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Why is it that after we crack our knuckles, we can't crack them again until a little later?
When you crack your knuckles, youre popping air bubbles in the synovial fluid between your joints. After you pop them, it takes a few minutes for air to join back up together and form bubbles again, at which point you can crack them again. And by the way, contrary to popular belief, cracking your knuckles doesn't harm your joints. You can do it as many times as you want, it's just air bubbles getting popped.
What the hell is happening in Yemen?
Yemen has never been a democracy. It has been ruled by the same guy for over 30 years. That guy resigned from presidentship in 2012 after protests. The guy following him wasn't much better in terms of participation. In contrary to the other states on the Arabic peninsula, Yemen is very poor, so the goverment has problems to find any reasons to justifiy their rule. Because of this the old president had some problems with al-qaeda and smaller revolts in parts of the country but he managed to get along. That new guy who is still president as now has not been able to stabilize his rule. He is a Sunni. At the same time there is a group called the Houthis. They are not Sunnis, but Shias. In late 2014 they started a bigger revolt and captured the capital of Yemen. Shia and Sunni are two different branches of Islam. Iran is mainly Shiitic, while Saudi Arabia is the biggest Sunni player. After the revolt began, Saudi Arabia suspected Iran to support the Houthis, because they belong to the same branch of islam. As a consequence Saudi Arabia started an intervention in Yemen. Now things in Yemen are getting tough and foreigners are being evacuated.
Why do people just watch when something is clearly being done wrong by an authority figure? For example, the recent incident where the doctor was knocked cold on the flight.
There is a common and frequently studied thing called the "bystander effect". Basically it states that if someone is doing something or someone is having something done to them, that the larger the crowd the harder it is for someone in that crowd to break the mold and do something to either intervene or assist. In situations like that, there are added pressures like the intervention of law enformement/security personnel that make people subconsiously interprit "someone else is going to handle this". This is the same that happens when there is a car accident as you're passing by and you see a dozen other cars. You're going to most likely assume that either someone else already called 911, or someone else is going to stop. You'll look, but continue on about your business.People are afraid of getting their asses kicked. They feel that people will be upset about it for a month. Tweet about it ,but will ultimately be forgotten when nothing actually comes from it. Probably just fear in general. Not saying it's right. I've been punched in the face for standing up for something with no resolution. Honestly the person who got it on camera probably are the most useful ones. Not the ones being detained as well for getting heated
Why are female pornstars paid more than male pornstars? Isn't that illegal?
How many beautiful women do you know that are willing to let a complete stranger fuck them in the ass and spray semen on their faces? Now, while you're pondering that I ask you, how many guys do you know that would fuck a beautiful woman they've never met in the ass and spray semen on their face? I believe it all comes down to supply and demand .
Why do reporters constantly refer to Pres. Obama as Mr. Obama?
This is actually a tradition going back to George Washington. James Madison and the House of Representatives insisted that he use "mister president" because they were really wary of nobility and executive power. You know, since they had just fought a war to escape from exactly those problems. _URL_0_I don't exactly have the AP stylebook handy or anything, but I know in print at least they refer to a person by their title the first time and then with the Mr./Ms./etc. subsequently. That might be a wide-ranging policy and account for why you hear "Mr. Obama" so often. Edit: Changed "in the press" to "in print" which is more what I meantBecause he's still a "mister". We don't use titles like "Lord
What makes a peanut a common allergen? Of all foods why is it more common to have a peanut allergy?
It's not clear why peanut or tree nut allergies develop. Tree nuts, like walnuts, are another common allergy. At first they thought it was introducing these foods too early and more recently now they tell pregnant women to eat nuts to reduce the allergy. Peanuts also may not be the most common, but clearly has the most hysteria around it. 1 in 4 parents believe their kid has a peanut allergy while testing estimates that 1-5% are peanut allergic.
How does video compression work? Why am I able to comfortably stream high quality video while still images take a few moments to load?
In short, most video compression works by storing each frame as a difference from the previous one. You load a picture once, and then just change the pixels that are different in each subsequent frame, thus eliminating a lot of redundant information.
Why water makes your skin dry?
water that comes in contact with skin evaporates and takes with it many of the skin's natural oils. The more frequently that skin comes into contact with water the drier it gets, unless the oils are replaced.
Why are vegetables "good for you"?
Basically they're an all natural way to get vital vitamins, minerals, antioxidants, & fiber in a low calorie, unprocessed way. With the proper consumption of vegetables and fruit an average adult can forego a daily multi vitamin.
If the common age of consent in The United States is 16, why is being 18 required to watch adult films?
Federal regulations limit ages on adult films. States decide age of consent. There are several states in the US with consent age of 18.
Are there planets in interstellar/intergalactic space?
Yes, and quite a few. It is not uncommon for planetary bodies to get a gravity assisted slingshot out of orbit of their star. There are even brown dwarfs and other dark stellar-mass bodies floating around interstellar space . edit: They are known as Rogue Planets, here's the wikipedia: _URL_0_", 'One of the hypothesis for dark matter is the existence of massive compact object lying in the interstellar medium such as planet. See _URL_1_However, astronomer looked for them and found out that if there is some there are not enough to be a significant part of dark matter Interstellar space - yes absolutely, for example if a star or a black hole "pass by" and pull the planet away from it's star.Detecting it would be almost impossible and to my knowledge none have been detected. Intergalactic space - not really imo, the energy required to leave the gravitational confinements of a galaxy would be too high. Or in other words - it might be theoretically possible but compared to the rogue planets between solar systems this would be incredibly rare. > Lastly, with no sun, could there be life on them ? Theoretically yes, but it would cool down "fast" without the gravitational pull from an object like jupiter or light from the sun.Radioactivity would be the only supply of heat besides the stored heat.
how does extradition from the UK to the US work?
In general for an extradition to succeed, it has to be for a crime that would also be a crime in the UK. It goes via a normal court proceedings and while they won't goes into the nitty gritty details of the case, the court has to be convinced there is a reasonable chance of a conviction. I guess something like a Grand Jury would do in America? But with appeals. In the special case of the US, the UK will also ask the US to promise that the death penalty is off the table, because the UK is not allowed to extradite if there is a chance the death penalty will be applied.
Placebo effect and how does it work? Also, what is the limit of what the body can achieve by truly believing it to be possible.
The Placebo effect is essentially the belief that something will have a positive effect on you. For example when you drink a cup of coffee you immediately feel more awake thanks to the caffeine? Well nope, caffeine take approximately 45 minutes to kick in. The extent of which the Placebo effect works is pretty hard to categorize, in some cases giving people fake pills can actually deal with pain and such. It really depends on the person at hand and what the Placebo is acting on. Generally however things like pain, anxiety, nervousness, high heart rate, low heart rate, sweating etc will go away even with a placebo. Wiki link if you're interested:_URL_0_ Edit: Changed definition of placebo from "an effect" to "a positive effect" thanks to /u/SpiderHuman.We don't know yet. There are some weird effects, such as it working even if you know it's a placebo. Also a nocebo has a negative effect in the same way. I would guess both placebo and nocebo effects can be very large: an Australian Aboriginal curse involves the person having a bone pointed at them, and in many cases, without being touched, that person dies.
Is Sound Affected by Gravity?
