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Why don’t tattoos just go away? If it’s just staining your cells and the cells eventually die, wouldn’t it just disappear? | Because the ink is stored in the dermis the deeper layer of skin that doesn't replenish near as fast, that and the ink is literally passed on to the newly generated cells. |
Why has split screen gaming disappeared? | Split screen is just too intensive on the systems. To do a proper split screen the system essentially has to render 2-4 separate players. That takes a lot of system resources and with the new graphically intensive games coming out, that becomes increasingly harder to do. Consoles are also restrictive in how much resour... |
How touch technology works? | Also, there's resistive sensors. They have something like two webs of conductors separated by an isolator. When you press on their surface, you short-circuit small wires inside that sensor and the device will detect current and, based on which wires the current is, will determine where you pressed it. Unlike conductive... |
why do certain containers cause the liquid to disastrously pour down the side but others don’t? | Water is sticky. It likes to stay in contact with the sides of the glass. Sometimes, if the glass you're pouring from has a rounded edge, and you don't pour fast enough, the water moves so slowly that it sticks to the edge. It won't want to leave the glass, so it rolls over the edge, and keeps on sticking to the outsid... |
What is the point of your anus having so many nerve endings? Why is it so sensitive? | As a precaution I wanna know if I'm needing a poop, I wanna know I'm holding it in until I can make it to the toilet. |
what do anti-histamines do to the body that reduces allergies? | ELI5: Histamines are like a bunch of dudes standing in doorways and yelling at you to make you feel bad . Antihistamines get to the doorway before histamines do and take up the space first. They don't yell at you so you don't feel bad .And how come when I have really bad hay fever and take a anti-histamine, it never do... |
What are the benefits of leasing a car over buying one? | As you have probably realised it is an expensive way to buy a car, often more than buying it outright, even a new car outright. I asked someone about it before when they bought a brand new car on lease and they gave the following reasoning: * It is really convenient; often lots/all of the extras are included, like serv... |
Why do people micromanage their investments if S & P500 beats most managed funds in the long term? | First, a slight correction, you'd want to invest in/compare to a total market US stock fund, not an S & P 500 fund, which holds a somewhat arbitrary collection of large cap stocks. And here are your answers: 1) Boredom and the urge to gamble, the same human weaknesses that drive people to play slot machines or bet on h... |
Why do the Japanese refer to themselves with their family names in public? When is it okay to call them by their first names? | In *most* countries until recent times it was/is normal to refer to people by their family name unless you know them quite well. Only in the past 60 years or less has that changed in many countries. In such a country, you don't call an adult by first name until invited to do so. |
How does a banana get more sugary after it over-ripens, even after it is cut off of its tree? | It can ripen after being cut off if a fruit first grows to size with starch, and then starch gets broken down into sugar as it ripens. It already contains all the carbohydrates, it's just more like a potato than a sweet fruit. Not all fruit work this way though, pomegranates and citruses won't get any sweeter after the... |
; why is none of something pluralised? | I think that, in the context, it means not a single one of many? If you know of something that's singular but you don't have it, then you might say I do not have a/n blank. So basically the context changes how they're used. I have a 0% interest rate for the first 6 months refers to a single thing. I have no/zero intere... |
When you exercise your muscles ache afterwards, so how come your heart doesn’t ache after doing cardio? | Your muscles build up lactic acid when they don't get enough oxygen. Your heart is a different type of muscle so it don't produce lactic acid. |
Why is our hearing dampened while yawning? | Your ears pick up sound with your eardrum. It operates pretty much just like the musical instrument. When sound waves in the air strike the flexible membrane of your eardrum, it causes it to vibrate. The same way striking a drum with a drum stick causes its head to vibrate. Your brain perceives those vibrations as soun... |
Why are crabs cooked alive? | Sometimes we clean them first , then you don't have all the guts to deal with later.It's the most convenient way to kill them. I once watched a Korean man get a kettle of boiling water and exclaim "DIE" to come crabs in a bucket before he poured the water on them. They died pretty quick and there was no risk of spoilin... |
