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What causes that distortion in the air near hot surfaces? | There are two things working together to make that happen. First, when air gets hot, it means the molecules are bouncing around faster. Because they're bouncing faster, they push each other away, and the gas expands and gets thinner . Second, when light goes from a thinner gas to a thicker one , it changes direction ba... |
The difference between beer, ale, lager, stout, draught etc.... | In the most basic sense, there are two main types of beers: ales and lagers. Ales are top fermented whiles lagers are bottom fermented. A stout is a type of ale made with roasted malts. A draught beer is just beer from a keg. If you're looking for more information look at [this thread]. |
What's the physical advantage of sweating more (excessively) during exercise? | The physical advantage of sweating more is that it provides more capacity to cool the body down through the evaporation of sweat. The transition from liquid to vapor reqruires energy, which is pulled from the body in the form of heat. When core body temperature increases less rapid than normal, it enables you to run fo... |
Why do certain foods taste bad when they are actually beneficial for us? | What is \'good\' or \'bad\' for us is often not determined by what it is but rather by how much. From an evolutionary perspective, we crave sugar and fats because this was the most difficult thing to have, and at the same time, its the thing that contains most energy. Our bodies still \'believe\' that this is the case,... |
When dating, why is age difference a big deal for teens/kids, but not for adults? | Children and young adults are on a [diminishing returns] scale of maturity. That means that there's a lot more difference in maturity between a 14 and 16 year old than there is between a 32 and 33 year old. Ideally, by the time you're in your mid-20's your both mature and smart enough to recognize when someone older th... |
how can so many different kinds of cheese be made starting from the same few ingredients and similar techniques? | In many cases, the same few ingredients can be changed in quantity or be substituted for other similar ingredients. Furthermore, preparation methods, aging methods, and storage and packaging methods can drastically change the character, flavor and texture of the cheese, leading to different varieties. Other factors lik... |
Euclidean vs non-Euclidean geometry with examples | Euclidean geometry is the normal geometry you probably learned in school. It's all based on squares and takes place within a plane. Non-Euclidean geometry is literally anything else. One of the simpler non-Euclidean geometries is spherical geometry. Spherical geometry takes place on the surface of a sphere . In spheric... |
Why does an electric kettle make a lot of sound at first, which eventually dies off once the water starts to boil? | Cavitation. Basically, the heating element heats the water just above it. This causes that water to boil, forming a little bubble of gas. This bubble immediately rises, encounters colder water, shrinks and collapses. The repeated forming and collapsing of the bubbles creates the noise. Once the liquid starts boiling th... |
Why when you look sideways at a moniter it looks like a picture negative? | Nope, it's just LCD monitors. LCD stands for "liquid crystal display", because there is a layer of an electrically reactive liquid, enclosed in tiny little cells, over the top of the screen. When the liquid is activated, it turns dark, blocking out a pixel of color. As you move to the side, instead of looking straight ... |
What happens to the roof of your mouth when you eat hot food? | The tissue lining the roof of your mouth is not skin, it's more sensitive tissue. What might be equivalent to putting a hot iron on your arm, could be compared with hot melted cheese on the soft tissue in your mouth. It isn't as tough as skin thus, causing it to blister like skin would. |
Why are females generally shorter than males? | Evolution. Male humans had to fight other male humans to survive so they grew stronger and taller and bigger through natural selection. Females did the nurturing and child rearing and did not need height since they weren't out hunting food and killing rivals.Long bones grow via the growth plate . This is an area of car... |
What would happen (legally or otherwise) if you just up and left your wife/family with no notice? | This really depends on state law however, the only really thing the left behind wife can do is file for divorce or legal separation and request support. Then a judge has to grant such support either as a temporary basis until the divorce is final or on a schedule with finalization of paperwork. However, if there are no... |
From all the US backed dictatorial coups, why was Pinochet's coup the one that gained notoriety around the world? | I'm no expert in the politics or history of the region. But I would surmise that the reason for the notoriety of Pinochet's regime was the egregious human rights violations. As an example, reportedly there were camps solely dedicated to sexually abusing prisoners. From Wikipedia: "One woman testified that she had been ... |