Sort of, but you're probably too dead to notice. Let's say a tree falls and you hear it. If we could change the amount of gravity between you and the tree would the tree sound different? Probably not. Gravity can change the density of whatever sound might be traveling through, but in gases like air the effects of increasing the density are cancelled out by increased pressure. If gravity were compressing a gas enough to raise it's temperature then that would change the speed sound travels. It takes a lot of heat though before you would notice a difference. The inside of your oven doesn't sound weird when it's turned on. Not enough is going on to notice. Liquids are effectively not compressible under conditions you can survive. Again, yeah, if the liquid is compressed enough to change its viscosity then sound is affected. Sound travels much further in water than air but we would need to be talking about water at oceanic depths before you would notice any meaningful changes. Trees don't grow in the ocean anyhow, so again, moot. Solids, again, enough gravity to change the elasticity and resonance of the material through compression would change sound but it's indirect and you are talking about gravitational forces that are incompatible with your interest in philosophy. Other situations where there is extreme gravity you are probably too dead to hear the tree or there is a vacuum somewhere between you and the tree that stops the sound.Sound is moving air particles and air has mass so yes, there will be an effect on how sound works on a planet with significantly different gravity then Earth.
How do news sites get their new articles, which are just minutes old, to the top of search engine results?
They don't get them there, search engines are programmed to find news articles with frequent crawls, and put them there.
The difference between YouTube's buffering and loading an image from anywhere else on internet - and why buffering is so much faster
This might not be the complete answer but a part of the answer. Try loading a video in Youtube, and then a video from a website which is not primarily a video-hosting site . You will notice that the IMDB video takes significantly longer to load for the same quality of video. Google has some amazing compression algorithms, and a great network of servers which ensure you are always getting the best speed possible.
Why are the majority of the tallest buildings in the world located in the Middle East and Asia?
Tall buildings are created for two reasons. One is that there is no space to move out so you have to go up. The other is because people need to prove that they are better than other people. If you have lots of money and plenty of space as some people do in the Middle East then you build to outdo. If you have little space and lots of people as they do in Asia then you build to accommodate. */u/mackana is right. There are 3 reasons. I'm not sure how I overlooked tourism. If you build it they will come.
If an infinitely fast car was on a finite loop, (ignoring physics laws which throw it off the track) wouldn't it just ram into itself? If not, why?
It's a truly meaningless question. An infinitely fast thing is everywhere at once, defying any notion of "where it is" or of "hitting or not hitting" anything.Speed is distance over time. So to get back to the starting point with no time passing you would have to divide by zero, which is undefined in math. So the answer is we don't know.The length of the track minus length of the car will always be the distance the car has to travel to hit itself regardless of speed. So no.Not really an answer but a fun fact. If you slope the track at an angle around 47 degrees your car can theoretically travel at infinite speed without sliding off. Obviously infinite speed isn't possible, but you get the point.
What to internet speed tests really show you?
90 Mbps means a little over 11 MB/s. Internet speed tests show the speed from your computer to the nearest testing server. It's tested by downloading and then uploading a standard file. That testing server is usually in a big industrial datacenter with really good connectivity, so there is no bottleneck on the server end. For real-life usage, you're talking to servers that can be far away, with complicated routing paths from your computer to them. It's also possible that your Internet provider either keeps a testing server on their own network, or has configured their systems to recognize traffic to a testing server and give it high priority, so you get better numbers. In general, tests show you the best case scenario, and real-world usage is going to be a lot worse.
Why can I hold my pees in for much longer when I'm just lying in bed?
Gravity, mostly! Also, when you are lying in a supine position, your core muscles are not contracting as much as they would be to stabilize a standing position to keep you upright. Both of these things contribute to the "urgency" feeling you get when your bladder is full.
Why did Google Fiber's replacement "Google Wireless Broadband" fail to expand/develop more?
Google probably realized that it wasn't going to be as profitable as they expected and decided to stop dealing with the hassle that is being an ISP with physical lines to maintain
Why aren't there any normal 5.5% alc./vol beers that are also light in calories?
There is a direct correlation between alcohol content and calories. Calories are units of heat. Alcohol is literally flammable. Your body can absorb a pretty tremendous amount of energy by metabolizing alcohol. The high the alcohol content, the more calories, pretty much as a rule.There's more to it than just the calories in the alcohol. If the 'body' of the beer does not match the strength, it is an unsatisfying drink. You can test this yourself by making beer with a kit. Usual instructions are to add 2lbs of white sugar. If you add 3lbs, you will get much stronger beer with less body. Great if all you want is to get drunk as cheaply as possible. It is not good beer though. It will taste like a weak beer and the alcohol will really sneak up on you. Not too bad if that happens at home but you wouldn't want a pub full of unexpectedly drunk guys.Carbs and proteins each have 4 kcal per gram, but alcohol has 7 calories per gram. Fat has 9. Furthermore, alcohol is metabolized differently from other calories; if you work out really hard, then have a beer, the alcohol slows or stops the muscle-building you were working out to get.
Why does every nightly news report on the major networks run the same stories every night?
Here's pretty much how they pick stories: 1. What can we get from the Associate Press 1. Did anyone mail us a VNR?1. Is anything important actually happening 2. Election? Talk About Candidates.3. Relevent Historical Events.4. Anything on the Police activity report today? Go stand in front of it and read the one line of news.5. Weather. The AP is a big organization and "The News" buys a subscription. Anything the reporter sees in there that's interesting, they run with. It saves them time on actually finding stuff out. A VNR or Video News Release is a fully filmed and produced video from some else's PR team that you just air and don't have to do anything to. Usually the PR team just gives them to every station. The stations like them because they don't have to do anything, but press play on the tape.
Why do humans need purified water when animals can drink whatever water they want?
It's a safety thing. You could go drink water out of a spring and probably be fine. Maybe. But you run the risk of the water containing harmful bacteria. It's the same reason we cook most foods but animals eat it raw. Now, if you had always drank from that pond, your body might have adapted to those bacteria and they would be rendered harmless by you. But since you mostly drink purified water, your body isn't ready for contaminated bacteria. My dog has always had tap water, so he sometimes gets sick if I let him drink of natural water sources because he's no more used to those bacteria than I am.
Why are those last few drop's of pee such a relief?
As a male I cannot relate to this, might just be me though. I just never heard of this. Theoretical I assume it is because of the pressure. When you pee it forces a pressure on your urethra, and the walls expand. When the pressure stops, the expanding of urethra stops, and you feel a relief. I presume someone has a better answer. This is just what popped into my head. Again I have never experienced what you explained.
How does clearing your throat work?
Your respiratory system is kind of a paradox. On the one hand, in order to work properly it needs to stay well lubricated. But on the other hand, you can't breathe snot! So your body needs a way to keep things lubed up down there in your chest, while also having a way to get excess mucus out of the way. Essentially how this works is that your body makes respiratory mucus in the lungs and all up and down your airway, and gradually "nudges" it up the pipes to your *pharynx* —\xa0that part of your throat that's right behind your mouth, that you can see when you open wide and look in a mirror. As this mucus "migrates" upwards, it collects in your pharynx, giving you the urge to clear your throat. When you do, you expel some air from your lungs in a sharp blast that dislodges the mucus from the walls of your pharynx. It typically comes up into your mouth —\xa0sorry, this is a little unpleasant to describe —\xa0where you reflexively swallow it. Your digestive system then breaks the mucus down into its base components and "recycles" it, essentially.
Why do Formula One look like super technological advanced driving vehicles, while NASCARs just look like cars?
