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Why does it feel super weird to poke the belly button? | After college I moved to a new city to start a job - was living on the floor of a friend's place. I had this weird pain in my abdomen that had been there for a couple weeks - I figured it was the result of too much road trip food. Well, one morning in the shower my bellybutton blew out what looked like a gallon of bloo... |
How can living organisms be alive if they are composed of non living atoms? | To be classed as alive, there are generally 7 things that something should be able to do as a species. The 7 requirements are: Move Respiration Sense Grow Reproduce Excrete waste Nutrition or feeding of some description Each species that is alive has its own way of doing this through a series of chemical reactions and ... |
Why can't SPAM emails be completely identified and then simply prevented from reaching a user, instead of being routed to a junk folder? | Any test will have a certain number of false positives, meaning you incorrectly identify it as spam when it's legitimate. And some false negatives, meaning some spam gets missed. Could you just delete anything identified as junk? Sure, some email services let you do that. If they delete a legitimate email like a job of... |
does a television set displaying an all black screen absorb more light from other sources than a television screen displaying an all white screen? | No, the absorbsion of light does not change, as well as the reflection does not change. What does change is the light it outputs. It may look like your tv reflects more light when it displays blacks, but that's just because it then doesn't output as much light itself. When the tv shows something white it outputs a lot ... |
why wont disks from one video game console work on another video game console? | The disks contain instructions for the specific console. The different consoles don't know how to do exactly the same things using exactly the same instructions. |
Why is dust so omnipresent and no matter how frequently we clean an area, it still comes back? | Stuff falls off of you constantly you just can't see it, such as little bits of dead skin and hair. A small portion of dust is even coming down from space!", 'Just wanted to refer you to wikipedia's page about "cleanroom". It's a room that needs to be VERY clean, and uses air filtering systems and other methods to avoi... |
Why can’t allergies be cured, or at least permanently suppressed? | The allergic reaction can be reduced through gamma globulin injections over several years. It's expensive. There has been quite a bit of success in eliminating children's peanut allergy through exposure to microdoses. |
How do removable storage devices like usb retains the data stored in them even when it is not connected to a computer? I read that flip-flops require constant current to retain data stored in them. | Great minds think alike. Yarr! Yer not alone in askin', and kind strangers have explained: 1. [ELI5: How can flash memory retain its data without power? Is it possible for it to lose data over extended period of time? ] ^1. [ELI5: How do flash drives keep data stored when they have no power ] ^1. [ELI5: What happens in... |
Why do cars make a ticking sound when they’re cooling down from driving? | Thermal expansion, the metal is moving and making noise. I once lived in a place that had an older natural gas furnace and that's how you could tell it was heating up was the sudden high amount of creaking, followed by some slow creaking during the cool down. The car parts also make the noise while heating up, It's jus... |
If you brush your teeth at night and don't eat anything until morning, what are you really cleaning when you brush in the morning before eating breakfast? | When you brush your teeth you don't kill everything. So brushing in the morning kills the colonies that have rebuilt themselves overnight. |
Do doctors get sick more often because of exposure to germs, or do they get sick less often because that exposure leads to a strong immune system? | I'm in healthcare also. I also rarely get sick I attribute it to the aforementioned PPE layers and ridiculous amount of hand washing/sanitizer use When I'm home on the weekends I harp on my husband so much about his hand washing habits. He also gets sick more often.You get hella sick your first year then immune. Well. ... |
why does a radio start at 87.7 and end at 107.9? | So, those numbers are frequencies you can tune the radio to receive, in megahertz. Ok. Well, in America, the FCC has decided that 87.8 MHz and 108.0 MHz define the lower and upper limits of the FM band, meaning that any FM radio station that wants a license to broadcast has to transmit on on one of those frequencies. T... |
Why does a foot massage feel better when someone else does it than when you do it yourself? | If somebody is willing enough to touch your nasty ass feet, they are probably doing it out of love. You, however, seek vengence for the pain caused by the unforgivable bastards. No love there from yourself. Maybe that's why. |
Are all wild animals helpless to fleas, ticks, and parasites their whole lives? | Not much defence against biters, but all animals have entire immune systems with all sorts of tricks to help eliminate internal parasites! Eating them whole, punching holes in them, frying them in corrosive chemicals, or even walling them off to lay siege. Allergies come from an arm of leukocytes who are supposed to de... |
