Split (3)

train · 273k rows

title stringlengths 0 299	text list
Why does the "church of scienctology" still have tax exempt status in the usa?	[ "There is no hard set definition of what a religion or \"church\" is in US law and each group that desires to gain tax exempt status under the religious clauses applies and then is either granted or denied that status. Once granted there is really no strong mechanism to remove the status as attempting to do so woul...
How "cold" can Fire get before it goes out?	[ "The coldest fire observed has been around 250 F or 120 C. \n\n_URL_0_" ]
If no normal person can withstand water boarding can't it be used to get anyone to admit to doing anything just to make it stop?	[ "confessions made under torture (any torture, not just waterboarding) have been deemed unreliable because there are way too many false positives. people say whatever it takes to make the pain stop\n\n[CIA torturers themselves](_URL_0_) admitted this, but continued(s) to use it anyway, because torture is fun i guess...
Why do the dirtier "Grimm version" of fairy tales serve as better teaching tools than the Disney or "Clean" versions of fairy tales?	[ "An example would be useful. But if you mean what I think I mean then: Reality sucks. Things don't work out perfectly 99% of the time. \"Happily ever after\" is an extremely rare occurrence. So it's better to tell stories that are a little more grounded.", "Who are you teaching to specifically? The original versi...
Tumblr. What is it? How does it work? Why is it so popular?	[ "Tumblr is a blogging platform. It's typically best for short-form post. Think of it as an in between Twitter and a traditional blog. \n\nTumblr essentially allows you to post text, photos, videos, etc. It also makes it very easy to share content between blogs. For instance if you like a particular photo you can \"...
The Geneva convention, who it applies to and when it may not apply to someone.	[ "It applies to those countries that signed the treaty. IS didn't exist back then so they didn't sign it. It's a treaty, not a law. That means the signed countries put up their hands and agreed they would do the commonly agreed on part of treating civilians and POWs. A rogue military member of that country d...
in places where doctors can prescribe marijuana for medicinal purposes, how do they get dosage and frequency correct considering the variety and efficacy of all the strains of the drug?	[ "It is not prescribed the same as other medications. The doctor doesn't fill out a prescription and have you take it to the pharmacy. Instead, they simply give you a \"recommendation\" granting you access to possess it legally. It is mostly on the patient from that point to make decisions about which strains may a...
Why is it okay that I lose so much hair in the shower?	[ "Hair grows in a cycle. Every single hair on your body goes throw three phases:\n\n1. Growing. This phase can last weeks, months, or even years. Different hairs spend different amounts of time in this phase, which determines the maximum length of that particular hair. For instance, eyebrows generally spend a sh...
What is dandruff and how does pyrithione zinc (head and shoulders) stop it?	[ "Dandruff is typically caused by fungus that grows in the deep part of your hair follicles. When the fungus grows there, your immune system is activated and causes inflammation, which leads to extra skin cells being shed faster than usual.\n\nThe fungus grows in the indented space that your hair sits in (it's calle...
What the hell is Homestuck and why is it so popular?	[ "Homestuck is a comic story on the internet a lot of people like. [Here's the website.](_URL_0_)", "A better explanation is [this one by the author](_URL_1_)." ]
Why is a person whose name isn't known called a John or Jane Doe?	[ "This is really interesting, but apparently..\n\n > The John Doe custom was born out of a strange and long since vanished British legal process called an action of ejectment. Under old English common law, the actions landowners could take against squatters or defaulting tenants in court were often too technical an...
Xi Jinping	[ "He'll probably be the leader of China at some point soon.\n\nChina is kind of a big deal." ]
If I was in the vacuum of space and a small asteroid traveling at 10,000 MPH collided with me, would it go straight through me or would my body speed up and travel with it?	[ "It would plow through you in a bloody spectacle of gore and transfer some of its force to your corpse, sending it speeding along the same path.\n\nThere IS a force for the asteroid to push against. As it hits you, your body is going to push back against it with equal force, which will slow it somewhat. Unfortunate...
