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How can my goldfish never hit the aquarium glass on normal condition or even when I change their big aquarium with the small one? | For the same reason you can tell [these guys] are surrounded by a glass dome even though you've never been in that sub before: because glass is not invisible. It reflects light, reflects images, casts shadows, and looks VERY different than the water they are swimming in. It's not hard to pick out that glass is a solid ... |
How are insurance companies allowed to base rates on age and gender? Is this not discrimination? | It is discrimination. Lots of things are. But it's not *illegal* discrimination. Nothing in federal law says insurance companies can't discriminate based on age or gender, so they can. Similarly, most state laws don't prohibit it, so they can. Edit: I was assuming OP is asking about auto insurance, where discrimination... |
Why should a get a Cash Value Life Insurance policy opposed to an IRA, Roth IRA, 401K or something of the like. | Others have trashed the whole life insurance policies, and I am going to admit that you can find a better investment strategy for your retirement. I am also going to admit that I have a whole live policy. The policy is for $10,000, which is not a lot of money considering my term life policy is $400,000. The reason I ch... |
How do guinea pigs, bunnies, and fish see straight if their eyes are on the sides of their heads? | If you take your arm and stick it straight to your right, you can probably see it way out to the side. Directly in front of them they still have peripheral vision, but their vision is more suited to seeing as many predators around them as possible. |
How are anti-whistleblowing laws justified? Is it not always better to expose wrong doing? | It could *maybe* be bad to expose wrongdoing if the information is classified and/or directly puts lives in danger. Other than that, yeah, these laws exist only to protect people who know they are doing wrong.There is really no such thing as an anti-whistleblower law. There are laws that punish people form releasing se... |
Why do humans have to sleep? | We don't know for sure! The best answer seems to be that it helps us remove some of the garbage that the cells in our brains produce throughout the day, and flush them out of the system. Though sleep certainly allows for a number of useful biological and neurological things to happen beyond that, and it's not entirely ... |
Obama's budget and why it was rejected. | As I understand it, this wasn't exactly the president's budget. As you may or may not know, the president can't directly introduce a bill into either the House or the Senate. He has to rely on Representatives and Senators to do that for him. The bill introduced this year that is supposedly the president's budget was in... |
If we do not see air, do fish see water? | No. They actually did a really good segment on this on the new Cosmos. Fish see better than us because their eyes have been around a lot longer. Our eyes evolved from eyes that were made to see underwater in animals that roamed on land. For a very long time, land animals had poor vision because of this.You don't see ai... |
Why was there no big Nazi insurgency/partisan activity after Geramy was occupied? | There was *very* briefly, the regular German army helped defeat some rogue SS units in the weeks after the war ended. For the most part the population wasn't terribly interested in reviving the ideology that just got them bombed to rubble and killed off an entire generation. |
What is the difference between the use of Roman Numeral (IIII) and (IV)? | There is no difference. According to wikipedia, there are even examples of contemporary Roman writings using both IIII and IV in the same document. Ultimately Roman numerals aren't really a rigidly consistent system. Nowadays IIII is pretty much only used in clocks. Artistically, this makes it so that there are four nu... |
Where did the F1-12 keys on a keyboard come from? | Function keys originate from the late 60's as a way for the user to quickly give commands to a program. Unlike other keyboard keys the function keys do not have a specific purpose, what they do will change between different programs. These keys were, and still are, very helpful when a user is in a text only environment... |
why do some armies use chevrons and others use inverted chevrons? Is it simply a stylistic choice or does it have some significance? | I dont exactly know where it came from, but from an educated guess it could be left over from the use of heraldry when it was used to show a particular family association, or even a throw back to the Spartans who used a lambda\xa0 on their shields. Of course if you read the da vinci code, you'd know its a penis. |
why do smokers spit so much when they are smoking? | Possibly because of the taste a smoke tends to leave in your mouth.I dont do this but my boyfriend does. . He could also be getting nauseous. .which tends to produce a lot of spitYou just salivate more, like when you put a piece of gum in your mouth. Source: not a scientist, just a dirty, dirty smoker. |
