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the rotation of the earth is not a constant. in fact the rotation of the earth is slowing down, which means that a full day is getting slightly longer. without leap seconds our clocks would slowly drift ever so slightly out of sync with the actual day. we could deal with this by redefining how how long 1 second is, mak... |
Imagine you are out walking in the woods near your house and you find a cave. You think to yourself, "Gee that's a real nice cave, there's just enough room for my rocket car, my crime fighting computer and my superhero costume collection. It'd be perfect for me." Let's say that nobody already owns the cave, so you move... |
It's more that we're really good at picking up subtle mistakes in humans, and fantasy beasts have no reference, so its a lot harder for them to look wrong. Probably because we are so adapted to human skin/tone/etc. that our brains can pick out what is real and what is fake. Since we can't actually conceptualize what al... |
Anxiety/stress are the result of your sympathetic nervous system being activated (fight or flight response). When we are threatened we experience a variety of physical effects, e.g. increased heart rate, GI upset, jittery muscles, *rapid shallow breathing*. This helps us fight the threat or run away from it. Helpful wh... |
In a 1080p screen each pixel is represented by four individual points of light, one for each color and two for green. However when projecting 1080p video on a 4K screen you have 16 individual points of light for each pixel. This gives you a lot more room to play with. If you just map it naively you end up with a crispi... |
There's a [treaty] ( URL_0 ) that forbids countries from claiming territory in outer space. That means that while theoretically a private company could simply go up there and claim it, but it wouldn't be recognised by any earthly government... they'd have to set up their own government |
Because of the air in between you and the light source. The air is at slightly different temperatures so it's like a heat shimmer effect you get above a fire, also the air is full of dust and other stuff we don't normally notice, but at distances it blocks a bit of the light. |
It mainly has to do with the monopoly that ISP's hold over different areas. Most people have one choice for their internet provider. It's not like you can switch to a different company if you aren't happy with their shit service. Another thing is that the capacity for fast internet exists it's just that they have no re... |
The same reason you get viagra and penis pill spam in your email. Some people are unbelievably stupid and willing to spend money to prove it. > It seems like this type of advertising would do more harm to their brand than help I suspect most of us associate annoyance with the *ad* itself, but not the *brand* behind the... |
So, my source is an informational presentation from a law enforcement officer. If someone wants to add a different perspective, by all means... Dealers want to be known for having the strongest stuff around. Yes, people OD. They consider it advertising. Tldr it makes the drugs stronger and more addictive. It's easier t... |
When you take too big a swallow, it stretches your esophagus, causing it to spasm. This hurts. The OP is talking about two different things. In the title, we are lead to believe that the OP is talking about "stretching your esophagus, causing it to spasm" However, in the comment portion, OP is talking about "There are ... |
The less water you use the sooner it will boil and the less energy you use maintaining the boil. However too little water and you end up steaming the pasta or even burn the pasta and that is not what you want. So the right amount of water is just so that the pasta starts to appear over the water just as it is done, whi... |
If you were placed in a sealed room with no pipes to the surface it would be like placing a bag over your face and waiting to suffocate. Eventually through breathing the oxygen level would drop and carbon dioxide levels will rise, you will feel sick, possibly dying if you stay long enough. For mines, underground parkin... |
Human hearts can have significant differences in exterior morphology, but if you google images online - they mostly have a pointed lower end with two slightly bulbous areas on either side at the top with the left and right atria. That, along with the color red, isn't too far-fetched for a crude symbol. [e.g.]( URL_0 ) ... |
100% equals the minimum daily amount recommended by the FDA. You can easily surpass this by eating vitamin rich foods or by taking a pill. It doesn't mean that is all your body can process vitamin C is very easily absorbed (contrary to what some ignorant commenter posted here), it's water soluble your body absorbs as m... |
Great question. I guess there are two prongs to this as I see it. Economically (and legally) slaves had no freedoms, they were property. Like others have said, they were treated poorly in the context of today's ethical codes. In the context of the time, they would've been cared for to the point at which it was necessar... |