I'm unemployed and without health insurance, I've yet to file my taxes, can I avoid paying the penalty fee?	[ "The requirements are that you had health insurance last year, not that you have it right now. You're not going to retroactively change that.\n\nIf you're unemployed, don't hesitate to try signing up for your state's Medicaid program.", "Step one, see if you qualify for an exemption:\n\nYou don't have to...
what happened to netflix stock since 2011? stock declined 70%. doesnt seem to make their service less awesome. how is their company, which it seems like every one i know subscribes to, decreasing in value?	[ "They've lost a lot of customers due to a lot of changes to their service. I know that I, for one, cancelled my service as soon as they jacked up the prices." ]
Why do the majority of Americans drive automatic cars as opposed to manual (stick shift) cars?	[ "European here. The question is, why does the majority of us still prefer manual cars? I had a manual car, because it's the norm. But actually, it only adds an unnecessary task. The only reason there are still manual cars is because people want it out of habit, but there's no real reason nor does it make any sense...
How did it work out that basically the entire world used Arabic numerals?	[ "The reason is really its efficiency. Not just the idea of \"0\" (although that's the main reason, almost every early number systems missed that), but the fact that we can do multiplications and divisions MUCH easier than with Roman numerals. Also, it just feels natural: we use base 10 system because we have 10 fin...
how the term "cracker" is supposed to be insulting to white people?	[ "Cracker is derived from a white man who used a whip. These were commonly cattle men who lived in the south (particularly northern Florida) who use the sound of the whip to control the direction of the cattle herds. It is derived from Spanish herding practices. \n\nThere is also a connection to the white enforcers ...
how did a rocket with the computing power of a calculator get people to and from the moon?	[ "Because almost none of the mission was controlled by that computer. It had fairly simple tasks to do. Most of the mission was pre-computed, and further computing was done on the ground at Mission Control.", "Same question will be asked in the future: how did people get to work when they didn't have self-driving...
Why is it uncomfortable to walk slower (e.g., stuck behind a group on a sidewalk) even if I'm not in a hurry?	[ "because it requires you to alter your natural gait and pace. You have a specific stride and when someone is walking slowly in front of you you have to shorten your stride, which disrupts the fluidity of the automatic coordination that allows you to walk without thinking.", "More than likely your casual walking s...
Why can't my front windshield have those defroster lines my rear window has that defrost the rear window really quickly?	[ "It can, my 2003 Ford Focus has it. The wires are very thin and embedded inside the windscreen. It's a very common option in the UK. \n\nEdit. For those of little faith, Google 'Ford Quickclear Windscreen' and prepare for enlightenment.", "I did some reading and everything I found said it basically comes down t...
When in a serious accident and/or near death, why does going to sleep lead to death?	[ "Going to sleep doesn't lead to death, but the inability to wake someone or even get them to respond to pain indicates that something is very, very wrong and may lead to death. So when someone is injured you make sure they can still wake up or respond in some way." ]
How has Descartes's "Cogito ergo sum" has been critiqued?	[ "I don't have a good answer, but I would point you in the direction of Eastern philosophy, i.e., schools of thought that question the very nature of existence and what it means to be. \n\nFrom the Tibetan Book of the Dead:\n\"[Decartes] found that he could find nothing at the point of origin of thought. He erroneou...
How are China and India not huge powers in international soccer?	[ "In India the most popular sport is cricket, and they are the current Cricket World Cup holders", "The sport is not big in these countries. Countries like Australlian and New Zealand are rugby country's, India is a cricket nation, USA plays Baseball and American ''Foot''ball (among others ofcourse). \nIn the futu...
What is going on in Myanmar?	[ "Since it's history, Myanmar has been ruled by either totalitarian dictators or, more recently, a military council. In 2007, there were large pro-Democracy protests which resulted in a violent government crackdown and the death of 13 people (Burma VJ, a documentary, can shed more light on this). For some reason or ...
Why do rockets always look like they're curving/arcing after launch? If their goal is space, wouldn't you want to fly straight up?	[ "You actually want to be curved. If you went straight up, you'd just eventually fall straight down unless you can fly so far that you're out of Earth's gravity.\n\nTo get into orbit, you have to move so fast that when you fall, you then \"miss\" the earth. Orbit is just falling and missing the object you're orbi...
How can the surviving Boston Bomber be charged for WMDs by using pressure cookers whilst Iraq had far worst weapons than pressure cookers but was nonetheless cleared of WMD possession?	[ "Because the military definition of WMD (biological, chemical and nuclear weapons) is different than the US criminal definition of WMD, which includes conventional bombs as well.", "The legal definition of weapon of mass destruction is very different depending on the source of the weapon. The criminal charges for...