What is the purpose of the sewn on loop on a seat belt? | It has a few purposes: * It stops the buckle seat-belt from rattling against the side pillar. _If you take a closer look, you'll find that the driver's-side seat-belt does not have one, because they should always be buckled in._ * It stops the [buckle] from sliding all the way down. |
What does a software engineer acutally do | I work with some. From what I understand, they write computer code for an engineering project. Often they are part of a team, in which parts of the project are broken up into sections for each person to work on. For example, say you work for a company that makes a video entertainment system like Roku or Apple TV. As a ... |
Why do we wake up with morning face? | When you're up and about and walking around, your heart has to work against gravity to pump blood up into your face. But when you have been laying horizontal in a bed for 8 or so hours it gives blood the opportunity to "pool" or "settle" in your face, resulting in puffiness. You'll get a more extreme example of this if... |
Why do we breathe differently when we sleep? It goes from a mostly silent process to an audible and pronounced inhalation. | Your throat and palate relax when you're asleep, and can restrict airflow. In more severe cases, it causes snoring and apnea. |
Why on maps and globes do they show Antarctica with ice caps but not the arctic? | Basically, under ice cap of Antarctica there is land, and thus it is counted as a continent. Arctic consists of pure ice, without any landBecause Antarctica has land underneath the ice. The Arctic is floating sea ice. |
I spend a lot of time looking at computer and phone screens. What exactly is it doing to my eyes? | Looking at a computer or phone requires concentration and attention. Your eyes need to focus on small print and details. This can fatigue the muscles in the eyes which makes them ache if you spend extended periods of time doing so. Also, you blink less often when focused which can cause dry eyes as well. And that's it.... |
The technical difference between LCD screens and Plasma screen. | Plasma screens are more prone to burn-in, but that is largely a problem of the past if you are looking for a screen to view TV programs on. The two different screens use very different mechanisms to display information. LCDs use a "liquid crystal" that can rapidly be turned between nearly transparent and opaque to let ... |
Why are there so many distinct accents within England? | Same goes for the rest of Europe, lots of very distinct accents and dialects on a very small scale . I think that in the former colonies the language just didn't have time to diversify that much, and now that we have nation-wide broadcasts of "standardized" language there is not so much chance to develop one.People in ... |
Why do so many people dislike NATO? | Why do I feel like you asked a question but told everyone they can't disagree with you or something? Maybe it's just me. Also, this might not belong in this subreddit, I'm not going to start looking for sources for my opinions on an aggressive military coalition for a five year old.Personally, I see it as a relic. The ... |
How do police know if something has happened to a body post mortem? | Bruising, bleeding, clotting, etc occurs differently to a living body than to a dead one, because bruising is dependent on blood flow to the areaWhen you are dead your heart isn’t pumping blood around your body anymore, so if you stab or harm a dead body, then it won’t have the same bruising/bleeding patterns you’d nor... |
How do people know what the Milky Way looks like if we are inside it? | We can observe the area around us and construct a pretty decent idea. We can't look in toward the center of the galaxy well, since there's too much dust in the way to see there or across. But the gravity of those stars still has a measurable impact on the ones we can observe, which lets us calculate how they must be ar... |
Why do so many bathrooms have their light switches outside of the room? | Bathrooms have water pipes in them, and it's safer to keep switches and outlets away from water unless they are waterproof. |
Why do certain colors of lights have a second, differently colored ring around the source? | Go get your eyes checked. You seem to be seeing refraction happening within your eyes. It could be from some minor deformity in the eye like the ones that cause near sightedness and far sightedness, to pressure in the optical nerve. So basically **please go to a doctor as soon as possible.** Source: had something simil... |
Why is UK telephone cable 6-core when you only actually hook up two of them? | Because when you are wiring up a building for telephones, almost all of the expense is the labor. It costs the workmen just as much to pull three-pair cabling as it does to pull single-pair cabling, and the cable itself is only very slightly more expensive. Once that cable is in, it then becomes very easy to install a ... |
Why are we entertained by fiction, though we are always looking for the truth? | Good fiction contains deeper truths about the human condition. It's not just about the specific events of the plot. |
Are we the first on our planet to cross "the finish line" as far as evolution? | Well as you said the question doesn't really make sense because intelligence and self-awareness isn't a goal of evolution. Would other creatures become more intelligent and self-aware if not for us? Maybe. Maybe not. We found a niche and it works for us - if we never were it'd be an open niche for some other creature. ... |