There is often a slight delay between her singing, her voice coming out of the speakers, and the sound echoing and coming back to her. This can result in what's called a [delayed auditory feedback]( URL_0 ) which can make talking or singing impossible. > Most delays that produce a noticeable effect are between 50-200ms... |
Since we are always around our own scent we become used to it and no longer notice most of the time. If you burn a candle and stay in the room you will no longer really smell it because you have become accustom to it. We adapt to smells very quickly. Within the space of just a few breaths, we can lose our ability to de... |
If the audience is busy laughing, a good comedian will repeat the sentence they were busy laughing at so the audience has a chance to refocus and not miss the end of that sentence or the beginning of the enxy. I've seen some bad comedians that just can't read their audience and they keep going through their routine fir... |
Those are national or at the least very large area commercials that get cut short. Companies who pay to have their commercials show over all of the regions that a particular cable company caters to sometimes get overwritten by "local" commercials. These spots cost less but won't show up everywhere, just a specific regi... |
Because the time zones go from UTC-12 to UTC+14. Specifically, the cause is several islands in the Pacific Ocean such as Kiribati. Kiribati is an island nation whose islands are spread across three times zones. Normally, these time zones would have been UTC+12, UTC-11 and UTC-10. The problem is that it would put one pa... |
The streaming services collect all the money from subscriptions and ads, then each artist is paid their percent of the total streams. If there's only 100 streams that months, and Taylor Swift songs account for 10 of those, she gets 10% of the revenue that month. When you break it down, each streamed song gives the arti... |
His net worth is largely tied to his investment holdings with Microsoft, although he more than likely has investments elsewhere. As the share price of Microsoft fluctuates daily on the market, his net worth fluctuates with it. If Microsoft has a particularly bad quarter, he publicly lost a lot of money. |
Because you have no gag reflex. You have likely lost your gag reflex through the repeated taking through your throat hole of various large objects. What these objects might have been we can only guess. It is possible that you are bulimic and have lost your gag reflex that way. Perhaps you're a sword swallower. But the ... |
Newspaper columns are justified on both the left and right, which means that the left margin and the right margin are both straight (see [this image]( URL_0 ) for a visual explanation). There are a couple of techniques you can use to get both margins straight, and usually you use a combination of both: you can use hyph... |
The antibiotic doesn't change the bacteria to be resistant, but it creates selective pressure for resistant strains. In the absence of antibiotics, the resistance mutations would still arise but, as a very rare mutation conferring no survival advantage, they would persist in the population only at a very low level and ... |
The heart is made of a special type of muscle tissue (cardiac muscle; the other two are skeletal or voluntary muscle, and smooth or involuntary muscle). Cardiac muscle cells have more mitochondria than other muscle cells, and mitochondria produce power for the muscles. The cardiac muscles are joined together in a way t... |
Because you need the microphone to be right next to your ear for it to work. If the phone is in your pocket, it can't pick up the exact sounds it needs to cancel, because the sound at your hip is slightly different than at your ear. Additionally, there is the delay caused by the wire which would likely cause the cancel... |
If two atoms have the same number of protons, that's what makes them the same element. We identify elements primarily by the number of protons, as that's what makes them what they are. The number of electrons in a given element atom dictates whether or not it is charged, but electrons are much more fluid than protons, ... |
Korean uses an alphabet called hangul. Individual letters are composed into syllables, with each syllable occupying one block. This means that the computer needs to know when you have finished typing one syllable and want to start typing the next: fortunately, the Korean writing system has very strict and simple rules ... |
It doesn't. You don't need life insurance if no one is dependent on you. Babies don't have people depending on them. The product is basically bullshit. A whole lot of these comments show a lack of understanding on how different life insurance policies work. Gerber and the like sell whole life insurance which straddles ... |
Nobody likes Norton because it is a resource hog that slows your computer down. It doesn't effectivly do it's job. Norton's CEO even admits that it only gets 40% of viruses at best. So why would people pay outrageous for a program that slows down their computer, and only does less than half the job. Stick with Microsof... |