Why do some electical plugs have 2 prongs that are the same size, some have 2 different sizes and some have 3? (US plugs)	[ "Okay, so:\n\nTwo prongs (blades) are the minimum you need to make an electric circuit: the 'hot' blade and the 'neutral' blade.\n\nThe 'hot' blade is connected to the house current, and the 'neutral' blade is connected to the return path.\n\nIf the blades are two different sizes, the plug as a whole is said to be ...
Where am I "allowed" to buy a Tesla?	[ "You can and the showrooms will help you place an order. \n\nI think a few states are still preventing this direct model still." ]
What is radiocarbon dating?	[ "Carbon-14 is a highly unstable element. The half-life determines how long it takes for an object's store of an element to naturally dissipate to half. Carbon-14 has a half-life of ~5750 years, so if you find an object with half of the expected C-14, it's 5750 years old. If you find one with 1/4 the expected...
How do electric eels, and other animals that give off an electric shock create that shock?	[ "It comes from specialized muscle cells. Every living cell has a small voltage between the inside and the outside. In muscle cells it's about 0.070 volts (inside negative). In normal muscle cells, the nerve that controls it causes it to lose it's voltage (or even go positive) for about 1/1000th of a second, which t...
How is Future Shop Canada or Best Buy Canada benefiting from trading their games for any game?	[ "From what I heard it was a vendor funded promotion\n\nSource: I work for said company" ]
How can we see milky way in nightsky if we are in it??	[ "The same way you can see your house if you are in it. It looks different from if you were looking at it from the outside, but you can still see the walls.", "The same way you can see your arms with your eyes." ]
So we the UK are now bombing in Syria, where does the extra funding come from for this new front on the war on terror?	[ "The funding comes from the budgets that are already set for your military budgets and are gathered by your taxes. This is why you have a military. Why do so many in the UK think this will be some unfunded thing? Do they not teach how taxes and government budgets work in the UK?", "People often struggle to unders...
Why can Charlie Rose speak to Assad directly but Obama can't?	[ "You honestly think Obama hasn't talked with Assad?" ]
Why laughing makes limbs weaker?	[ "Really deep breath can cause weakness, or specifically a sudden change in how much oxygen is in the blood. Laughter also releases endorphins, which decreases pain and can relax the body. It could also be an example of [cataplexy ](_URL_1_), the term given to sudden weakness caused my strong emotions. It's associat...
If Mars has lower gravity than Earth, how would a martian ocean behave in forms of density and liquidity?	[ "I think you may be confusing if weight is a property of water or of gravity. \n\nFirst, I'll point out that most things can be thought of as a fluid. Most relevant to your question I'll point out gasses and liquids are fluid and can pour over and through each other. [Here, for example, is a video of CO2 being pou...
How do we know where the borders that distinguish each ocean are, (i.e between Pacific and Atlantic) and how were they distinguished?	[ "At the boundaries between the oceans, no, there's no sudden change.\n\nThe technical borders of each ocean are dictated by the International Hydrographic Organization. For example, the boundary between the Atlantic and Indian oceans is defined by the 20E meridian from Africa to Antarctica.\n\nOn a large scale, ea...
Why can I control my breathing, but I also just breathe automatically when not thinking about it? Usually it's one or the other.	[ "Evolution doesn't just give you every ability that could ever help you survive - if it did that, no species would ever die out.\n\nInstead, our ancestors got lucky and developed the abilities that we have today. A few random mutations in a few million years gave us voluntary and involuntary breath control - volun...
If all the food we eat is broken down into sugar then why can't we just live off eating sugar?	[ "False premise all the food isn't broken down into sugar. Sugar is used as the energy source however the body needs fats, minerals, amino acids and vitamins from the food for other essential body processes other than just for energy.", "Not all sugars are the same, the one you break down are usually much differen...
Why is the "www." necessary in a domain?	[ "It's actually not necessary. It's a common misconception, but most sites don't require www. at all. In fact, when it comes to DNS management www. is considered a subdomain of the main address. For example, if I register say, _URL_0_ as a URL, and I pay for DNS Management (Or get my own), I can control all things r...
How do people make computer generated art?	[ "CG art in general is made with a wide variety of software packages. packages like Photoshop for 2D and packages like Autodesk Maya, 3DS Max, Zbrush etc for 3d images and the stuff in movies/ video games. I only listed a few, there are many more. If it is something that you're interested in i suggest youtubing som...