If the human body is only supposed to have about 25g of sugar a day, why do most flavored drinks exceed that? | Or most processed foods.. It's an addiction thing. Your body loves sugar. More the better. So companies load up things with sugar and we all buy them. |
Why does brief lack of oxygen to the brain often feel good? | Ok, this is only a guess , but first to clarify: your vision fading after standing up too quickly is due to low blood pressure, not lack of air. I think perhaps much of the euphoric feeling is actually just adrenaline in response to your body being worried about what's going on. Same reason people get a rush on roller ... |
What about yellow makes it appear lighter than other colors? | Our eyes are most sensitive to green light. About twice as sensitive to it as red or blue. Green therefore is the brightest primary color to our eyes. As you probably know, with light, color is subtractive. If you add all the colors, you get white, if you subtract any color you get the combination of the other two prim... |
Why infrared thermometers measure a mirror's surface, and not the surface it is reflected on. | I have a big, shiny aluminum pot and an infrared thermometer. The thermometer _always_ measures the _reflection_ of what's outside the pot, not the pot itself. Aluminum, and shiny metals, _will_ reflect infrared like a mirror, _but glass absorbs infrared_. It's opaque to it, like a blackboard to visible light. If you u... |
The differences between Toughness, Strength, and Hardness in material science | They are all pretty similar, but there are some distinct differences. Hardness is a measure of how much force can be applied to something before it permanently changes shape Toughness is the maximum amount of energy the object can take without breaking Strength is a measure of how elastic the object it is |
Why does the US have a Two Party System? Is it in the Constitution? | The fate of all first past the post electoral systems is the eventuality of two party systems. With few exceptions, two main parties will dominate the political landscape given enough time. Here is a nice video describing the same:_URL_0_', "There being two parties is not part of the constitution but is a reflection of... |
When zoomed out in pictures, why do buildings appear to have swirls? | _URL_0_ it happens when a computer tries to represent fine patterns with repeating details. The camera is incorrectly capturing and reproducing the image; this is caused by the camera's lack of ability to capture fine enough detail. |
Where do the erratic/random "Call of the Void" thoughts/urges come from? | Since I don't think anyone is going to have a conclusive explanation for this, I personally think that they come out as a result of your brain thinking "what if I just did this" and then you think about what the consequences of it would be. It's just the fact that you become aware that you Could do it, and then you get... |
What exactly does meta mean? | Yarr, ye forgot yer searchin' duties, for twas asked by those what came before ye!]", 'Strictly speaking meta- means "after" or "beyond." Asking a question like "how does gravity work" is a physics question. Our theories and study of physics can approach an answer to that question. A question like "why is the gravitati... |
Why does crab grass develop in random patches? | Crabgrass seeds need the perfect germination conditions. Something that lets them open when the water and heat are just right. And that 'rightness' is when a patch of regular grass dies. Opening the area for it to shoot out and grow because regular grass isn't blocking the conditions. So it looks like random patches be... |
why does it feel good when someone else massages us but not ourselves? | Massages need to take place when you're relaxed. When your massage person does their work you're relaxed, you don't have to do anything while they work on your body. You can't easily massage your back or shoulders with ease or without contorting yourself and creating tension to begin with. Also, the kinds of people you... |
if cocaine and meth release dopamine, why do they feel good? | Dopamine has varying effects in different parts of the brian. It may well induce both pleasure and desire depending on what the rest of the brain is doing at that moment, as well as the place in the brain it gets released. Another factor is the type of dopamine receptors. Receptors can be compared to keyholes which unl... |
How does the FM radio on phones use the earphones as an aerial? | The answer is that the audio frequencies needed for an audio earth connection for the headphones, and the F.M. radio signal needed for the receiver, are so different. Sound is less than 20 thousand Hz, and radio, around 100 million Hz. All you need to do is put a small *inductor* between the earphone's earth connection... |
Why are popsicles included in the "novelties" section at the grocery store? And what makes them a novelty? | It refers to ice cream novelties. That's anything made of ice cream that isn't just ice cream in a tub. So popsicles and ice cream sandwiches and Klondike bars are all novelties |