Why would local businesses want to accept college meal plans? | Ultimately, it's still money. Accepting meal plans is just enabling students to give you money in a way that's really convenient for them. When they decide they don't want their dorm cafeteria's undercooked burger for the fifth night in a row and they have the choice between a restaurant where they have to spend money ... |
Why does your nose get runny when you come in from the cold, even if it wasn’t running before? | The cold makes the snot sluggish. It also makes the cilia that handle your snot production sluggish. So you get goop, that tends to sit in one spot. When you come inside, and stuff starts warming up. This means the cilia can start 'moving it out of the way,' but at the same time you've got a backlog of snot which is no... |
Why does Music, or even Television seemingly get quieter the longer I listen? | Best ELI5 answer I can come up with: Compare it to how a dark room seems brighter the longer you're in it. That's your eyes adjusting to a low level of light. The opposite happens when you listen to a t.v. loud for a while, your ears try to adjust to a high level of sound. |
Why are there so many farmer's fields and empty lots of land in the Hamptons? | 1. The housing bubble collapse/credit crunch hit vacation destinations like the Hamptons extra hard. 2. Anything that isn't beachfront or at least beach-adjacent may as well be on the moon. People don't buy inland homes in the Hamptons. |
What is the "Hook Up Culture"? | This will be hard to explain like your 5 so it'll be like your mentally 5. People want to have sex. But sometimes their to busy to do all their work, have as much sex as they want and to do the relationship stuff. In university for example "think" they are to busy for these things. So what they do is go to parties whe... |
What does Ayn Rand have to do with republicans? | Ayn Rand escaped the horrors of Soviet Russia and wrote several novels about how bad the bad aspects of communism is and also how people should go completely the other way. Those novels explains her kind of thinking, now called objectivism. She tries to explain that people should not feel they owe anything to society e... |
Why does our skin feel itchy and why does it feel so good to scratch it? | An itch is your body saying "Hey, there's something weird here, check it out/get rid of it" Scratching it normally removes the irritation, so your body doesn't send those signalsSometime soon hopefully the mods will have an "itch free" week. |
This picture of a submerged dead cougar. It's covered in algae, but how is it almost still "intact" looking? | No disturbance, and likely no fish in that pond. On the surface insects eat most corpses within days, but underwater, fish must do the job. With no fish, the cold water has preserved the meat from decay by the bacteria in the cougar as well, so the body has remained mostly intact. |
If an infected wound isn't treated, how does it actually kill you? | Yes, the infection spreads eventually to more parts of your body, causing damage in a range of ways ranging from release of toxins or waste products, to actually eating your tissue, to triggering an overreaction of the immune system.The toxins of the infection get into your bloodstream and this overloads the kidneys an... |
What is the congress cloud act? How will it affect us? | At a super high level, there is a process that a foreign government has to go through if they want to request data that resides on servers that are in the US. It involves the DOJ and various court approvals, the purpose of which is to protect the privacy of US citizens. The Cloud Act eliminates that process in favor of... |
If Nikolas Tesla's apparently huge contributions to discovering and studying X-Rays and Radio waves is (now) known, why are these discoveries still not attributed to him? | Because who gets credited for "discovering" something most often has more to do with who was commercially successful with the idea first rather than who thought it up. Especially when multiple people are working on the same ideas at the same time. Tesla was a smart guy, but few of his ideas were commercially successful... |
[X-post from r/interesting as fuck] How is this spinning top suspended in mid-air? | It's a magnetic top, hovering over a large magnet, and the spinning keeps it from flipping over and slamming into the larger magnet. |
How come the pain in my dream feels real? | My guess would be that these discomforts happened as you were sleeping. While generating your dream, your brain said ow this thing hurts lets build that into it. I remember I had a dream about getting shot in the arm. I woke up the next morning to see I was sleeping up against my wall and a nail that used to hold a pic... |
The differences between classes and functions in programming. Bonus points for using python. | a function is just a procedure, whereas a class can encapsulate several different internally defined functions . functions are _callable_, which means that it can be invoked to cause the program to compute the procedure defined in the function and return the result. classes are not called the same way functions are, ra... |