A few years back, all voting machines went from actual paper to computer machines. As such, why do we have to wait for the votes to be "counted" on election night? Shouldn't we know the results as soon as the last poll closes?	[ "\"All\"? As off the most recent election, my district is still using paper ballots.", "Even in precincts where they use computers to collect votes (not mine, we still use paper ballots), they still have to bring the machines back to the elections commissioner's office for the votes to actually be tallied. They ...
Why are AM radio frequencies still used for radio?	[ "There was a previous post about this that made some good points.\n\n_URL_0_\n\nAlso, I work at an AM talk/news station. I agree AM makes no sense for music stations but they still survive as talk stations. Most are operations that have been around for decades, own the transmitter already, and continue for those hi...
If I were to push my hand against a piece of glass for years, would my hand eventually start to go through it?	[ "Glass as a liquid is a long-standing myth that was recently disproven pretty conclusively. You can read about it here [Using 20-million-year-old amber to test the super-Arrhenius behaviour of glass-forming systems](_URL_0_) if you want all the technical details, but glass is definitely a solid. You might put eno...
How can we see through paper when grease gets on it?	[ "I don't know if I'm correct but I can give you my input on it.\n\nPaper isn't so much a solid object, but rather a bunch of fibers that have tiny little gaps of air in between the fibers. If you take 2 pieces of copy paper and draw with a sharpie(or something noticeably dark) on one piece and cover it with the ot...
How does the stock market know the economy is bad?	[ "Computers generally have people interfacing with them.\n\nThe stock market is made up of people, computers just make it a lot easier. These people spend literally their entire day crunching through huge amounts of data trying to predict the future. Their computers are running the most advance software they can g...
Screenshotting HD pics? (Extra in desc.)	[ "A screenshot only records what is displayed on screen. And so lets say you are looking at a QHD picture (1440p) on a phone with a resolution of 720p. If you take a screenshot you will notice that new image is only 720p.\n\nIf you wanted to send the image at full quality you would want to save the original image it...
Why does tons of company's have a mobile website but a company like Apple don't?	[ "As mobile browsers become more advanced, dedicated mobile websites are becoming less and less necessary. A tech company is much more likely to build a single website with a fluid layout that functions properly across platforms to maintain the user experience across devices. Before long, mobile websites will be a q...
Cell phone cloning	[ "The What\n===========\n\nYou used to be able to drive up to the back of a cellphone store and grab their trash which would have tons of printed out orders with ESN numbers (codes that allow your phone to speak on the network) and phone number pairs. You could also order \"chipped\" phones which were modified phone...
It seems clear that subatomic particles aren't solid little spheres, what are they?	[ "Bear with me, physicists, this is super ELI5...\n\nSubatomic particles are both an infinitely-small dot, and a spread-out fuzzy cloud representing the chances that this dot will be seen at any given location. But that gives the wrong idea that the dot is the real particle, and the cloud is just a description of i...
Is there a difference between Creative and Fiction writing?	[ "There is creative non fiction eg. Bill Bryson and creative journalism, fiction is made up or loosely based on real events or people." ]
Why do kids sweat so much when they sleep, even if it's not particularly hot and they aren't under covers?	[ "_URL_0_\n\n\nAccording to the article kids sleep more deeply for longer, have immature temperature regulation ability and more sweat glands. If they aren't running a fever and there aren't any other reasons like too many blankets etc, there's not much to worry about. Most likely they'll outgrow it. Unless they are...
Why do french fries taste bad after they’re cold?	[ "Yer not alone in askin', and kind strangers have explained:\n\n1. [ELI5: Why do french fries taste awful if reheated, but something like pizza is comparable whether fresh or reheated? ](_URL_3_)\n1. [ELI5: What is it about french fries that make them taste so bad when reheated compared to other foods like pizza? ]...
How can I blow and blow and blow my nose and still have snot in there?	[ "Your face actually has a lot of holes inside of it called paranasal sinuses. They're useless; they used to serve a function, but we just don't need the extra space for scent receptors anymore. Now they're just cavities that get full of mucus and bacteria, and they're why you can blow your nose and still have so mu...
What makes a pepper hot?	[ "There is a chemical in hot peppers that can pass freely through the walls to the cells in your mouth. On the other side of nerves in your mouth, this chemical can trigger the same machinery that makes you feel a certain type of pain.", "Chili peppers have a chemical called capsacium. It give the peppers their h...
