text
stringlengths
38
76.6k
This has been proven true before I saw a program about this URL_0 it's been done with quite a few species Only if being larger gave them a competitive advantage (or you selectively bred for size). The way insects resperate put a fairly hard limit on their size. So a higher oxygen concentration would allow them to grow ...
It doesn't. The radio waves are getting to you at the same speed they always are. However, they might not *all* be reaching you because there are obstacles in the way. Furthermore, the *protocol* that is transmitted over those radio waves is limited by many factors, including computation speed of the devices dealing wi...
When the body feels attacked, the brain releases endorphins to counteract the pain. If the pain is temporary or not real, this creates a high. Spicy food or running (runners high), are good examples.
The law will be different in different places. I'll consider English law. Murder. Unlikely you would be charged with this. The prosecution would need to have evidence you intended to deliberately kill the deceased with your car. Manslaughter. Also unlikely, because the requirements are more stringent than for driving-s...
It's not "glorifying" mental illness. Psychopathic characters are very often the villains. Even when they're not, they still end up getting screwed one way or another. Stories need some kind of conflict to be interesting. That means a protagonist and an antagonist. In the case where the antagonist is a person, if that ...
Grunting is common due to exhaling during a lift, which is what your suppose to do. If it's a strenuous lift then most likely you'll be squeezing your core muscles pretty hard which will force more air out of your lungs but it's a balance between not letting all the air out at once but yet keeping the exhale going cons...
There are different types of alcohol. Primarily: - Isopropyl Alcohol (aka rubbing alcohol...what a nurse rubs on your arm before drawing blood) - Methyl Alcohol (aka methanol...usually used as a solvent) - Ethyl Alcohol (aka grain alcohol...what people drink) You *definitely* do not want to drink the first two. What th...
EDIT2: A lot of people say it's too complex and includes extraneous information. I agree, and will edit this to be more nicely digested later. *Never let your brain drink and describe!* MORE EDIT: I hope everyone who comments understands that this isn't a perfect answer, and no answer is. There are a billion ways to si...
Fluorescent materials absorb ultraviolet light, and emit visible light. When matter absorbs light, it does so by jumping an electron up one or several energy levels. Then, the electron falls back down to its original position, emitting a photon every time it descends. So in a phosphorescent material, the electron jumps...
Like all bears, pandas have ridiculously large and thick bones which make them very durable in general. In addition, bears also have thick layers of fat which can absorb impact, as well as dense outer hairs which provide protection. These attributes combined with their huge muscle mass make pandas and other bears essen...
Not if there's enough land between it and the sea to prevent the sea from getting to it. Go dig a hole at the beach but away from the waves - that hole is below sea level but if there's no way for the sea to reach it, it will remain dry Large parts of Netherlands are below sea level, but dykes and levees along the coas...
~~First of all, "right to bear arms" is just taking a clause of the sentence, it fully reads "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed." So there's then the idea of there being a 'well regulated militia' a lot of gun...
The simple answer is, they don't store everything; When you go to a website a lot of things are happening and there is a lot of information and what not moving around behind the scenes, but what you see is frankly a relatively small amount of data. Archives work by taking basically pure text with some minor important f...
Swim trunks (and most clothing in general) tend to cling tightly to the body when the fabric gets wet. The mesh prevents the swimwear from clinging tight to men's "junk" in 2 ways: - first of all, since it's just an inner layer, the inner layer can cling without having as noticeable an effect on the outer layer - the h...
You certainly could. Shaking is adding energy to the system (kinetic energy) some of which will be converted into heat. You're not going to get anything significant from that though. It's an incredibly inefficient way to heat water. I imagine that this would be like trying to burn off a stadium-sized field of grass...o...
Water is blue; it's just an extremely faint color. Snow, ice, and foam are typically white because of the way light refracts when it hits the air/water interface. When there's a lot of those interfaces, a lot of light gets reflected and looks white. When there's just a lot of water or [ice]( URL_0 ) with no air in it, ...