Nascar and stock car racing evolved out of redneck bootleggers with a carload of moonshine trying to outrun law enforcement back during prohibition. They did this using every day vehcles, perhaps with modified angines and suspension, but they were still "off the shelf" or "stock" cars. These days, they only LOOK like regular cars, of course. They are extremely high tech cars, nothing really "stock" about them at all. But they LOOK like regular cars because of tradition.NASCAR has a TON of rules to ensure that everyone's car is nearly identical as much as possible. The point is to emphasize the drivers skill and take engineering out of the equation. A forumla 1 car on the other hand is designed to be as fast as human engineering can possibly build.
How the body knows when to start digesting food and when the food exits the stomach?
When you eat something, it goes in your stomach. In your stomach, the acids eat away at the food, but not all of your food. Then it gets thrown into your small intestine, the intestines have little things kinda like an antennae which touch the food and go, "We got food in here from the stomach, bring the chisels and the hammers". The stuff that came down now breaks up the food in your intestine. Then tentacle like things grab onto the smashed up food and eat it with smaller tentacle things. What doesn't get eaten goes into your large intestine and water gets taken out, and little bacteria eat the food and poop out other stuff we need. Then we poop out the stuff we don't need. And if you eat a lot of beets, it turns red. So don't eat a lot of beats. TL;DR eat food, antennae tell body to send stuff to break food, food gets broken up, tentacles eat food, we poop it outAs soon as food hits the stomach, it goes into action. The stomach starts digesting the protein with acids and enzymes. It then squeezes small amounts at a time into the small intestine, where the acid is neutralized, the fats are digested by more enzymes, and nutrients are absorbed. The food gets pushed down the small intestine, digesting and absorbing along the way, until it hits the large intestine which removes the water, then you deposit the remainder in the toilet. source: A & P 2
Why would Chechen terrorists want to attack the US?
I'm Chechen. It's because those two were fucking idiots that's why. I hope the survivor is interrogated and put to death. They are traitors to the country that took them in, and traitors to every Chechen alive. I'm at work, but if you got questions ask them. As somebody who's fiercely pro-American and pro-Chechen . you can imagine I'm on damage control today..Keep in mind that just because the suspects are Chechen, doesn't mean that they did this for political reasons relating to Chechnya. According to the older brother's social media: "I don't have a single American friend. I don't understand them." So the bombing could well have arisen out of their failure to integrate into American societyThis is impossible to answer at the momentThe last news article I saw said they 'd been in US for 10 yrs and there was an interview with their uncle from MD who basically said "they're mad because they're losers"and that his nephew should turn himself in and beg the victims\' forgiveness. I don't think it had to do much with Chechen beliefs or their heritage.Probably came to the US, failed to integrate properly, couldn't get laid and went all crazy violent. You think I'm joking but this is probably close to the truth. Think about it.
Why do we only sneeze while we are awake?
Do we only sneeze when awake? Now I've gotta try to get my family to sneeze in their sleep. For science!
Why does my body crave exercise even though I hate it when I'm actually doing it?
I believe the body releases hormones that make your physical well being better after exercise and thus not having those endorphins for a while will cause withdrawal like symptoms. They improve your mood, circulation, sexual hormone intensity and also stimulate your metabolism and digestion so that your body is aware of it's fuel burning properties. It's not at all a bad thing; if however you really do dislike running while you're at it, perhaps switch to resistance training to keep things interesting? Same effects, I can vouch for that.
If Matter Cannot Be Created or Destroyed, How is the Universe Able To Keep Expanding?
It's the space that's expanding, not the matter in it. We aren't getting new matter, there's just more space for it to be in. Also, matter can be created from energy and "destroyed" back into energy. It's the amount of energy in the system that can't change, not the amount of mass.
Who takes over essential jobs during a strike?
If you are referring to essential services such as police, firemen, emergency rescue etc, in many jurisdictions it is actually illegal for them to strike. For example in New York State the Public Employees Fair Employment Act has banned all public employees from striking since 1967, and in the UK the 1919 Police Act bans all police from going on strike. In exchange, many of these laws have a binding arbitration clause in case of an impasse in labor negotiationsEmployees who are not part of the union, typically employees who have a manager title but no direct reportsIn a chemical plant or refinery, operators will strike every few years for better contract employment terms. When this happens, engineers, engineering supervisors, and "people from HQ" report to the plant to temporarily cover for operators until a deal is struck and the operators come back to work. They typically staff at a minimum mandate to keep the place going, and sacrifice strategy and optimization during that time. These shift worker, "blue collar," operators are really the backbone of heavy industry and they wield their power to negotiate better terms when they can by striking', "Usually it's the people working there. I my country there are strict laws that in essential jobs, people working in hospitals, power plants, etc., not everyone is allowed to strike at once. There is a certain minimum level of service that the people working there needs to deliver so that for instance sick people in need of surgery don't die because the surgeon is on strike.Outsourcing is also an option. Go to a company that can fill the absolutely necessary staff asap and pay them.
Why do clothes shrink when you put them in the washer?
thats true clothes shrink in the dryer not the washer. they shrink because the moisture leaving the cloth forces the weave of the cloth to tighten together.for natural fibers such as cotton, linen they will shrink when washed then heat dried for the first few washes only then they should wash with little or no shrinkage. but man-made fibres such as lycra and acrylic tend to be much weaker than natural fibres and cant handle high heat. so when you dry it at high heat you weaken the fibres and it will lose its shape, shrink or even disintegrate.some man-made wont shrink, such as polyester,nylon, vinyl, and rayon. if ever in doubt if something will shrink of not look at the label! if it is made out of man-made fibers or says to wash at low heat, then do. if your ever unsure wash on the lowest possible setting and be esp. careful with 'machine wash cold' synthetics.
How is it we can make zero calorie sodas, yet we can't figure out how to make zero calorie beer?
Fermentation occurs as yeast breaks down the sugars in the grain. While we can synthesize things that taste sweet without any calories, we can't change the fundamental laws of chemistry that govern the brewing process, and those laws state that you need fermentation to make beer, you need sugar for fermentation to occur, and sugar contains calories.
Why isn't tax added on to the list price in the US?
This has been asked before: _URL_0_ But every time it gets asked again, I appreciate how many people here aren't from the US, which is good.Because it looks smaller. Plus, every state and even county has different tax rates, so in chain stores that could be challenging.
How does pain medicine work?
"Analgesics," the technical term for pain relief medications, actually refers to several different *categories* of medication, each with a *very* different mechanism of action. TL;DR: we're not really sure how the most common over-the-counter pain medications work, but have a pretty decent idea how opioids work. One of the more common categories is non-steroidal anti-inflammatory drugs . This includes ibuprofen , naproxen , and good, old-fashioned aspirin, among many others. These all work by interfering with a specific category of enzymes that are involved in the production of certain hormones. . . which in turn has anti-inflammatory and pain relief effects. We're not exactly sure why, but there you go. Then there's acetaminophen, also called paracetamol, the active ingredient in Tylenol. We're even less sure how that one works. It's *not* the same mechanism as NSAIDs, we know that much. Also, whereas NSAIDs have anti-inflammatory properties in addition to analgesic properties, Tylenol and related medications have "anti-pyretic" properties, again via a mechanism we don't really understand. *Then* there are opioids. Morphine. Codeine. Hydrocodone. Oxycodone. Opium. *Heroin*. Etc. These directly bind to "receptor" sites in the brain and nervous system generally having a variety of effects. One of the most notable is pain relief, as opioids basically block your nervous system from registering pain by occupying all of your pain receptors. But they'll also do a number on your gut and suppress your breathing to the point that you'll *die* if you take too much. Far, *far* more powerful drugs than either of those discussed above. Which is why they're very strictly controlled in most jurisdictions, and some of them are just outright illegal pretty much everywhereMost medicines work by having a more favorable bond to the specific receptors. The medicine blocks the feeling of pain by not allowing your natural signalling molecule to bond with the pain receptors.