Why do iMac/Macbook screens have better color than PCs for design work? | For the most part, it's because Apple uses higher quality screens than the majority of their competition . If you compare a $500 Acer laptop to a $3000 MacBook Pro, the Mac is undoubtedly going to have a better screen. That's not to say that they're the only good screens, however. Where I work, the graphic design team ... |
How come colorful animals usually mean they are deadly, and most animals keep away from them except humans? | Humans have little instincts and rely heavy on being learned stuff unlike most other animals. If you are say a poisonous animal of some kind and aren't showing it. Predator comes and eats you, predator dies. Nobody wins. But if you show you're dangers, they can avoid you and no one dies. Everyone wins. |
Is a red sky at night really a sailor's delight | Somewhat. Its not an exact science, but it is a good indication of what future weather could be. Weather typically travels west to east, so incoming weather is seen at sunset and outgoing weather at sunrise. at sunrise and sunset, light travels through the thickest part of the atmosphere, and red light is defracting of... |
Why are tongue twisters hard to say? | Because you haven't trained your tongue to move in that way. Tongue twisters focus on the slight movements which your brain can imagine the sentence but your tongue can't reproduce. A simple example, the R letter in spanish, check the video._URL_0_ The tip of your tongue has to vibrate really fast against the roof of y... |
why melting glaciers / ice caps would cause sea levels to rise. | Others have mentioned that the glaciers are on land. I think this is the largest factor but there is also the fact that the floating ice is basically pure water which has a lower density than the salt water of the Ocean. When it is floating it displaces a volume of water V given by: V = / When it has melted it has a vo... |
why does it take energy to think and focus? | Energy is a necessary component to do any work. Analytical thinking is one of the higher-order brain functions, and thus requires a lot of energy to focus enough attention to analyze the material you're reading. I'd suggest getting off of Reddit and away from distractions if you want to make concentrating easier on you... |
How and why is the perception of time distorted during dreams? | When you sleep, different parts of your brain "shut down", to different degrees. And what parts of your brain are shut down vs active can vary during the sleep cycle. Distorted time perception during REM dream states probably occurs because the parts of your brain that are responsible for that function are shut down or... |
Why do we feel strong emotions in our chest? | Hypothalamus in brain is strongly affected by emotions! And in return hypothalamus can affect a vast number of structures in the body! So when you feel strong emotions, the neuronal discharge from hypothalamus alters your breathing, your blood pressure, the tone in the blood vessels, vomiting centre etcDid they mention... |
Why was the more powerful Facebook search engine removed? | Maybe it was becoming too easy to stalk other people and people missed the challenge?', "I would like to know too. It's easier to Google search almost. I had to type in over twenty letters of a channel I have followed the other day before predictive search picked it up.I remember vaguely at the time one political journ... |
Where does the star shape come from? | You mean a five pointed star? The planet Venus tracks across the sky in the shape of a pentagram every 5 years. Humans have known this as long as we've followed the stars, or in other words, a VERY long time _URL_0_", '[This] video by MinutePhysis explains the phenomenon very well. It has to do with refraction of light... |
Why do people say "Dig a hole to China"? Why China specifically? | China may not be the exact other side of the world from the United States but for the uneducated on the subject logic would tell you that it is. Also Chinese culture is vastly different from out own. I'm sure that plays into it a little. |
Is there actually something behind, "Picture the audience with their clothes off"? | It's a mechanism used to make you feel more comfortable. The idea is that if you think everyone is in an uncomfortable space it levels out with how uncomfortable you are and you aren't feeling as "judged". |
How do we get same pressure on every water source in the house? | All water towers are at the same height which provides a static pressure. Pumps move water to the top of the tower, but then let gravity, which is constant, take over. Google head pressure if you're interested in a deeper understanding |
Why schools are cool with obviously scammy fundraisers. | I don't understand what part you're upset with. Why would any of this not be okay, other than the fact that it indicates school funding by the government is too low? |
Why do employers (usually) not explicitly state what the hourly wage of a position will be preceding the interview process? | because they advertise it too low then some people wouldn't bother applying. and if they advertise it too high then some people wouldn't bother applying. so they don't advertise it at all and so you come in and interview and they ask you what your pay history is and try to make the lowest offer they think you'll accept... |
