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I've heard of MRI techniques to identify if a person is telling the truth - with 99.9% accuracy. How do these work? And why aren't they mandatory for serious/violent offenses? | [Even the company that makes them only thinks they're about 90% accurate right now.] Polygraphs have always had admissibility problems in court. It's going to take much more than 90% confidence to adopt them -- if you can get past the possible 5th Amendment issues they bring up.Also, no matter how accurate this techniq... |
Is it true that smoke from incense and candles is more harmful than cigarette smoke? | The health effects of smoke from incense and candles is still being studied, ranging from some studies saying they post no threat to others saying they pose a significant health hazard. Here's a snopes summary with a number of references an quotes: _URL_0_ |
How and why birds move their heads in perfectly smooth and almost mechanical motions. | Birds have very precise muscles in their necks because they cannot move their eyes like we do when we want to look at different things in our field of view. They would have to move their necks to point their head and eyes at something else. Their heads have [extremely smooth stabilized movement] because they need to ke... |
Why after getting an excessive amount of sleep (10-12 hours) do i wake up physically sore and lethargic? | I'll admit I don't know about you beyond sore but everyone has a sleep cycle that our body tries to adhere to. When you sleep longer than your sleep cycle another begins and so your body doesn't want to be awake until that cycle has completed. |
If the icing part of "RICE" recovery is no longer considered good, why do athletes still take ice baths? | Ice is still good if you want to have a functional body part that isn't incredibly painful. If you can't walk or lie down because your knee or back is highly inflamed and very painful, it doesn't really matter if theoretically it could heal a little bit faster because you'll probably just re-injure it out of frustratio... |
If black is the color that absorbs the most energy, why green is used by nature? | Because photosynthesis isn't just about absorbing energy, it's about *harnessing* it, and for that black pigment would actually do more harm than good. The various proteins and enzymes involved in photosynthesis are very fragile, and can only handle so much energy at once. Black pigment would result in too much absorbt... |
Do cats purr on purpose? | Absolutely they can control it. They can vibrate the hyoid bone in their throat just like we can. If you purr at a cat, they will often respond in the same way that if you meow in an upward question style, they will rub against you. No one knows why they purr but it definitely is related to contentment and they often d... |
What power to influence policy does the UK's shadow cabinet actually have? | Shadow cabinet can't directly affect government policy so it's the latter. However as members of Parliament they can vote on acts and issues put before the house. The government can be defeated on an issue if enough MPS vote against them. This is why any party likes to have a majority so that they can push through thei... |
How does gas gets build up on your intestines? | It's produced inside you, largely through digestive processes by microorganisms in your digestive tract. Basically, you've got a fermentation vat in your guts.The bacteria in your body breaks down the food you eat into other components. By products of breaking down the food you eat include3s carbon dioxide, methane, an... |
What is "TCP Limit" and "UDP limit" in Advanced Tomato Router Settings | They limit the maximum number of open TCP connections and UDP ports. So they limit how many different network actions router allows a client to do at the same time. It is one of the many ways to do quality of service prioritizing. Normal user usually doesnt need it or want it enabled. Bandwith limiting is usually more ... |
Why do really, really old (like medieval, renaissance, etc. time period) pictures/sculptures show that the men had really small penises, even though they were adults? (Possibly-NSFW) | They were copying the style of Classical Greek sculptors. The Greeks considered large genitals to be unsightly, and so they tended to sculpt small ones.Penises have not always been the primary symbol of masculinity: during the Renaissance, for example, men's hands were the symbol of strength and manliness . Another rea... |
Why do Canadians call the last letter in the alphabet "zed" while americans call it "zee"? | Canadians call it zed because the English call it zed, and the English call it zed because in Old French it's zede, from the Greet zeta. Americans were the ones who changed it to zee. Mostly just evolution over time, and then Webster made it linguistic canon by declaring it to be so. |
Why are cargo ships only using high-powered hoses to stop somali pirates? | Biggest problem is that while there's nobody preventing you from having a gun onboard in open sea, in 99% of countries, you won't be allowed to dock with firearms onboard. Legal firearm ownership is not a given in most countries |