Do we really need to get our wisdom teeth removed? And what takes place after your wisdom teeth are removed? Do they just come back? | I'll chime in here. Some people don't have their wisdom teeth removed. In my case, I only have two wisdom teeth in the first place. And they're facing down enough that they don't impact my other teeth in a drastic way. I do have two crooked teeth because my wisdom teeth come in at a little bit of an angle, but it was n... |
Why do most video games only run on Windows and not Mac OS? | Eli5.. Consider a game like a cake. It's great but it takes effort to make the cake. You need specific ingredients and need to something to bake it in,like an oven. To make a windows cake, you use a specific ingredient and a specific oven. However a Mac cake would require different ingredients and possibly a different ... |
Why specifically does the Northern part of Africa have desert land? I’m assuming it’s on the same geographical level as other countries that have no desert at all? | You don't have to assume you can look at a map. Most areas around the same latitude as northern Africa have similar climates, with exceptions being parts of Asia and the eastern United States, and some bits of Mexico. It's essentially a giant open area of land without many rivers or any sources of water to make it lush... |
Why do frozen, raw chicken products keep getting recalled for salmonella? Wouldn’t the solution be to cook the product properly? All raw chicken could contain salmonella. | Gram-negative bacteria such as salmonella produce toxic substances as part of their outer membrane. These substances are relatively resistant to heat and chemical attack, surviving both cooking and digestion, even when their parent cell dies. This is not a problem for small bacterial loads, as each bacterium only produ... |
Is there any point in having 2 separate nostrils? why don’t we just have 1 large intake hole instead of 2? Wouldn’t it be more effective? | It allows for a directional sense, similar to hearing. Having 2 helps determine the origin of a smell, which was a lot more important when we weren't the apex predator. It's also helpful come spring time when allergies are bad, maybe one will be clear |
How does a tracking device like a Garmin watch or Strava mob app know what elevation you are, no matter where you are? | It's part of the calculations with the GNSS received data. There are some gotchas and not all receivers are good at it, but it does do the trick. |
Why is it portrayed in movies that if you get bigger to smaller people you look like you're moving slowly | Generally, with increase in size we get almost proportional decrease in overall speed and processes and decrease in material's strength, decrease of thermal throuthput and other stuff. That's caused by various factors, depending on what property we're talking about: ratio of volume to area, gravity and other remaining ... |
If supermarkets have a defined science/art as to where products are located, why are they all different? | In addition to other answes, the customer base is also factored in. For example, when you walk into a Target, whose demographic is women, you see things women are drawn to : women's clothing, jewelry, foundations, shoes, gift cards. Move to the opposite corner of the store for 'guy' things like electronics, sports gear... |
Why don’t saltwater fish absorb the salinity of the oceans and taste salty? | As a person who doesn't like seafood or fish, I have no idea what you're talking about, when I eat seafood it's like licking a salt block left in mud. |
Are the emissions of the hydrogen vehicles neutral to the environment? | They get the hydrogen from water, typically using solar energy. When it turns back into water it's just reverting back to it's original form. The environmental effect is negligible. You have to remember the air can only hold a certain amount of water before it precipitates so adding more water to the system doesn't hav... |
Why is it impossible to change from first gear to reverse while driving, but not the other way around? | Forward gears have synchros, where reverse gear usually doesn't. Synchros help to synchronise the speed of the output shaft of the gearbox to the speed of the input shaft. This helps the gears mesh without grinding when shifting between gears. The reason they are often not found on reverse is that the car is assumed to... |
what causes the pain in a headache? | [_URL_0_] In my case, my cranial nerves are pinched because my 1st and 2nd cervical vertebra are crooked. they sit like this: / it causes migraines that spread down my back and something similar to bell's palsy |
How did large congregations of people hear speeches (i.e. Lincoln's address, and countless other older speeches) without the use of microphones? | Some people have powerful voices, and politicians and orators would practice and take lessons to speak in a way to be heard by crowds. Benjamin Franklin did an experiment in which he kept backing away from a preacher addressing an outdoor gathering. When he got as far away as he could, and still hear the speaker, he ca... |
Why do schools force students to specifically use a No. 2 Pencil as a writing utensil when taking exams? | Because the automatic marking of papers has been tested with those. Other writing implements may well work but they don't want to risk not detecting the marks made with something else.The scanners used in schools work by shining light on the scan-tron and recording specific ranges of reflection that the graphite have. ... |