Why do women still go to Chris Brown concerts while knowing he abuses women?
Because they like the music, presumably. Plenty of people don't change their buying habits just because they don't like what the person they're buying from does.
How come sometimes lightning seems to crawl across the sky and other times a giant bolt just appears instantaneously?
When it "crawls," you're probably seeing a bunch of near instantaneous small jumps rather than one big near instantaneous jump. Lightning happens when there are big charge imbalances, big enough to overcome the resistance of the stuff between. If a high charge evens out with a lower charge beside it, that area could then be higher than the next area over. That continues on. I'm not 100% sure on this, but it sounds good in my head.
Why does my stomach "growl" when I'm hungry?
Normally, your stomach muscles goes through a process called Peristalsis where it expands and contracts in order to move food around and keep digestion going. From what I understand, when you are hungry your stomach is moving a lot more to get every scrap of food and use it for digestion. This movement is the "growling" that you sometimes hear. This what I understood from my biology class, if I am wrong someone please correct meA few hours after you eat and you begin to get hungry your body will contract muscles in the digestive tract to try to rid of any left over contents in your stomach so you can eat again. It does this because as your food/stomach contents go down into your intestines gas travels with it and moves around. The growling sound is gas getting squeezed.
Why does it seem like more technological change happened between 1900 to 1950 than from 1950 to 2000?
Seriously? Since 1950, we've turned into a computerized society that understands how to manipulate our own genomes, we're building robots and actually getting somewhere with AI. There are literally robots wandering around on Mars right now. We are reprogramming viruses to defeat genetic diseases. The internet contains a huge portion of human knowledge, and the amount is increasing daily, and millions of people carry around devices that can access it anywhere they go, and each of those devices are computers ridiculously more powerful than all the computers on earth back then. We're building massive physics experiments like the LHC, an array of space telescopes orbiting the Earth, the Moon, and Mars as we speak. There's a gigantic international space station orbiting above us which is now being resupplied by privately run space companies. We're tying electronics directly into nervous systems. The world's barely recognizable compared to 1950 :)
Can someone please explain witch craft to me in detail?
Witchcraft isn't a single thing, many cultures throughout the world preform different versions of 'witchcraft'. The term originates from Christianity and related to any religious practice that wasn't Christianity. When Christianity became a dominant religion some cultures retained certain ceremonial practices from their old religions, Voodoo for example is a blend of Christianity and African tribal religion. There are also certain fringe new-age religions that expressly practice witch craft, the Wicca religion is based on pre-christian pagan religions and has an emphasis on nature with mother nature being the Godhead.
How does one go about learning a language when they don't have anyone to speak it with?
There is no way to become fluent in a language without speaking with people who are native to the tongue. That being said I would recommend a free website called Duolingo. You could also try watch videos online in French or reading articles. I am no way an expert but these are some great places to start.
Why is it hard to make a fist when you first wake up?
When you go to sleep, in a simplified sense, your brain deactivates your muscles. When you just wake up, your muscles are also beginning to "wake up" so it would be hard for you to have total control of them right off the bat.When you sleep the brain activates a paralysis circuit so you don't sleep walk and hurt yourself. When you first wake up that safety mechanism probably has not fully disengaged, hence the momentary muscle weakness.
Why is women’s handwriting generally better than men’s?
This has been asked many times before . While there are some physical explanations, like development of motor skills happening earlier for girls There are also social reasons, like girls being encouraged more to care about looks and boys to be fast and rough. Whichever is more important we can argue about but I doubt we will be able to reach a conclusion. Personally I'd argue for the social part because there is too much variation in the development and age of children in the same class, so by that logic the boys born early should be able to learn to write as nice as girls born late in the year . Personally I can write as nice as a girl if I want to take my time to do so but most of the time I write fast and rough because used to be a little boy many years ago.. I'd really like to be able to write nice AND fast though, but I have not mastered that yet. _URL_0_
Why is one side of aluminium foil less shiny than the other?
When the aluminum foil gets really thin, it could be torn by the tension required to further thin it. To prevent this they run it though the rolling machine in two layers. There the aluminum is on the polished steel rollers, it is shiny. The side that's against the other sheet of aluminum is not as shiny. Here is a [Video explanation]. The doubling up starts about 5:40 in the video.The local CBC station was interviewing someone from the Aluminum foil company before thanksgiving. Lots of discussion on cooking turkeys and he finally came up with the line "now for the question everyone seems to have a firm position on -- which side of the foil goes out?" After being very confident and informative the company rep was rather flustered and said something to the effect of "it doesn't make any difference, it's just an artifact of the manufacturing process."Which side is supposed to touch your food? :OIn the final production stage, two layers of foil go through a pair of steel rollers. The side that the rollers touched becomes shiny. So says Reynolds anywayWow, I always thought the dull side was waxed to prevent the food from sticking or getting a metallic flavor from the foil. Huh, TIL.
Magnetos in a Cessena 172
Aircraft use magnetos, which are driven off the engine instead of a battery, making them more reliable at the cost of some performance. Remember, a car with a busted ignition will fail and coast to the side of the road, a plane with a failed ignition will turn into a glider and crash. Think of magnetos as a crank generator hooked up to a transformer stepping up voltage to neon sign levels. This high voltage is used to create a spark. As long as you have a turning engine, you'll have a spark to keep things going. Your Cessna has a dual spark system, which improves efficiency and redundancy, two separate magnetos power a two sets of sparkplugs, independent of each other. Switching the ignition key to isolate each magneto as part of your pre-flight checks will show you that both ignitions work. [More info]
why do downloads start completely over when interrupted?
It's far easier to implement. Essentially, your web browser communicates to websites using a whole set of protocols. One of them is HTTP. HTTP has a command called GET. You can use this to retrieve files. Due to the nature of this protocol there is no way to GET **part** of a file. So if you have to download the whole thing again anyway then you may as well discard the corrupted file and start over. When the protocol was created, they probably weren't expecting such large files to be send over the internet. So the idea of starting again probably wasn't so scary! There are other protocols that exist. For example this isn't a problem when downloading Torrents. But in that case you use a torrent program instead of a web browser.
Why didn't the big bankers go to jail after the Wallstreet collapse?
Because the government hasn't believed it can prove violations of criminal laws. Simply issuing an investment that drops in value isn't a crime and proving fraud is hard. It's like the difference between inattentive driving resulting in a collision, and intentionally driving one's car into a pedestrian. It can be hard to prove beyond a reasonable doubt what a driver was thinking, unless the driver tells someone or leaves other evidence of their thoughts. The settlements the banks have signed with the government contain admissions of misrepresentation and don't generally settle firm nor employee criminal charges. Allowing the government to continue investigating any criminal charges it may have been pursuing, but criminal trials require a higher standard of proof than a settlement.
This is a little late, but explain how wind chill works.