Why animals love it when you caress their neck ? | They love it because they trust you, if they wouldn't they would hate it, even if it was gentle. The neck is a vital body part; thus very sensitive, but pretty much unprotected and yet hard to reach or see for most Animals. Having somebody you trust caress, protect or clean this area is as close as you'll get to doing ... |
Why does Uranus have a 1 hr longer day, but spin faster than Neptune. | Siderial rotation period" and "Equatorial rotation velocity". Those always fit the formula: radius * 2pi = period * velocity', "The equatorial diameter of Uranus is larger than that of Jupiter by about 2,000km. It might appear faster, but it still takes longer for a point on Uranus' equator to a make a full rotation, b... |
If under-/un-cooked meat is so potentially dangerous, why are tartare and carpaccio so widely consumed, presumably safely? | There's always *some* risk when eating any raw or undercooked meat, but certain meats are *usually* safe to eat raw if they're fresh and prepared in a clean kitchen because they're taken from parts of the animal's body that, if cared for properly, don't have bacteria or parasites. Certain parts of cows and most parts o... |
How did old video games fit into such small spaces on cartridges? | It's all about detail of the game and what's needed to be stored. Super Mario only had like 5 colors or something rediculous and Ocarina of time looks like garbage compared to modern games. The more detail you give a character and environment, the more it takes to process those details and storage to house them. Link i... |
How come deep sea creatures don't live closer to the surface where there's less pressure? | Because that's where they evolved to live. They can't survive the lower pressure closer to the surface any more than organisms that evolved in shallow waters can survive the immense pressures of extreme depths.Some creatures prefer to live near the bottom because all the food eventually falls down there. The imperative... |
Why does milk and other food go bad if left out? | Because it's food. Not just food for us, but food for insects, bacteria, and fungi. Leave food out where life can get at it will lead to something eating it. |
Why would checking your credit affect your credit? | That's an outdated thing. Checking your score via the three options you have a year don't affect anything. In years past, that wasn't a thing and you had to pull a regular credit report on yourself. It didn't look any different to creditors than anyone else checking it. More hits on your credit report is indicative of ... |
Why can’t sound engineers create a consistent volume level throughout an entire movie or TV show, it’s either too quiet or way too fucking loud at different times? | 1) They mix for a listening environment that you probably aren't experiencing. 2) They mix to intentionally have intimate moments and dynamic moments for the sake of immersion in the show/movie 3) Converting from a sound mix made for a giant theater with 30 speakers down to a 2-speaker presentation, or even a 5.1 prese... |
Why does fair skin help people in environments with low sun absorb Vitamen D when the color white reflects light while the color black absorbs light? Does skin work differently? | Vitamin D isn't absorbed from the sun, it is made in the skin using sunlight to help the production. The darkness in skin is because of a pigment called melanin, which acts like a shield to prevent harm from too much UV radiation. This is why darker skin tends to be found in hotter places. There is much more sun, so bl... |
The rate at which muscles lose strength and size after halting a consistent exercise program? | You will start losing muscle size after about 2 weeks of inactivity due to the decrease of glycogen. Strength loss happens after about 3-4 weeks but it's easy to get back on track due to muscle memory. |
why is there flu shot so important? So many people that get them every year still end up getting the flu, why? | Great question! The flu is caused by influenza virus but one thing people fail to notice is that there are different types of influenza virus circulating at any one time. Each year, scientists predict which type of flu virus will be predominant for the next flu season and the vaccine made will be used to combat that ma... |
What's the difference between 32 and 64bit computer systems, and why aren't there, say 128bit systems. | So you, a very popular 5 year old, want to write all your 2^32 +1 friends a letter - oh dang 5 year olds today have no clue what a letter is! Anyways, you assign each of them a number. If you were to count a 32-bit system, with native integer types, you would find that you only have no friends and be sad. Because the c... |
If the equator is hottest during the day because it's the closest to the sun, shouldn't it be the coldest during the night when it's farthest from the sun? | The hot and cold has nothing to do with being near and far from the sun. The sun is so far away that minor difference don't matter. What matters is the amount of sunshine you get, not just in terms of duration of the day, but also in terms of power. The closer a surface is to being perpendicular to a light source the m... |