How do hackers use brute force attacks like dictionary attacks if I get locked out of my account after 3 failed attempts? | Those systems have been put into place to prevent brute force attacks, they aren't everywhere. Also, websites frequently store passwords, etc, in an encrypted database. This is supposed to stay private to their servers, but sometimes those databases get stolen. Once the database is stolen, it is just a file -- the hack... |
Why do our eyelids seem so hard to lift when we’re tired? | You may not notice it, but you are constantly using muscles to open your eyes. When you are tired, these muscles get tired, and cannot hold your eyelids open anymore. It's as simple as that! :) |
Why do people see/hear terrifying things during sleep paralysis? | So there is a part of your brain that basically paralyzes your body while you dream. This prevents you from hurting yourself by doing what you're dreaming of. Sleep paralysis is when you're brain is basically generating dreams, but your conscious mind is also working. This most frequently happens when you're in a phase... |
Why can't astronauts "wash" their clothes by purging the bacteria into space. | Space will kill bacteria but it's not going to remove the dirt from the clothes. So the clothes are still dirty, probably still stink and new bacteria will start to breed on it as soon as you take it back inside. They don't change clothes because there's bacteria on them, they change them because they're grimy and spac... |
How do platelets divide and multiply without having a nucleus? | > Moreover, how do they know they are needed, without the guidance of a nucleus? They don't. They stick wherever they can, which happens to be wherever a blood vessel is disrupted. |
Why has Fructose such a low Glycemic Index? | It needs to be converted into glucose in the first place. This takes time and it's the cause of lower glycemic index. |
Why isn't solar energy widely used? | Actual ELI5 from an Energy Chemist: * Solar Panels aren't great everywhere * The sun shines while most of us are at work, and we have no good way of storing that energy * There are some shitty regulations power companies place on people with solar panels These are really the only two-ish reasons. Everything else mentio... |
Why are some structures/towns of ancient civilizations found under the ground? | In some regions of the world, cities were built with mud bricks. These are a good building material, but they degrade over time and have to be rebuilt every once in a while. These cities grow a characteristic hill, the so called [tell] Other cities grow upwards because it was abandoned or destroyed, and new homes built... |
How do cameras record and convert media to a digital platform? | Cameras record light information. They can store the information they've captured in several formats. Some of them can store in one format and later convert to another. Computers can do even more awesome conversions. Digital platforms, depending on what you mean, might be exemplified by Instagram. That platform stored ... |
The mechanisms between right-sided heart failure and left-sided heart failure. | So the heart is a functional organ, but can be thought of in 2 separate pieces. Left heart failure and right heart failure both are usually causes by pressure. Pressure agaisnt the emptying. This causes the muscle to grow in an effort to create more pushing force to squeeze blood out. Eventually it gets too large and c... |
why your eyes/head feels weird when you wear glasses without needing them or with the wrong prescription | The lens in your eye is supposed to be shaped like a cool spherical ball. Some people have very slightly oval shaped lenses, so the glasses are made to distort the image in the correct way. So if you have a skinny and tall lens in your eye, the glasses try to distort it in a fat and wide way, and vice versa. But if you... |
How can Scientist view the Atoms of something with an Electron Microscope without seeing the Atoms that make up the lenses of the Microscope? | First of all, it is incredibly difficult to see anything at the atomic level with an electron microscope. And more importantly, electron microscopes don't use physical lenses. The lenses generate an electrical field that focuses and directs a fine electron beam. The beam travels in a vacuum before it strikes the sample... |
why are wind turbines shaped like that? Would having wider blades or more than three blades give them more energy conversion for a given wind? | Wind turbines are an optimization problem You want the blades to be long so the tips generate as much torque as possible, but you also want them to be light since they'll be spinning. To get long light blades you end up needing to make them skinny and 3 blades helps keep everything balanced. You also don't necessarily ... |
Is it likely that a diet including lab grown meat will have a lower climate footprint than a fully plant-based diet? | I wonder how that compares to farming insects for food as well since it's suppose to be very sustainable even in mass production. |