I was under the assumption that we have potential cancerous cells produced every day but our immune system combined with cell duplication checks usually destroy them before they replicate. Our bodies have 3 "check points" during our cellular reproduction. These checkpoints must either be met or the cell's reproduction ...
It turns out that position and momentum don't really exist as separated concepts. The uncertainty principle states that: ΔxΔp > =h/4π What this really expresses is an idea known as *wave-particle duality*, that there is no such thing as a pure wave and no such thing as a pure particle. You, your car, your phone, and ev...
How we think about situations directly effects our personality. When we consciously have thoughts and make decisions we use words (usually sticking to one language, but sometimes interchanging). What words we have available, and therefore what thoughts we can describe, and how they get described is based on the restric...
> But, when the wires are grounded, when there's a high voltage, you don't need to wait for something to induce a current, a current will automatically be induced because of the ground, and that will trip the breaker. > If a device *is* on, and there's no excess voltage, then the ground is ignored, because the voltage ...
Kind of. Don't think of electricity like a fluid that flows. Think of electricity as tiny marbles (charge carriers) that live in a maple syrup bath where gravity can pull you either up or down. Some of the marbles like to travel up and some like to travel down, depending on if they are charged positive or negative. Lig...
The pipe is hollow and the plastic itself is thin enough to reverberate when struck. These reverberations are the sound that you hear.
For the inside de fogging- In a wool sock, 1 cup of cat litter and tie off the open end. Place on the dash. Turn up defrost heat and the wool sock and litter absorb moisture from Inside cab. Outside condensation- use wipers There is a drastic difference in air temperature between the inside of your car and the outside ...
[Phantom Phone Syndrome Wikipedia]( URL_0 ) is what you're looking for The best guess we have at the time is that there's a process called "hypothesis guided search." The easiest way to explain it is that our brains are always making assumptions about things because they've happened so many times that it doesn't need t...
[From r/askscience]( URL_0 ) TLDR: The liver is rather "simple" in its design in that it's made primarily of one type of cell, hepatocytes, while other organs are more complex. The liver is mostly composed by hepatocytes, those are rather simple cells, the more "simple" the cells are, the easier it is for them to be re...
It depends. Dollar sign (and similar) said to be written before so that one can't easily add digits to the front. And one can't add digits to the end because of thousand delimiters (and decimal point, yes). That is, changing $10,000 into $*9*10,0000 would be noticeable. In Russia, for comparison, we don't use delimiter...
So first you need an index. Pick a website, and make a note of all the terms on that website. Then follow links from that site to other sites, and repeat. Eventually you have a mapping from potential search terms to pages that contain those terms. But you can't just pull randomly from this index when someone searches f...
They are small and soft so it does not matter if you swallow them, bigger and harder bones might get stuck in your throat and couse pain
Interesting, because as an ex palliative nurse I found it quite the opposite when given the choice (quite hard/impossible if your a hospital worker under certain circumstances) When I was checking on patients or when they called for non medical related requests (think TV assistance, extra pillow, etc) and would ask abo...
I mean, that's a stylized fact. It's hard to literally write down a list of things about space and the deep sea that we know and literally compare their length. The point of it is that we can see space very easily and there are a bunch of giant light emitting structures (stars) that make it even easier. The bottom of t...
Think of that information as a destination. That memory has a physical location in your brain. To get there, you must follow a neural path. For whatever reason, that path is blocked one day. The memory still exists, you just have to find another way to get to it. This is where mnemonics are helpful. It's like a detour ...
The answer requires accepting that according to quantum mechanics, atoms and molecules can only have specific energies, called energy levels. You can be in energy level 0, 1, 2, etc, but higher energy levels require the atom to take in energy from the surroundings such as from heat. At absolute zero there is no heat, s...
Inbreeding does not always impact fertility. While it is bad for the genetics of a species careful husbandry of the breeding process can keep the genetics diverse enough to return to a functional population. Remember that genetically speaking all of the members of a species are related *a little bit*, including humans....
