text stringlengths 38 76.6k |
|---|
You're describing the phenomenon "déjà vu". Déjà vu can be a feeling that you've already experienced a certain situation before, or that you've been in that exact moment previously, without seemingly ever having an actual memory of that moment occurring. Some scientist have theorized that déjà vu is a symptom of good m... |
"Pushing" something is actually the same thing as a wave going through the object at the speed of sound in that material, like a pressure wave. When you push one end of an object, one atom feels the force, then transfers it to the next, and the next, and the next at a particular speed. This speed is much, much lower th... |
Coincidence. URL_0 Africa is named after the Roman province of Africa, meaning "land of the Afri". There are several possible sources of the word Afer/Afri. America is named after the Italian explorer Amerigo Vespucci (latinised to "Americus"), who showed that America was a new land mass and not part of Asia. "Australi... |
That is actually a very common method, although the buyer doesn't need to be in on it. The seller sells a product for X dollars but claims it was sold for Y dollars. They will change the advertised/real price often in order to make it hard for any proof to surface that the sell price was a faked number. The changes are... |
It's a misunderstanding of Russel's teapot and the burden of proof. Russel's teapot is a claim that there exists a teapot, floating somewhere in orbit between Mars and Earth. Russel argues that it's not upon others to disprove this theory, but on himself to prove it. Thus, in reality the statement should read : "You do... |
The expiration date from the milk is no longer relevant. Your cake will have the same shelf regardless of whether you used milk expiring tomorrow, or milk expiring much later, because you have killed all the bacteria that were going to make the milk spoil. I worked at a food production facility and it's cool how much e... |
The tendon from the wrist lies partially below the tendon for the middle finger. The middle finger position restricts the movement of the ring finger. If the middle finger is curled up (tendon fully stretched), the ring finger can't move. If you leave your hand flat on the table and lift repeatedly the ring finger, you... |
A well disciplined square formation was absolutely very effective against cavalry (although by no means immune) but only if done right. First, there's no flank or rear to attack, which is the ideal tactic when using cavalry. In a square formation, all your weapons are facing outward. Second, horses have the same self p... |
Of course it is possible. Desert status is just talking about the amount of precipitation an area receives. If it starts getting more precipitation for whatever reason, it might no longer be considered a desert. Just like how huge areas are *becoming* deserts due to human influence and climate change. |
Your brain thinks there is an immediate danger and tells your body to suddenly release loads of adrenaline and activate a part of your nervous system called the sympathetic nervous system which deals with the fight or flight response. This has the effect of increasing your heart rate, making you more alert, making your... |
Mud is not a chemical reaction. It's just adding water to sand. The water creeps between the sand particles making them move around more easily. The more water the more "fluid" it becomes. Baking cookies is a chemical reaction where different ingredients bind together which creates new chemicals. The baking itself remo... |
It's literally a sponge, but for paint. The paint roller is full of tons of little holes (most you can't see) that the paint goes into. This is why most sponges (and paint rollers) are very squishy, they're mostly air. |
Some people, while well qualified for a position are horrible at negotiating salary. If a company can get a quality candidate and save money, it's a win-win situation for them. Salaries in the profesionnal sector can change a lot from person to person within the same company. The employer wil try to get everyone at the... |
Sundays landing is just one of seven successful landings although it was the first landing on land during daylight so it makes for impressive footage. The landings is just one step towards cheap reusable rockets. Previously we have intentionally crashed the rockets after their use as there have not been any way to brin... |
I would suggest the weakest point in the the whole "blood-containment" system that is your body would be the hole in which the blood was inserted. Most likely the needle would pop out and it would bleed there. But if you did just force more and more blood in, it would cause high blood pressure. Essentially an "acute hy... |
Your digestive system is largely contingent upon literal pounds of bacteria you have in your gut, which help to break down foods and extract maximal nutrition. It is however, not a lovely home, but a battlefield against invading and malignant (to us) bacteria, fungus, and viruses. The population of "friendly" bacteria ... |