What is Triple point and how does it occur? | Nobody is directly answering this question. The Triple Point is where the solid, liquid and gas phases can all be in equilibrium at the same temperature and pressure. It's not obvious that this can happen. Normally we think of solids melting into the liquid phase before they boil into the gas phase and vice-versa . So,... |
Why does really old video footage (for example WWII footage) seem to have faster playback than normal? | Old motion picture film, especially early stuff like WWI era, had to have each frame exposed one at a time. Basically the camera would take a photo, have the film advanced a frame, and take another, rinse repeat for the duration. However back then they also didn't have nice little cheap electric motors like we have now... |
why does metal always feel cold even if the room is warm? | Your sense of temperature is linked in part to how fast heat is transferred to or from you to another object. A piece of metal is a fairly efficient conductor of heat. If it is colder than you , it will pull heat rapidly from your fingers. A piece of wood is not that great. It will pull heat slowly. As a result, even t... |
Humans suffer from muscle atrophy when they don't use muscles for extended periods of time. How come bears can hibernate for months and be just fine? | They don't literally sleep for months at a time, they wake up 3/4 times a week and wonder out of their cave. |
Why is it seen as a much more serious crime to kill a police officer as opposed to just a regular civilian? | It's because they are violent agents of the state employed to extort and imprison any citizen not doing what the government wants. Therefore those in power see a cop's life as more valuble than your own. Shit, they even treat a police dog's life as more valuable than a citizen's. |
If the flu is rapidly changing, how can scientists certainly identify the flu? | Basically the same way vets know a dog is still a dog and not a cow, though the virus changes it does so within certain limits and those limits define what flu is other viruses are substantially different to be fairly clear that they aren't flu. |
Why does Mitch McConnell have so much power? | Mitch McConnell, is the Senate Majority leader. In the United States, our legislature is split into two pieces, the House of Representatives and the Senate. For a law to get passed it needs approval of both houses. So at the moment, the Democrats controls the House of Reps while the Republicans right wing party) contro... |
How do freshwater rivers come from saltwater sources? | I'm not aware of any rivers that come from salt water sources. Rivers flow downhill, and the coastline rises above sea level . Most rivers come from freshwater sources and then feed into the ocean or dissipate. Wetlands act to filter water, and traps some of the salts and contaminants picked up by rivers as they flow. |
What makes mirrors reflective, or anything reflective for that matter? | Light will bounce off anything smooth and anything that doesn't want to absorb it. A Mirror is actually a coating of super smooth metal with a layer of glass on top. Anything the reflect light is very smooth. Just imaging bouncing a rubber ball on surfaces. The smoother the surface, they more likely you can predict whe... |
why aren’t 2x4’s actually 2 inches by 4 inches? | The milling process to my understanding. The original cut is 2x4, but after planning & sanding, the measure isn't a true 2x4, 3x10, etc. |
Nyquist Theorem perfect signal reproduction | The key element you are missing is the Nyquist limit. For perfect reconstruction the signal must have all frequencies at less than half the sampling rate. This limiting of the frequencies guarantees that only one continuous wave could have produced those samples. In the case you mentioned of sampling a sine wave at the... |
Why is carbon dioxide the only gas that is used to make drinks fizzy? | It isn't. Nitrogen is also used in combination with carbon dioxide in some beers . Nitrogen produces smaller bubbles and feels creamier and less prickly than CO2, which gives a nice mouthfeel to certain styles of beer. |
WHY do batteries work? | . basically a battery has two chemical reactions in it in different areas, one reaction where part of it really wants electrons, and one reaction where part of it really wants to give away electrons. but they make it so that the two bunches of chemicals can't get together the easy way and swap electrons. there's some s... |
How do self-driving cars sense traffic lights or road signs? | They have cameras. For other things such as speed limit signs, they are also equipped with GPS map, connected to a database that tells them what the speed limit is, in case the camera didn't capture the information. |
Can you use a GPU as a CPU? Why/why not? If not, what's the difference between them that makes it impossible? | CPU is better at tasks that require decisions and branch, GPU is better at repetitive tasks that take input since it's built to handle millions of pixels having their lighting shaded for example . Because the formulas are more of a todo list and all the same, they can be executed in parallel, which makes the GPU so fas... |
When it’s cold outside, why is our natural instinct to make it warm inside the house instead of just room temperature? | Room temperature is subjectively 'warm' when it's colder outside. But you need to heat more since the warmth escapes faster. |