> I've heard of photons acting like a water droplet, bouncing up and down, riding it's own wave, but what is that wave? Ehh, that is a terrible analogy. Photons aren't particles and they aren't waves, they are actually something else which is easily modeled in certain circumstances *as if* it were a particle or wave. T...
Birds have built in [goggles]( URL_0 ). A special clear third eyelid. The have a second eyelid that acts as goggles its clear. Turkeys are the only one I've seen up close they chill out in the rain like it's nothing Others have already done a good job of answering your question, but I wanted to bring up an instance of ...
They make a lot more in advertising revenue than they pay out in prizes. Consider "Who Wants to Be a Millionaire?" In a 30 minute show there are probably about 3 competitors and time for about 14 30-second commercial spots. Each 30 second spot costs about $100,000, so that's $1.4 million right there without considering...
GPS navigation doesn't transmit any data at all. All it does is listen for signals from GPS satellites, and use that information internally to triangulate its own position. A data connection is only needed for downloading map data. Contrary to popular (mis) understanding, GPS satellites don't know where GPS receivers a...
Oooo, SCORM! My daily job and life's torment is this. SCORM is a "standard" for defining the communication between an application running on a client computer (which is almost always something in a web browser that uses javascript) and a server. It's specific rules and calls are built around the idea of learning and on...
Sounds are usually described by three characteristics - pitch, loudness, and quality (or "timbre"). Pitch is determined by frequency and describes how high or low a note is. Loudness is what it sounds like (forgive the pun - I simply mean loudness is self-explanatory). Everything else is generally categorized as "timbr...
One of the biggest things that most people desire is kinship or community. And, when you get a high five, you are basically affirming your membership in a community. This goes for pats on the back, cheers from across the room or any other action that basically states "You are one of us". It's a reward from your brain, ...
**EDIT: I may be wrong, see other replies instead** You're right, kinetic energy does not increase. Nor does angular momentum. Both of these quantities stay the same. All that happens is that the skater decreases her moment of inertia. Since angular momentum must remain the same, rotational velocity increases. Imagine ...
Ever walk down the street with a shoulder-strap back hanging off your right side? You're more likely to bump into someone passing you on your right because you don't have a full sense of the space you occupy. Now, when you're driving on the Right, oncoming traffic will be to your Left. By sitting on the side of oncomin...
I started to write up an ELI5, but I recalled a SciAm article that will probably do a better, and certainly a more complete job. Here you go! URL_0 (cracks knuckles) So, Uranium comes out of the ground in 1 of 2 ways: U235, which is really, really good at the fission thing but really rare, and U238, which sucks at fiss...
Actually, marijuana is not a drug itself. Marijuana is a plant that harbors a range of chemicals we call cannabinoids. We have identified more than 85 different cannabinoids. Marijuana may either induce or alleviate anxiety. Your brain already has cannabinoid-like compounds that it uses all the time. When marijuana is ...
The oldest living thing is a tree over 10,000 years old, and I don't think we know if it has a maximum life span. ,Aside from disease and natural disasters, man is the bighest threat to trees, and in fact a bristle cone pine over 9,000 years old was accidentally cut down in the 1970's when a tree core tool got stuck in...
It's a reflex action; our nervous system interprets a loud noise as something potentially harmful to our body, so it will take some protective actions without any conscious decision on our part. Some of the things you might do when a loud noise happens would include closing your eyes, flinching away, jumping, turning a...
If you breathe in irregular patterns, you'll end up yawning. Kind of like a reset to get you breathing properly again, as well as giving you more oxygen etc. And for some reason, they're contagious. If you see someone, or even think about yawning, you'll most likely yawn too, just like I did while talking about it. Thi...
> Why can't we set a program to randomly generate pixels We can. That part's really easy. > until it creates art? How would it know when to stop or what is considered "art?" You can program a computer to draw pictures by randomly assigning a color value to each pixel, but you'll most likely get something out that looks...
With marijuana legal, the sales of the follow medications would drop tremendously because marijuana is cheap and will get cheaper the longer it is legal. Muscle relaxers anti nausea pain killers appetite increases mood suppressants anxiety meds many more, but the above alone account for about billion dollars a year in ...
