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How come we can't just filter out the salt and stuff from the ocean and have huge sources of fresh water? | We can, it's called reverse osmosis. The problem is that it's very expensive to do that compared to how we get fresh water right now, so economically, it's not a viable option .But we actually do, for example in Malta all the water is purified with reverse osmosis from the sea, but it’s definitely not the best method: ... |
how surveyors know where they're at on a property and where that property begins and ends? What points of reference do they use and how do they know theyre accurate? | There are a few different ways to do this. In terms of elevations, typically they will get an elevation from a certified elevation marker placed by USGS and work their way towards the property they are measuring. If the exact elevation is not important, they will set the finished floor elevation as 'zero' and measure e... |
How did WW2 save the American economy? | Well firstly, many of our well established competitor's economies were devastated. Secondly, many nations during the conflict relied on American goods. We literally could not sell enough to the countries engaged in the conflict, hence the Lend-Lease Act.You have to be careful. A lot of idiots will propagate the terribl... |
how being a libertarian is different from being a republican. | Many of us can relate to Libertarian views, and if we are looking into getting away from the two party system, they should have a place, but it's all academic at this point, as the reality is a two party system. |
If we know the age & the rate of expansion of the Universe, why can't we calculate how big it actually is? | We sort of can calculate how big it is, by measuring the curvature of space. When we do, we've found that for all meaningful purposes, the universe is spatially flat. Parallel lines always stay parallel. This means that it doesn't curve around like a sphere or anything. This suggests that the universe is unbound - it g... |
How would it be decided who gains the proceeds of sale/owns the land rights to plots of land on other planets and moons? | Honestly I think it will go the same way our current landspace was originally divided up, through bloodshed and violence. In the absence of international agreements and zero prior ownership, it is Rousseau's situation of the deceitful savage. Who has the daring and ruthlessness claims property because property is only ... |
With how much the Earth has changed,would prehistoric creatures as we know them even be able to exist in today's environments,even in the best of conditions? | This is a tough ELI5, there's no straight answer it just depends on how many different factors you want to consider. Others have made the case for animal survival as far as Oxygen levels are concerned, but that's not the only thing that's changed. Climate change have changed the Earth's temperature and climate/weather ... |
engine liters and how they define the size of an engine | The liters amount is the sum of the displacement of all the cylinders in an engine. You can have lots of small cylinders, or fewer large cylinders. It's possible to have a high-displacement engine with a small number of cylinders. I think the most recent example was a 4.3? liter four-cylinder in a Toyota Land Cruiser o... |
How can Valve afford to reduce the prices of games on Steam so much during sales such as the Christmas sale and still make such a massive profit? | Valve makes a percentage on every game sold on their platform. That's why people advocate buying the games through the actual company and transfer the game to steam after if available. That way, the developer gets most of the money versus valve.I have a game on steam so I can answer this. They don’t lower prices. They ... |
Why do things cooked in oil taste good but drinking cooking oil does not? | In deep frying, the oil is there to cook the food properly , not for taste. Ideally, if you were able to extract every last bit of oil from a fried food it'd still taste quite great. There are of course, other dishes where oil/fats are meant to taste good, but this is not usually true for frying/vegetable oil.Why do we... |
Why smashing atoms together (fusion) releases a ton of energy, but splitting them apart (fission) does too. | Others have said the same thing but to make it real short, you only release energy if the product is closer to iron than what you start off with . Light elements need to fuse to get closer to iron, heavy ones need to split, but either way they release energy. Likewise, moving away from iron absorbs energy instead of re... |
Why we need to spend so much money on tv cable when we already see ads on tv? | Up through the early 80s one of the features of cable was that it was ad free or significantly reduced ads. It didn't last long though. _URL_0_ |
Why does the flesh of an apple go brown fairly quick out in the open? | Nutrition student who just did fruit browning in food science: It's the activation of enzymes by exposure to the oxygen in the air! These enzymes turn phenols in the fruit into things called quinones. These quinones turn into melanin, a brown pigment. Ways you can reduce this product: Cook the fruit all the way through... |
Why do people answer with questions in Jeopardy? | Because those are the rules of the game. Jeopardy's gimmick is that the contestants are given answers and must come up with the question. |