If hunting deer it is recommended because deer are color blind. The orange is so other hunters can id you and not shoot you. You want to stand out because you don't want other hunters to accidentally shoot you. Yes, this might occasionally also make you stand out to some of the animals you are hunting (though not alway... |
The United States has several time zones. The 9 means it is on at 9:00 in the Eastern Time Zone, the 8 means it is on at 8:00 in the Central Time Zone, which is one hour earlier. the 8 c is for American central time zone it's UTC -6 most of Asia is anywhere from UTC+4 to UTC+9. so if a show airs Tuesday night at 9/8c f... |
In a pressurised compartment or spacesuit or something, the air between your mouth and ears isn't moving relative to you, so things are normal. If the air is moving past you faster than the speed of sound, (either you or the air can be moving) the sound from your mouth may not be able to travel through the air to your ... |
It's hardwired. Red is the color of blood and bleeding, green is healthy vegetation. On a biological level, we don't want to deal with injury and we do want a healthy fertile landscape where food and shelter can be found. So we instinctively like green and dislike red. |
Much like a small sect of coffee drinkers, there are tea ~~connoisseurs~~ snobs that will turn their nose at you if you don't brew your tea at the *proper* temperature. Tea pots are designed to heat water to a specific temperature, where the microwave can produce irregular and inconsistent results. In reality, most peo... |
It's quite simple. Advertisers pay money to Google/Youtube for the rights to show an advertisement before (or during) a video. Google/Youtube takes a cut of the revenue, and the Youtuber earns the rest. The amount advertisers are willing to pay in terms of cost per click or cost per view, is dependent on many factors, ... |
It is your pharyngoltympanic tube (Eustachian tube) opening. It connects your middle ear to your throat. Opening it is also how you "pop your eardrum" or equalize pressure within the middle ear. Often, the bones in the jaw's joint, which is right near the ears, is not a nearly perfect sphere like it should be. The rubb... |
Hi, I'm going to offer you this pen! It's originally $100 but I'll give you a 90% discount. It's yours for the low, low price of $10! It's a combination of higher markup than the discounted price and/or using the discounts as loss-leaders. A loss-leader is selling something at a loss and relying on people's impulsive p... |
A vector is an arrangement of values in one dimension, like this: V = [a, b, c, d, e] etc. A matrix is a vector of vectors. For example v1 = [ a, b, c ] v2 = [ d, e, f ] v3 = [ g, h, i ] v1, a, b, c, M = [ v2, ] = [ d, e, f, ] v3, g, h, i You can think of a matrix as a two dimensional arrangement of values. A tensor is... |
It is called that because space has nearly no atmosphere and extremely low pressure. Liquids and gasses always will flow from an area of high pressure to areas with lower pressure while no other forces hold them in place, this is how a vacuum works, by creating a low pressure system that pulls air from higher pressure ... |
Time zone boundaries tend to follow the same boundaries as countries or subdivisions in order to keep time as constant as possible. If you had an appointment in another state, they would schedule you their time, not yours. Some businesses, who are close to a timezone difference, will always report their time with the t... |
In the olden days, credit cards were often not scanned with the mag strip, because the equipment was still too expensive for smaller retailers. What they did instead was use a carbon paper and a roller machine to take an imprint of the front of the credit card with the numbers. This was commonly part of the receipt, an... |
They train to perform well for their sport. If you do something that is challenging repeatedly your body adapts. So their bodies are more efficient with oxygen, and they probably have a large lung capacity and good control over their heart rate. Some of these records are also set by breathing in pure oxygen. There's a ... |
Depending on the product and company a lifetime supply would mean a certain amount each year for so many years. In this case vans which would probably be one pair per year. If the t & c stated 30 years for example it would be a total of 30 pairs in way of a voucher per pair maybe,then that person would give over the vo... |
Med student and martial arts buff here. Most people just aren't used to getting hit. It's a huge deal for most people because it's an egregious violation of all kinds of social norms, it destroys their pre-concieved notions about themselves and other people, and they just aren't accustomed to pain in any form. It doesn... |
You each got 50% of your dad's genes, some overlap and some don't, some get activated earlier than others. |