It doesn't get colder with more wind. However, it *feels* colder. Your body loses heat to the air around it. The wind carries away this warmed air, and replaced it with more cold air so that you can lose more heat.
Why do old people's voices change?
True ELI5-Their vocal cords get stretched out. There is a surgery that can fix this. I seem to recall seeing an older person who had it done, and it was jarring to hear them with a young voice.The pitch of your voice is controlled by muscles that pull your vocal cords tighter when they're flexed. As we age, things tend to get less taut, so your vocal cords aren't pulled as tight and your voice gets lower. Also, your vocal cords can get bumps on them from hard use. That can affect the sound of your voice as well. Note that the first part is the same story with eyesight. The muscles that pull the lens in your eye aren't as taut, so you have a harder time seeing things up close. Edit: taut, not taught
What's different about the air inside a bag of chips from the air outside of the bag, that it doesn't make the chips go stale?
The bag is filled with nitrogen. Because the chips sit in this altered atmosphere, no moisture, no oxygen, and no micro organisms, the chips stay fresh, crisp, and in top quality longer. Here's more about modified atmosphere packaging _URL_0_", 'Moisture content. As the chips begin to dry out, the moisture causes the air in the bag to become more humid. As long as the bag is sealed, the air in the bag will reach a level of humidity high enough that moisture starts re-entering the chips at the same rate that it leaves them. The larger the mass of air, the drier the chips will be when this equilibrium is reached . When the bag is left open, the mass of air exchanging moisture with the chips becomes "the ambient atmosphere", which means that it's very unlikely that the air will be the right level of humidity to prevent the chips from becoming stale.[It's Nitrogen, as opposed to our atmosphere which is only mostly Nitrogen.]", 'In addition to what has been posted, potatoes are also effected by light exposure. The bags are typically made to be light-proof, which is why they often have that silver color to the inside.
Why aren't you supposed to wake somebody who is sleepwalking?
because of the old wives tale that the trauma would kill them. in fact, you can wake up a sleepwalker at any time to no detriment. it would be just like waking them up from bed.That's not true at all. A friend of a friend of mine sleptwalked off his balcony and splattered all over the street last year. It's actually a serious danger to let them keep blindly stumbling around.
How does air horn generate such a loud noise?
U/Blesshope is talking out of his ass ,he doesn’t know what he’s talking about. Sorry brother.The airhorn uses a diaphragm similar to reed in a wind instrument. The cone is there to amplify the sound/ direct it, but the sound is actually created by vibrations on the diaphragm. _URL_0_
Why is it that most animals can crawl or walk immediately after birth, but it takes human babies months to be able to?
Humans have not had a regularly occurring need to run away from predators since we gained enough intelligence to make fire and spears. Because of this, the inability to immediately walk was not evolutionarily selected against, and so traits that improved intelligence and the ability to run extreme distances were allowed to spread through the population, despite any early disadvantages they might give. So yeah, as many others have said, we're born incomplete, but this is why we have been able to succeed despite that.Humans are sacrificing early life ability for late life intelligence and mobility. Nearly all of the development time and energy is going into building a biological supercomputer, but it has to fit through the narrow human pelvis and is delivered unfinished. Most other animals are born a little farther along, but they have smaller brains and wider hips to accommodate this.
How did our ancient ancestors in Africa deal with sunburn?
By being black, black people don't burn as easily and since the sun is so bright they don't need the skin to absorb as much sunlight to produce vitamins.
How does anything exist tangibly outside of the 3rd dimension?
Dimensionality is a mathematical concept. It's used to describe properties of spaces. If we lived in a 2D world, we would only be able to perceive lines. Any intersection of our universe with a 3D universe would appear to use as a line. We live in a 3D world, so everything we perceive is in 3D. However, we can **describe** everything we see in 3 dimensions: width, length and height. We can also describe our world in 4D . > If you make a dot on a piece of paper with a pen the point would have measurable height, length, and width no matter how minuscule it be; The dot as you describe it, is a mark made of ink on a cellulose surface. It's a visual representation, not really a 1D dot. There may be multi-dimensional universes out there that we can't experience since we can't perceive more than 3D+time.
What would happen to North Korea (and subsequently the world) if Kim Jong Un suddenly vanished?
It would be kept silent for weeks at first while they tried to locate him. North Korean news might fabricate some stories about what he's up to here and there, but mostly they won't talk about him. Something similar happened last year when he took some time off for his health. The entire country would be completely locked down. No unnecessary travel permitted. The Kaesong Industrial Complex will be shutdown. Nobody will answer the hotline phone. Everyone will know something is up. After a while, the military will take over. Everyone in the country will be ordered to tune into television at a certain time for an important announcement, similar to what happened when Kim Jong Il and Kim Il Sung died. The newscasters will announce that Kim has vanished and that the US are almost certainly to blame. They'll announce that the military is working to figure out exactly what's happened and name whichever general is now in charge of the country as leading the investigation. After that, who knows? The North Korean military aren't dumb; they know that all-out war would be hell, but whoever winds up in charge is likely to be twice as old as Kim Jongun and nostalgic for the days where North Korea was truly prosperous. Other world powers will start talking with this new military leader, in secret at first. They will probably be generous with the new leader, trying to court a friend and not wake the giant. Other countries will probably offer enough good deals to placate the new leader, and the status quo will be maintained.
Why do dogs stare at us?
since none of the comments here are actual answers, i'll try to do my best to explain it. first off, dogs are a result of hundreds of years of artificial selection of wolves by humans. they are bred to do work for humans. naturally, the dogs that took direction from humans better than other dogs would have a higher chance at being bred. so over hundreds of years of breeding, dogs became really good at reading human emotion and body language. dogs are one of the few animals that can actually read human facial expressions. when humans look at another human face, we have an automatic reflex called [left gaze bias.] basically it means when we look at a face, we automatically look at the left side of that face. dogs exhibit this reflex only when looking at human faces. dogs will also look to humans when trying to solve puzzles. there have been studies conducted between wolves and dogs to demonstrate this. the test was quite simple. a treat was tied to a rope. it was placed in a cage with one end of the rope hanging out of the cage. the treat was obtained by pulling the rope to remove the treat from the cage, which both wolves and dogs easily succeeded at. the same test was administered again but this time the rope was attached to the cage so it could not be pulled out. a clear difference between wolves and dogs was shown when the wolves worked tirelessly to get the treat, while dogs gave up easily and looked to a human for help. hope this answers your question!
I'm a Senior in High School in New York. We are required for our government class to do 10 political hours, what are they and how do I get involved?
I would ask your teachers or advisers what "political hours" are. I 've never heard of them.
What is the point of 120Hz monitors when we can only perceive 60fps clearly?
Actually, our eyes can quite comfortably perceive differences of up to around 80fps. It's not a *huge* difference above 60fps, but it can be noticeable in frame-by-frame rendered scenarios, such as games. [This diagram] might help you see the peak point. The added benefit of 120hz monitors is that they're capable of generating 60hz *3D* images .I was about to ask the same about 150+FPS in games.I don't think this is the only explanation, but one reason is for displaying 3D images. 3D is achieved by having a different image presented to the left and the right eye of the viewer, and one way of doing this is by making every second frame be for the left eye, and every other frame be for the right eye. You then give the user a pair of shutter glasses that cover up the left and the right eye alternatively, at the same rate as the frames on the screen, so you only ever see the correct frame from the correct eye. This halves the effective framerate, though, so to see a 3D game at 60FPS, you need a monitor capable of running at double that .