The easiest way to explain it, mainly from personal experience, would be that humans love patterns and being able to predict things. When people look at a bunch of random numbers and see a "pattern" it is because they want to see them and are trained to see them from birth. When you see something that is unsettling it ...
The mistake that led to Flint's toxic water was a water purification error that corrupted the actual *pipes* the water flows through. So the water itself can be perfectly clean, and on the way to your house, the pipes will leech toxic amounts of lead into it. In order for Flint to repair its water problem, it has to re...
Basically Turkey wanted to send someone over to the Netherlands to campaign, but the Dutch government was like 'we want none of that here'. Turkey said some not so nice things about the Netherlands and they responded by not allowing the Turkish campaign dude to land there with a plane. Turkish people in return tried to...
no, sugar spoils anyway, you would never store it as an investment. They own the future rights to buy sugar at a future date (hence why the contract is called a future). when that date comes, they *could* demand physical delivery. This might make sense if we were talking about Delta airlines and they had a jet fuel fut...
4 Years old post, but it is due to refraction and differences in air density apparently URL_0
These are contrails and they have more to do with the weather conditions and the altitude than the type of airplane. Jet exhaust has water vapor, as well as some small impurities like sulfur. The impurities in the exhaust will form condensation sites for the water vapor to condence forming drops of water. If its cold e...
Goosebumps are largely an evolutionary leftover in us relatively hairless humans. In critters WITH some fluff to them, getting goosebumps makes their hair stand on end. This poofs out their hair or fur and makes them look bigger. Since they do this during times of sudden emotion (especially fear), this comes in handy a...
Code doesn't "wear out", so bugs don't "appear" after a while. What happens is one of two things: * The bug was always there, but you didn't have enough data to make it apparent. * The bug is a resource leak and the program finally ran long enough to exhaust some resource. Often it is because the problem only appeared ...
Rhythm is important whether playing a solo or chords. Your dominant hand can do rhythm a lot better than the non dominant hand. Actually both hands require a lot of precision, but the picking hand needs more strength so people use their dominant hand.
Philosophically, you can't prove causality. Scientifically you can hypothesize causality and test for it. Causality can be disproven by showing that B happens without A (controlling for other variables). Failure to disprove it strengths the hypothesis that A causes B. You prove it through experimentation. You would be ...
Adults can survive on formula. Why do you have the impression that they cannot? Milk is high in fat to promote growth, but there's no reason not to think people can use a formula as adults. Isn't this pretty much what soylent is? They totally could. And do. There are numerous liquid based nutritionally complete meal su...
I think it is because when you are listening to someone sing (or talk,...), you hear the sound conducted through air, however when you hear yourself, not only do you hear the sound that goes through air, but also through your own body (mainly bones). And since bones have different sound properties than air, the pitch i...
In the editing process, ideally once the movie has what they call "picture lock, (meaning all the cuts are in place but the special effects havent been done yet) they find each surface where there are reflections and paint them out. One common way of doing this is by "clean plating," which is when visual effects artist...
You could read [this article about the soap opera effect]( URL_0 ) but I'm going to eli5 this, too. Newer HD tvs have a pretty remarkable ability to transform shows that are shot in fewer frames per second (that's most shows) into more frames per second by predicting/inserting extra frames. A few important things to kn...
160 if you allow people to do whatever they want, but you can make it work with 80 if you force women to wait longer to have their kids. [Source]( URL_0 ) Edit: 160 will work for 200 years, but you'll want 5,000 if there won't be any new arrivals for a long time. It's quite hard to say, because you can't eliminate the ...
In short: the internet of things is about putting a tiny computer and internet connection into everyday objects. This lets you do cool things like program your coffee maker to start brewing coffee before you wake up, or having your bed record how well you sleep and sending that information to the fitness app on your ph...
A Karat (with a K) is a measurement of purity of gold, on a scale of 24. 24K gold is totally pure - basically every atom in that piece is gold. 18K (very nice jewelry) is 3/4ths gold, and the other 4th is another metal or metals. 12K is 1/2 gold, and so on. A carat (with a C) is a measurement of weight used for preciou...