If you're suffocated by being locked in a small box, it's not actually the lack of oxygen which is the problem. Normally the cycle is 20.9% oxygen, 0.04% CO2 in, then 16% oxygen 4% CO2 is exhaled. Inhaling 1% is very uncomfortable, "stuffy" air. 7%-10% CO2 is toxic and will lead to suffocation *even if there's sufficie... |
When you swipe your card, the machine is reading information on the card. One of the things it reads is a little message that says "Hey! I have a chip on me!" Now the machine knows, so it tells you to use the chip. |
Predatory [jumping spiders]( URL_0 ) actually have quite good vision, but that doesn't necessarily answer your question of why *other* species of spiders have so many eyes if they don't get good vision out of it. The "secondary eyes" apparently mostly detect the direction of light and/or movement, which is presumably u... |
The C compiler will craft a request to the operating system to assign an available memory location to hold an integer. When it's time to store a number there, the CPU will put an electric signal on its address bus pins equal to the binary address of that memory location, and a signal on its data bus pins equal to the b... |
My guess is that happy is capitalized because it's the beginning of a sentence, and New Year is a proper noun (shorthand for New Year's Day). New Year's Day is the name of a holiday. Because of this it is capitalized like every other proper noun. I just had an "aha" moment reading some of these comments. Americans (or ... |
This might be a snarky response but: have you purchased any 30-40$ mobile games? If you can play a game for free, what you are playing is what someone could create on a fairly small budget, in a fairly small studio, and then sell to investors in order to produce. Most of these games are riddled with ads and microtransa... |
I'm going to answer from an American perspective. The argument goes something like this. Public schools are really terrible. So the wealthy pay extra to get into private school. The less wealthy but still well off will move to areas where the public education is better than average. The poor get the worst public school... |
You are very much correct. Fresh water will burn, but an isotonic saline solution that's close to your blood plasma will soak in and rinse through quite comfortably. The burn from runny nose mucus was probably concentrated enough to be TOO salty, which hurts just as much. Or else your mucous membranes were inflamed, wh... |
The regulations forbid embedding non-edible things inside food. While banning bits of plastic in chocolate bars is a good idea in general, it also catches kinder eggs. The legal versions have a ridge on the plastic capsule which sticks out of the chocolate, like [this]( URL_0 ). Legally, it's now two pieces of chocolat... |
Basically, what it boils down to is that pretty much everything in our solar system [formed at about the same time]( URL_0 ). It turns out that this particular meteorite has a [particular composition that makes age estimations based on lead isotopes easier to measure]( URL_1 ). Thus, if we can get a precise estimate of... |
Say you have a seed. Deep down in the genetic code of the seed is the simple genetic code that says "have these cells build more of themselves." If you let all those cells grow, the ratio between old cells and new cells will usually be the golden ratio. The golden ratio is so common in nature because it is the product ... |
Regular eyesight has a resolution equivalent to around __576 megapixels.__ This is the resolution that must be matched in order for VR to appear 100% real. (Although lower resolutions might suffice, too.) |
Absolutely not. If you have ever looked into something's eyes when they die the pupils dilate and focus become unfixed. The eyes begin to look waxy. The spark of life you literally see leave their eyes. Its the most heartbreaking thing I have ever seen. I know this because I work with wild animals, wildlife. I have see... |
They don't. That's the great TV/movie trope. Police don't trace the gun. They match the recovered casing or intact bullet to the gun they retrieved at the scene at the same time as the perpetrator is arrested. The firearm does impose a wear mark of the rifling of the barrel onto the bullet. The firearm does impose a ma... |
There are two things that make ice cream soft - the ice is in very small crystals, and tiny bubbles of air mixed into it. When you melt and refreze it, some of the air bubbles merge to create bigger bubbles with more solid material around them, and the ice crystals that form are much bigger, tying the mass together. So... |
They invest the money you give them and earn interest on it. And they don't always pay out so they keep that money too. Most people end up paying more in premiums then they get in return, accounting for inflation and return on the invested funds. |
It's an interesting question because we want to know and understand as much as possible about our universe. But to your last point, you may well be right that we will never be able to really look beyond that origin point, and even if we could we might not make sense of it. |