What the hell is up with the low cost cellphone carriers that are marketed in urban/low-income areas? How are they so cheap? | I have Ting. It's pay as you go, and you only pay for what you use. They rent the Sprint towers, so its the same service as Sprint, with Sprint devices and it's WAY cheaper. My husband and I had the 2 phone unlimited plan with Sprint, and our bill was $180 a month. Now we have Ting, same service, no contract, and avera... |
Why are rich Chinese businesses and businessmen investing so much into the Canadian and American economies? | All investors, regardless of where they are at, put their money where they feel it should be. Usually this is the highest return. Sometimes, though, they want to keep it safe and are willing to have a lower return. In this case, Chinese businessmen almost certianly feel that: 1. The level of investment in China itself ... |
What does lack of confidence look like compared to someone who is confident? | Someone with confidence is easy to talk to, they're not shy and speak up generally, rather than mumbling their words. They'll manage to start a conversation, compliment others, and joke around. Whereas someone with a lack of confidence prefers not speaking to others, and if forced to, speaks quietly and mumbles. You mi... |
How did people get fountains to work in medieval times? | Gravity, water and air pressure, and an understanding of fluid mechanics . If you have a body of water , and a very narrow tube leading from the bottom of the body of water to a position that is higher than it, the pressure from the pool will force the water up the tube . So you begin the siphoning process manually , t... |
The passage of time while sleeping. | The passage of time is nothing more than our ability to remember events during that time. You don't remember anything while sleeping save for a few moments dreaming. Set up your web cam and record a video. Put a clock in the background to show the passage of time. Pause recording for a bit then resume recording. Watch ... |
Why do high schools and colleges press so hard on learning a second language? | Partly because it is a unique opportunity. It is very hard to learn a second language as a adult. The best time to do so is early childhood, failing at that, it takes the sort of dedicated, repeated classroom time you'll rarely find outside of an academic setting. If you ever want to learn a second language, that is th... |
I went to bed yesterday weighting 88.7kg and woke up weighting 87.9kg. Where did the 0.8kg go? | People tend to lose in the ballpark of 500 - 600 grams each night while they sleep . Most of that is water loss - so you lose more during the dry months or if the AC is on. In general, you lose about 1/3 of that weight to sweat, 1/3 from water lost while breathing, and 1/3 from CO2 that is exhaled . Of course, the loca... |
how does your body react to both minor, and large losses of blood? | Blood is made up of red blood cells . Your red blood cells are just like any other cell in your body and they need to go through cell division to replenish themselves. The more blood you lose, the more resources are needed to generate completely new cells. With a lot of blood loss, your body spends a lot of its energy ... |
Why are all of the bodies on Mt. Everest left there? | Climbing Mt. Everest is a dangerous business. Most people who die do so near the top, above the final base camp, where it's difficult to reach in the first place, much less to retrieve a body. Carrying all your gear is hard enough, carrying a body is too much work. Only when circumstances are perfect can you get a body... |
How come we can load 4K videos just fine but loading .gif files have trouble? | GIFs are an ancient file format that is not optimized for streaming. GIFs were originally no more than 5-10 frames, and quite small as well . Videos are optimized for streaming. |
Why are there more air quality alerts in the summer? | Warmer air is able to hold more "stuff" than cooler air. That's why 100% humidity at 55 degrees is fine, but 100% humidity at 90 degrees is absolutely dreadful. |
If the US has control over ICANN can they take down any site? Just hypothetically could they take down _URL_0_ | They *could* remove them from the root DNS servers . But that would only stop people from reaching it by going to _URL_0_. Connecting directly via IP address would still work. And there is nothing stopping someone else hosting a DNS server that has manual entries for _URL_0_. |
Why does 1/3 equal .333, 2/3 equal .666, but 3/3 equal 1.0 | Yes .9999 = 1. This is my favorite proof for it: X=.9999 10x= 9.9999 . 10x-x=9.9999 - .9999 9x=9 x=1> Is .999 repeating = to 1? Yes. It is equal to *exactly* 1. Statements like this are basically the founding premise of calculus; i.e. that you can take an infinite number of infinitesimally small iterations, and they ca... |
How do automatic parking garages prevent fraud? | Usually, these machines are in front of a barricade. So, you pull up, press the button, get your ticket and drive through. So, you're thinking walk up, press the button, get the ticket, the barricade goes up, and no car goes through, because you're already parked, right? Many of these garages have induction loops under... |