Other than allowing people to believe whatever they want, what legal protection does Freedom of Religion actually offer? | What do you mean 'would be?' You do realize there are places on Earth where people are literally murdered for believing the 'wrong' religion? |
Centrifuges: what do they do and how do they work? | Think about how a balloon full of helium floats. The helium is less dense than the rest of the air, so as gravity pulls on everything it pulls on the helium just a little less, and the rest of the air a little more, and the helium gets kind of squeezed to the top. That happens whether or not the helium is concentrated ... |
Why fried chicken is so common but fried beef is nowhere to be found? | I think it depends on region. Just last week I've eaten fried beef and from what I've heard it's really common in Austria |
Why do domesticated animals enjoy and/or crave having their faces pet? | Consider that our domesticated animals can't generally reach their face. I just imagine we're the only real way they can scratch an itch. But sure maybe it's also related to how animals groom each other when friendly.Also, for cats in particular, they have glands on their forehead that puts their smell on things that t... |
What happens to water after I drink it, but before I pee it out? | The other answers to this explain it pretty well so here's a Fun Fact: 140 L of blood pass through the kidneys each day . You have about 5 L of blood in your body. So each drop of blood passes through the kidney ~28 times per day. So water is being constantly filtered from the blood, then reabsorbed in the kidneys at a... |
What makes burner/trap phones untraceable by the police? | The phone is bought at a physical location for cash. There is, therefore, no record of who bought the phone or who currently owns it. The phones are pre-paid with a number of minutes of talk time that is included in the sales price, so they already have a number and available air time. While a phone's location can be t... |
Why do some gasses have an odour while others are odourless? | You know that smell gas has? They put that in. You see the gas is odorless but they add the smell so that you know when there's a leak. |
Why are culverts and drainage pipes “ribbed”? Wouldn’t a smooth pipe be better for letting stuff flow through? | The plastic ones? Try to bend a straw, you really can't. But if you try to bend a bendy straw, that is ribbed in basically the same manner, you can bend it. |
Why is alimony necessary? | Because one spouse often either stops working for a time or sacrifices their own career for the other's career, but becomes accustomed to a lifestyle they as a pair built. Let's say a couple meets and he makes $50k, she makes $40k at the time. His career path keep growing, and 10 years later he's making $100k. But she ... |
what exactly is a cramp and what causes it? | I've heard from a doctor that magnesium deficiency can cause odd cramps. Talk to your doctor.You may want to see a neuromuscular doctor. There are diseases you would want to know if you have such as mcardle’s or myotonic dystrophy. If nothing else, doc will tell you to drink more water Used to wake up to cramps in my c... |
If the Earth goes around the sun,in an elliptical pattern, why does the north and south hemispheres have opposite seasons? | The Earth's orbit and distance from the sun actually has very little impact on the seasons . Instead, it's the axial tilt of the planet and the angle at which sunlight hits. You know how the air is cooler in the morning and evening, but hottest when the sun is lower in the sky? That's because the same amount of sunligh... |
the process of pawning and how it benefits both people | Before banks and credit reports, pawn shops served as an easy way for people to borrow money. Let's say you bring a gold watch to a pawn shop, they value it at $500 now you can borrow $500 from the pawn shop, and they hold onto your watch for you. When you have the money, you go back to the shop, pay the $500 , and col... |
- Computer Memory Leaks. Why do they happen, and what happens? | Give me an apple, please. OK, here, take the apple back. Give me an apple, please. OK, here, take the apple back. Give me an apple.Give me an apple, please. OK, here, take the apple back. That's a memory leak. I asked for some memory, and when I'm done with it I give it back. But sometimes I forget to give it back. The... |
How do armies collect their dead soldiers? | The armies collected the dead after the battle or war is over. For the pacific in WW2, it is likely that they wouldn't have had a chance until the whole island was captured or at least a big area was secured. |
How and why does the keto diet work? | A ketogenic diet is a low carb, high protein and high fat diet. No one knows for sure if or why the keto diet might work. People have ideas, but they haven't yet been proven by researchers. The prevailing opinion among physicians is that it works because it forces people to keep track of their diet and be mindful about... |
Why can’t we remember things that happened before we were 6-8 years old? | According to my psych 101 textbook, it's not well understood. It's called childhood amnesia, though. |