To understand this, you have to know what a telomere is. Humans have these things in their DNA called telomeres. They are long repeated sequences repeated over and over found at the ends of our chromosomes. Big endcap buffers of repeated genetic code. The human telomere sequence is TTAGGG. As our cells divide and our c...
It is about making the loans attractive enough that people will want to give money for them. Loans for education are very risky - there is no tangible product to repossess and even if you do declare bankruptcy, you retain 100% of the benefit of your education. You could, theoretically, run up a $200k tuition bill and d...
Because the brain stores more information during periods of novelty and newness which stretches your perception of time. It's also why you store more memories on vacation than you do in your regular boring daily grind.
Goosebumps or piloerection (fun word) is a response of your body to low temperatures, the idea is that it makes your hair stand on end so that it can trap more air underneath it to create a better layer of insulation. Unfortunately because humans don't have a thick coat of fur like a lot of other animals (unless you're...
Sometimes, nothing. Women pass out occasionally. However, women usually get a huge flush of endorphins during childbirth that help...slightly...to numb the pain, or at least make her "not care" (in quotes because, you know...it still *really* hurts). As humans have evolved, our hips have gotten narrower, and our infant...
Plasma is the next one after gas, it's when there is enough energy that the nuclei of the atoms separate from their electrons. The sun and other stars are basically big balls of plasma hydrogen and helium
This is due to the anatomy of our brains. Smells are processed by the so-called olfactory bulb, which is located in the nose and directly connects to the amygdala and hippocampus, the brain regions associated with emotions and memory. This is why smells are so strong at triggering memories and emotions.
Here are a few basic reasons: 1. Not everyone hates ads. People will watch the trailer for a movie they like or read an article about a gadget they want to buy (often those are also paid advertisements). Lots of people enjoy certain ads and buy products based on them. 2. They create brand recognition. I bought my walle...
GPS is only a one-way radio signal. The satellites broadcast radio signals out to GPS recievers but there's no communication back the other way. A GPS device can figure out where it is by passively listening to the signals from the satellites. If that device wants actual maps rather than coordinates, it needs to have t...
Back in the industrial revolution, we made machines that could work, but they were very simple machines by our modern standards. They could not work themselves. They needed people to work them. So when you have a power loom, a loom could make way more fabric than a person could, but that loom needed a person to run it....
They are derived by what someone is willing to pay for it combined with what someone is willing to sell it for. One is the "ask" and the other is "the bid". The price you see for the current price of a stock is the last price paid in a successful transaction. So...pretty much any factor can go into how people rationali...
Human circadian rhythms are on approximately 90 minute cycles. This means when you are asleep you go through progressively deeper stages of sleep, until you have a period of rapid eye movement (REM) sleep, and then the cycle repeats itself over again. Your body knows when the cycle is resetting and goes back to the ver...
It depends entirely with *how* it was wiped. If all the companies that lent the money just had to deal with the loss of writing off all the debt, there would be a massive financial collapse including all the major banks. People would no longer be able to get credit cards, car loans, or mortgages as every lending instit...
Yes yes yes! And also no. (This is a long reply, you have been warned) So it can be difficult to exactly judge if an animal is suffering from mental disorders because they can't communicate with us, *however* there are certain things that some animals will do that others of the same species won't. Many people like me (...
The [Screen Actors guild rules]( URL_0 ) leave it up to producers and actors to negotiate that on a case-by-case basis. ("The Producer is required to honor individually negotiated billing as described and agreed upon in the performer's individual contract") Usually, they are towards the end of the title credits. This i...
**PART 3 OF 3** * Liking Everything is easier in life when people like you and that’s no different when it comes to persuading people to do anything. Common sense would tell you that people don’t want to buy things from someone they don’t like. And who do people like the most? Well… People Like People Who Remind Them O...
Three things that I can think of. First, a graphics driver is very complicated and can do many things in several different ways. It tries to guess about the most efficient way to accomplish the things a game asks it for, and it's usually correct, but sometimes it may guess incorrectly and slow down the graphics card. I...