What does the defeated Deal with the EU mean for Britain and the rest of the world | The short answer: UK parliament did not accept the deal, so UK will not be signing the deal with EU. What will happen next is anybody's guess. The Labour party has put forward a motion of no confidence in the government which could mean a General Election . |
How are Jane/John Doe cases possible? How could somebody go missing and not be noticed by a single person? | One issue is a lot of doe cases are old They didn't have the means for people to be found. For children, assume the family did it. There isn't any DNA for people to track. The family isn't going to speak, and it's possible for people just to not reconize the people even having children. If it's an adult it's possible t... |
What's the difference between reptiles and mammals that allows one to be warm blooded while the other can't create its own heat? | It is our cells that creates the heat when it produces energy for the body to use. In a mammal the cells are set, like a thermostat, to always aim for a certain temperature regardless of outside temperature and if the energy is needed. In a reptile the cells don't have this setting and instead uses the outside temperat... |
Why do birds migrate every winter instead of just staying near the equator year round? | Basically to spread out their living space. If every bird would stay at the equator it would be really crowded there. So as soon as they can find enough food further north they will migrate there because there is food but no one to eat it. So don't need to compete with so many other birds. |
How come the Queen in Chess is the strongest if women have been second class citizens for much of history? | The piece we call the queen was originally called the vizier, which was effectively a weak bishop. The medieval Europeans started using queen instead, and the influence of three really significant queens might have something to do with the queen piece's enhanced capabilities.Queens, emperors mothers etc. have always be... |
Why the weather changes, immune system become weak? | I believe this isn't really true. Changing weather, especially cold weather does not negatively affect your immune system. What does happen, is in the winter people spend more time together in confined spaces. Children play together indoors instead of outside. This is good for germs that are trying to jump from one per... |
Why is nutritional science so inconsistent and convoluted? | The effects of nutrition are hard to study for a lot of reasons. One big one is that the effects of a diet aren't always obvious in the short term. You might be eating something now that's bad for you, but if it takes 30 years of eating for problems to manifest you're not gonna know for a while. That's why it took peop... |
Does a fridge use any more energy when it’ll full of food than when it’s empty? | I see you are a bit frustrated with conflicting answers, the truth is, a full fridge will take more energy until everything in the fridge is at the regulated temp. If your fridge has a target temp of 4C or 40F, and the food is placed in the fridge at 20C , that food is heating the air in the fridge and the compressor h... |
Why do Americans show the price of a product without tax? | Each jurisdiction has different rules and tax rates. For example, the state of Louisiana charges a base rate, plus a variable rate based on last year's sales. The City of New Orleans charges one rate for inside the French Quarter and a slightly lower rate outside of it. It's easy enough to update the point of sale syst... |
What causes significant explosions to produce the iconic mushroom shape cloud to form? | Several of the answers here are saying that the mushroom top is formed when the rising hot air stops ascending and spreads out, so I wanted to say that's wrong. The mushroom top is also rising, it's made up of the initial bubble of hot air created by the explosion, flattened a bit and vortexing around the sides as it r... |
How could Netflix possibly be profitable considering the billions of dollars of debt they are amassing to put out all their content and buy streaming rights to existing properties? | Netflix has 58M subscribers in the US alone. That's half a billion dollars a month in income for access to their library. |
Why do children seem to "respond" more to pain? | It's exactly what you said in your last sentence. Children haven't had much experience so this awful new feeling of pain seems like a bigger deal to them that it actually is. Adults don't respond as much because they know the pain of hitting their head and that hitting their head is no big deal, it's a small pain that'... |
difference between cast iron and stainless steel pans? | Seasoning is treating the surface with something non-stick like oils or fats. Unless your cookware has a Teflon coating, you may find it better to season the skillet or whatever it is to provide a non-stick coating. It's pretty much mandatory on cast iron to keep it from rusting.Stainless steel is not iron. Stainless s... |
Why is 350F the standard temperature for baking? It seems very arbitrary. | It is actually kind of an arbitrary temperature, but for a reason. It's hot enough for all of the reactions that form the final baked goods to happen, with some room to spare of an oven runs a little cool. The fats will properly melt, the gluten proteins will swell and dry out, sugar will properly carmelize, and Mallai... |