When I'm cooking, why does stirring the pot slow the onset of boiling? | Yes, stirring adds kinetic energy, but nowhere near enough to make an appreciable difference in temperature. Water takes a LOT of energy to heat up, more than you would ever be able to achieve with a spoon. As for why it slows the onset of boiling, it doesn't really, it just makes it look that way. When you have a pot ... |
Why do we worry so much if excessive worry is bad for us? | Anxiety is normal. Anxiety is healthy. Anxiety is a good thing when it is appropriate: in line with whatever situation is a potential problem. Worried about an exam? Not a bad thing. Excessive or intrusive anxiety is generally a sign of poorly managed anxiety. The way you think and act influences the way you feel. If y... |
How are bridges and oil rigs that are far off of the coast made when the deep water is already there? | Oil rigs are built onshore and then towed to their final location and anchored. Bridges are generally not built over very deep water. When bridge pylons do have to be set in deep water there are several methods for pouring concrete underwaterI once read a book on the Golden Gate Bridge b/c I had the same question. The ... |
Voter ID? Who does it hurt, and how does it not help with vote fraud? | Voter fraud, by way of voting multiple times, is not an actual problem. A single person might be able to cast 10 extra votes by traveling all over & lying about who they are. To make an impact in elections, you 'd need hundreds of people all doing this. They 'd all have to keep *completely* quiet about the plan. Consid... |
Why/How does a epileptic person get a seizure from something like flashing lights? | /u/i_hate_ms Epilepsy in general is caused by faulty connections in the brain that make nerve cells hypersensitive. In the case of photosensitive epilepsy, the signals sent by the eyes to the brain trigger mass unsynchronized firing of nerve cells in the region of the brain that handles vision. Imagine if your computer... |
How did the US Army's Universal Camouflage Pattern ever got approval? | They did [15 evaluations over several years on various options], then adopted a 3 color pattern that was similar to one of the lowest scoring patterns that had not been involved in any of the evaluations. |
Why do air conditioner units always have to be outside? | ac works by exchanging heat, in a very basic explanation it uses coils to pull the heat from the inside air and bring that heat to the coils outside to be cooled off. if that part of the unit was inside you wouldn't be doing anything but moving the heat around. |
Body fat can be burned to provide calories. So why do fat people get hungry if they don't eat? Can't the body easily access those calories? | > Can't the body easily access those calories? Not as easily as the glucose in your bloodstream or the glycogen in your muscles and liver. Your body doesn't want to use the fat unless nothing else is availble. Remember, we evolved in a world where starvation lurked around every corner. Fat was to get us through when fo... |
Why did they use zeppelins in World War 1? | Because they had them and they were desperate to find *anything* that would help break the deadlock of the western front. Keep in mind that all this stuff, zeppelins, aircraft, machine guns, modern artillery, etc., it was all new and untested. Military theorists had of course made tons of predictions of what would happ... |
Why is it that we can hear more ambient and softer noises while wearing earphones rather than listening to something via a speaker. | I assume you mean "ambient and softer noises" *from the audio source*, not the background, yes? If not, I have no idea what you're talking about. But if so, it's a question of volume contrast. Those ambient/softer noises are a lot quieter than the other sounds in the same audio track, right? Like, a *lot* quieter. So q... |
How does the US dollar come back to the US when it has been used in other countries? | If you come to NZ you'll come, bring your US dollar and trade it for NZ dollars that same day someone traveling to the US for some reason from NZ will trade their NZD for USD and tada, it's back in the US. Money rarely stays put, it's always circulating. Exchanges, either at banks or through exchange companies, ensure ... |
Why do bad smells make us throw up? | In case you ate some of it. It's a biological response to purge toxins from your stomach, if something smells rotten, it probably is rotten and should not have been eaten. now we don't eat such things, but hundreds of thousands of years ago when the response evolved we might have.Basically, most things that smell that ... |
How does swishing around some mouthwash for a minute actually repair my teeth, let alone do anything more than "freshen breath"? | Mouthwash doesn't regrow enamel, once it's gone it's gone. What it does is kills the bacteria that causes tooth decay. You can repair you enamel by filling in the area where the enamel is gone with another mineral. Some mouthwash has calcium that binds to the area where the enamel is missing effectively repairing it.Al... |
How does the "ping" command on the terminal actually work? | Simpler explanation: I write you a letter that says "This letter was sent from < my address > on < date > and < time > . Please send me a letter back as soon as you get this, with the exact time and date you received this. You follow the instruction and send the second letter back to me. When I get your letter, I know ... |