What Radiation does and why is it so dangerous? | I've seen everybody try but I'll try to make it simpler. Radiation is essentially invisible light, very destructive invisible light. It goes through you and damages your cells. Radiation comes in the form for simplicity as an Alpha particle, a Beta particle or as a gamma ray / xray. Radiation is emitted by radioactive ... |
How are games 'ported' to different platforms like PC, Xbox or PS? | It depends largely on how it was written, and what engine it was written in. A game made with unity, you can literally press a button and it does a lot of the work for you . Other engines, there's really not a whole lot to do, when you consider how much goes into a game, especially if you decide early on that you want ... |
My apartment key opens my own door, but also the communal laundry room, communal basement and communal elevator keyhole. How does that work? | A single key has multiple different teeth cut into it, and those teeth match up with pins and tumblers inside the lock body. What you're noticing is that the lock body for the communal areas uses a smaller set of pins that match teeth that are common across all the keys, but other apartment doors have more pins inside ... |
How does smoking or drinking coffee affect your digestive system? | Caffeine alerts whole metabolism to work faster depending on the amount taken and body tolerance. It's also diuretic so you'll visit the bathroom for no 1. Smoking also increases blood pressure among other things. I don't know biological reasons for this but it triggers no 2. & #x200B; If you are indeed smoking coffee,... |
How does air move across a room? | > just closed a window the door rattled That shouldn't happen, unless you're leaving something out or missed the sequence of events. Usually, shutting a door can rattle a window, but not the other way around, because doors swing and windows merely close. It's air pressure. When a door swings closed, it's pushing air in... |
Why does our perception of time change, depending on what we're doing? | Your sense of time is relative, and to the biggest thing that affects how it seems to flow is how often you think about its flow. The reason for the expression time flies when you're having fun is that when you are enjoying yourself, you don't typically think about how long things are taking or how much time is passing... |
Why are 144hz monitors more popular than 120hz? | Good marketing. 144hz monitors introduce a hiccup when playing 30 and 60 FPS locked video or games if you don't modify the monitor settings every time. 120 is divisible by both, making it a smoother and more versatile experience with fewer adjustments. If all you do is play CSGO at minimum graphics settings in hopes yo... |
Why is it a son named after his father is a “Jr.” but a daughter named after her mother not? | Technically, you can. Junior is gender neutral. With more women keeping their last names, I don't see why there couldn't be more female juniors. It's honestly sad that their aren't Catherine Gardener III or Ella Harrison IV. |
Can a fat person die of starvation, or does the body *always* eat up its fat stores before starving? | Yes and no. Given that the person's only health issue is being overweight , then yes, they could survive longer than a skinny person without food. But they will still eventually die once all of the fat is used up. Your body will first use glycogen stored up in various parts of your body. This is a sort of fast access r... |
What’s the difference between “wearing a costume” and “cosplay”? | Originally, cosplay meant wearing the costume *and* pretending to be the character. The term became so popular it kind of changed meaning into wearing a costume *of* a particular fictional character. So if you dress up as Batman or Godzilla that might be considered cosplay, but if you dress up as a ghost or a cowboy th... |
How does buoyancy work? | When you put something in a fluid, the fluid presses up on it. The amount it pushes up depends only on the volume of water that the object displaces, and it's essentially the weight of this volume of water. You can make ships out of steel, only if the inside of the ship consists of a mix of steel and air . This also ex... |
How did the United States become a world powerhouse in such a short time? | Generally there are a set of factors that attribute to a countries overall economic development that ill list below. 1. Human Capital, not only just an amount of workers but also efficient workers. In this case an educated work force will produce a higher quality labor pool. 2. Health/life expectancy, this ties in to t... |
When you're driving and it's sunny outside, why does it look like there is water on the road ahead of you but once you get closer it's gone? | You're seeing heat distortion. Hot air directly above the roadbed is refracting light from the sky in your direction. You're seeing the sky, but since your experience tells you the only thing that looks like it reflects the sky like that is water, your brain tells you it's water. As you close with the patch of hot air,... |
what happens to the circulatory system after a blood donation? | We can safely donate up to a pint without any ill effects because it's a relatively small portion of your blood. Your blood volume will be back to normal within a day or so as your body makes more plasma pretty quickly. It can take several weeks to replace all the red blood cells and other blood cells. |