How do chameleons camouflage themselves?
They do not. They change colors in response to temperature in mood, not as camouflage. But as to how they do *that*: they have cells called chromatophores in their skin. These cells are layered on top of each other and can expand and contract. When a cell on top expands, it blocks the one underneath. When it contracts, you can see the one underneath. By controlling which colors are visible this way, the chameleon changes color.
"The captain always goes down with the ship". Why is this a thing?
Captains wont intentionally kill themselves no, but they are supposed to be the last ones off since they are responsibly for all crew and passengers. > "The captain goes down with the ship" is an idiom and maritime tradition that a sea captain holds ultimate responsibility for both his ship and everyone embarked on it, and he will die trying to save either of them. Although often associated with the sinking of the RMS Titanic in 1912 and its captain, Edward J. Smith, the phrase predates the Titanic by at least 11 years.[1] **In most instances the captain of the ship forgoes his own rapid departure of a ship in distress, and concentrates instead on saving other people. It often results in either the death or belated rescue of the captain as the last person on board.** Think of it more as a figure of speech, like women and children firstThe captain is in change and responsible for the safety of the ship. If he bails early, the ensuing chaos will make things much worse. > Or does he come along too, assuming everybody else is safe? Usually, yes. However, historically losing your ship was a big disgrace, especially if it was due to carelessness, like running into a shoal. Facing the lose of their careers and the impoverishment of their families, some captains would chose to "herorically" go down with the ship.
How does a deaf person know what you are saying when they gain hearing?
I was born deaf, and I had a cochlear implant surgery when I was seven. Prior to the surgery, I was wearing hearing aids, I was not able to hear well with it, and the cochlear implant helped me to hear, but I can tell you this, it took a lot of practice to understand what people are saying without reading their lips. I am able to understand people and know the surrounding sounds, but it took me, I would say about 5 years to actually understand what I am hearing. It takes a lot of practice, patience and most likely an intensive speech therapy for a deaf person to understand what they are hearingNotice how the person speaking is usually off camera? In the videos, they are either reading the lips of the person speaking, or the person is signing to them as well as speaking. People who have never had the sense of hearing do not comprehend speech when they first hear it. Your question is based on a false premise/botched observationMost deaf people have some capacity to read lips, and many still retain some reduced ability to hear. Improving their hearing just makes it easier to use the tools they already havePlease note that CI does not "correct" hearing. Even at optimal effectiveness it is not perfect, its not even pretty good. It basically makes you hard of hearing instead of deaf. The sound is mechanical in nature and does not sound like real speech, this has to be learned as well. CI is good for some people. My mother who was late deafened and never learned ASL and was only around hearing people, it was an effective treatment. Those like me who uses ASL many times a CI has minimal benefit to quality of life.
What is ethernet and how does it differ from regular internet?
Ethernet is just the particular type of port and network protocol which is used in wired ports to your computer. You probably know what it looks like: a larger, wider telephone connector. This is generally only used in local networks, and once it leaves the building changes to cable or fiber of some sort. The Internet as a whole uses very many different methods to move data, from fiber optics to cable to microwave to satellitesThink of the Internet as a bunch of pipes :-). Some of the pipes are made of Ethernet. Some are made of WiFi. Some are made of other things. They are still just pipes and the Internet flows through them.
Why are scars clearly a different pigment color than the rest of our skin?
Your normal skin was made slowly and precisely like a professional carpenter. Scar tissues was made in a hurry to plug a leak like an amateur DIY emergency bodger.
Why Japanese always do the "V for victory" symbol when totally not applicable(or just in every picture ever).
Its a cultural thing. Like how we say "say cheese" when we take a picture.It's a peace sign. Or if you prefer BECAUSE THEY WON.we used it as kids to mean a casual peace greeting, or saying *deal with it*. DISCLAIMER: Not JapaneseA friend told me recently that it means "cute". That's it. They were in Japan on business and now do the "peace" sign a lot because there it really meant "cute".I had a girlfriend from Japan and she told me they do this so their face will look more cute. Like it will make it look some shape so they will look cuter than not doing it. You know, Japan is all about cuteness.
How is it that the US economy flourished and expanded so extraordinarily during the late 1940s and 1950s when the government was so burdened with war debt?
The USA was more or less the only fully intact industrial economy. We supplied everything. To everyoneIf your country isn’t the one being invaded and bombed war can be quite profitable. The United States was producing an almost unbelievable amount of ammunition, aircraft, tanks, jeeps, rifles, ships, etc. The need to produce all of this created millions of jobs for the previously unemployed, people suddenly had money to spend and many of them spent it on war bonds. War bonds were a type of investment where you buy a bond at 3/4 it’s face value and then after a period of time can cash it in for its full value or more. Despite having to pay more money later the government was able to invest and use this money in a way that more than covered the interest it later paid out. With the US practically untouched by the destruction of the war millions of servicemen came home, easily found jobs, and created a massive demand for homes, cars, and other goods. Factories that were previously making tanks were now making passenger cars to fill this demand, houses were being built and sold immediately and the economy flourished. When the war bonds paid out people spent that money on even more goods.
How does the pedometer know that I am walking and not just shaking my phone?
If you looked at a graph of what the phone was recording as it moves you would quickly see patterns that were unique to walking. The phone records how it's moving in 3 different directions. It also records the magnetic force in 3 directions like a 3 dimensional compass. A graph of this would look like 6 lines all waving around. When you're walking you have a very rhythmic movement and it only happens in certain directions relative to the direction your phone is orientated in your pocket or bag. The same for climbing stairs and a load of other actions. The graphs of these actions will all have unique things about them that the phone can pick out to tell what you're doing. It's like recognising your voice - it's not perfect but it's getting very good.
the contact rules in ice hockey
You cant hit a guy if he is not actively involved in a play . You can not use your stick to impede a players progress . You cannot elbow someone . You cant intentionally push someone head first into the wall in an unnecessary manner . You cant smack someone with your stick to make them fall down . You rrally cant do anything the ref says was unnecessary. . Probably missing a few.
Why is 13 an unlucky number in Western culture?
The Last Supper, the last meal Jesus Christ shared with his 12 apostles, had 13 men total attending it, the 13th of which betrayed Jesus. So 13 was then felt to be an unlucky number by Christians because of itThere's some great mythology here. Here's some more . A year has 12 "true" full moons. And sometimes it will have another one that is extra, which many ancient cultures saw as special and many of those cultures took it to be unluckyMathematicians and scientists, meanwhile, point to preeminence of the number 12, often considered a “perfect” number, in the ancient world. The ancient Sumerians developed numeral system based on the use of 12 that is still used for measuring time today; most calendars have 12 months; a single day is comprised of two 12-hour half days, etc. Following so closely on the heels of a “perfect” number, some argue, the poor 13 was sure to be found lacking and unusual. This fear of the unknown would seem to play into two other popular theories for the number’s unlucky connotation, both of which revolve around the appearance of a 13th guest at two ancient events: In the Bible, Judas Iscariot, the 13th apostle to arrive at the Last Supper, is the person who betrays Jesus. Meanwhile ancient Norse lore holds that evil and turmoil were first introduced in the world by the appearance of the treacherous and mischievous god Loki at a dinner party in Valhalla. He was the 13th guest, upsetting the balance of the 12 gods already in attendance. _URL_0_', "I once heard that it was because you can count to 12 with 10 fingers plus 2 feet, and 13 is unlucky because it's the first numeral in uncharted territory.
how does services like Instagram make profit?