The Rapture, Israel, Christian connection | Long story short, there are some evangelical protestants who believe that the state of Israel will play an important role in the second coming of Christ, but that it won't happen until state of Israel is made complete. They think that by supporting zionism they are hastening the end of the world and helping to restore ... |
How does the Voyager keep leaving the solar system? | Because nothing of ours has ever done so before, and every time Voyager reaches what scientists thought would be the "edge", they discover Voyager's sending back data they don't expect, which indicates that the sun's influence stretches further than they previously believed. So they refine their theoretical models and ... |
How do we know what colors animals can see and not see? | There's not one way to do this, an animal may have all the "circuitry" to detect a color but behaviorally don't respond. And then there are some species like cats who were long thought to not have color vision because they were uncooperative. Yes, your cat and dog see color, just not as many as us. Some techniques migh... |
why and how some stocks are "voting stocks" | Nope. Not all shares are created equal. Owning 1 share means you own part of the value of the company, but you might not get a say on how the company is run. Alternatively, you might get extra votes for each share. For example, when the government bailed out General Motors, they received special shares which entitled t... |
Why do electronics heat up? | Its basically rope burn but instead of hands its the conductive material and instead of the rope its electronsThe flow of electricity, by nature, has losses due to resistance in the wiring. These losses exit the system as heat. For most wiring systems, the heat loss is not a huge amount. But in consumer electronics, yo... |
Why is red a seductive color? | Because during arousal, blood flows to numerous areas of the body causing them to swell and become more red. Two of the most obvious are lips and eyelids. |
"bulking" in fitness, what is it? What is the science behind it? | There are two types of bulking; clean and dirty. A bulk involves packing on muscle mass and fat as part of a training regime. One cannot gain lean muscle mass, without a fat gain, it's simply impossible. Even if the fat gain is negligible. People bulk for two main reasons: jump up a weight class, and look bigger. The m... |
How do they make artificial sweeteners taste the same as real food? | Look at the structure of [Sucralose] vs [Sucrose] . Notice how similar they are, splenda only having a couple extra chlorine atoms? Because it has the same structure as sugar, your taste buds pick it up as sugar. but the addition of the chlorine atom makes it so your body cant break it down and digest it, so it passes ... |
How do a Hawkes eyes work? | They don't "zoom" per se, like a camera lens would. They just have extremely good vision and can see small objects even from high up. Their ciliary muscles allow them to change the shape of the lens in their eye extremely rapidly. This allows them to focus on things on the ground but they are able to focus on where the... |
How exactly does cling film work? | Static electricity. When you pull it off the roll, some electrons get pulled from one layer to the one peeling off, making some bits positive and others negative. When you wrap it back over itself, those positives and negatives attract each other and it sticks. That's why it doesn't work if you leave it for a while bef... |
How can NASA receive live video from Mars Rover when it's MILLIONS of miles away? | It's not live. What we see is about 14 minutes after it happens. That's as live as it gets.They cant operate it from so far, They use radar and images of the sorrounding area from the rover and the mars artificial satelites to map its nearest surroundings and then procede to script its movements, basicly telling it you... |
Why does water have a strange taste after leaving it in a cup overnight? | Many possible reasons. The cup may have soluble components that leach out. Plastic cups can do this. Water fresh from the tap is often aerated by a small screen in the tap itself. For a while this aeration makes the water taste "better" to most people. Eventually the air all bubbles out, and the water tastes "flat". Fr... |
Do animals have understanding of death? | Of the ones that do, they seem to be mammals, mostly social mammals. Cows, giraffe, elephants, other primates, dolphins, etc. have been seen to act in ways that show they understand death. Social animals tend to be more intelligent because cognitive intelligence piggybacks on social intelligence, and social intelligenc... |
Why are USB Flash Drives so slow if SSDs are based on the same technology? | The main cause of speed differences are the controllers. The controller allows the storage on the drive to talk to your computer. If the controller is not fast enough the speed of the connection to your computer does not matter. This is why an external USB hard drive will be faster than a flash drive. However, you can ... |