Why don’t more countries use nuclear power? | Nuclear power isn't great compared to other forms of generation. Compared to solar power, nuclear power is far more expensive and takes far longer to bring online. Nuclear waste is a consideration as well. Other forms of power are easier, cleaner and cheaper. |
How can companies like Uber and Lyft continuously lose billions yet stay in business? | They're in a price war with each other, and they hadn't been before. The guerilla tactics have put them both at a disadvantage, and they're gonna have to stop or they'll both die. Basically they're eating into their savings to try and push the other out, since they're only recently public. |
How and why do selfie cameras make you look different than when you look in the mirror? Is it something to do with the lens? Or perhaps the mentality of our perception? | Selfie cameras typically have really wide angle lenses, so you can easily frame yourself with your background when held at arm's length. However, wide angle lenses at close range will heavily distort your face, making your nose appear bigger, and your face smaller. THIS is why you look different in selfie cameras.The w... |
How are electronics made water resistant or waterproof, even when they have perforated or moveable parts (i.e. like a phone )? | lots of rubber rings. Things like the headphone jack, charging port don't give off current so it doesn't hurt the phone when water gets to it. The sim tray has a rubber ring around it that you squish into the phone so it's water tight. This concept also goes for the headphone jack etc, there is a rubber ring to prevent... |
how does uv light clean stuff? | UV light at sufficient levels scrambles germ's DNA, interfering with reproduction. A small number of pathogens is unlikely to produce enough toxins or otherwise do serious harm, it's the multiplication into colonies that does the damage. |
Is it possible to use split radioactive waste until it reaches a stable element? | There are actually ways to reprocess some of the leftover materials from nuclear energy production where basically what's still usable is separated from actually useless waste. Apparently they don't do that in the US because these procedures can also be used to produce weapons? Reprocessing nuclear waste as much as pos... |
Why are rainforests always so wet? | Sometimes it's due to terrain. The Hawaiian islands have dry and wet sides, the moisture laden water from the ocean hits the mountains, rises, cools, and falls as rain. By the time the wind gets to the other side of the island the moisture is gone. The rainforests remain humid from the rain, which decreases evaporation... |
How do tarrifs work? | So a 5% tariff is essentially an additional 5% tax that companies have to pay upon importing the product. The tariff is supposed to discourage companies from buying from a specific country. In reality, that doesn't happen. That 5% just makes customers pay 5% more because that is cheaper and/or easier than finding anoth... |
Why are planetary rovers built in clean rooms if they're just going to get covered in dust when they arrive at destination planet? | Because getting dust on the surface of the rover once complete is not as bad as getting it in between the subsequent layers of its fabrication. It's similar to making transistors. A layer of dust on top of a complete transistor is unlikely to destroy the device, but a single particle of dust between the semiconducting ... |
I understand that at the end of the day consumers pay for tariffs, but where does the money from those tariffs go? | Imagine your are running your own lemonade stand, but you get your lemons from your neighbor, who grows amazing lemons in their backyard. You have to pay for those lemons, and in the end, you have to make the lemonade, so there is some labor involved. You want to get paid, and you need money for the lemons, so you char... |
How does an Ames Room work? | Ames rooms work on the fact that your brain actually guesses at the sizes and distances of objects using a variety of clues. It likes to do comparison of typical sizes. People tend to be a certain size, do if the object is a person, the brain assigns a size. Same with Windows. While they may vary in size of they are ne... |
Why does FedEx always have to shoot your package to the other side of the country before delivering it when it's two states away or less? | They often don't. There's several regional hubs that are connected and often used. Even little Boise has a direct flight to Oakland for west coast packages. For the rest, they all go to Memphis, are unloaded, sorted and reloaded on flights to the hub closest to their destination. |
The physic of the shadows on this image | Basically, all those shadows are parallel, and pointed away from the Sun. However, because of the effect of perspective, they all seem to point toward the [vanishing point] on the horizon. Looking at the Breaking Bad photo, it looks like the camera was facing directly away from the Sun. The shadows are all parallel, bu... |