There are three main revenue models online. Advertising, freemium and venture capital. Advertising = letting companies get access to your users for a fee Freemium - pay extra for more features like a mobile app, or other upgrades and purchases Venture capital - screw the business model, let's get big and hopefully sell it to google, yahoo or Facebook. Instagram is in number 3. They tried to use the pics for ads but that was after Facebook bought them for a lazy billion. In reality most transition from venture to either ads, or paid content and upgrades. A lot just want to get bought after getting massive and if they don't succeed with a massive audience they get shuttered.
What MUST be done to fix the water supply problems part of the world are having
Folks simply have to live elsewhere. By most theoretical guesses, we're in the final 25% of Earth's optimal capacity as far as human population. [1] At a point, society will no longer care about who has an iPhone or what happens to Don Draper on Mad Men tonight. Food resources will be spread thin and masses will be forced to sustenance farm. This is expected to begin at around 25 billion humans. [2] People located near abundant supplies of fresh water will prosper.
What is the point of those "Fowarding you to your download in 5.." pages
They basically either make you look at ads, or are there to convince you into paying for a premium service. There's a *slight* chance that they're actually load-balancing and just want you to have something to look at so you don't think it's frozen and hit reload constantly, too.
how the heck does wireless charging work?
Pretty much the same way as wired charging works. When you plug something in, in the charger is a transformer. The transformer consists of 2 coils of wire. One it attached to the house electricity. 1 is attached to your phone. As current passes through the primary coil, it induces a current in the secondary coil. There is no direct electrical connection between your phone and the 120V/240V electricity in your house. With wireless charging the secondary coil is in your phone instead of in the charger. Current in the primary coil induces a current in the coil in your phone.When you run electrical current through something, it makes a magnetic field around the wire. Going the other way, if you move a magnetic field around near a wire, it will induce an electrical current in the wire. So, if you run a current in some coils in the charging pad thing, there'll be a changing magnetic field in the immediate vicinity of the pad. A bunch of coils in the phone have an electrical current induced in them by the pad's magnetic field, and that current then charges your battery.
How long does it take for vitamin supplements do make a positive effect on your health after you take them?
Depends on the vitamin. If you have scurvy and start taking vitamin C, it can make you substantially better in as little as 8-16 hours. If you have a Vitamin D deficiency, and start taking vitamin D, it might not have a noticeable affect for more than a weekMany people taking vitamin supplements are wasting their time and some could even be harming themselves. It is often just marketing that makes you think it will have a positive effect _URL_0_
Why can't we mix firework colours like we can paint?
Because light doesn't mix the same as paint. To make purple you use metals that burn purple. Adding in magnesium can make it a lighter purple, or adding zinc oxide can make a forboding smokey purple. Think of it like this: when electricity is pulsed through hydrogen it looks white, but it's actually a few colors of light mixed together. Here's a guide for what colors different metals make: _URL_0_
LI5: The Stock Market and trading. Can someone explain it to me how they work?
To be honest, I would recommend looking at an [investment fund.] Since you don't know anything about trading, I would suggest not starting to trade until you have some market knowledge under your belt. If you use an investment fund don't try just jump on the hottest fund, everyone has good and bad times, just chose a consistent performer. Once you have a firm knowledge of the trading process then get a few grand and start trading.
What is an intuitive explanation of the Feigenbaum constants?
I'm not sure what intuitive means to you. A visually appealing version is to look at the Mandelbrot set. You have the biggest part which is the main cardioid. To the left of it is a circle. If you keep going to the left and zooming in, you'll find infinitely many circle-like shapes attached to each other. The ratio of the sizes of neighboring shapes stabilizes the further you go. That ratio is the first Feigenbaum constant.
What are the dangers/benifits in protein shakes and supplements concerning muscle development.
Dangers of protein? Basically none. A lot of people say protein is bad for your kidneys, but that's only if you have a preexisting kidney condition and/or are consuming an obscene amount of it. Benefits, in addition to the fact that higher protein consumption helps rebuild muscle after working out, shakes in particular can help your muscles replenish their stores of glycogen, a sugar that they use for energy. There are an immense amount of other supplements out there with their own sets of benefits and risks, I recommend _URL_0_ as a good resource to read up on them.
How can newborn animals instinctively know how to walk moments after birth, but humans take months to be able to even stand?
First of all, not all newborn animals instinctively know how to walk. There are just as many that are born blind, deaf and completely helpless. You are looking at two things here. First of all, there is the question of need. Some animals *need* to be able to walk quickly after birth to avoid predators. Think of wild horses, for example. They roam in herds. Running is how they avoid predators. A newborn foal has to keep up with the herd or it dies. . This behaviour, this ability to walk quickly after birth, is one that was selected for during the evolution of this species. But that is not a universal thing. Plenty of animals are capable of defending their young in other ways after birth . Take newborn polar bear cubs for example. They are born completely helpless. And that is fine because when they are born there is no need to be able to walk, so this was never selected for during their evolution. Now another thing that you are looking at, and that is very specific for humans, is that we give birth to underdeveloped young. We have relatively large heads which we sadly enough combine with relatively narrow birth canals . We need to give birth to young while their brains are still very barely developed simply cause women would not be able to birth them if they stayed in longer. But again, that is fine because we don't *need* our young to run immediately after birth. We are group animals who can carry and protect our infants, so again, evolutionary we never selected for young that can walk very quickly.
Why are birds such loud creatures? How come ground animals (squirrels, rabbits, deer, etc.) are generally so quiet while communicating compared to their flying wildlife friends?
Birds have the ultimate method of avoiding predators - flight. They simply fly away from anything dangerous. This also means they move around a lot and so they scream and yell to find each other. Ground animals have a lot more shit to worry about. They aren't as loud so that they can hide from predators, since they can't fly away.The ability to fly means birds effectively inhabit larger areas, and thus communicate over greater distances.
Why is it common to see the flag of the Confederate States of America in states which were never members of the Confederacy?
Every state has Confederate apologists in it. It's the modern way to fly the Nazi flag without flying the Nazi flag. The Confederate flag, whatever it may have once represented, is now the flag of American White Supremacists, de facto Nazis, and other far right-wing extremists like the Bundy family, whose patron, Cliven "Let me tell you another thing I know about the Negroes" Bundy, doesn't "recognize the Federal Government as even existin\'." I don't think most people who fly Confederate flags would continue doing so if they were ever to realize what it tells the world about them. They 'd certainly still do it in secret, though.People from the south move to other states, and often want people to know they are still southerners and haven't gone Yankee. Also, it is sometimes used as a sign of rural vs. urban, no just north vs. south. Finally, white supremacist groups exists outside of the south, and often embrace the Confederacy and its symbolism.The [Flag of the Confederate States of America]? Or the [Battle Flag of the Army of Northern Virginia] ? Though the Confederate Army did use this flag too, which is where the vast majority of the confusion arises from. I just wanted to add links, the other two responses here are correct.
(kind of NSFW) Why my testicles ache if I get sexually excited for long but do not ejaculate at the end?