How did mammals survive mass extinction 65 million years ago? | Mass extinction events tend to be poor for large creatures, but not small ones, as larger creatures tend to be more specialized into specific ecological niches, and also require much larger nutrient pools to survive. The largest mammals at the time were, I believe, about the size of a rat, and scavengers, which have a ... |
How do we induce a coma and how exactly does it help the patient? | My father was in an induced coma due to a brain injury caused by infection. It was hard to safely awaken him and I remember there were several attempts . Why is it difficult and what problems/signs of problems might have been encountered? I tried to ask the nurses/doctors but this happened in Spain and my Spanish vocab... |
Why do people go pale when they feel tired, ill, or shocked? How can it happen so quickly? | I believe it's the body's immune response to relocate blood to your vital organs in the event of trauma or shock, that would induce the 'pale' look. Blood circulates through the entire body in only a matter of seconds, at about 3-4 mph, so that's why it happens so quickly.ELI5 Why do people go pale & white after gettin... |
What determines a match for Organ Donor Transplant Surgery | It has to do with blood type first and foremost. However there is no guarantee that a body will accept a foreign organ. I'm sure someone else will be able to give a better answer tho.It’d be blood type and the quality of the organ, the blood type matters because if you receive a differing blood type than yours, your bo... |
Why does it seem like more people get colds/flu during the colder months of the year than warmer months of the year? | TL, DR: The body expends more energy on keeping warm and has less energy to fight off viruses. Longer version: It has less to do with cold months than it does with variance in temperature. That's why autumn/fall is usually the most likely time to catch a cold. The reason for this is that the difference in temperature c... |
If Voyager 1 is traveling at 60,000Km/h then how is it not destroyed by a collision with even a tiny meteoroid ? | space is really really really empty. There unfortunately isn't really that much more of an explanation than that. The chances of it hitting something are astronomically small.What matters is voyager's speed relative to the tiny meteoroid, not earth. Even if it was just orbiting the planet, it would likely encounter spa... |
If the volume of blood in our body, as well as the space that blood has to occupy are both (fairly) unchanging, how can our blood pressure change? | I'm no expert, but physics would tell me that an increased heart rate would increase pressure in the system and our blood vessels have the ability to expand and contract. That is a function of drugs known as vasodilators and vasoconstrictors. |
How do investigators figure out the cause of a fire, including the massive California wild fire? | The PUC is investigating possible Edison and/or PGE power line/substation outages minutes before fires broke out in the same areas. These may be the cause of the wildfires but it's going to be difficult to identify the exact cause.I heard it was discovered that PGE May have had something to do with the fires because of... |
Don't Open Source Softwares Basically Opens its Gate for Hackers? | Yes, in the sense that an error in the code can be found by the hacker and exploited. But this is considered counterbalanced by the fact that people with more benign intentions can also find the error and report it to the developers, resulting in faster fixes and tighter coding overall. Closed-source is not really prot... |
why do companies go Public? | The main reason for an Initial Public Offering is to make money, either for the company as a whole by selling stock that didn't exist prior, or for the early investors in the business who are able to transform their share of the company into liquid money and exit.Because they can make a large immediate amount of cash t... |
Why do millennials say that they can't retire? | In the UK at least, the state pension age has been steadily increasing, while life expectancy hasn't been rising, and it's easy to see that by the time a now-20 person retires the age of retirement will be close to their date of death. |
Who funds non-profit organisations and how do they stay afloat? | Non-Profits are usually funded by donations at first. They are required by law to spend a certain amount of their revenue every year towards their stated purpose. However, that doesn't mean they are purely donation based. Most of the non-profits with professional staff are usually funding themselves off of a foundation... |
How does a coin flip have a 50/50 chance of landing heads/tails, but at the same time each consecutive flip NOT have an impact on each other. | There is absolutely a difference between probability in practice and on paper and you could absolutely flip a coin a million times in a row and get heads every single time. It's staggeringly unlikely, but the reason for that unlikeliness isn't because of the prior flips. Just that the likelihood of tails is also 50%. P... |
How are squatters able to stay on peoples properties without being arrested? | In general if they are caught they can't and are arrested for trespassing. But if they can stay there long enough without the owner noticing and do things like make repairs or improvements, and a few other legal conditions they get what are known as squatter rights. Sometimes this functions like a renter, sometimes the... |