How come continuing to eat a spicy food keeps the spice at bay until I stop eating it? | Your saliva and the movement of your mouth is keeping the capsaicin from staying anywhere for more than a second. Once you stop eating, it has a chance to stimulate your nerves and start making your mucous membranes crySpicy foods usually contain capsaicin, a waxy chemical in chilis that make them taste hot. Capsaicin ... |
How large corporations recover once they have been infected by ransom ware. | Any corporation with a competent IT department does regular system-wide backups on a daily basis. They also have a disaster recovery plan that allows them to stand up new instances of their critical systems on short notice. And sometimes, they just pay the ransom. They routinely put thousands of dollars worth of softwa... |
why aren't the big companies sharing their self-driving car data to achieve autonomous cars? | Why would google share their technology? Everyone wants to be the first/best in the market because that is how they will make money. There is no reason google would share their technology with a competitor.Well, firstly the software isn't the same, the companies would need to do some giant adjustments to make their dat... |
Why do our eyes "burn" when we wake up without enough sleep? | As you get more tired, your body tries to shut down so you'll go to sleep. That affects the amount of tears that are released by your tear gland. So, less tears flowing, eyes dry out, and it burns. What's your body's solution to that? Close your eyes to cover the dry surface. Which, when you close your eyes, your body ... |
If it is illegal to melt down pennies, how is it legal to press them? | Are you talking about how it's legal for the US Mint to press them? Because they're authorized by law to do so. If you're asking about those novelty machines that strech out a penny, it's because defacing the currency for non-fraudulent purposes isn't illegal. |
Why does twisting something make it easier to go in? | Not 100% sure, but I believe it could be due to static friction vs kinetic friction. Friction coefficient for stationary objects is higher than for moving objects , meaning that if something is already moving there is a lower friction force. Basically any object that is put in motion is easier to keep in motion than st... |
how does adderall, vivans, and ritalin affect the brain? | Unlike many medications, these actually cross the [blood/brain barrier] which means they can actually manipulate things going on in the brain. When there, they tickle certain areas and make the brain release chemicals, which change your mood, etc. |
How does this plastic surgery net thing work? | I found [this article] which explains that scar tissue has a different collagenous matrix than regular skin. Whereas scar tissue has collagen fibers that are arranged longitudinally, normal skin has fibers that are arranged in a "basket weave". This net that you speak of is possibly a "scaffolding" of collagen to promo... |
Why do cartoons decide to change art directions every season? | It's most likely just that they're adapting to changing quality and aspect ratio of television and that they're finding easier ways and making more money to make better quality productions, as is the case with South Park. |
How does music from your phone go through a metal wire and come out as music at the other end? | The wires end in little coils inside the earbuds which also contain a small magnet. When current flows threw a coil, it generates a magnetic field which moves the coil against the magnet. Attached to the coil is a thin membrane that makes the air in front of it vibrate. Essentially inside your earbuds are tiny speakers... |
Why do cats/kittens do the "butt wiggle?" | It's the pre-pounce balance and foothold assessment. From an evolutionary standpoint, an accurate but partly telegraphed pounce probably infers survival benefits greater than a silent miss. |
What does it mean to be non-sentient? | Sentience is loosely defined, with a vast number of people disagreeing on both what it is and what is included. The most common definition is the ability to perceive and be influenced by outside stimuli. Basically, the ability to feel . This definition would include many animals. Intelligence, self-awareness, sapience,... |
feeling the presence or stare of someone nearby | It's a combination of picking up signals you're not conscious about and confirmation bias. Humans do not have some magical ability to sense other humans.Great Through the Wormhole episode about experiments exploring this: [s02e05 "Is There a Sixth Sense?Someone in another Eli5 answered this and said you remember the ti... |
Why are most republicans anti-decriminalization of drugs? Don't they favor less government power? | Speaking in broad generalizations, republicans are against less regulation of business and enterprise, but more regulation of the individual. Someone who is for less regulation across the board would usually be called a libertarian. One way is that a republican is someone who believes that people are fundamentally bad,... |
Why is it that people with diabetes are not allergic to sugar. | When a person allergic to peanuts has a peanut, that persons immune system goes all haywire attacking the peanut, and ends up attacking the whole body as collateral damage. When a diabetic has sugar, it enters the bloodstream but their body is missing the "key" to get it into cells, so It just sits there in the bloodst... |