If you own X% of a company, that would grant you certain rights and privileges in guiding that company, depending on how the company is structured. Typically, you'd have some say/vote in how company runs although whether that's any actual power depends on how distrubuted the ownership is... if one other guy owns 90%, t... |
I have anxiety and I can't really do one thing at a time, without going nuts, so I bounce my leg as an activity to add to things that I'm doing. The theory in people with AHDD wiggle and fidget to keep their frontal lobe awake. I assume it's similar in that keeps certain parts of the brain activated. apparently people ... |
Adhesives work by a couple of mechanisms, but there's two basic ways to get things to stick together with glue: * Sticky substance that bonds to both surfaces * A chemical reaction that welds both surfaces together The first is accomplished by using a substance that in its initial state is liquid because it's mixed wit... |
In my native language, which is Czech, the words we adopt from other languages get their gender based on how they sound to us, which is usually based on its ending. For example the word Internet is of male gender because it sounds similar to other male words (such as "kabinet"). Another example can be the word "premisa... |
The fact of the matter is that "trickle down" or "supply side" economics have been hyped since Regan took office 40 years ago... and it DOES NOT work. The belief that businesses will invest in equipment/create jobs because they have lower interest rates or lower taxes doesn't hold water if the demand isn't present, too... |
Unlike with DNA, there is no big database of dental records. So, in order for identify to be verified through dental records, we actually first need an idea of who the dead person might be. This can be based on missing persons files or tips from the public or other items found on the body. When they have a name they th... |
Fog is just clouds at ground level. The elevation that water vapor precipitates is dependent on temperature and humidity. Most of the time, the ground level humidity isn't high enough. Sometimes it is. There is no difference. Low lying clouds are called fog. However it is the exact same thing and behaves the exact same... |
Seeing blood extremely stresses them to the point of their brain shutting down to relieve the stress. It's sort of like jerking your hand away from a hot surface. It's an ancient reaction to save your life from aggressors. It's less likely to be killed by an animal or another human if you faint: you won't be perceived ... |
Well, you mainly need to understand the politics of domain names and ICANN. ICANN, or the Internet Corporation for Assigned Names and Numbers, is the organization that oversees the internet in general through two primary tasks, IP address allocation to ISPS, and DNS. They "oversee" DNS in a bit of a weird way, here is ... |
Extra-virgin olive oil EVOO is the highest-quality olive oil and is extracted from olives through a process called cold pressing, which means the oil is removed using only pressure and was not heated over a certain temperature. This is the best way to keep all of the good-for-you antioxidants and monounsaturated fats i... |
I'm going to assume you largely mean the U.S. , since responses vary greatly by country. By far the biggest change was the introduction of the Dodd-Frank Act (for now, anyway. The current administration is looking to repeal it. If it does get repealed, we'll essentially be back where we were just before 2008). DF is a ... |
I used to have a big excel spreadsheet and would shout to the office 'someone give me a number between 2 and 16,595' When you submit your information, it will be given a record with a number. They will then use a algorithm which is universally declared 'random' to generate a number from 1 to the number of people who en... |
Bluetooth is essentially marketing. It branded a specific radio frequency and standardised how devices talk to each other. The actual technology is nothing special. |
Your parents share something like 99.8% of the same DNA, so the 50/50 split is only in the remaining 0.2%, not the entire DNA sequence. To put it in perspective, your parents are a pair of Ford Focuses, red and blue. A Chimpanzee is like a Ford Fiesta, which is 98% similar to a Focus. You are a purple Focus, 50% mom, 5... |
Nope. In open ocean, a tsunami passes just like a long wave. You wouldn't even notice it if you were on a boat. |
Your senses aren't like a completely clear window on the world. Think of it this way, you're constantly bombarded with all kinds of sensory input, so much that would be way too overwhelming to process it all consciously It's like, right up until you read this sentence, you weren't really aware of the feeling of the ton... |
You only take naps when you _know_ you're tired and ready to sleep. Night sleep is compelled by schedule and has enough "downside" to failure. If you miss a nap it doesn't matter. If you don't need a nap, you don't take one. But if you miss a night's sleep it's a formula for disaster. So you get a little performance an... |