Why is Japan suffering from deflation, and why does the government want to stop it? | Deflation means that stuff is worth less because there is less demand, which increases the value of money. This is bad for markets and the economy in the long term. It's not like things just going on sale and is happening across a wide range of industries. In the immediate term, it seems like a good thing, because it m... |
What does heroin overdose entail? | Others have explained how it slows / stops your breathing. The reason in movies etc they slap you on the face or do other painful things to try to save an overdosing person is that pain and a wakeful state overrides this shutdown of breathing. So it's worth trying to keep someone who has ODd awake because this may save... |
How can the universe be flat if it's 3 dimensional. | What exactly do you mean by flat? Do you mean like a hologram or having a flat geometry? I'm going to assume you mean flat geometry and try to explain that concept. Flat can apply to space in more than just two dimensions. In general there are three categories of geometry that a space can be in: Positively curved, Nega... |
Why do voters in the USA have to register as a voter for a political party before they are allowed to vote? | As far as I know you aren't required to register with a party to vote in a general election. However, some states require you to be registered with a party in order to vote in the primary elections. The logic there is that primaries are private affairs where the party is determining who their candidate will be. The par... |
Fossil fuels formed by the decomposition of dead organisms. How does burning them produce electricity? | Burning coal produces heat, which is used to heat water and turn it into steam. That steam is run through a steam turbine, which turns a magnet inside a coil, and the changing magnetic field produces a current inside the coil via induction. That's pretty how almost every every electric generator works, the difference i... |
Why do smokers not cough while smoking daily but cough after quitting? | I believe the lungs finally have a change to clean. I can't clean when you put tar you longs everyday. When i stopped with smoking i felt like i couldn't breath for a few days, but it gets better overtime. |
Why is car smog much more visible in colder weather? | The cold freezes the microscopic water dropplets. The same thing happens to your breath when it's cold. |
Why do Lithium Ion batteries take time to charge? Why can't things like phones and other chargeable devices charge almost instantly? | A battery stories energy. Large amount of energy are dangerous. If you release a ton of energy is a short period of time, you get a bomb. That's exactly what a bomb is. You back a bunch of energy in a small space, then release all the energy. A battery is also very much like a bomb. its a ton of energy stored in a smal... |
Why are beer bottle caps made in such a way that you either need a special tool (bottle opener) to open? Why aren’t beer bottle made with screw on caps? | Speaking as a home brewer, Typical beer caps are pressed on with a crimping tool. It's cheap and easy, and it scales up in production. The cheapest tool to do it is a cup - you place a cap on the bottle, the cup on the cap, and whack the top with a hammer. This is essentially all that's happening with any home tool or ... |
How come in some TV shows normal scenes seem to be very quiet but when fighting/shooting happens the volume gets about 10 times louder? | I've posted this before: Movie audio is designed for theatres, where the action scenes are best heard ear-splittingly loud . Unfortunately this means that turning it down at home to keep the neighbours happy makes the dialogue too quiet. If you have a surround sound system, try turning up the volume on the front centre... |
Why do some street addresses have more digits than are necessary? (e.g. 5051 Smith Road could be a road with only 10 houses) | I can't be certain based on a hypothetical street address. But, some cities will use a house numbering scheme based on some kind of coordinate system or distance from a starting point. So, even if you call it Smith Road, it could be 50 streets away from the starting point so all houses on the road start with 50. |
Why do some calendars mark the beginning of the week on Monday and others on Sunday? | Not sure if this is 100% accurate officially, but I think it's about when you think about your week starting. For example, I do science teaching and I do prep on Sunday in preparation for Monday lessons so Sunday is kinda the start of my obligations. In my previous science research position, work starts on Monday so I ... |
What happens to the electrical charge being supplied to a device once it is fully charged? | No charge is supplied once it is fully charged. Charged particles flow when there is a difference in electrical potential . When there's no voltage difference left, they have no impetus to move any more. |
Why does the red light at a stop light disappear when viewed through a blue tinted window (like the thing at the top of a windshield that reduces glare) | Red and blue light are different wavelengths. The filter only allows blue light through, which has a shorter wavelength. Red light has a longer wavelength, so it can't pass through the filter on the windshield - which means even though the red light is on, through the blue filter you won't be able to see it |