Where do companies like Winco/other grocery stores get their own brand of milk? Do they have cows? | Grocers often have their own brand of *many* foods and drinks. They simply pay the factory to make extra packages with the store's name on them. They rarely own that factory.Some large chains like HEB or Walmart will have their own factories, or in the case of milk Dairies. Others will simply make contracts with existi... |
2 men responsible for wildfire are being billed $37 million, the cost to put it out. How are they expected to pay this? | If they cannot pay it all now their wages will be garnished from now until the point that the debt is paid. Not all debts can garnish your wages, but governmental debts and legal fines can. These types of debts cannot be discharged via bankruptcy either. Odds are they will be paying for this crime for the rest of their... |
Why do so many cigarette smokers find it ok to litter their butts? | The same reason why other people litter or do things that in general only poorly educated people would do. The world is full of assholes, smokers who just throw the butt anywhere are a good exampleWhen I 've asked in the past, the general response has been "They're biodegradable; they'll go away eventually." This is de... |
17 and need to know how taxes work? | Ask them what you have to do to have the most amount withheld . How do taxes work? I'd say they don't. But to answer your question, an amount gets withheld from your salary each pay check and gets sent to the government every quarter. Then, at the end of the year you file your returns which tells whether you have paid ... |
Why, if the majority of people are right handed, are laptop trackpads usually on the left? | Of all the laptops I 've used, the trackpads are either centered with the laptop as a whole or centered between the home row bumps. Sometimes, this introduces an offset to the left to make room for numerical keys on the right side . Moreover, the spacebar is likely not centered between the home row key bumps. Note this... |
How is not being attracted to a race, racist? | a lot of what determines our initial attraction to someone is completely subconscious. your body smells pheromones and other things like facial symmetry because your body wants to create healthy offspring . for some people it is psychological and could be based on a certain view of a race, and in that case, it could be... |
How can an undocumented immigrant speak at the DNC and not be arrested? | The choice to begin deportation proceedings against any alien is at the discretion of the executive. Being in the U.S. illegally is not a crime, but the situation with crime is similar: the prosecutor isn't *required* to charge anyone with anything. The Obama administration, like most before him, isn't actively deporti... |
If spicy substance is supposed to burn calories, does eating spicy candies help you lose or gain weight? | If by spicy substance you mean something like hot sauce, not totally true. My understanding is that the flavor of a food doesn't affect how many calories you burn, it's what they're actually composed of. |
Why are humans innately "scared" or "creeped out" by insects and arachnids? | This trait is believed to have originated while we were still Humanoids or even "Apes" . A lot of the insects, snakes, spiders etc are venomous and if we were to survive as a species, we had to prevent dying and going instinct from bugs . So, an instinct developed to stay away from the aforementioned animals which you,... |
Why are there so many different programming languages, and what's the difference? | This is because everybody is free to develop a programming language. Besides that everybody has his own taste and requirements. There are languages which are for example more suited for web or standard applications, others may be more low-level to build more specialized stuff. Languages can evolve or fork into differen... |
"OP is a faggot" | It's a meme that comes from 4chan. [Here] is the Know Your Meme article on it.OP means Original Poster. So if I said "OP is a faggot" I would be implying that you as the one who made this thread is a faggot. |
Why do Australians Love the Word "Cunt" | We use it casually in the UK too, when I moved to the U.S. I quickly discovered how easy it was to offend an entire store full of people when addressing my friend as a cunt on the phone. |
The saying "easy as pie" | Googling this would have been a piece of cake!Much better than the saying "have your cake and eat it too". Why the fuck would I not eat my cakei dont think some people understand the purpose of this subreddit |
Some stars appear to twinkle red and blue very clearly on a dark, moonless night. | Have you ever seen the air shimmer on a hot day? When light passes through air of different temperatures it is refracted, just like when it passes through water or glass. When you see stars twinkle it is the light being refracted as it passes through our atmosphere |