Educated guess here. Lots of blood and lubricating fluid builds up in all the "tubes" of your genitals when you sexually excited, and the tubes expand a bit for better flow. The "plan" is all that fluid is expelled in an ejaculation, then all the blood flow goes back to the rest of your body and all your "tubes" constrict back to their normal size. When you don't ejaculate, the tubes eventually return back to their normal size, but all the pent up fluid is still there, so your body is trying to constrict around a mass that "shouldn't be there." It's a pressure ache, and your body has to manually clean it up, absorbing the water and destroying all those "foreign bodies" that are sitting thereBlue balls is a real thing and it affects people in different ways. Its basically you priming your gun so your body goes through the processes to make that happen then you abort it halfway through so you have fluids sitting in your plumbing where it doesnt normally sit.Imagine blowing up a balloon to the point where it is ready to pop, and just leaving it. I imagine that's sort of what happens in my balls. Lots of pressure, but no release.
Why do gas stations charge an additional 10 cents per gallon for card transactions and why is it legal?
Because it isn't illegal. They are a business, and as a business they have the right to charge what they want for their goods/services. Your method of payment places a burden on them, why should they have to eat that cost? You could pay in cash and pay a different price.Just so you are aware, most credit card payment processors charge two fees: a per payment transaction fee plus a percentage fee based on the sale price . So, it typically does cost the gas station more per gallon to process credit card purchases. Also, as of others have mentioned, they can charge whatever they want for the credit card processing It's been a few years, but when I worked in retail it was explicitly a violation of the merchant contract to charge customers any additional fee for using Visa, MasterCard, or AmEx. I doubt it was ever illegal. And I 've seen merchants get around that stipulation by offering a "discount" to customers who pay cash.It's legal because you agree to pay it by being a customer. They could charge $20/gallon for using a card if they wanted. Or nothing. It's becoming increasingly rare but businesses charge extra for credit card transactions but they have to pay to use the credit card system.Its not more for credit, its a discount for cash. Ima just let that sink in. It took me a while to get it tooPlaces that dont charge credit surcharges factor it into their standard pricing. Those who admit their surcharge are actually being more transparent.
why does running just after eating cause cramps?
When you're digesting, a lot of your blood is directed to your stomach and intestines. Which means you have less available for your legs.I used to get awful stomach cramps often when we had to run laps in Gym class in elementary/middle school, and of course got no sympathy and was told to "walk it off". I don't remember if it was before or after eating though, I just always assumed I had shitty stomach muscles or something. Also, the joy of getting headaches almost every day because of side effects of allergy medications and getting ragged on by school mates whenever I complained about the pain.
If velocity affects time then how can we be sure the age of anything?
You don't know with great precision, but you can still make a good guess. We'll be able to use the "13.8 billion years" estimate for a while instead of having to change to "13.8 billion years and 5 days" next week. Here, our precision is only to the 100-million years. Fluctuations due to relativity are negligible there.
Why do we sneeze when plucking our eyebrows?
The nerves for this area are very close to the nerves carrying sensory data from your nose. The signals overlap accidentally.
How does the brain 'click' and come to a conclusion when it receives multiple pieces of information? Why does the brain 'click' for some people, but for others, not so much?
I 'd say it depends on what information one has previously learned and trusts in. If I tell you that "the moon causes the tides" it may click for someone how the moon's gravity can effect a large fluid body on the earth. But for someone who doesn't know how gravity works or who's never heard of the concept it may not click for them how a big ball in the sky can move the oceanwhen your brain connects two concepts together this is by forming a wholly new neural pathway. that formation of a new neural path could be the "click" you're thinking of.
How is the Galaxy s7 IP68 waterproof rated? Even when it has open ports like the USB and headphone jack
The ports aren't open to the rest of the internals. Liquid and gunk can still get in the ports, but that's as far as it goes.
The latter part of the periodic table
> Why are the lanthanides down there? Because it's easier to print on a page than [this]. > Why are some masses in parentheses? Some large elements are really unstable and aren't observed in nature. Instead of putting a weighted average of the atomic masses of the isotopes we observe in the wild, we just list the atomic mass of the most stable isotope we've produced. > And what's with the elements like Uuo and stuff? Some elements have been made and observed but haven't received their fancy pants names from the IUPAC yet. They just have systematic names denoting their number on the table as a placeholder. > How are elements being made with a specific amount of protons? We launch smaller elements in particle accelerators and ram them together. > If we have that control over protons how come we can't make materials like gold or silver? We can, but it's more expensive than just digging an equivalent amount out of the ground.
why silence sounds like a high pitched ringing sound.
What you're hearing isn't silence - it's tinnitus which is generally caused by noise-induced hearing damage. _URL_0_
Why does dog poo come out in a swirl but human poo is usually a log?
Maybe it's because we shit in a bowl of water, and they shit directly on the ground.Greyhound owner here: It does not. Not ever.If you've ever shat in the woods, you'll see the two aren't much different. Shitting directly into a bowl of water preservers the shape of the poo. Shitting on the ground causes the 'log' to deform on itself.
How does Sodium Pentathol (Truth serum) work?
_URL_0_ It lowers your inhibitions like when you drink. This makes it easier for you to accidentally confess to something. But, as with being drunk, it also makes you more suggestible or nonsensical. There's no guarantee that what the person says is the truth.According to Burn Notice, it makes you too loopy to hold together a lie, or even avoid spitting out the truth"in vino veritas" is Latin for "with wine comes truth" a general lack of inhibition goes a long way towards people speaking the truth
Why don't they just make toilet pipes wider so they don't block?
Wider pipes require more water to push more material through, otherwise the water spreads out and drops everything it was carrying like a river delta. Also, I challenge you to make a pipe big enough that it can't clog.
How come there are different ways to defend yourself depending on the type of bear?
I think it’s mostly the same except for Pandas and Koalas. Koalas you just punt and Pandas you act like you want to reproduce with them.
why do children have such simple, underdeveloped palates?
Exposure/experience. As you grow you try new things. And also your taste buds change as you get older because your dietary requirements change.
Why is Greenland called Greenland if it's all icy, but Iceland called Iceland if it's all green? What happened historically?
I believe I've read that scandinavian explorers gave them those names to discourage people from going to iceland so that they could settle it easily, and encourage them to go to Greenland, which would be very difficult for them to live in.Greenland was discovered and named during the Medieval warm period when Greenland was warmer than it is today . When it started freezing again during the Little Ice Age , the Norse settlements died out and only the Inuits stayed there. While we talk about the Norse settlements being frozen out, we should note that they lasted in Greenland 500 years or so, which is about as long as Europeans have been in what is now the United StatesIt was the early Scandinavian settlers who gave the country the name Greenland. In the Icelandic sagas, it is said that the Norwegian-born Icelander Erik the Red was exiled from Iceland for manslaughter. Along with his extended family and his thralls, he set out in ships to explore icy land known to lie to the northwest. After finding a habitable area and settling there, he named it Grœnland , supposedly in the hope that the pleasant name would attract settlersThis seems like a really good explanation _URL_0_
Why does audio sound deeper when slowed down, and higher pitched when sped up.
When audio is slowed down, you're stretching out the sound, effectively making the wavelength longer with a lower frequency. Speeding it up is squishing it, making wavelength shorter with a higher frequency.
What is Throbbing; Why do you feel it when you are injured?
When you're injured your nerves send more messages and are more sensitive so pain becomes more acute. Throbbing is feeling your blood pump through your veins. You can feel this because you nerves have become more sensitive due to the injury.