When you delete stuff from your phone (pictures, videos etc.) where does all that data go? | Imagine computer memory as a bunch of switches, either up or down, on or off. The switches themselves go nowhere, they just get flipped on and off in different combinations to mean different things. For example, if you have just two switches, two positions of binary, if they're both off , this can represent the number ... |
Why do people always say "false rape accusations are extremely rare" when a false rape accusation happens? | Because it is incredibly rare. So they are just telling the truth. It is so rare, in fact, that it makes the news when it happens. If every rape and sexual assault made the news every time it happened, you'd never hear about anything else.People will also often say "plane crashes are rare" or "shark attacks are rare" w... |
why is Australian internet so bad compared to the rest of the 1st world? | Depends on which internet you're talking about. Connecting from your Australian PC to an Austrailian Server should be first-world speeds. If you're connecting to a server outside the country, odds it's thousands of miles away, so it takes awhile for every message to literally travel those miles. Unfortunately, that's a... |
I took the bus for three hours total today. The way home felt way shorter than the way there. Why is that? | Because you went home, assuming home is a place you rather be then where you went. It's like me flying to Chicago but then going back to Houston . |
Why are hotel sheets and quilts always white, knowing it is the easiest to stain? | They're white *because* it's the easiest to stain. The hotel wants to show the guests that they did a good job of cleaning the sheets, because even the slightest stain would show. |
Why can my laptop pick up my WiFi very well, but my phone, on the same desk, hardly connect at all? | Laptops are larger so they can fit a bigger and better wifi antenna, usually the wifi antenna is built into the edge of the laptop's monitor. |
Why do some countries have differently shaped electrical outlets/adapters? | Rewind to the early 1900's when electricity started to show up in regular homes. There wasn't even any plugs then. It was all circuit breakers and hard-wired systems. And the system was often the property of the power company itself, you were not allowed to decide for yourself what to connect to it. When the plugs came... |
how can the universe be expanding, when it is growing in to space that already exists? Isn't that just discovery over expansion? | The universe is not expanding into something that already exists. It's just expanding. Period. There's nothing outside of it that it's expanding into. Expansion in this case also doesn't mean what we normally think of. For example, when you inflate a balloon, it expands, but it has a finite size and boundaries. The uni... |
Why do exams have pages that say 'blank page do not write' or 'page left intentionally blank?' | Page left intentionally blank: They may have wanted a blank page to act as a divider or the back page of the final question is blank and they put that text there in each instance to let the test taker know that there are no questions on this page. Yes, you'd think it would be common sense to know that a blank page is b... |
Why cannot there ever be a successful breeding between a human being and another animal? | Because, the mechanics of genetics have some clear and simple nuances to prevent this from happening, so divergence of inherited traits doesn't result in cronenburg babies. These are long evolved over time. In short, this is complex life forms were talking about, Not a piers Anthony novel |
What do those short metal cored cylinders do for USB cables? | 1. No. They don't make the signal faster2. All wires are natural antennas. If a wire carries a signal, it can also radiate radio waves. As an antenna it can also pick up radio waves. The cylinders are ferrite beads. They are used to suppress this spurious signal or radiation.3. Some beads are embedded in the USB connec... |
How do smokers' lungs get used to smoke, and can they then handle inhaling all smoke (e.g. fire)? | The lungs don't get used to smoke, they actually get damaged by it. Heavy smokers actually don't use their full lung capacity to breath due to damage. |
How are some traits heritable? | All of your traits come from both of your parents. Explained simply, on a monogenic inheritance model, you have a gene which tells you what eye colour you have. This gene has two possible alleles , one blue and one brown and each person always has two alleles. Now, the brown allele is dominant . The blue allele is rece... |
At low tide, where does the receding water physically go? | High tides and low tides are caused by the moon. The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. When you're not in one of the bulges, you experience a low tide.Tides ar... |
Why is the majority of the Earth's landmass in the northern hemisphere? | That's just where the continents happen to be at the moment. They move around from tectonic drift. ~200 million years ago Gondwana supercontinent had most of the land mass in the southern hemisphere.It is just a coincidence that they most land is on the northern hemisphere right now. The continents drift slowly on the ... |
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