Computer, phone, etc. batteries lose longevitiy when a charger is connected for extended periods of time while already at 100 percent charge | It really depends on the chemistry of the battery and any safety circuitry built into it. Leaving a device plugged in at 100% isn't really a problem for average users any more as the combination of lithium ion batteries and protection circuits in batteries, chargers and devices is unlikely to reduce the lifetime of the... |
Why haven't undocumented immigrants that are protected under DACA gotten green cards or become citizens? | Because those who are covered under DACA aren't made any more eligible for Green Cards or citizenship than they were before. They entered the country illegally because they couldn't do so legally; why do you think arriving by breaking the law would make them any more eligible? |
Why are things (cars) reflected on the road? | When the air gets hot, it bends light in a different manner to create the illusion of water on the road or vehicle reflections |
What do human accountants do that computers can't? | They can’t make assessments on if something is or isn’t. Most are programmed as if true= and if false=. They won’t consider if it’s an odd one off where false doesn’t mean XAccounting has a lot more interpretations involved that require human cognition then you might think. Computers are very bad at this. |
the impact of the European fiscal treaty on Ireland | A yes vote means that Ireland, like the rest of Europe, is slowly moving toward a federation. Basically Euro countries don't have monetary sovereignty, which means they have no national control over their currency, as we do in America with the Federal Reserve. With the fiscal treaty they will give up fiscal sovereignty... |
How does the Plumbing on a Rotating Building/Tower Work? | The center of the building is stationary, which you can see an example of [here] All the pipes from the floor would flow to the center of the stationary part, where they'd connect to a piece that can constantly spin . [Here] is an article about the architech from the the tower in Dubai", 'Pipe fitting can be made so th... |
Why is it that some gay women are attracted by other gay women that are very masculine in behavior and in looks that they almost look like men? Is there a grey area? | Gender and attraction are not black and white. Some people are attracted to masculine women some to feminine men. Everybody is different and has what they're in to. So to answer your question of if there is a gray area; yes absolutely, a whole lot of gray area. |
What is the difference between the phoneme /th/ (as in ‘think’) and /th/ (as in 'leather')? | The first is an unvoiced fricative, as in the sound can be sustained and the vocal folds don’t vibrate. Air just passed through your mouth to make the sound. The second is a voiced fricative. Your vocal folds vibrate and you can sustain the sound on a specific pitch. The position of your tongue and teeth is the same fo... |
Why are medication and surgical operations so much more expansive in America compared to other countries? | Our healthcare is among the best on Earth, but our insurance industry is very big and powerful, and they like profit, so they set high prices for products and services. We missed the chance after WWII to nationalize healthcare like with the NHS in the UK, and that let insurance companies get as big as they are today. T... |
Why does symmetry make people look more attractive? | Not 100% sure about this but I think that it is in our genes. Symmetry is associated with healthiness. Back then when it was "only the strongest survive" symmetry was a sign of a healthy individual with good genes. If you have a healthy partner, you and that person are more likely to create a strong and a healthy desce... |
The difference between Black Metal and Death Metal | Stylistic: Black metal vocals are distinctly higher pitched, while death metal vocals tend to have a lower, more gutteral sound. Black metal guitars are also often higher pitched, and the play style creates a more ambient droning sound compared to the slightly more melodic sound offered by many death metal bands. Thema... |
What does today's interest rate change mean for me as a homeowner? Does it affect non-home owners? What real effect will regular people see? | If you have adjustable rate debt - mortgages, credit cards, car loans - your interest rate will go up slightly. If you are "locked in" at a fixed rate, it won't affect you. If you have savings, you *might* also see a slight increase in the interest paid to you. People who want fixed rates in the future will have to pay... |
For the people that answer ELI5 questions: A Challenge! | [link] for the lazy - and i'll give it a try.This has been done on ELI5 a hundred times already, use the search function |
How an engine works, and how it dies? | I'm assuming you mean an internal combustion engine, like the ones found in most cars, here. The basic working unit of such an engine is the piston/cylinder arrangement. The cylinder is a hollow space within a metal alloy block. The piston is somewhat mushroom-shaped, with the head of the mushroom filling the cylinder ... |
Why is it considered offensive to respond to an accusation of bigotry with "Some of my best friends are gay/black/whatever"? | Because before, you are advocating bigotry by yourself. Once you invoke the gay friend excuse, it sounds as if you are claiming that the gays have somehow given you permission to advocate bigotry. |