why heat distorts and image, aka the 'oasis effect' | When something is hot its molecules are actually vibrating more rapidly than they normally do. Seeing the heat of the object is in-turn heating up the air surrounding it more than the rest of the air. This makes light pass through it differently than the cooler air because the hotter air is transferring away from the o... |
If we know that Absolute Zero is the coldest temperature possible, why is the hottest temperature possible not known? | There are a lot of wrong answers here, claiming that all molecular motion stops at 0K. *That is not true at all!* Heisenberg's uncertainty principle tells us, that it is impossible for atoms and molecules to have zero kinetic energy. Every bound system has [zero point energy]. So, what does absolute zero really mean?--... |
if race is a social construct, then why can't people identify as other races? | People absolutely can identify as other races. But since, as you've pointed out, race is a social construct, someone identifying as another race has to navigate the social ramifications of such an identification. |
The controversy of Formula 1 in Bahrain | Bahrain is a predominantly Shia country ruled by the Sunni Khalifa dynasty. The dynasty is a dictatorship propped up by Saudi Arabia. Last year, as a part of the Arab Spring, people began to protest the regime and demand more democracy. These protests were violently crushed with Saudi assistance. Protests continue toda... |
Why don’t cars have normal outlets? | Well infact some high end luxury cars do, and have done for a while, the main reason I think their not the norm is that a regular socket just seems too bulky for inside your average car, and so the 12v adapter is a lot more practical. |
What's the difference between 1st, 2nd and 3rd degree murder? | It varies by state, but generally: 1st degree murder is a preplanned killing, or a killing in the process of committing another serious violent crime even if your initial plan for the crime didn't intend for the victim to die. 2nd degree murder is a killing that wasn't preplanned or part of another crime, but that wasn... |
What exactly can cause an electronic device to become "bricked" (I.e. the hardware is untouched, but the device cannot be fixed) | You can usually brick something by altering the system software, putting it into a state where you can't ask it to go back. Imagine a computer which only as a keyboard for input. If I accidentally change the software so it ignores the keyboard, the hardware will all function perfectly but the computer will be bricked. ... |
Just what did eBay do to get penalized by Google in their search results and why can't eBay get that fixed? | A large proportion of ebay listings are just a huge wad of terms that the seller thinks people will search for to find their item. This is pretty much how the earliest [search engine optimization] worked - you 'd put a huge list of search terms in a hidden box somewhere on your page. Google caught on quickly and penali... |
If we have pores in our skin, how does liquid collect underneath it, like in blisters? | A couple of ways. 1) Some blisters form *under* the part of the skin with the pores. Some form between the pores. 2) Blisters that form in the dermal sheath contain a lot of activated clotting factors which causes the pores to be clogged up with scar tissue, which allows the body to pump fluids into it without leaking. |
Why is nostalgia painful or bittersweet? | It is often bittersweet but not always. One reason it is bittersweet is because it clearly articulates the passage of time and inevitability of death. Another reason is that when one recalls a wonderful time past it is also very clear that it can never happen again, and that brings a certain amount of remorse. Here are... |
What is ACLU's "The Resistance Training" and why does it matter? | Teach potential protestors how to follow the rules so they don't get injured, because injured protestors don't come out for the next scheduled protest. It covers the rules for being arrested, what to say, and when to keep your mouth shut. |
How exactly does Cannabis kill cancer cells? | _URL_0_ Let it be know while it's been observed in a laboratory, we don't know how to apply it yet, and aren't even sure it will work on humans the way it has on mice. So no one can definitively tell you how the process would work in humans.From quick searches, it seems like cannabis is more preventative rather than a ... |
What does it mean to "re-mortgage" your home? | "re-mortgage" is not a commonly used term. You could be referring to two different things: ** Refinancing** Years ago I bought a house at 7% interest, with a mortgage from Bank A. Since then, interest rates have gone down, so I went to Bank B and had them loan me enough money to pay off Bank A. So now I owe Bank B, but... |
Why do glasses suggest intelligence? | Originally, glasses were made for the literate because they could afford it and illiterate people generally did not work jobs that required very good vision. You can be a farmer with bad vision, but cannot take a job that requires you to read if your eyes do not allow reading. |
