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Why is spicy food so prevalent in Asian cuisine but not so in western cuisine? | Come to the southwestern United States where we eat lots of mexican and Latin American food. Many of us like it hot. I'm white as fuck but spicy food and hot salsa on some tacos is comfort food for me", 'Is there something I am missing with spicy food? Every time I eat spicy food my mouth is burning and I can’t even ta... |
Does Nebula actually look like that or is it just the camera? | What I want to know, let's say I'm in a space ship, and I don't care about distances or the objects still being there Would these huge nubula ever look like we make the pictures look? Traveling at superluminal, subluminal? Is there any way those images can be seen with the naked eye out of a window?", 'I know that a lo... |
How can living organisms be alive if they are composed of non living atoms? | Well sir, that's THE big question of biology. What's life?", 'The same way a computer does what it does but individual silicon atoms in it cannot. Life is just a very complicated chemical and mechanical processit’s like looking at a single brick from a brick house and asking if it can provide shelterYou can build a mov... |
How do removable storage devices like usb retains the data stored in them even when it is not connected to a computer? I read that flip-flops require constant current to retain data stored in them. | Flash memory makes use of Field Effect Transitors FET's. Field effect transistors make use of the fact that applying an external electric field can have a massive effect on the the electrical conductivity of certain transistor designs. In flash memory, a certain type of insulator that can store a static charge, is fabr... |
If you brush your teeth at night and don't eat anything until morning, what are you really cleaning when you brush in the morning before eating breakfast? | Bacteria grow in your mouth. When you eat food, they rapidly produce acids that are damaging to your teeth. By brushing before you eat, you lower the number of bacteria, and so also reduce the amount of acids produced. Ideally, you'd always brush *before* you eat, although people often do not at night. Brushing is abou... |
How did old video games fit into such small spaces on cartridges? | I recently found a cool video on YouTube that explained some tricks that they could use. Will post again if I can find it. But basically, in Super Mario for example, notice how the bushes and the clouds have the same form and differ only in color. So that's one sprite saved. Then, look at goombas. They're symmetrical. ... |
Why can’t sound engineers create a consistent volume level throughout an entire movie or TV show, it’s either too quiet or way too fucking loud at different times? | Imo a better question would be why isn't there a separate track for SFX and dialogue so you could adjust both independently like many video games let you do.Seriously. Theme music is way too loud. It may be mixed perfectly to a million dollar sound system but if it cant be played on 2 speakers, its still a bad mix. |
What's the difference between 32 and 64bit computer systems, and why aren't there, say 128bit systems. | It's the amount of bits per clock that can get calculated.Your pc has for example a processor of 1Ghz. This means that your clockrate is 1000000000Hz a second.Then you got 32 or 64 bit. This means that with every clock, your pc can calculate 32 or 64 bits simultaneously per clock cycle. It isn't bad, but you see nothin... |
Humans suffer from muscle atrophy when they don't use muscles for extended periods of time. How come bears can hibernate for months and be just fine? | This is matter of much research and no full answer is known, but..it is true that despite both weight loss and non-use, bears maintain muscle mass to a much higher degree then a would-be-hibernating human. In humans lower neural activation is a precursor to muscle mass retention. One study suggests bears lack the mecha... |
why aren’t 2x4’s actually 2 inches by 4 inches? | Nowadays timber is milled and planed to ensure it looks a little more finished, thus it's a little smaller than 2' by 4'. |
Nyquist Theorem perfect signal reproduction | > Is there some type of assumed curvature There is usually a low pass filter on the analog circuits to avoid aliasing. The filter's performance is very important. |
Why is carbon dioxide the only gas that is used to make drinks fizzy? | It's cheap, easy to obtain, and is already present in the body, so it poses no threat if it gets dissolved into the bloodstream somehow.Carbon Dioxide is used because it has a very high solubility in water , and it is relatively non-toxic either in its gaseous or dissolved form. The only other commonly available gases ... |
WHY do batteries work? | Alkaline batteries are filled with a chemical paste that reacts with a metal when placed in a conducting circuit, otherwise the paste sits happily, its essentially electroplating via chemistry while we draw from the reaction. Rechargable batteries are simply batteries with an extra layer of forethought to use chemistry... |
Why is nutritional science so inconsistent and convoluted? | The biggest problem is that not everyone's body handles the same foods the same way. Different studies might take place in different areas with different proportions of people with different reactions. For instance, lets say you have your study on butter take place in a region that has a high proportion of people who h... |
Why do Americans show the price of a product without tax? | Companies that advertise nationally want it that way, and in some ways, consumer do too. Let's say McDonalds starts a national campaign advertising, say, $2 Big Macs this month. There are a lot of customers that would be upset if they saw that ad, then walked into a McDonalds and saw $2.14, or whatever on the menu. Bec... |
