | > why aren't I receiving signals from other broadcast. You are. Imagine a message being sent by your router to you and your computer is FalconlickPC. It can give you a specific address, well use the number 1 for your pc. Now also add in 2 3 4 5 6 for all the other wifi devices connected to your wifi. Lets send the mess... |
Why do I sometimes get goosebumps all over in waves for a few seconds when something mildly emotional happens? | There are small muscles called arrector pili at the base of hair follicles. They contract and pull the hair erect in response to stimulus from the sympathetic nervous system, which reacts to stress. This signal is balanced/complemented by the parasympathetic, so the response is temporary. |
Objectivism in the Fountainhead and Atlas Shrugged? | The most common idea that people bring up about objectivism is the morality that one owes to oneself. Rand paints a picture that the most important thing in the world is your own happiness, regardless of what others think or believe. If someone needs your help but it makes you unhappy to help them then it is immoral to... |
How does next generation DNA sequencing work? | You start with the DNA to be sequenced in the wells of the picotiter plate immobilized on a bead. There's a primer to start the sequencing. You then flow on buffer that contains everything you need to add the next base. You repeatedly do this in sequence with buffers that have only A or only C or only T or only G. The ... |
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