Why is some handsoap labeled 'Antibacterial' and some aren't? Isn't all soap antibacterial? Isn't that the point of soap? | No, most soaps are just "release agents" which just help remove particulates without actually killing bacteria. Antibacterial soaps actually contain an antibiotic that kills the bacteria. Also you shouldn't use antibacterial soap all the time, it's bad for your immune system. |
Differences in responsibilities between Sec. of Defense and the Joint Chiefs | The Joint Chiefs is a group of military advisors to the President. They have no operational authority or ability to command troops. The Secretary of Defense is the second in command of the United States military, after the president. They are the head of the Department of Defense. |
If the (US) police arrest someone who is unconscious, would the arrest automatically be invalid because they weren't read their Miranda rights? Why or why not? | No. It's a common misconception that you have to be read your Miranda rights at the time of arrest. This isn't true. You have to be advised of your rights before you are _interogated_ by police, not arrested. If you are not, anything you say in that interrogation may not be admissible in court. In this case, since you ... |
Why do our voices sound different on recordings then they do when we hear ourselves speak? | Than? Basically, when you talk, you are mostly hearing what you sound like when the sound travels through your body..composed of bone, fat and meat. When you listen to a recording, you are hearing what your voice sounds like when it is traveling through airWhen you hear yourself speak, most of what you hear is your voi... |
Why fogs from distance look very dense but when we are moving towards it we can see clearly to a certain extent? | When you're looking at things that are farther away, there's more fog to look through. Closer things don't have as much stuff in front of them to block your vision. |
If I don't eat breakfast, I don't even get hungry for a while, but if I do, I get hungry before 11. | During a fast, such as the one that most of us enter during our nights sleep, the liver is basically providing the brain with glucose, fuel. When you wake up, your hormones dont change until you eat something. If you dont eat, glucagon stays high and your liver continues fasting state metabolism. When you do eat, insul... |
Why do humans have eyebrows? If they served a purpose, what was it? | They shade your eyes from the sun, help reduce glare off of objects, aid in communication by being expressive when we speak, and help to keep sweat out of your eyes. |
Why is female toplessness considered nudity, when male toplessness is pretty much acceptable? | There is a documentary on reddit somewhere that shows a man undergoing a sex operation to become a woman. I think the video was hosted on youtube. The video shows the surgeon making the female breasts. At a apparently random point during the operation youtube censors the, now, female nipple. It's the same nipple! This ... |
Do you sweat underwater? | Yes, as long as your body is trying to shed heat it will sweat. You just won't notice because you are wet. |
How can Alphabet make Google's life easier | It's basically taking all of Google's current child companies and moving them up a level, alongside Google rather than under it. So the old management structure may have looked like this: _URL_0_ Which doesn't make much sense if you think about it. Why should a biotech company be managed by a parent company that is mai... |
Why did the endless cascading of windows (such as the 'not responding' window)on older operating systems occur? | Windows didn't cache a windows pixels when something is placed above it. It simply asked the message handler to render that area of the window when the area was returned to the window. When the message handler is unable to execute this it keeps the pixels that were last rendered. A message handler can fail to handle th... |
How do cicadas "count out" their 17 year cycles? | They're not hibernating for 17 years, they're actively living underground and just reach maturity in 17 years. |
Could a quantum supercomputer brute force 128 or 256 bit keys? | Quantum computers are fast because for certain kinds of computation, they can perform it with essentially infinite parallelism. In other words, instead of trying all 2^128 possible keys one at a time to brute force the correct key, a quantum computer could try all keys simultaneously. So current the current encryption ... |
What is a Half Life (not the game) | It's the time it takes for a radioactive sample to decay to half of its original amount. It's also sometimes used as the amount of time it takes for half of a certain drug or chemical to leave your body. |
Why haven't any car manufacturers made a hybrid or "earth-friendly" vehicles that are appealing when it comes to looks/design? | Have you looked into the [Tesla Model S]?What "looks cool" is a matter of personal preference. What looks cool to you, may not look cool to me. On that note, Tesla makes some very aesthetically pleasing electric cars.Several manufacturers are now making hybrid versions of previously non-hybrid cars, that use the same b... |