The charging base has an electromagnetic transmitter, and in your phone is a receiver that is connected to your battery charging circuit. basically, they are both magnets. Electricity and magnetism are related, and you can use the difference of potential and oscillation (think of it as a magnetic vibration) to generate... |
iPhones (and other similar smartphones and tablets) use what is called a capacitive touchscreen. This means that it uses the electricity flowing through your body to complete a circuit to detect touch. The styluses that work with these screens are designed to have a conductive surface to complete that circuit. Pencil e... |
Venom antidotes (like spider, snake, etc) are antibodies to that PARTICULAR venom. The way they get these antibodies is this: they inject small amounts of a particular venom into a subject (horse, for example). The horse has a reaction and makes antibodies to the venom. The antibodies are ONLY to that venom, they are v... |
> "It's been found that if you ask people what makes them laugh they'll talk about jokes and humour, but we laugh most frequently when we are with other people - and hardly ever at jokes. It's a social emotion and we use it to make and maintain social bonds." > "Laughter is a non-verbal emotional expression and these s... |
There is no method. If the drug or metabolites has a nitrogen or phosphorus in usable form, it gets ate. Otherwise no. The bacteria and other higher order life enjoy phosphate and nitrate primarily, (NO2, NO3, PO4....), ammonia (NH4) and other stuff like that. Some of the drugs may be eaten by higher order life forms, ... |
An answer of sorts was provided by a linguist called Charles Kay Ogden in 1930. He created a version of English called "Basic English", which contains what he thinks is the minimum number of words a foreign student of English would need to communicate. Basic English has a core vocabulary of 850 words, which he thought ... |
Gerrymandering is drawing district lines in a way that benefits one person or party at the expense of others. [Here is an image that explains it very simply.]( URL_0 ) Gerrymandering is a method of drawing voting districts in a way that favors the preferred candidate. Relevant WaPo article: URL_0 In the simple case you... |
They can, because that is roughly what liposuction does. However, liposuction is expensive, dangerous, and really doesn't address most of the health issues relvant to obesity. The health problems of obesity are generally due to the deposits of fat in places where it's not immediately apparent, like inside major arterie... |
Evolution often creates the simplest system that works the most efficiently. In order to hear, your body has a complex series of physical reactions that happen in your ear transcribing sound waves. The last stage of this transcription, which converts the sound wave messages into neural signals, takes place in fluid-fil... |
Accoording to [Wikipedia]( URL_0 ), Hughes phenomenon states that when you have a dataset of fixed number of samples, let's say 1000, then the more dimensions the samples have, the worse the system will be. For example if you samples are 2 dimensional (for example points on Earth surface), you'll be able to train a dec... |
Insects don't need as much oxygen as mammals, experiments have shown ants to live for weeks in sealed water-filled test tubes. Some ants can also form large floating rafts and simply float on top of the flood. Some will head to trees and high ground, and many will simply drown. |
Plants in the wild are naturally trimmed by animals that eat them. They also don't grow to 100% potential, which is generally the goal of any human-cared-for plant. |
Not friction but surface tension. Water stick very well to itself and to other surfaces, such as the side of your glass. |
I don't know much about the Hitler thing that other guy is talking about, but an important distinction for your question is that compared to America and the UK, Germany has extremely difficult driving standards. This is just a quick jump away from the idea that if your driving standards are higher, you will have less d... |
Not the full answer by any means, but our stomach contains oxytocin receptors. Oxytocin is a neurotransmitter that releases when we have comforting physical touch. In essence, by overeating we get a big food hug. There are likely individual differences in the size of food hug one can get, as well as how much needs said... |
Nuclear weapons tend to be much, much larger than conventional explosives in terms of output. The Hiroshima bomb was a single bomb equivalent to 15,000 tons of TNT. That's a _lot_ of TNT. During the Cold War the US and USSR fielded weapons in the tens of _millions_ of tons of TNT, per bomb. You simply _can't_ accomplis... |
It's not taxing the robot exactly, as much as it would be taxing *for* the robot. If a company fires people to move towards automation they would tax the company for the using the robots. As best I can understand it: A company pays a person $5 to produce a thing the company sells for $10. Then the government taxes the ... |