Because the light coming off of your face is hitting the curved edge of the spoon and then reflecting off perpendicular to the surface. This makes it so the light that hits the top (from the top part of your head) is reflected downwards and the light that hits the bottom (from your chin) is reflected up. This creates a... |
No one knows for sure. But the leading theory is that somehow the pathways between sexual feelings and "mundane" objects and situations get crossed. So say you are five years old, and you see a lady wearing heels, your brain may "glitch" and a fetish is formed for high heels. Or they were pooping and it felt really goo... |
I assume you're talking about epsom salt baths. In reality, relaxing in a warm bath relaxes you and relieves soreness. Epsom salt does nothing in this application. |
A bicameral legislature is a system in which two bodies are responsible for making laws. Both bodies must agree on and pass a bill before it can be signed by the PM/president/whatever and become a law. The United States is an example of a bicameral legislature. The two bodies that make up our congress are the Senate an... |
Your cable company is compressing the signal. Over-the-air transmissions are 100% pure, uncompressed video signals. |
Consciousness tests. Things like setting up a mirror and watching to see if the critter figures out that they're seeing themselves or if they think they're seeing another critter. There are plenty of others, but that one is basic and persuasive. And the answer is that several other species are self aware. Do you mean s... |
The key difference: With a credit card, the *card issuer* must fight to get *its* money back. With a debit card, *you* must fight to get *your* money back. If you report your card lost or stolen before any fraudulent transactions occur, your liability is zero. Many credit cards promise zero liability for all fraudulent... |
1/Distance^2 (As distance increases the luminosity gets exponentially smaller) Basically the further out the light is shined, the less luminosity it has. While the direct light source can be seen easily from a distance, the surrounding area that is lit up is very hard to observe from a distance while the driver can eas... |
Because an air bubble can function and cause the same problems as a clot formed of other materials. Collectively, it is known as an embolism and can be made of things like clotted blood, fatty tissue, or even an air bubble. The principle is simple, the air bubble travels down the blood vessels, which get progressively ... |
Many answers here are misguided. Think of your body as a machine. When it's cold out it's occupied trying to warm you up. It pulls resources away from other areas for this. At body temperature, the cells responded with a sophisticated defense, sending out warning signals to uninfected cells around them. Those cells pre... |
It can be done, with proper supervision. See the story of Angus Barbieri... URL_0 Fat isn't a complete source of everything we need. It is great to supplement an insufficient supply of food but not enough to completely replace all food. We would lack vitamins and minerals, etc. They can. They just don't. Also you need ... |
The larger bowl games (Rose, Sugar, Orange, Peach, Cotton, Fiesta) are traditionally given to the champions of each conference. For example, the Rose Bowl is traditionally between the conference champions from the Big Ten and the Pac-12. Each one is different, some are conference champ vs conference champ, while some a... |
On the one hand, modern liberal democracy is regarded as "the end of history", with no other system to follow it. But it's as arrogant as it sounds. The ancient Greeks observed *anacyclosis*, a constant cycle of tyranny-oligarchy-democracy. Tyrants eventually die or get overthrown by their inner circle of advisors, who... |
This just my guess but most animals try to climb on to stuff so they can see more. That way they can see predators that might come and attack them, and find prey (if they need to) or other food sources much easier. Put simply, practice makes perfect. Goats are mountain animals. Mountain animals need to know how to clim... |
Driving is pretty taxing mentally, especially on a busy road you're constant at a peak awareness to make sure you don't crash and die. Mentally tired is something that can happen too. |
Acquired Savant Syndrome. There's only 30 or so cases ever known. This [Popular Science article]( URL_0 ) has some information but we're not particularly close to figuring out how it works, let alone being able to recreate the effect. There have not been confirmed cases of people getting in an accident and suddenly spe... |
our body is engineered to save energy where we can best... that means shutting down some organs to preserve energy. mental problems soon follow |
Iodine is necessary and deficiency cause goiter. A swelling of the thyroid (not thymus) in the neck. It was added to salt because it is something that every household has and regularly uses. Multivitamins are not something every family has. It should be recognized that this concept is decades old now from a time when t... |