Why does it seem like there’s always an election issue in Florida? | Florida is **big enough to care about.** In a presidential race, it gets 29 electoral votes; North Dakota gets 3. If North Dakota were close, no one would care. Florida is **more or less balanced** between Democrats and Republicans. There's around the same number of voters in each party in Florida. This makes it a clos... |
Why is it so hard to make good counterfeit currency if there’s obviously a method of making real currency? | It's hard to make counterfeit currency *profitably* Countries have implemented anticounterfeiting measures in their currency to make it harder to fake, this makes it harder for the country to make but they're doing it on a large enough scale it's fine Fake money is only useful if you can print money worth more than you... |
How can you pull on a rope in a pulley system and only make the load move a fraction of the distance you pulled? | I can't draw unfortunately. But try to visualize this. When a 10 foot rope goes directly from you to an object you have 1 10 foot rope, when a 10 foot rope goes to an object through 1 pulley you have 2 5 foot ropes because it has to go there and back. If you add a second pulley then it is 3 3.33 foot ropes and so on, t... |
In how many dimensions is a line drawn on a piece of paper with a pencil? | If the line has only length, it's 1 dimensional. If it has length and width, it's 2 dimensional. If it has length and width, and depth, it's 3 dimensional. A pencil line does have a little width, and, I suppose, since the graphite on the paper sticks up a little bit, it has depth, too. About the only 1 dimensional thin... |
Why must the economy continue growing? | In the simplest terms: everything in 'the economy' can be traced back to digging something out of the ground. This is a very basic concept in the economics of 'value creation'. Minerals, oil, food, natural resources, plastics - you can keep going on forever. And then there's the 'service economy' which, as it sounds, i... |
Why aren't there standardized tire sizes? | because you need to market segment and because of aesthetics and customer preferences. practically speaking, high end tires and low end tires more or less cost about the same to manufacture. maybe there's a small difference in the manu cost, but that manu cost translates to a high difference in retail price for the con... |
What kind of cells are generated in scars? Why are some different than its' original cells | Some organs can regenrate themselves, others can't. Those who can't are replaced by scar tissue, which is basically just a filler with only a small amount of the functions the original tissue had. |
How can I distinguish a $100 painting from a $90 million painting? | You can't. If person A wants to pay person B a large amount of money for some illegal activity, of course nobody wants to say *why* they're really sending the money. And it would raise some eyebrows if some person just sends some random other person $90 million or whatever. But if they buy a painting from them for $90 ... |
Considering the Formula 1 rules, and car specifications, what are the differences between cars from different teams, that makes then faster or slower than each other ? | lets put it this way. i want you to bake a cake but you can only use sugar, water, flour, eggs, milk, etc. now there are a million different ways to make a cake, some better than others. even though the f1 specs spell out certain things. there are still a million different design considerations that will affect the per... |
Why Macs don't get viruses and what makes PCs so prone to them? | Macs can get virus just like pc but since the pc was vastly used in offices and businesses, there's more profit to be made by exploiting the masses than it was to waste time on writing a program that was mainly used for photo and video editing. I actually remember reading a story a few years ago about this hacking conv... |
What's the purpose of nutritional labels showing that there's 0% of a certain vitamin or mineral? | What's really annoying is that they're allowed to round down, like down to zero when there's little in a serving |
What stops rain from freezing while in the clouds into one city size block of ice and crushing us all? | The cloud is water vapor. The reason it rains is because the vapor becomes heavy enough to fall down, usually because it gets colder. If it's cold enough they'll crystallize and stick and you get snow. In order for it to become one block of ice the temperature should instantly go below the freezing point for all the wa... |
How is anime created? | There are many kinds of animations. The old kind is drawing frame by frame. About 12 frames per second worth of drawing - paper & pencil work. Then shot photos of them and assemble on a film roll. Then rerecord it with sound. The more modern kind is to use animation software dedicated for this. Not Photoshop . There's ... |
How can people tell when someone is staring at them? | To follow up on thetreece's answer, you also never notice the number of times people are staring at you and you don't notice. So you may only notice people are staring at you 1% of the time, but you're utterly unaware of the other 99. |