It follows from a fundamental property of exponents: x^n+1 = x & middot; x^n Let n = 0. Then: x^1 = x & middot; x^0 x / x = x^0 (when x ≠ 0) 1 = x^0 |
Beer going bad is generally caused by getting hit by the sun if it's bottled beer. Canned beer will be fine in a warm car. If you have a few six pack bottles in your car just throw something over them to keep the sun off. |
Because the adhesive on the sticker only remains sticky when it is in a semi liquid form. Once it is too cold it becomes too hard to stick on anything. Alternatively, frozen surfaces also usually have moisture on them. When those surfaces get cold, warmer moisture in the air condenses onto the surface and freezes, and ... |
Because for the most part they are not important in current affairs section of news in Europe or the Americas. Their industries and markets are too small to be of any major concern. |
Vitamin D is made in your skin. When you expose your skin to ultraviolet light, something called “photolysis” happens to a chemical called 7-dehydrocholesterol, which turns it into previtamin D₃. This happens on the outermost layer of your skin, called the epidermis. This previtamin D₃ is rearranged into vitamin D and ... |
You know that thing you do when you're thinking to yourself and your move your mouth as if you were speaking, but without actually speaking? That's called [subvocalization]( URL_2 ), and you do it even when you don't want to. Whenever you read, whenever you think to yourself, you're subvocalizing subconsciously. When y... |
Part of the canning process is heating the cans after they are sealed. The heat kills any bacteria present in the contents, and the sealed can prevents any new bacteria from getting in. As long as the can isn't compromised most canned goods remain safe almost indefinitely (although many won't taste good after a long ti... |
My father and uncles are huge tennis fans, as far as I remember balls are filled with gas (dont know exactly what) and the container is pressurized so the gas wont leak and the balls stay "firm". This is also the reason pro tennis players usually have more than 1 tennis ball at all times, bouncing it to the floor to "f... |
The spice irritates your mucus lining, causing the mucus to move either down the throat or out your nose, clearing your airways for easier breathing. It's an irritant, and your body responds by producing mucus to envelop the capsaicin to make it easier to expel. I think the most plausible explanation is that the capsai... |
Caribou are adapted to live within the arctic circle, where as elk tend to live in more deciduous areas. The diets of these species are quite different as well, mainly due to the availability of vegetation in their respective habitats. Here is a list of physical differences Caribou * Max weight (male) 350-400 lbs * Bot... |
When you hear "$500M in foreign aid", we don't just hand them a blank check. Most of that money is required to be spent on goods from American companies. In a way, it's a way for the government to improve our exports & help keep factories and farms running. Secondly, it's a lot easier to help keep a country stable by m... |
"Science" is a research activity whereby new knowledge is identified. "Engineering" is applying knowledge to solve a specific problem. For computers, this is often seen as two fields: "software engineering" and "hardware engineering". If we're talking university majors, Computer Science is more software based with a bi... |
I was having the same conversation with my physiotherapist last week. The way she explained it was that just about every activity you can think of recruits muscle groups all over your body. Lifting, running, walking, bending, even standing all involve various combinations of back, core, leg and arm muscles. What you're... |
As a mathematician I get this question a lot. One can say that there are two parts of mathematics. The first is applied mathematics, which is revolutionizing fields from biology to computer science to finance to social work. The second is pure mathematics, or the development of mathematical structure, theory, and proof... |
Induction is like based on past events, like statistics. It can be weak or strong E.g., It rained last time I went outside, therefore if I go outside it will rain. (weak inductive) The wire heated up the last 1 000 times I put current across is, therefore it will heat up if I force current across the wire. (strong indu... |
You meet someone. You talk to them. You do things with them. You do more things with them. You develop special things you only do with each other. You do things together until you decide you want to do things with other people in the future or not. Then maybe you get married or break up but those are different eli5's. |
The old Pioneer probes showed systematic and unexpected deviations in their acceleration as they left the solar system - they slowed down a bit faster than was predicted. People were very excited for a few years, thinking perhaps that it was an effect of dark energy or some other clue about physics working differently ... |