Why is much of Europe’s climate mild when Europe is so much further North of the equator than much of North America is? | The gulf stream in the Atlantic takes warm water to Europe and cold water to North America. _URL_0_', "A lot of weather has to do with the topography of the land, and the pressure systems that the topography produces. The United States has 2 mountain ranges that channel air between them. The updrafts on one side create... |
Why do they label generations, for example Gen X, Gen Y, Millenials? | I don't think there's any huge reason ***to***. It just makes it simpler than "kids of \'80s". Does that mean people born in the 80s? People who were in grammar school in the 80s? People who became adults in the 80s? Just call them Gen X and be done with it. It's especially dumb because no one can decide what's what: b... |
What is the difference between a major and minor? | you need to specify what field yer talking about. alot of topics use the terms major and minor. music, academics, sports, etc etc. major means big. minor means small. beyond that, it's totally dependent on the topic |
Why are all the planets and all the stars spherically shaped? | Gravity pulls inwards from every direction towards the center. This force applied to a still forming soft molten celestial body of considerable mass causes it to smoothen out over time. You should also know that most are just circular and not actually perfectly spherical. Earth for example is an oblate spheroid. Due to... |
When do we regulate the free market? | One of the main times that the market is regulated is for utilities. Electrical generation and distribution requires such a large amount of capital that there are huge barriers to entry into said market. Because of this, utility companies are regulated monopolies that are under heavy scrutiny and oversight by a nationa... |
What does the "proof" on a bottle of alcohol mean? | So, it's back in the 1700s. You're a sailor and your salary includes a portion of rum. Your shifty-eyed captain gives you your payment, but you think he's cheating you. He's watering down the rum. How do you find out if he's cheating you without using a bunch of high-tech scientific equipment? You take your rum and som... |
What makes games like 2048 so incredibly addictive? | They're simple, easy to learn, easy to play on many devices, goal oriented and not incredibly difficult to get fairly good at. It's the lowest hanging fruit on the quick, easy rewards tree, with a good difficulty curve that lets people come back and get better and better. |
why reddit hates 9gag so much | Go to the [site]. It's like your annoying 12 year old little brother that's just discovered the internet. |
How can a prosecutor or judge go on record saying they are looking to make an example of X defendant? | The judge typically states that after the person has been found guiltyWhen a judge says something like this, the person has already been convicted. The judge just determines sentencing for a conviction . When it is time for sentencing it is the judges job to apply what they feel is appropriate within the sentencing gui... |
When you have a good stare going on, what is actually happening and why does it feel so good to keep it going? | I know exactly what you are talking about! Some people in past posts say its your brain entering [Default Network Mode], yes its actually called that. But if we are talking about the same thing, its almost like a trance, where you are staring and your mind is fully operational, but it just feels good to be fixated, and... |
How in the heck is Edward Snowden "living" in the Russian airport without being seen? | He's not in the standard passenger area. He is in a hotel at the airport and in some back/employee type areas of the airport. |
How do calluses form so quickly ? | When skin is met with direct ongoing pressure , it starts to basically make more skin on the top layer to protect the inner layers. It doesn't happen overnight, but they can form rather quickly. The proof is in how at first your fingertips hurt but the next day it wasn't that bad. Your skin created a tougher layer of s... |
What is the Invariant Space-time Interval and describe the ramifications for our understanding of Space-time? | It really depends what background you are coming from. Do you know, for example, what four-vectors are? The quick and dirty explanation is the following: In the theory of relativity, all inertial frames of reference are equally valid to describe a phenomenon. You can "switch" from the perspective of one inertial frame ... |
How do people that lose all memory due to an accident or something of the sort retain the use of language and other things? | The type of memory they lose is called [episodic memory], which is stored differently in the brain than language or learned skills. |
Starting with the key of C, how does key of the fifth note in the scale (G) correspond to an increasing number of sharps/flats in the scale? (Details in text) | The major scale is defined by eight notes with seven intervals between them. The intervals are either whole steps or half steps . The seven intervals of the major scale are: TTSTTTS You can imagine this in C major as a tone being intervals with a black key in between and semitones as intervals without a black key in be... |