Why do most animals live less than human beings?	[ "I'm sure a lot of things contribute to the difference; this is just one\n\nI've heard that animals that take care of their children past their reproductive period tend to live longer. Whether a jaguar lives for 1 or 50 years after it stops bearing children doesn't really matter from evolution's perspective, becaus...
what do the ratings water resistant devices have mean?	[ "IP ratings are Dust and Water. The higher the rating, the better the protection.\n\nDust is rated from 1 to 6, one being not dust tight, and 6 is completely airtight.\n\nWater is from 1-8. 1 being not waterproof at all. 8 being completely waterproof. \n\nMost newer cell phones will have a rating of IP at least 54 ...
If we can control our thoughts and daydreams, why can't we control our dreams?	[ "As other posters have said, you can control your dreams. You just need to get the skill.\n\nAs to why you normally can't, is because the rational part of your brain (and I think your memory) shut down while you're dreaming. That's why you can dream about being attacked by a blue possum riding a unicycle while yo...
Why sometimes does only one nostril get congested at a time?	[ "The body does this on purpose. When you don't have congestion issues, your body will swell one side of your nose and not the other to cause a difference in the speed at which air is drawn in through each nostril. Some scents are better detected by quick airflow, others are better detected through slower air flow. ...
Where does the air that causes an organ to produce sound come from and how is it carried to the pipes?	[ "In the Olden Days, it was provided by a set of [bellows](_URL_3_), that some [assistant](_URL_2_) had to keep pumped to keep the organ supplied with air. \n\nNowadays on most organs, it's done with an electric air compressor, though there are still organs with bellows that exist. There's an organ in a church near ...
Why Adam Lanza's school and house were torn down?	[ "It's not really unheard of for such structures to be torn down. Ariel Castro's house was torn down as a [stipulation to his plea bargain](_URL_0_). It's just a way for those involved or otherwise close to the incident to try and move on.\n\nEdit: Google also blocked out Ariel's house on their street view.. but I d...
Why do people in old recordings from the 50's and 60's sound so different than today?	[ "It's called the Transatlantic accent and it was specifically taught to people in the media - news announcers, actors, etc. Your average person back then wouldn't sound like that.", "They are using [Mid-Atlantic English](_URL_0_), an accent developed to sound like a vague mix of upscale British and American Engli...
What performance difference can we see between an athlete that warms up and one that doesnt before a race?	[ "In short, warming up brings the body from its natural state of rest closer to its exercising state during training, performing etc. Essentially, it makes the transition from rest to exercise much more efficient as our heart rate is already substantially increased due to warming up. Our blood circulation is subseq...
Why do you hear a whoosh noise if you put a glass on your ear?	[ "Blood flow in your year. I guess you can hear it because it is amplified in the enclosed space of the glass." ]
Solar EMP, what are they?	[ "An EMP is an electromagnetic pulse. It's a burst of EM energy that disrupts electronics. \n\nThe stars also have \"weather\" and storms. A strong solar storm can send a coronal mass ejection (CME) our way. Basically a big cloud of billion tons of plasma. If such a flare up was to hit earth it'd be a massive EMP st...
What's the difference between vaccines and antibiotics? Why do we worry about the overuse of antibiotics creating super bugs, but worry about the under use of vaccines leading to more disease?	[ "Vaccines are composed of damaged or destroyed viruses. The idea is that your immune system will identify the harmless viruses as foreign invaders and add them to its antibody \"library.\"\n\nWhen a fully functional version of that same virus attempts to attack, your immune system will rapidly identify it as hosti...
Why are there still radar dead spots over the oceans, despite all of the modern technology?	[ "Radar needs a direct line of sight connecting the tower and the object. The earth is curved so if you go far enough away from a tower you can't see any radar towers. \n\nThe ocean is just too big to have a line of sight to from a tower to every part of it.", "GPS is a receive technology, so you can use it to fi...
What's the story behind the cops and donuts stereotype?	[ "So 20-30 years ago pretty much the only places that were open late at night and really early in the morning were donut shops.\n\nDonut shops, which also sell coffee, became a common stop for police officers working late night/early morning shifts because there were few other options avaible.\n\nAdding to that - Do...
Why is child abuse such a huge problem among politicians in the UK, what's the backstory?	[ "It has been said that high up politicians have been abusing children for 30 years, using their status as a way to get away with it. The children didn't go to the police out of fear, and when they did, the police didn't believe them. In fact, if the Jimmy Savile scandal didn't bring child abuse into the mainstream ...