Bacteria lives in your sweat, and bacteria produces the smell. Antiperspirant deactivates/clogs up your sweat ducts. No sweat = no bacteria = no smell. Most antiperspirants also have a deodorant, which covers any smells that might remain with its own smell. There is usually aluminum in antiperspirants. This causes your... |
There's actually [quite a few]( URL_0 ) out there. People don't focus on it as much as sight and hearing because we use those to orient ourselves in the world a lot more, but there are definitely conditions that will temporarily or permanently reduce your sense of smell. I know someone who was born with no sense of sme... |
For things like tax purposes they can't say they lost $10 if the item was never sold, but instead stolen. If insured: they will only cover the $1 Edit: for extra clarification -- if the insurance company did pay them $10 for that $1 item, at that point the insurance company would be paying into the profit center of the... |
Well, for one thing there HAS been a large number of successful social networks that have risen up since Facebook became popular, like Twitter, and Instagram. If you look at more specific services that exist to fill a certain niche, there's tons like Snapchat, LinkedIn, etc. that have plenty big enough userbases. Each ... |
Well a non-scientific answer would be that when you are meditating, it is usually accompanied by some type of deep breathing exercises. In turn, this brings more oxygen to your brain, claiming you and slowing down your whole central nervous system. When you are relaxed and able to maintain this state of consciousness, ... |
Some people did actually talk like that. Specifically the very rich of New England. It’s called the transatlantic or mid-Atlantic accent. It was specifically taught to kids in boarding schools. Not naturally occurring accent, but one developed to sound kind of British and kind of American. A little bit of both. accents... |
I've never heard of this ever happening out side of video game titles. The reason why it happens in video game series is because the generic titles of "Series+Year" was started with EA and when a new studio wanted to make similar sports games they needed to differentiate their version from EAs version (for example NHL ... |
Eating spicy food releases dopamine in the brain. The body *really* likes dopamine (that's what *actually* causes the “high” from drug use), so we eat more food with more spice to release more dopamine. Plus, u/winterdust is correct in his closing assessment, though I don't know what that has to do with enjoyment as su... |
Descartes said it pretty well. "Cogito, ergo sum" "I think, therefore I am". The fact that you are able to think and put together thoughts is proof in itself that you exist. You do not have proof that your body exist however and your senses might just be a simulation. However you do exist in some form or another. It th... |
A drawn line is just a visual reference. It makes it easy to check if your line is still straight without using complex visualisation. It's easier to draw a line once and simply compare rather than continually imagine a line whilst trying to cut something. Drawing perfect circles is difficult because the human body doe... |
> but assuming that one could just accelerate infinitely in space if you would simply assume this than reaching speed of light would be possible. but accelerating infinitely is not possible. to accelerate an object that has some kind of mass to c(speed of light) it would take an infinite of energy. since we can't provi... |
Nothing at all. It's a really strange experience... You could try it; just buy a bottle of demineralized water. But don't drink a lot of it because it binds a lot of minerals. When entering your body. |
**The^easy^version**: when you remember something there are 3 things that happen, you obtain the memory, you connect the memory with actions ( this can me a smell, something you see, something you hear) and you store it in the brain. For instance, if you always do something in a specific order. Take myself for an examp... |
It's hard to say specifically, since you do not refer to a specific incidence. However, several people have been arrested for distributing boxes that *have* Kodi, not because Kodi is present but because they have also pre-loaded software on them which features unlicensed (and thereby illegal) forms of content. |
In some states it is against the law to run casinos, which have games-of-chance, and the way the laws are written also apply to lotteries. In some of those states, if you can argue in court that it is not a game-of-chance, it is a game-of-skill, then ok, it's legal. So they attach a math question to make it a game-of-s... |
Just as all dogs are descendants of the wolf and (almost?) all the Brassica (broccoli, cabbage, cauliflower, etc.) species descended from three ancestors, all the citrus fruits are descendants of hybridization of three or four ancestors, which in turn were selectively bred over centuries by humans or inbred through geo... |