What is the Steam Machine that Valve is releasing, and how will it change gaming? | > what is? The steam machine is just trying bring pc gaming to the living room as most pc gamer are seen as they have big computers and have to play at their desk and its not practical to play with multiple people in a local space. So valve trying to cover that part of the market by making an Operating system that will... |
How modifying battery in psp allowed to hack it. | A lot of systems have a "service mode". This is built in by the manufacturer to have access to functions that a normal consumer will not have. Examples of these functions are changing firmware , error reporting or maintenance. By modifying a battery, the PSP is tricked into starting up in its "service mode", which allo... |
Why does sadness or being down occasionally feel like a relief? | Look at it in this scenario, a loved one has been deathly ill for a long time. You've had to sacrifice your time and had to endure a great many inconveniences and financial pressures due to the want and need to help this person. Your income has even been impacted on because of the time you took off from work and the lo... |
Why do some people get off on being angry all of the time? What does it do for them? | Sometimes it is a defense mechanism. I've seen angry people use a general anger-filled disposition to hide insecurities and in doing so they become highly irrational. |
Why do TV shows like "House of Cards" have different directors for each episode? | Principal photography may only take a week or so , but there's always weeks of pre-production and post-production that the director is involved in Principal filming is a full time, 10+ hr days affair. It would be challenging for a director to handle that, and also handle several hours/day of pre- and post- production f... |
Why can men keep producing children in old age but women have the menopause? | We actually don't know. We don't know why human woman experience menopause. It's a somewhat rare phenomenon in the animal kingdom too. While there are a couple of other species that also experience menopause it is not a common thing. Of course we got a couple of hypothesises, but nothing has been satisfactorily proven.... |
Why does my video buffer even though the bar is fully loaded when I am on a slow connection | If you're really not fully loaded, but just loaded way ahead, the answer is this: The video and audio are loaded at different speeds. The load-bar indicates how much of the video *and* the audio has loaded, however, the audio might be lagging behind while the video is ahead. More complex answer: Most videos are encoded... |
Why are my nails only strong if they're short? Why can't they stay strong, like claws? | Thinking of claws, they seem thicker and with a stronger root than our human finger nails which are thin, and broad, and with a different root than claws have. |
If a gang of men with automatic weapons robbed a bank in the UK, wouldn't it take much longer than in the States for armed response? | In both the U.S. and U.K., automatic weapons are very very rarely used in crime. It's not really a typical scenario that the police needs to be armed for. But both countries do have heavily armed subdivisions in their police forces, particularly in metropolitan areas. The UK has fewer such units in other parts of the c... |
Why do women's menstrual cycles sync up? | Apparently its a myth. The study that initially confirmed it was flawed and newer studies failed to find this synchrony. So there you go . . . . |
If water had no surface tension, would you be able to jump into it from any height and (as long as the water was deep enough) survive? | No, it's not the surface tension which hurts when you hit water. Water is dense - a tonne per cubic metre, and hitting it when moving fast means you're trying to move a lot of water out of the way very quickly, which exerts considerable force on your feeble human frame. Compared to that force, surface tension is neglig... |
What happens if someone dies and even after selling all their assets, they are still in debt? | No one else owes their debt except the wife or husband. Sometimes not even then. It is part of why interest is charged. When a mortgage is obtained life insurance is also bought for the outstanding principal. |
Why do people wake up with bad breath in the morning? | Small bits of food have been heavily degraded by the weak digestive enzymes in saliva for hours without being exposed to the outside. Not too surprising, really. |
Why do we lose saturation in our colors for several minutes when we are in the sun for a couple hours? | It's been about 2 years since I studied this, but I think I can take a crack at it. Your cones have the ability to adjust to a wide range of photons/second hitting your eye. For example, a tv screen might have 10^6 TIMES less photons hitting a cone than a bright summer day, but you'll see both just fine. To adjust to t... |
Why can perception of time vary so drastically? Like when you're on drugs, or e.g. slow motion car crashes. | Your brain needs to process everything you see, hear, feel, think, etc. The faster it does this, the slower times goes for you. It's like an assembly line, and the fastest worker is pretty much waiting for the next piece to arrive. So by that logic, all humans and animals perceive time in a different speed depending on... |