What is actually involved in the process of "hacking" into something, and how is it different to that poorly portrayed in movies? | Hacking is just the process of getting access to parts of a computer system that you're not supposed to have access to. This is done by exploiting security vulnerabilities. Even the best written software will have bugs in it and some of these bugs will have the effect of giving someone access to things they aren't supp... |
Why do voters in the USA have to register as a voter for a political party before they are allowed to vote? | We don't need to register with a party to vote in the general election. Some states - not all - require voters to register with a party for voting in the *primary*, which decides which candidates run for each party in the general election. That's intended, I believe, to keep people from voting in the primary for the pa... |
Given the sugar-free options, why haven’t they made candy with aspartame, splenda or stevia? | There's a alot of sugarfree options in every grocery store here in sweden atleast, like 4-5 brands with several flavors for each brand in sugarfree icecream aswell. There's alooot of options and some of them are really good. |
Why are eggs such an important cooking ingredient in a lot of recipes, including baking? | They are not used that much in Asian cooking. Alternative thickeners and binders are wheat flour, maize/corn flour, potato starch, tapioca starch, arrowroot, guar gum, xanthan gum, carrageenan. Bacon and eggs were [invented by Sigmund Freud's nephew]. Factory farms and marketing play a part. |
Why does the red light at a stop light disappear when viewed through a blue tinted window (like the thing at the top of a windshield that reduces glare) | We perceive color when light hits an object and reflects off it. Depending on the material, some wavelenghts of light will be reflected, and some will be absorbed. The tinting material is absorbing the red wavelength, so it won't be reflected to your eyes while the other colors still are reflected. |
Why have movie trailers not only become much longer but now most seem to include the entire plot and end scenes condensed into the trailer? | Because millions of dollars spent on thousands of focus groups show the movie marketing folks that these types of trailers increase movie ticket sales, foreign distribution, etc. If there was any possibility they would make less money as a result of longer, more comprehensive trailers, they wouldn't exist.Well, thinkin... |
The sun obviously has much stronger gravity than Earth, so why does the Moon orbit Earth and not the sun instead? | The moon orbits both the sun and the earth. The sun does pull harder on the moon, and the moon's path never curves away from the sun. In a sense it shares the earth's orbit around the sun. At the same time it orbits the earth due to the earth's gravity. |
Why is the winter solstice only the beginning of winter and not the middle? | Winter is November, December and January in Ireland. That's what's thought in school as we still use the Gaelic Calender. _URL_0_", 'Think about it this way, at some point there is a situation where the number of hours of day warms your area the same amount as the number of hours of night cools. For the sake of this ex... |
How does EMDR (Eye Movement Desensitization and Reprocessing) work? | I have been a therapist and trainer for a technology called IEMT since 2008 and have had a lot of success using it. [Here's a case study I wrote for a Psoriasis client] with pictures. The key thing is that we can only pay attention to one thing at a time. Multitasking is a myth for the science). So when we're thinking ... |
Why do front wheel cars handle better on ice and snow than rear wheel? | They only accelerate better because the weight of the engine on the drive wheels. They don't stop or turn any better than rwd.When turning and accelerating one component of the acceleration is sideways which helps pull the car through the turn. Also there's usually more weight over the front wheels so they dig in a bit... |
Why are feminists called feminists and not equalists? | Because most of the modern feminists doesn't even want equality, they want more power than men have. |
Where do magnets get the energy to do magnet things. | I'm not seeing this question being asked so I'll ask it. Consider two magnets arranged so that they repulse each other. One is floating above the other. Is any energy being used here? Wouldn't energy be required to hold up the floating magnet? |
Why are humans in general (including me) opposed to or frightened of bugs/insects? Why do they make people uncomfortable, despite their size? | It's difficult to say. In short, there are a mix of factors involved. There may be a cultural component. The reason I am NOT afraid of any insects is because I've been exposed to them many, many times, enough to overcome any cultural stigma imposed on me. However, I was exposed at a very young age. We also may be just ... |
Why do graphics in older movies look so shoddy years later, when there was a point the graphics seemed realistic? | Stuff look like shit back then, there was just no other option. So we created everything on a curve. I think that was one of the reasons why science fiction wasn't more popular to the mainstream, because some mainstream people couldn't get over the poor special effects.Because "realistic" means close to real. So whatev... |
How are herbivorous animals, for example cows, able to grow so big eating only grass? | There's just this specific job in the animal world that they do well. It's being really big and hanging out in groups to reduce the risk of getting eaten, all while spending that hangout time eating and eating and eating. Predators spend most of their time not eating and laying around. I love how the roles can be so di... |