Your muscles now can lift 100 Newton (10 kg x 10 m/s^2 ) . On the moon you would be able to lift also 100 Newton, but that corresponds of a 60 kg object (60 kg x 10/6 m/s^2 ) because Moon's gravity pulls down that object 6 times less than on Earth. |
Could be that the user isn't actually triggering what appears to be a refresh, rather you're seeing a slower system going through its startup routines, checking the desktop shortcuts' file associations, for example. |
Most of the world has a 220-240 V / 50 Hz (All of Europe, most of Asia, most of Africa). America (US, Canada, Mexico, central america and a couple of countries in south america) have 110-120V/60 Hz. When changing from direct current to alternate current (DC/AC) two standards settled. In America, 60 Hz and in Europe AEG... |
First thing: What is gravity? Gravity is indestinguishable from acceleration. Situation 1: If you got into a lift (an elevator if you're American) in a hotel on earth and the lift did not move. Situation 2: You are in the same lift, but being towed behind a spaceship which is accelerating , going at 9.8 meters per seco... |
Think about a balloon. When you inflate it, it expands at all points on the rubber not just from one point. If you draw a few dots on it, it's a bit easier to visualise from A < - > B < - > C to A < - - - > B < - - - > C |
Unlike other "scientific debates" the impacts of climate change are heavily dispersed, unequal, and most importantly, methods to reduce the rate of climate change are extraordinarily expensive. Major oil corporations still employ hundreds of thousands of workers and have revenues that are larger than many countries. Po... |
Almost everything is made up of carbon compounds. That is carbon bonded with some other element/elements.When you burn something the bonds are broken and carbon residue is left which is black/brown in colour. (That's the most basic way to explain it. It is way complex if you really get into the details) |
Space isn't dark. Space is *empty*. You only see colors because light from the Sun is reflecting off of stuff here on Earth, or stuff in the atmosphere. But space is basically just emptiness, so there's nothing to reflect off of, thus it just appears black. > Shouldn't it get lighter the closer you get to the sun?? The... |
This varies from place to place and from time to time. Going up to 12 is pretty common, but stopping at 10 is also fairly common. Eleven is easy, 12 is useful (inches in a foot), 13 is hard and of no more use than 14+, so 12 is a good stopping point. For the most part, you can understand most basic arithmetic with the ... |
The smallest star discovered (2MASS J0523-1403) is only slightly larger then Jupiter. It was crazy the process the scientific community went through in order to classify it as an actual star. It will certainly be a Neutron star of some sort. That are small and incredibly dense; almost but not quite as dense as a black ... |
The costs of buying a house (inspection, closing costs, realtor/broker costs, moving costs) are prohibitive in the short term. It would be cheaper to rent in order to avoid $10,000-20,000 in additional costs. After ~5 years or so, though, those initial costs are paid for and your equity in the house begins to build tow... |
Bacon shrink when you cook it because the fat turns to grease and oil which causes parts of the bacon to decrease only where the fat is so the meat gets all ripoli because where the fat is usually lengthwise of the bacon shrivels which crossed the whole thing they get wrinkly |
They contain a radioactive element, tritium. That excites the gas inside and glows green. They usually glow for about ten years and you will need to get them replaced of you still want that feature. Probably because they use Tritium (Hydrogen-3). The radioactive tritium decays by emitting an electron (beta decay) which... |
Dissonance between your "fantasy" and your morality. See, when you are searching for porn generaly you start with some classic fantasy, but at the same time of your excitation become bigger and bigger, you drift to some more exotic fantasy. It's basically because your "reptilian brain" (not sure if it's correct in engl... |
Modern operating systems let you run multiple programs at once, but you only have one pool of RAM that they all have to share. The way that works is that when a program wants memory, it asks the operating system for however much it needs, and the OS finds a block that's not being used and loans it to the program. When ... |
In its simplest form, a memory leak is what happens when a program doesn't discard memory it isn't using anymore. Think about it like a bookshelf. Every time your program needs some memory (a book), it goes and gets it from the shelf. When it's done with it, it frees up the memory (puts the book back on the shelf). If ... |
We live a long time, and many modern diets are rich in sugars that bacteria love, and they poop acid all over our teeth, degrading them. Animals can't often get the same, sugar rich diets, often don't live as long for harm to accrue. But animals *can* have tooth decay. Often, an animal with bad teeth is an animal that ... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.