Why when looking out at the ocean from an airplane do the waves appear to not be moving at all, while other objects like cars are still in motion? | It's because your brain needs something relative to base the wave speed on. A car will look like it is moving relative to a road/landscape. Waves in an ocean have nothing for the brain to base the motion from, unlike waves on the shore. So unless there is a rock or something to break up the area and show motion, waves ... |
Why does it matter that the NSA has access to private information? | there are many reasons, but one is that technology has advanced to the point where they can collect and keep massive amounts of data indefinitely. They get to collect all this information on you throughout your life. It doesn't require much effort to store all of this information. You may say, fine. I'm an upstanding c... |
Why do humans form bonds with animals so easily? | we're social animals, forming bonds with members of our tribe is important to survival. those mechanisms aren't so strict that it only works for humans. |
Why are there things I want to do, but can't make myself do? | I guess it's a light form of procrastination: you're not actively resisting cleaning up, but subconsciously you're finding other things to do that would bring faster satisfaction: watch a movie, read a book, etc. To really get started on something you have to do, break it down into smallest steps, like in the case of c... |
Why are insects so annoyingly good at avoiding my swat attempts? | The species & offspring whose nervous systems didn't emphasize maneuverability and fast reflexes were swatted into extinction long ago. |
Please explain how it's possible to 'go dark'. So, if I wanted to, I couldn't be traceable? | In short, "going dark" refer to making yourself unavailable via traditional means of communication. You relinquish all electronics, internet, radios, so forth so that you can't be reached by text, Facebook or otherwise. In order to live completely "in the dark" like this, you 'd also have to give up using credit cards,... |
Why can't we make a painkiller that isn't addictive? | We don't really understand addiction, lots of recent research suggests that addiction is not just a physical issue. Thousand of soldiers in Vietnam were using heroin, but stopped, did not go through withdrawal, when they came home. Plenty of people get high doses of pain killers in the hospital yet have no issues. Lots... |
What would happen if all the bees were to extinct? How would that effect our food source? | Beekeeper here, this infact did happen in a region is china known for growing pears . All the blossoms must now be pollinated by hand. In short most fruits and veggies would disappear, many nuts. Many grasses used in Animal feed is similarly have trouble. There are a few fruits not pollinated by bees. The PawPaw tree i... |
What Did Aleister Crowley mean by "Do what Thou wilt" ? | Crowley believed that human beings each have an intrinsic purpose - a \'will\' - and that the pursuit of this purpose was the only constraint on action. When he says "Do what Thou wilt", he is saying that you need to act in accordance with your purpose. Note that it does *not* mean "do whatever you feel like", although... |
Why (and when) did mint become associated with holidays, mainly Christmas? | Mint is a hardy herb that can survive frost and even snow. I remember people keeping mint alive in Michigan winters just by clearing back the snow. I'm guessing this is connected to your answer.First time i here of this. Usually cinnamon is associated with Christmas. |
Why the MLB does not have a salary cap | Because the rich teams like to treat the rest of the league as their farm system, and the players like being showered in money. Since a salary cap has to be part of the union agreement, they work together to make sure that never happensIf a baseball team is run like a company, the company is in its right to pay its wor... |
At what point does a knife become a sword? | The transitions are a bit muddy and have shifted through history but a dagger is a double edged knife, a dirk is a dagger that is 6"-12" and a short sword is 1\'-2\' in length. Then you have numerous kinds of longer swords. But the answer to your question is 1\'No expert, but I would consider a blade to be a sword when... |
Why is "empire" spelled with an "E" when the latin root is "imperator" | There is no international authority on how words are said or spelled. Dictionary spellings and definitions are merely accepted conventions that evolved organically over time and often there is no hard and fast answer for why a word is spelled or pronounced the way it is. People just did it that way. As for why it happe... |
If I drive 5 miles going 40 mph vs. the same 5 miles going 80 mph, will one require more gas than the other? | The short answer is that at those speeds yes, air resistance increases and going 80 will take more fuel. If you stick your hand out of the car window when doing both of those speeds you will notice that the air pushes harder on your hand at 80mph. The car engine needs to output more power to hold the speed because the ... |