How do business owners pay themselves when business is bad? | so depends on how the business is structured and what kind of cash reserves you have. If you're a rich old guy and a sole proprietor; you can just pay yourself the profits of the business assuming you make money. If you have a few million dollars in the bank, you can afford to take a loss month after month, especially ... |
Why is soccer so popular as a youth sport, but not as popular among older age groups? | Unlike baseball and football, soccer demands almost no equipment investment. Also, most kids don't have the coordination/strength to be successful at football, baseball, or basketball without significant time investment. |
What exactly are the potential consequences of spanking that researchers/pediatricians are warning us about? Why is getting spanked even once considered too much, and how does it affect development? | On a psychological-social view: Because it breaks the most basic trust a child should have on their parents. Imagine this: the parents are people that brought you to this world, that raised you, showed you how everything worked, taught you, and promised to protect you. At the first moment a child gets beaten, that bond... |
Why are men so disinterested in sex once they've ejaculated? | Welp this is kind of gross. But I've read that the penis has adapted to be good at displacing the semen of other sexual partners the woman may have had recently. This way your sperm has a greater chance of fertilizing the egg compared to the other partner's. If you keep going after ejaculating you'll be displacing your... |
Why a HDMI cable makes a LCD monitor shuts down when neons are turning on or off near them? | I'm no expert but I understand HDMI cables can carry power signals to tell the equipment to turn on/off. Example, my Xbox One turns MY Denon amp on/off with the Xbox via the HDMI. It's probably picking up interference signals from the neons |
How does plane overbooking occur? Why don’t the airlines stop selling tickets once the plane is full? | Airlines overbook on purpose. From observation and repetition airlines have figured out that on average a small percentage of people on every flight will miss their flight for some reason or another. So to get as much money as possible per flight they will overbook by that percentage and hope that people don't show up.... |
Where do all the wasps and bees go, when it gets cold, do they hibernate? | The yellow jackets fly into my wood pile, find a piece, and stay dormant until I bring them in. Then they fly around and panic the family. If I'm lucky I'll toss the log into the fire before then and they'll burn. |
The Difference Between a Dependent Variable and an Independent Variable | experimental variable", output variable, criterion,or measured variable. The Response Variable is some quantity that is difficult to control directly, but which is influenced in some way by at least one, if not several Control Variables. The conyrol variables are quantities which ate easily controlled and influence the... |
Why are radians the unit of choice for angles? | The real reason is that we want the sin and cos functions to behave nicely, and they only do this if x is interpreted as a number of degrees. For example, Euler's famous identity e^ix = cos + i *sin only holds for this choice of angle measurement. Additionally, sin has the nice property that its derivative is cos and c... |
Why is it a good idea for the President of the United States to have the power to pardon someone? | In theory it's a way for the president to do a couple things 1) it gives a neat way to fix problems where in the laws have conspired to fuck somebody over unfairly. 2) It serves as a check on the judiciary system. So that if judges are trying to play partisan games the president can check that. This works great when th... |
The concept of the "pyramid schemes" I keep hearing about? | it's pretty much a scam for everyone who isn't at the top - see r/antiMLM for examples of people who don't know they're being scammed. People at the bottom purchase products from the company, and try to sell them to other people. Since they had to buy the product, if they don't sell it, they're losing money to the comp... |
How do elephants and other heavy animals joints don't go bad when a lot of human joints have already gone bad under a lot lighter weight? | I volunteer at a horse rescue, and there are plenty of horses with arthritis, lameness, whatever you name it. Even the ones who aren't at the rescue. |
Why are there still college football games where top teams play unknown colleges? | College football schedules are made 6+ years in advance sometimes the 'cupcake' teams won their leagues that year and were actually good teams but 6-8 years later you have a completely different situation Until they reduce the schedule making to within, I think, 4 years .. you would have more competitive games |
Where does a queen bee come from? How and with whom are they made since there is no king bee? | There is no king bee because a new queen only has to mate once to become fertile for life. Male bees in a hive are called *drones* and serve no purpose except to join reproductive swarms in search of new queens that have just emerged. The males are actually born from haploid, unfertilized eggs. A queen bee is born from... |
How can we open our mouth under water without water filling the lungs and stomach? | There's a flap called the epiglottis that guards the opening to the wind pipe and the oesophagus.when you're in water it blocks the trachea |