Blood arteries and veins have a natural reaction to being severed that closes them up quite rapidly. Amputations is usually not considered a vital injury in first aid. There can be complications with infections but if done with a clean wound that is bandaged properly you lower the risk of infections. If you have damage... |
Acne is a "multi-factor" process. Dirt/bacteria from the environment isn't the only or biggest reason for acne. 1. Sebum 2. Androgen/Testerone 3. P. Acnes Bacteria 4. Keratin 5. Dead skin cells 6. Clogged pore First you have Sebaceous glands that release sebum which help lubricate your face for protection to keep forei... |
During conception you get 50% of your genes from your father and 50% from your mother. But you still have the same number of genes so there is 50% of the genes from each parent you do not get. Your siblings will have the same distribution of genes. So of the 50% of the genes you get from each parent your sibling will h... |
We forget almost everything. Most of what you learn is school you forget. Where you have been. What you did yesterday. Dreams are no exception. We remember things specifically useful for survival. Everyone recalls the details of an escape, or a close encounter with danger. Now is the time of my brain exultation. Paul A... |
I think the premise is false - just because it seems unnecessary, it's highly unlikely anybody is going to build needlessly curvy roads. Obvious factors would be geography (Sometimes cheaper to simply avoid a big rock formation than to go through it), land ownership (maybe they couldn't acquire the land, or again, it w... |
Some fairly clever origami. Each tissue in the box is folded both to fit better in the box and to have a little flap that connects to the next tissue. When you grab the top tissue, the next tissue starts to come too. Eventually the friction force holding the next tissue to the tissue that you are pulling is smaller tha... |
They were floppy when they were first created. If you look at URL_0 , which has the three most common sizes of floppy disks, the largest (8-inch) and the middle (5.25-inch) ones are housed in flexible plastic. By the time the smallest (3.5-inch) version, which is housed in hard plastic, came about, the name had already... |
Have you ever gotten into situations, where you are technically within a social group, but that group simply let's you tag along, while ignoring you completely? That's basically what shadowbanning is. |
Hi, I am a mod at /r/surveyresearch and a full time survey researcher. There is inherent noise in all data we collect. However, generally when people answer surveys they mostly tell the truth, this is backed up with empirical research where we have administrative data on the people surveyed and we compare what the part... |
Pilot here. Landing on water is quite possibly the worst scenario a pilot can face when a forced landing is on the cards. It's a lot worse for some aircraft than it is for others, but regardless of the aircraft your in, it's a bad day no matter what. The first problem the pilot has to worry about is water isn't solid. ... |
For two reasons. 1. Your mind associates the game visual with known experiences. So it triggers the memories of being blinded by sunlight 2. Your autonomic nervous system learns to react based on previous experience. So your pupils will constrict to minimise light intake. So for a split second you do actually see less ... |
Nazi salute (with straight right hand) was mandatory for civilians but optional for military. Soldiers mostly used traditional salute. |
I always assume it is advertising shorthand for "you don't want to know" For example: "Natural flavourings" sounds a lot better than ["beaver anal gland extract"]( URL_0 ) |
When you're in fight or flight response and your sympathetic nervous system is activated. Activation of the sympathetic nervous system actually shuts down saliva production, digestion and other rest and digest functions so you can use all your available energy to fight or run away. Some people think the nervous swallow... |
A lot of modern cars use LEDs, now LEDs don't really dim, they actually just flash on and off really fast to give the perception of them being dimmer. So, if the same bulb is used for the high beams, then the regular headlight brightness will be achieved by dimming. |
Natural juice is expensive compared to just high fructose corn syrup or powdered asorbic acid. You're not thinking in bulk. A difference of even 1 cent per bottle multiplied by 6.5 billion bottles of Coca-Cola sold annually makes a big difference. It mostly boils down to cost. Natural fruit juice is expensive and usual... |
Anyone can nominate someone for an honour, and a series of [committees]( URL_0 ) reviews the nominations. They make recommendations to the Prime Minister, who makes recommendations to the Queen. The exception is the Royal Victorian Order, which is given for personal service to the monarch. |
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