How much is a human actually worth? | Yes. Healthy, working organs go for a nice chunk of change on the black market. The black market thrives due to people needing an organ donation but not wanting to wait on a list for years and years, because not enough people donate organs. The extent of how much this happens is unknown. It does happen, but it's not li... |
Where did the Native American Indians that actually discovered our part of the world come from? | They were descendents from a group of humans that crossed from what is now Russia over to what is now Alaska. This happened 16k to 11k years ago. Eventually as the ice age ended sea levels rose leading to the land they crossed to end up under water. This meant the humans being able to populate the New World without int... |
when a sudden cold gust of wind robs me of my breath, what's actually happening? | The cold gust of wind is stimulating the [mammalian diving reflex]. This is a autonomic nervous system response present in all mammals that slows the heart rate and breathing rate when your face is submerged in cold water. But a blast of very cold air can have the same effect. |
It is recommended that you don't sit on a toilet for a long time but I sit in a chair all day at work, what's the difference? | While it is recommended that you don't sit down all day *at all*, a toilet seat is especially bad because your weight is concentrated on a relatively thin strip across your legs. This compresses the blood vessels and results in much worse blood flow compared to sitting in a normal chair.Because when you are on the toil... |
In the wild, animals see brutal murder all the time, so why are humans so easily affected by tramautic events such as murder or rape? | Humans are highly social. In fact, it's conjectured that our brains went on a path of more advanced development than other primates because this permitted better interpersonal communication, allowing for more complex relationships and language, and this gave us a reproductive advantage. The flipside of this is that whe... |
How do toilet bowls empty faster than the toilet tank can fill it? | Once the bowl outflow reaches critical siphon capacity, it creates a siphon that sucks the rest of the water outShort answer: the water is existing out a 3" hole and being filled with a .25" tube. |
How is the National Guard getting activated for the Virgin Islands? | Uh, the US Virgin Islands has its own National Guard unit. The National Guard that's being activated to serve in the US Virgin Islands is probably the US Virgin Islands' National Guard. Do you have an article that suggests otherwise? |
How can someone use bots to do things repeatedly on a website that would normally be limited to one action per user account, like voting in a poll? | Depends on the level of security implemented. If a site limits things to one action per session using php sessions or cookies to track this, it's not hard to clear cookies or reset a php session. If it's once per account, then the bot will attempt to create an account, perform the action, sign out, repeat. If things ar... |
Why is the legal age of consent for sex less than the legal age to watch pornography? | Laws usually don't have to make sense. It is what the politicians and the lobbyists can make the people think are concerns. |
Why is it that if I cook something in a deep fryer or oven, it gets crispy, but if I were to cook the same thing in a microwave, it gets mushy? | The crispy, burny flavor we all love so much is called a maillard reaction. The surface temperature of your food reaches a point where this begins to happen. Microwaves just superexcite the water molecules inside so you don't get the reaction. |
Why is AC current better at long distances than DC? | **AC power can easily be transformed to a very high voltage.** * By the equation P = U*I we see an increase in voltage must lead to a decrease in current for the same power . * With Ohms law I = U / R, we can calculate the power loss in a resistance as: P_loss = R / or P_loss = R * I². In both forms in the second state... |
Why is it possible for a donkey and a horse to mate if they are two different species? | The ability to produce a hybrid species is not all that rare in the natural world. However, their differing number of chromosomes do make it so that mules are generally sterile. Edit: While it's often stated that the difference between 'species' is the inability to interbreed, that's not really accurate."Species" is no... |
Why was the moon red? . | The atmosphere will scatter light of lower wavelengths , which means that those colors won't pass straight through the atmosphere very well.Red light passes through fine, however, so when the earth starts to cast a shadow on the moon, light must pass through the Earth's atmosphere and the light that makes it through th... |
Why do men experience nausea when their testicles are struck? | There's a cluster of nerves that gives feeling to the testes as well as the liver, pancreas, stomach, gallbladder, and colon. So, getting hit in the balls will give you gastrointestinal symptoms like stomach pain, nausea, and vomiting, through reflex stimulation of this nerve cluster. In other words, some pain impulses... |
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