what prevents cow's milk from separating in the fridge? | Also full fat cows milk will separate eventually. Semi skimmed barely does and skimmed milk won't. This is because they remove some of the longer fat chains. These are less dense and are the ones that rise top the top. |
Why have movie trailers not only become much longer but now most seem to include the entire plot and end scenes condensed into the trailer? | Possibly because of how popular trailers have become ~~of~~ on YouTube. And I see this mostly with movies/directors/stars that already have a die hard fan-base that will watch it whether the trailer is good or not. As for me, if I REALLY couldn't wait to watch a movie then a nice juicy trailer would have some replay va... |
Why do services like Google Translate only offer "simplified" versions of Mandarin and Cantonese Chinese translating? Are the variations of Chinese that complex? | Traditional character systems are still being used in Hong Kong, Macau and Taiwan. It's only the mainland that uses the simplified character writing system. The communist party pushed for the simplified system to increase literacy. Basically they took out all the unnecessary strokes of the traditional characters to sim... |
Big Bang and the observable universe diameter | That's basically it. The rate of universe expansion isn't necessarily linked to the speed of light. Especially at the early stages of the universe. By analogy, an ant walking on the surface of a balloon as it's being inflated. The balloon gets bigger unrelated to how fast the ant walks |
How do gut instincts work? | One time I was walking down a city street with my wife. About a block ahead of us I saw 2 guys yelling at each other. A strange feeling told me to cross the road so as not to walk by them. After we crossed the road and kept going parallel they started fighting. Within about 5 seconds a police car pulled up so someone n... |
why hasn't the wall been approved if it's so costly to have a shutdown? | There was a serious threat to Pelosi's leadership in the House and she needs to demonstrate she's willing to stand up to Trump to preserve her authority over the party. If she simply accepted the border wall meekly, she'd be unable to muster the support she needs to do much of anything else. The most likely conclusion ... |
When writing a tip on a receipt at a restaurant, how do they charge you if you already paid? | You didn't already pay. The bill they bring to the table is what you will owe. So payment happens after you leave. It's a 2-step process |
The sun obviously has much stronger gravity than Earth, so why does the Moon orbit Earth and not the sun instead? | Technically, the moon is orbiting the Earth *and* the sun at the same time. [The actual path the moon traces is a squiggly oval with twelve bumps .] The reason we say that the moon orbits the Earth is because the Earth exerts the strongest pull on the moon of any object in the solar system. Why is that, if the sun has ... |
Why is the winter solstice only the beginning of winter and not the middle? | It takes a while to heat/cool an entire hemisphere, so the seasonal weather peaks lag the solar cycle by a about a month. Your coldest days in winter come in late January after all those short days and feeble sunlight finally add up. Your hottest days hit in July and August after you've been cooking since June. Unless ... |
why doesn't the size of the universe match up with the age of the universe when considering light speed? | The universe isn't growing, its expanding which means it's not measured by speed but by speed per unit. At a given moment the rate of expansion is called the hubble constant which is around 67 kilometers per second per megaparsec. When you learned nothing can go faster than the speed of light, what that really means is... |
How are "impossible" puzzles conceived of and designed? | Don't belive anything on YouTube while that puzzle is a messy one it's solvable for far less than 10 years How the story began 10 years ago Guy 1 : hey try solve this puzzleGuy 2 : sure! 15 min leter they go for launch and they forgot about it for 10 years |
How does EMDR (Eye Movement Desensitization and Reprocessing) work? | EMDR usually works through any stimulation that uses both hemispheres of the brain. So this can be looking back and forth, or hearing tones in each ear, etc. This rapid back-and-forth mimics how the brain acts in REM sleep during dreams, which is when we process traumas. The theory is that this, combined with exposure,... |
What would Jupiter’s gravity be like if it was made of rock and not gas? | As stated, if it was the same mass but only a different material, then it would have the same gravity. However, the denser material would probably make it have a much smaller diameter. The pressure would probably make the interior molten, possibly leaving a thin crust. But it would not be enough to trigger any stellar ... |
Why do front wheel cars handle better on ice and snow than rear wheel? | There are 2 main reasons. First, most cars have more weight over the front axle than the rear. FWD cars usually have ~60% of the weight over the front, while RWD cars usually have only ~40-50% of the weight over the rear wheels. Second, if your drive tires start spinning, it's relatively easy to handle in a FWD car. Yo... |