No. That higher physical performance under stress is the result of muscle inhibition. Which basically means that under normal non-stressful conditions, your brain and nerves don't allow your muscles to operate at their full potential because you could pull your own body apart. (Literally, you could flex your own muscle...
Something nobody has mentioned yet is that bullets are generally made of a much softer metal than the barrel. The barrel is steel (very hard), and the bullet is lead, which is extremely soft. It may be jacketed with a copper alloy, but those are also much softer than steel. A soft metal has a lot of trouble damaging a ...
Different needs, different means. When playing a video game, you have hardware ranging from a $300 console to a $2000+ computer rendering (usually) either 30 or 60 frames per second in real time. Games are designed around those limitations, so that the graphics don't overwhelm the hardware and that framerate can be mai...
Because an outdated OS version is a potential threat to security. If you're no longer receiving patches, you can be targeted by new exploits. People are essentially blackmailed to buy a new phone even when the old phone's hardware is fully functional. There's nothing except high end games that an old S4, or even S3 can...
Would you rather have a fight with 5' or 6' guy? You picked the 5' guy right? This comes from a very basic assumption that the bigger something is the more powerful it is. And it's the same between humans, dogs, lions and all the other animals.
The average phone battery is around 4 volts. You won't actually feel anything up to 40ish volts. That means you'll have to drop four or more car batteries in a bathtub with you to even begin to feel a shock. To put that into perspective. It's much easier to kill a person with a car battery by bashing their head in with...
A lot of people prefer mobile, if you do use computer download RES as a browser add-on. It adds a lot I was thinking this just yesterday when I tried the computer version. It's a sloppy mess comparatively
(the one that has worked best for me so far) Depression is like swimming in very heavy clothing. It takes all of my energy to resist sinking so that I can keep breathing (i.e., take care of my most basic needs). There isn't enough energy left to move in any direction. Sometimes I can summon the energy to call for help;...
A precise answer probably wouldn't be really eli5 but basically there will be some chemical signal if the embryo isn't viable on a cellular level. When cells die they release a lot of different chemicals that signal for other cells to recover and destroy the remnants. Also, when the embryo dies it stops secreting hormo...
They put a little spike in the glass frame that, when triggered, shoots into the side of the glass
The United States is enormous, so even if the average is not as good as other countries' we are still talking about millions of people at the upper edges. Secondly, most educational rankings are for 18 and under education. The US has an extremely prestigious university system. Finally, the US is generally ok with educa...
Your body produces an enzyme called lactase in your stomach. This is needed to process the lactose in the milk. If you drink more milk than your body can supply lactase to process it, you'll feel bad.
A mixture of the oils and residue on your skin and in the air such as dust, mainly. It's similar to how you smudge a window by touching it and can never seem to wipe it off with just your fingers. It'll take longer for it to become noticeable than with glass so it'll seem like a mountain of dirt you need to scrape off ...
It's not, the slogan, "Breakfast is the most important meal of the day," was invented in the mid 19th century by Seventh Day Adventists James Caleb Jackson and John Harvey Kellogg to sell their newly invented breakfast cereal food stuffs. Yes, *that* Kellogg. Then the bacon market jumped on that bandwagon, got 5,000 do...
The energy you get from eating is actual chemical energy you need to live while the 'energy' you get from sleep is basically just you feeling refreshed because your brain got to rest a bit. Besides that after eating (a lot) you often feel a bit lethargic which seems contradictory since you just got more energy but that...
Remember, there are 2 sides to every web browsing session. There's your computer then there are the computers you are connecting to. Facebook IS tracking you, but they're not doing so from your computer they're doing it from the other side of the transaction. What's happening here is this. Facebook gives your browser a...
The difficulty of prosecuting a crime years after the event is absolute pain in the backside. Do you recall what you had for breakfast a week ago Do you recall what you had for breakfast a week and 21 years ago. Human memory is fragile. that's the first point Then we get into the logistic of a trial 20+ years after the...