What are ‘Equal Per Capita Emissions Rights’? | It's a Socialist pollution management policy. Every person gets a certain quota of emissions, and gets fined if they exceed it. It's usually combined with an emissions marketplace, so that rich people can pay to use the emissions rights of other people, adding a functional flavor to wealth redistribution.We are getting... |
Does dark skin absorb more heat? | > Is this true? Yes. But it should be noted that the amount of heat absorbed by the skin isn't the cause of a sunburn, despite the suggestive name. Instead the issue is blocking UV light from penetrating into the cells and causing damage. Even though blocking that UV involves converting it to heat our bodies are well e... |
Why do people use “Baby Talk” voices when talking to babies? | I'm guessing because babies are starting to learn the language and it helps to expose them to as much as possible in the ways that make it easiest to learn. So you say LOTS of things VERY clearly and simply with VERY clear emphasis and you show off the grammar LOTS AND LOTS with tag questions and answers, yes you do, d... |
. Vodka has no carbs, fat, or protein, and yet has 80 calories. So what the fuck are the calories? Can they be used for energy? | Ethanol is the 4th macro nutrient, besides carbs, fats, and proteins. It's not usually included because we don't need it and it's so rare in nature. |
How do people serve multiple life sentences in prison? | They're in prison until they die. If one of their sentences is commuted or if they're pardoned or if they're ~~found not-guilty~~ exonerated, then they still might have multiple life sentences to keep them in jail forever.Depending on the state, a life sentence is a certain amount of time . If that is the case, multipl... |
Which type of sugar, Brown, Powdered, or White, would make yeast reproduce faster and why? | The answer is: it depends. Not the answer you're looking for, but correct. Let me explain more. This information comes mostly from the home brewing knowledge base. Let's start with the most basic information. Yeast does not grow in a significant way. Yeast is a single celled organism. What we think of as yeast growth i... |
How come spinning around (both quickly and slowly) makes you dizzy? | In your inner ears there are 3 canals that contain hair and fluid. Your hairs sense how they are moving in relation to the fluid and send signals back to the brain to tell you that movement has occurred. When you spin around really fast, at first the hairs are moving as fast as you are spinning and the liquid isn't mov... |
How is it that a USB cable/port can not only be used to transfer data between devices, but can also be used to charge a device? | Originally the USB included a bunch of connections to transfer data as well as some pins to transfer a small amount of power. This was not meant to charge anything, it was just enough power to run the device, so your keyboard or mouse didn't need an extra power cable to function. People making devices found more and mo... |
Kitchen tips claim you can mix baking soda and vinegar for cleaning, but don't you just get water and salt by mixing them? | Basically bs + v for cleaning is, well, BS. It's no better than using any slightly alkaline solution for cleaning . This may be perceived as an unpopular opinion, but if you do your own independent research you'll discover there is zero science to back up using this to clean. |
How do [win X] competitions where the prize is a lifetime supply of the product manage to work? | one per day" or "one per week". That keeps the costs from getting too prohibitive. The winner could go into a McDonald's, get an ice cream, and had to come back later, and couldn't just sit in the lobby from open to close and demand a thousand ice cream cones. As for why companies do this, it's great advertising. Even ... |
Why are all the planets in the solar system on one two dimensional plane? | The gas and dust disks around young stars form a flat plane like Saturn's rings. The eight planets formed from this structure. Pluto formed further out and does whatever it wants. Those disks form because the most stable orbit close to the star is the one right in line with the young star's rotation. Once that stable d... |
How do babies know that when they cry they'd attract attention and probably get wat they want? | It's their only means of communicating as they can not form words yet. When they have a need, they cry to express to their parents there is something to be taken care of. |
How does country get richer through protectionism? | If you're a relatively poor country, you like free trade, because you can use the cheapness of everything in your country as a competitive advantage. If you're a developed country, free trade turns out to be a race to the bottom that destroys your middle class. Because if your wages are above what it would cost to get ... |
How exactly does going vegetarian/vegan help the environment? | I don't know about the rest of the world, but supposedly in Denmark we spend 80% of our crops feeding livestock. This is all land that could be used to either further feed the population through vegan means, or replant fields into forests to increase CO2 conversion. Secondly, we also save the transport of animal feed t... |