How do glass fibre optic cables bend without breaking or shattering? | Glass is bendable, the thinner it is the more bendable it is. Glass fibers are very thin, and protected in plastic cables that make it hard to bend then too sharply. |
Musicians of reddit - why is so little modern music in 3/4 time? And why is next to no modern dance music in 3/4 when 3/4 was a Waltz (dance) tempo? | 3/4 time isn't conducive to solo or group dancing, where people gyrate and/or bop up and down to the time. Try even to sit in your chair and nod to 3/4 time-- it doesn't really work. Most of the time, the big beat 1 is too slow, and nodding to every beat is too fast. You can sort of flail about to 3/4, but unless you'r... |
Why are black americans called African-American. | The USA, as a nation immigrants, places great importance on knowing your heritage. Most blacks in the US do not know their tribal heritage due to slavery so during the Civil Rights movement their communities chose the term "African-American" to refer to them instead of the pejoratives of "Nigger |
Why are the coaches of National Teams not required to be of that country? | The job of a coach and manager is hard to regulate. It is easy for players because they have to physically go on the field and play the game. For coaches, however, they can still do their job without direct participation. Let's pretend FIFA creates a no foreign coach policy. The team would hire a local coach and he is ... |
What is CISPA and why we should be trying to stop it from getting passed by Congress. | CISPA stands for Cyber Intelligence Sharing and Protect Act. It's a law to basically prevent cybercrimes such as trafficking intellectual property and counterfeit goods and stuff like the Silk Road. Why do people hate it? It expands the amount of information the NSA can gather without permission. The biggest issue arou... |
why do people think obama is a muslim? | Because they're racist idiots who can't take five seconds to look it up but instead trust the sensationalist pundits portrayed in the media for click bait. |
Why does gargling with salt water help a sore throat? | Salty environments are not normally a good place for most human type bacteria, so basically it kills them offBasically the salt draws out the water from the bacteria in the throat and the bacteria cannot survive without it. Same way its used to preserve food, by drawing the water out of the food to stop bacteria multip... |
How a shaken soda left to settle reabsorbs the carbonation. | It doesn't. A "fresh" soda has the carbonation dissolved in the liquid. Shaking or jarring the soda causes some of the carbonation to come out in the form of gas. However, the process requires a nucleation point which means that the bubbles form stuck to the sides or bottom of the can/bottle. Because it's pressurized, ... |
What makes the earth spin? | The Earth formed from a spinning disk of matter. Because nothing exists to slow it down, it has continued to spin for as long as it has existed. |
What is the purpose of using two different metals in a Thermocouple? | I calibrate measurement equipment and work quite a bit with thermocouples In short you need two different materials or thermoelements in a thermocouple otherwise when measuring the voltage between the two you'll get no difference The long of if it is the two thermoelements are different in the terms of one being connec... |
[Android] Use of the 'super.' keyword in Java. | ELI5: You are the child of your Dad. You can do some stuff like play with legos. Your Dad can do some stuff like mail the bills. If for some reason you needed to pay the bills in your Child class, you do "super.MailBills", even though MailBills is from the Dad class. Note your Dad would 've had to expose/give permissio... |
How does the timing mechanism/delay work on a grenade after pulling the pin and releasing the handle? | When you allow the spoon to flip off of the grenade, the spoon gets out of the way of a small spring loaded striker/hammer that strikes a percussion cap. That percussion cap sits on the top of a fuse . When the percussion cap is struck, it ignites the cannon fuse. The fuse is cut to a specific length which allows it to... |
How does Santa Claus deliver all the presents in one night? | He outsources it to parents around the world. About a month or two beforehand, he would have placed these gifts intended for children all over the world at different malls and websites around the world, so it's not like he does it all in one night actually; he has weeks to do it, and as we all know, it only takes 80 da... |
What is Microsoft Azure and how does it help technology/processes? | Azure is kinda like Amazon web services but it integrates easier with Microsoft products. I personally love doing mvc projects in c# in visual studio. They have a 1 click deploy and it'll deploy it to azure for you. They have databases and just plain servers that you can use as well. |
Why do people bid on eBay auction days before it's over? | Because you don't win an auction by being the last bidder.You win an auction by being the highest bidder. |
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