Why are coding languages so hard to understand?	[ "First off, because of your formatting. Proper white space and formatting makes code a lot easier to read and understand.\n\nSecondly, because you aren't that trained in it. German and Japanese sentences might seem unintuitive to you for a long time, even after you learn the basics, until you truely become fluent...
How come we get all snotty when we cry?	[ "It's a drainage thing. Tears mix with mucus in the sinuses, and this thins out the mucus and makes it run from your nose." ]
Why is it that Windows needs drivers and installations, but most accessories automatically work on Linux?	[ "There could be 2 things going on here:\n\nA) linux has a way to know which webcam you are using just by plugging it, it will look around and find the driver for you. (in my experience its very rare when this happens) (windows updates does this, or at least it should)\n\nB) linux has a generic webcam driver already...
How does one go about spending millions of dollars if all of their money is invested in real estate/stocks?	[ "You've hit on a major problem with holding assets instead of cash: liquidity. Liquidity refers to your ability to quickly turn your assets into cash. If you own a couple of shares of stock, no big deal - you just sell them for market price, and walk away with the money. \n\nBut if you own, say 10% of a compan...
Why some movies and tv shows have real operating systems and software on computers and smartphones (like Mr. Robot) while others have fake ones?	[ "It really depends what the show wants to focus on. In the case of Mr. Robot, the show is all about hacking, and appeals to a growing demographic of viewers who know enough about computers to detect fakery.\n\nOther shows, such as crime serials, are focusing on the detective work and the character interaction, rath...
Why was slavery a common practice that occurred in every civilization at some point?	[ "Slavery is viewed as immoral today because we are forming a world view where all people have equal value. For most of history, this was not a widely held view, so civilizations believed it perfectly fine to enslave \"lesser\" people.", "I think before industrialization and automation became a thing it was simply...
How do Windows users get a screenshot of the Blue Screen of Death, since the clipboard is cleared upon restart?	[ "_URL_0_\n\n > All BSODs are stored on your computer. The freeware BlueScreenView not only recreates the BSOD display as-it-was, but also tries to analyze the dumps and find the guilty program/driver for you:" ]
Why are chess careers still viable when computers can beat us all at it now?	[ "Why do people run track when cars can beat them?\n\nThe point of professional chess never had anything to do with the game having a practical value - it's about watching the best players in the world play the game.", "Two computers can play a perfect game of chess, no move will be wrong, no piece wasted. And whi...
Why does crushed ice cool water faster than a block of ice that's the same size.	[ "You've increased the surface area of ice/water interacting. In a block, water is only contacting the ice on the outside of the block. When you've crushed it, you've got far more contact." ]
You know how when you have a headache your temples or certain parts of your head will hurt when you touch them? What's going on there, is that a bruise or a sore muscle or what's the deal?	[ "The deal is adenosine, an endogenous (originating within the body) neurochemical that can cause pain. During a headache the extracellular (outside of cells) concentration of adenosine is increased above normal.\n\nA tiny drop of adenosine placed on the back of your hand would cause localized pain and a red spot (l...
Why does your mouth water right before you vomit?	[ "The extra saliva protects your sensitive mouth and teeth from the acid in the vomit. It is a defensive reflex to mitigate damage from vomiting." ]
How come lots of metals have a grayish color?	[ "Ooh, I know this one!\n\nIt's because how the metal's electrons are placed, it causes their \"resonant\" frequency to be shifted in the direction of ultraviolet frequencies compared to most other atoms. The fact that they aren't particularly responsive to \"normal\" light frequencies means that they more or less r...
If the coil on a speaker cone can only vibrate at one frequency at a time, how come I can hear two notes simultaneously?	[ "A speaker does not vibrate at a single frequency. You know this for sure because of the observation in your post - a musical \"A\" is a different frequency than a \"C\". It does produce a single waveform.\n\nThink of throwing a rock into water. Now throw another rock right after it. The waves you see represent...
The playing style of footballer Thomas Muller?	[ "Sadly I haven't watched Bundesliga in a while, but what I know from internationals and world cups is that Müller is excellent in reading the game. Instinctively he just knows what to do in certain situations, such as when to make a run or when to cross instead of finish. He isn't spectacular on the ball like Messi...
The artificial nose technology used in food processing	[ "Most foods give off some very specific chemicals when rotting. So the \"artificial nose\" is not very fancy -- it's just a gas chemical detector, and when too much of one indicator chemical is present, it marks that this item is rotting.", "It probably is not actually smelling the foods but for example certain f...