How does a Thermoelectric Generator work? | What is really being asked is how the thermoelectric effect works, so I'll try and explain that. Imagine you had a metal wire that has either end held at a different temperature. The electrons in the metal act similar to a gas, where the electrons at the hotter end are moving faster and spreading out more. This causes ... |
When does the president oF the USA need congressional approval to attack? | The Congress "declares war." What presidents have been known to do is to wage undeclared wars, engagements, conflicts, whatever you want to call them. So that's how they get away with it, by not "declaring war".The president is the commander-in-chief. He alone has the authority to issue orders to the military; Congress... |
Why are some people more prone to mosquito bites than others? | I read online somewhere that mosquitoes bite people with O blood group than other blood groups .Don't know how true that is.What's your brother's blood group? |
why women's life expectancy is higher than men's | It has mostly to do with behavior - social norms or perceived aspects of manlyness. Therefore, men are more likely to engage in dangerous activities, show off, etc.Also, men take less care of their health, not going to doctors as regularly as women, disregarding ilness and self medicating more. ", 'Mostly because they ... |
Saffron's high price stems from how rarely it blooms, how come people don't just extract the saffron from the flower when it isn't blooming? | Saffron is the dried blooms of the plant. They literally do not exist when the plant is not blooming as they have not formed yet. What you are asking is the equivalent of "why don't they extract apples from the tree before they grow".Because the flower doesn't exist yet. If you extract it before it blooms, it isn't dev... |
If it only cost 8m to buy out our senators for the ISP deal, why can't we raise that money and lobby ourselves? | Lobbyists don't "buy" politicians. I know that it's the common "I'm angry at Washington" belief, but honestly, lobbyists spend money to convince politicians that the people/organizations that they represent have the correct opinions about some subject. I'm not saying that there's no corruption in Washington. I'm sure t... |
Why can some people drink more than others without getting sick? | I think it's a resistance thing. An alcoholic can take more than a normal person because they drink so much, their body essentially adapts to handle it. Much like drugs in fact, and its the same reason you become addicted - your body becomes dependent on it. |
How come in English we capitalise the word “I” but don’t do so for “a” or other personal pronouns such as “you”? | According to [_URL_0_] it used to be lowercase. Then, people started writing it a little bigger likely because it looked funny all on its own. Eventually, people started to capitalize it. |
What are we smelling when we smell things? | smell a fart? tiny tiny turds floating through the air like zeppelins until they crash into your nose walls/hairsSmall particles of whatever you are smelling get into the air and float around, these particles bind to places in your nose and your body sense this as smell. Different particles bind differently in your nos... |
What is happening when a space shuttle, other aircraft, or meteor enters the atmosphere? | It is actually not friction that causes the red glow. It is because the shuttle is basically hitting a concrete wall when it enters the atmosphere going several thousand mph. It is the compression of the atmosphere that superheats the air around the shuttle. |
Why do some British singers like Amy Winehouse sound American when they sing but others like Lily Allen still sound British? | I think it has to do with their singing style. Many singers seem to lose their accent because a lot of what we hear as an accent is dependent on intonation and the way vowels are pronounced. When you sing, intonation is more determined by melody than by language, and vowels tend to be elongated. The means by which we e... |
The whole DEFCON system. How many steps are there and their meaning. Along with what action is taken at each. | Here are the 5 DEFCON levels, followed by their historical precedent * [5]\t**Normal peacetime readiness**;\tGeneral "baseline" level during times of peace * [4]\t**Increased intelligence-gathering and security measures**\tSporadically throughout Cold War, War on Terror * [3]\t**Armed forces readiness increased above n... |
When a movie star signs up for a big budget movie how/when does he/she get paid? | Talent agent here they get paid multiple times in various ways. There's the lump sum upfront guaranteed money , royalties , and bonuses/incentives , plus numerous other ways depending on the particular movie. The timing of how each of those is paid out is completely negotiable, and varies from deal to deal based on wha... |
How much will the radiation from the Fukushima meltdown really affect North America? | Since we're not exactly sure how much was released, and the leak is ongoing, it's hard to say for certain. That being said, not much - the Pacific is *big*, and releases of larger amounts of radiation have happened in the past . |
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