How do they generate unique MAC addresses? | Sometimes there are duplicate MACs. As long as they are on different LANs there isn't a problem, so sometimes they distribute to different countries or very different parts of the US, but big corporations could buy both in a big order. |
Why can’t cancer be cut out of the body? | It can be in certain circumstances. usually, tumors can be removed, although sometimes tumors are in locations that make surgery impossible. For example. a tumor in an inaccessible location or too close to a vital structure. Surgery also does nothing once cancer has metastasized, which mean cells have broken off from t... |
Why when you fall to sleep for a short period of time do you oftan wake up feeling more tired then before? | IIRC, to gain the effect of feeling rested, you must sleep long enough for your brain to complete at least one cycle of REM . If you do not enter REM sleep, or your cycle of REM sleep is interrupted by you waking before it's completion, you will feel either feel the same as before you slept or you will feel worse. |
Can adam and eve produce all humans from genetic and scientific point of view ? | The story of Adam and Eve generally is not considered to be a literal truth, but a symbolic story about the nature of mankind. It probably isn't scientifically accurate, and probably was not intended to be. So its inaccuracy in a literal sense isn't relevant to the truth of the story. |
What is “heat death” and why will the universe end because of it? | The heat death is a term for one possible end of the universe in which there are no concentrations of energy left. This would mean that every star has stopped burning and every black hole has 'evaporated'. The reason heat death will most likely occur is that the universe prefers entropy. Concentrations of energy radiat... |
Why magnetic compass needle aligns itself with the Earth's magnetic field but the same doesn't happen with metal ships? | Even if the ship was uniformly magnetized like a compass needle , the actual force exerted on it by the earth's magnetic field would not be enough to turn it. This is one of those things you could calculate, but the answer wouldn't be of any practical use. It's like an ant trying to lift a locomotive - you can calculat... |
How did aliens become associated with Area 51? | It was build to test new aircraft designs, and govt wanted to keep it away from curious eyes of foreign spies. Therefore, there were brutal security measures on place, everything about the base was covered in maximum secrecy. After Roswell crash, various theorists and UFO investigators claimed that Area 51 was the plac... |
Why are humans in general (including me) opposed to or frightened of bugs/insects? Why do they make people uncomfortable, despite their size? | Fear of a single insect isn't as bad as fear of a huge swarm of them. I think this is what freaks a lot of people out. Knowing that that one little wasp potentially has hundreds of his buddies lying in wait gives me pause, for sure. |
Why does yawning exist? | Recent studies showed that it cools the brain, and might be adaptive in that respect, but no one knows why it's contagious among the neurotypical. |
Why does Tupperware not dry in the dishwasher like all the other dishes do? | It's because it's hydrophobic. The water beads up well on the plastic, whereas on the other dishes the water spreads out, more like a film. The higher surface area per volume on the other dishes helps water evaporate. On the plastic, the water's surface area is almost as low as it can be, per volume, making it evaporat... |
In accounting world, why are assets listed as debits for balance sheets etc, | If you're asking why it's a debit instead of a credit robak's answer is perfect, if you're asking why is a liability a credit instead of a minus figure then it's a little different. The idea of the double entry system is that any transaction is composed of two equally sized parts: Debits and Credits. When preparing you... |
Why do small cuts such as paper cuts hurt more than large ones? | I think it's because paper only cuts through a few layers of skin leaving nerve endings open to irritation. |
what stops you from falling out of bed, even if the bed is smaller than your normal one? | I'd like to know as well, I've slept on the edge of the bed or couch etc and never fell off", 'IDK, but once as a kid my aunt took my sister and I to Jackson Hole for the night. Our room had bunk beds, but instead of being the standard bunk bed archetype, the bottom bunk was perpendicular to the top. We went to sleep o... |
If our body produces enzymes to break down and absorb all the major constituents of our food, what is it exactly that makes up our faeces? | There's the stuff that we don't have enzymes to break down. Most notably, cellulose which is what we may call fibre.Roughly 30% of feces is bacteria, and about that much is fiber/undigestible matter from food. |
why the probability of two people having the same birthday in a room of 20 people is like 50%, and not far lower. | If we assume that Birthdays are uniformly distributed, and take a room of 2 people, we then proceed to pick the first person, whose birthday is on day x Now theres 365^2 different combinations of birthdays these two people could have. Of those, exactly 365 * 364 possibilities are situations in which their birthdays lie... |
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