When do you award an indirect free kick in soccer?	[ "A penalty is awarded when the attacking team loses out on a \"goalscoring opportunity\" because the defending team broke a rule in the penalty area.\n\nBut if the defending team breaks a rule that doesn't cost a goalscoring opportunity then an indirect free kick - one where the ball must be played to another playe...
What causes the "shuddering" sound when driving with only one rear window down in a car?	[ "billows of air come in and leave by the same window. This causes turbulence through pressure changes. You hear the battle between inside and outside air.\n\nOpen a second window and you create a flow.", "You've turned your whole car into a big whistle. Because it's so much bigger, the pitch of the sound produce...
During a commercial break, what happens to live-audience shows that are NOT broadcast live?	[ "It's called an intermission. They go for a break to get drinks or food or stuff like that." ]
If our bodies are supposed to be able to run on fat reserves, why do we feel weak and are unable to think clearly when very hungry?	[ "> It seems like it'd be a severe disadvantage in a survival situation to be cognitively impaired when you need to find food.\n\nYou are not nearly as impaired as you think you are, it is mostly an issue of motivation.\n\nWe have the luxury to allow ourselves to get distracted by mild hunger...not finishing your ...
What does it mean when the US accuses China of "manipulating its currency"	[ "One of the reasons everything is made in China is because it is cheap. One of the reasons it is cheap is because China has a lot of people that need jobs so they accept low wages because the alternative is to have no job at all and starve.\n\nAs Chinese people start working they begin to earn money and want to bu...
When scientists say that our universe may just be a giant hologram, what do they mean exactly?	[ "What we think and what we know about the universe is strange and complex. I read a book titled \"the holographic universe\" over the summer and in there was a passage about a scientific study conducted on lizards. Scientists monitored the normal eating and sleeping patterns of a specific type of lizard. They then ...
The relationship between Genes, DNA, and Chromosomes	[ "Chromosomes are the physical units of genetic material. \nyour chromosomes are made up of build blocks, DNA, that is in the form of a double helix or staircase that can wind and unwind, to allow for copying of itself and to allow it to be compact. \nGenes are found in your DNA, and there are several genes t...
Why there are so many types of dogs, cats, birds etc when there only a very few types of humans?	[ "Dogs are bred to be different, people have selected specific traits to give us the wide spectrum that we see today, similarly cats have been bred in this way although to a lesser extent (people have been breeding cats for a shorter period of time). Birds are a whole clade of animals, unlike cats and dogs they can...
what is the difference between the new and old testaments?	[ "The Old Testament is a collection of writings in the Jewish faith, which were ultimately canonized into what's known as the Tanakh. It probably wasn't _completely_ finalized until late in the first millennium B.C., but many of the books were written hundreds or thousands of years earlier, and have been preserved a...
What is the difference between a dwarf planet and a moon? Could a moon have its own smaller moon or moons orbiting it?	[ "A moon is a moon cause it is revolving around a planet. That should answer both of your questions. Here is a good question, can a moon have its own satellite, and would it be called a moon too?" ]
Why is orange such a holy color in Hinduism, Buddhism, and Sikhism?	[ "As I understand it it's not orange per se, but saffron which is extremely expensive to cultivate and shows the dedication to the faith through that cost" ]
How come programs never run out of Serial/CD/Activation keys?	[ "Well let's see, how long is the average activation key? 30 characters? Each one can be either a letter or a number, so that's 36 possibilities for each character. That's 30^36, or 150094635296999121000000000000000000000000000000000000 combinations, which is over 21442090756714160142857142857142857142857 times t...
What are the benefits to REI of selling memberships?	[ "Brand loyalty and growth. Members buy more. Plus, REI is a co-op. It's not about making more money. It's about serving its members.\n\nI joined REI decades ago. It's still my preferred place for buying winter clothes, hiking clothes, most cycling gear, sunglasses, day packs, etc. I recommend it to everyone w...
Why is the Sagrada Familia taking so long to complete?	[ "Because the Sagrada Familia is only maintained with aims and donations, which makes it take much longer to build (even stop due to the lack of contributions) than if a private company or the state were to invest." ]
How blood pressure medication works like Lisinopril?	[ "So, your arteries have a layer of muscle around them, this can contract reducing the artery diameter and relax increasing it.\n\nReduced diameter = less space for your blood, the problem is that, assuming you're resting, your heart always pumps the same amount of blood per minute (more or less), this means that ev...

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