Why is Russia not so rich? | 1) Russia has a fairly low population density. So for its land size, the population is low.2) throughout the centuries, much of Russia's wealth has been based on selling off natural resources . These days it's not a very profitable trade, although of course it still brings in a lot of money.3) most of today's Russia's ... |
What would happen to a dead body floating in space? | You'd fall apart. Radiation and the heat of direct sunlight with massive amounts of uv-light would absolutely destroy you and roast you alive. |
With technology generally moving pretty fast, why aren't [rechargable] batteries improving accordingly? Or are they and we're still pushing their limits? | Batteries are much better today than ten years ago, but you're always pushing the boundaries of what is chemically possible. Besides that, batteries as opposed to most technologies weren't improved much before the 1980s - the lead-acid batteries we use in cars today are basically the same as when they were invented in ... |
How does electrochromic glass work? | Smart glass is a whole range of glass products that can switch between being more or less opaque. There are a number of different technologies that can be used to make smart glass. Electrochromism is one of the technologies. In simple terms, electrochromic glass has an electrochromic material embedded into the sheet of... |
Singing in a tonal language | Even though the lyrics may be sung in tones that are not necessarily same as those being spoken, so as to accommodate or fit the tune of the song, the native or experienced speakers of tonal languages such as Chinese would still be able to understand the lyrics of a song. This is because the phrases in the lyrics are o... |
Why do people twitch in their sleep? Not like the ones that you feel like you’re falling and wake up, but like small twitches | While dreaming your brain actually fully active doing what it normally does, but there's a part of the brain stem that blocks the actions getting to your muscles. It isn't perfect, so sometimes you twitch. You can see this with cats and dogs too. IIRC your eyes are not suppressed, hence they move, a lot. Sometimes you ... |
Why do languages sound the way they are today and how did they become so aurally distinct? (eg. German vs French, Japanese vs Hindi) | the main reason they become aurally distinct is usually down to localization of dialects as example You and your village encounter a strange new creatureit gets named Elephant then the sounds it makes gets named and thus you have more words created then you have slang terms added to this mix so languages can change 'ra... |
how does a gif or a jpeg lose pixels as it gets shared more and more? When you copy it doesn’t it copy the whole file? | If you copy the entire file as is then it doesn't lose anything. It does lose quality if you open the image and then save it again. For example if you take a screenshot of the image instead of saving the original image file, or if you open the image in an image editor to add a title and then save the edited image. |
How does a phone know how much energy is left in the battery? | As a battery loses charge, it's output goes down slightly, and a phone is programmed to weigh it's current consumption rate compared to what the battery is putting out. |
How do electric eels work? | An electric eel has three pairs of organs that produce electricity , and they take up four fifths of it's body. They are made of lined up electrocytes. The electrocytes work like a muscle and allows ions to flow through them and stack up a potential difference . It's capable of sending out a low discharge and a high di... |
Could the wildfires in California have been prevented by raking? | The fires are actually necessary, there's some species of pine tree with pinecones that have to be burned in order to open and spread seeds. They also clear out the undergrowth and fertilize the soil. So yes, raking up all the dead leaves would help prevent these fires, but you'd be preventing a vital part of the ecosy... |
How do electronics manufacturers make chips as small as a few nanometers wide when we can hardly even see things much bigger than that? | They use custom-made machines, of course. But more specifically, they don't build each component on the chip separately — they actually *print* the electronics onto the chip, slightly similar to how a photocopier prints toner onto paper.photo lithography, we design it quite large then it is printed using lenses to focu... |
What's the point of a smart phone saying it is water resistant up to 30 minutes under water, but the warranty does not cover water damage? | Water resistant is not water proof, so water damage can still occur. It's a protective feature but not a failsafe.It wouldn’t cover water damage unless the water damage was a result of a manufacturing defect making it not water resistant up to 30 ft. So if you were texting while I’m the bath and your phone shorted out,... |
How does liquid turn into ice instantly? | Cool, this usually doesn't happen unless you are trying. This is called *supercooling*. It is what happens when a liquid is colder than freezing, but has not crystallized. The molecules have not snapped into the proper structure to form ice. When it is disturbed, the liquid can form the ice structure witch spreads out ... |
if a region wants to become independent, why do countries resist so strongly? | Partly it's economic: you don't want to give up valuable resources, population and land if you don't have to. Why intentionally make yourself smaller, poorer, and weaker? Partly it is strategic: what if this area is in a very important location in terms of defence? Or what if it forms a close alliance with a rival/enem... |
How do deep sea fish/creatures deal with the immense pressure at great depths | The version I remember is that their anatomy is more permeable. Your question is how their bodies can survive the pressure? This theory says that there's enough water in their system to keep the pressure neutral. Alternatively, raised blood pressure helps among things. |
How do Wifi bands work? Why are mine so inconsistent? | Sounds like you're either on an overloaded node or you're too far from your router. Maybe try wiring the connection.And 5ghz is going to be faster, but it also has a shorter range. 2.4 has the wider range but also a more restricted speed. Edit: Did want to add that I have fiber optic, very solid internet, and even it w... |
Is it possible to get hearing loss from sounds which are outside the range of human hearing? | There was one time when diplomats in Cuba reported hearing loss and other symptoms due to sounds that were normally beyond what ears could hear. Upon further investigation, it's speculated that they were sickened by multiple listening devices in their hotel rooms. [This article from the Miami Herald] has more informati... |
Why can't countries like the US and Canada use their own oil supply? | The Cold War was contested on multiple fronts: Actual conflict in Vietnam, The Arms Race, The Space Race, Spy vs Spy, Cultural War but arguably most importantly on an Economic front. Central to the economic war is foreign aid and control by the US of world trade. Foreign aid is basically bribery of US friendly factions... |
Why is abortion very taboo in certain countries despite the economic and health benefits? | Simply put: people disagree on when a conceived child becomes a 'life' and therefore, at which point having an abortion can be considered immoral because it kills somebody. It does tend to follow religious lines, but that doesn't make it solely a religious issue. If you believe - regardless of religion - that as soon a... |
What’s actually happening to your throat when you lose your voice? How does this happen? | I'm a bit late to the game here, but it's worth noting that it's not just the irritation and swelling of the vocal folds that causes laryngitis. When the throat is in pain , the intrinsic muscles that adduct/abduct the vocal folds contract and lose their range of motion. It's a natural reaction, the same way your back ... |
If 98.6 degrees is the optimal temperature for our bodies, then why is it not the optimal outside temperature for human life? | Basically, it's because the human body is alive and creating heat by merely doing so. Even while we're sitting still, involuntary muscles like your heart are still moving, still expending energy, and as we become more active, we require more energy. Even the act of eating and digesting our food expends energy, and on t... |
A plastic bottle of Tropicana orange juice says 8oz = 100+% vitamin C. A 14oz carton says 14oz = 80% vitamin c. | The carton on the left isn't straight orange juice, based on the ingredient list . Other fruits/ingredients aren't as high in vitamin C as oranges", 'The vitamin C from juices is nearly always added in as an ingredient. The natural vitamins must degrade from the processing and so they add ascorbic acid in to replace. T... |
How does blue light affect our sleep? | The blue light emitted from device screens will trick your brain to think it's daytime. As a result, your brain tries to stay awake, which makes it difficult to fall asleep", 'Blue light has more “energy” than red lights. Imagine a dark room where film is developed. The lighting inside is red because it’s easier on the... |
Why is the switch that controls the rear defroster almost universally on a timer rather than an on/off switch? | Heating tempered glass too hot while surrounded by such cold might cause an imbalance in the forces of compression and tension within the glass. Tempered glass is strong until it isn't, and then it just explodes practically. |
How big are electric car batteries? | They are big and hazardous to handle, but automated swapping has been demonstrated. The problem is that you don't know whether you're getting a battery which is as good as the one you trade in. At upwards of $40,000 per pack, you don't want to inherit a lemon. The economics only works if the battery is leased or covere... |
Why is the US so socially conservative compares to most other Western democracies? | Might as well add geographical issues, we are large and border by two oceans so the population doesn't have any easy way to see alternatives in other countries. Likely why cities are more liberal than rural areas, you don't know what you don't know. |
Why does depression make it so hard to get out of bed, clean my room, make good meals, etc.? | My experience was that I felt so worthless that I didn't deserve to feel better. Feeling like making any effort is pointless. If you want to learn more about depression there is a great book called Lost Connections by Johan Hari. |
why is the gravity on earth and the moon not proportionate? | Gravity is propositional to distance too. The moon is smaller so you're a lot closer to all parts of it than is the case with how close you are to all parts of the mass of the earth |
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