why, at airport security screenings, do electronics need to be put in a separate tray? Can't scanners see through a bag/luggage? | Lots of incorrect answers here. Laptops have a certain CT scan profile and when you put other objects on top of a laptop, that profile becomes mixed and you can't determine if it's the laptop that has organic material or the object on top. |
Why should I let my car run in cold weather? | There are little rods in your engine that slide back in forth lubricated by oil. If the oil is cold, the rods will touch bare metal and can get damaged. If the oil is warm/hot, the rods are properly lubricated and there won't be grinding/scraping in your engine. |
Is there a good, logical, or historical reason why some password setup fields severely limit the field length or disallow particular characters? | It's a mixture of several factors. For many ages, programs stored the password, for comparison when you tried to log in. Then they didn't want you to type too many letters or things that their input routines filtered out. That might include fancy characters, escape characters, non-printing characters, non-Roman charact... |
If friction causes heat, why does moving air create a cooling sensation against skin? | Moving air isn't moving nearly fast enough to create the amount of friction that would be noticeable to you as heat. At the same time, moving air will cause the moisture on/in your skin to evaporate. Evaporation requires heat and that heat comes from your skin. So if the air temperature isn't too far off from your body... |
Why are children allowed to star in TV and movies but are not allowed to work “normal” jobs? | There are limits to working hours. My sister's twins will be in Britannia S2. And the could only be on set for 3 hours. Once that limit was reached, they were rushed off set as it was illegal for them to be there after. Many days she travelled to parts of UK to film and if there were delays, after 3 hours she would hav... |
How it would be cheaper for socialized Medicare in america vs paying for health insurance. | There's one other partial consideration beyond what people have mentioned - productivity outside medicine. Socialised healthcare leads to greater availability of healthcare, and thus greater use of healthcare. A person who goes to the doctor, gets a course of antibiotics and quickly recovers from an infection is far mo... |
What is different about a good student instrument and a pro level instrument? | Just like with any precision instrument , you get better performance out of better materials and more careful craftsmanship. Cheap instruments are usually made of plastic and are created on an assembly line. They won't sound as good, they won't last as long, and they may have defects. Expensive instruments made by hand... |
How do planes just go missing in todays high tech world? | Perhaps it's not as high tech as you'd like to believe. Plus it could be the gubberment! /tinfoil |
How do Olympic athletes make money? | Probably coaching and private lessons. Tangentially, pretty much every quarterback from my high school when I played took us to the playoffs and played D-1 ball, and now they each own/run or work at one of those youth quarterback/football training centers that have popped up in the last 15 years. On some level I think ... |
How come granules in teeth whitening toothpaste damages your teeth enamel but not oral prophylaxis that uses metal things to clean your teeth? | My dentist always recommends that I only brush for 20 to 30 seconds twice a day and focus on regularly flossing for better gum health. The frequency and duration of which most people brush slowly grinds away the enamel over years, whereas you're not getting poked by your dentist 2 to 3 times a day all year. |
Why does Earth hardly ever get hit by meteors? | The Earth get hit ALL the time. According to NASA, there is an asteroid the size of an automobile hitting the earth each year, while an asteroid the size of a football field hit the earth each 2000 years. _URL_0_ Basketball-sized object hit the earth daily and volkswagen-sized objects hit every couple of week. Accordin... |
Why are Congressional officials paid during shutdowns, but not blue collar government workers? | Because there Congressional officials would be the ones to decide if their pay was cut during the shutdown. They don't want to dock their own pay. |
Home Owners Associations. What? Why? Why all the horror stories? | I don't know if there's data on how people are generally satisfied with HOAs or not but I think its reasonable to say that most HOAs are pretty benign and disputes are handled by the book. Mine for example is really just about making sure people's parking spots are kept available and keep the grass cut and streets plow... |
If a star in its red giant phase absorbed a star similar to our sun would it refuel the red giant and make it go back into its main sequence stage? | No. 1 star + 1 star doesn't equal the sum of those stars, it equals one hell of a collision, which will blow matter all over the place. It's more likely that the red giant will lose out on the event.No, it will put it further away from that stage. If you wanted to "fix" that kind of star, you would want to remove mass,... |
Why can’t humans see all wavelengths, and what causes them to be harmful? | Think of evolution as the laziest person you know. The ability to see and process a wavelength of light costs energy in processing. Therefore, evolution will try to find the least energy solution to being able to navigate the world, so it just picks a part that gives information valuable to humans. NOTE: Evolution is n... |
What is the difference in Propaganda and Fake News | gray", and "black" propaganda. White propaganda is entirely truthful, although usually selectively truthful. Black propaganda is simply false and deceitful. Gray propaganda mixes truthful and deceitful elements. "Fake News" is usually gray propaganda or black propaganda . & #x200B; |
Why is the temperature usually less cold when it's snowing? | Like somebody else said, cold air is most often dry. I used to live in Yellowknife, way up north in the northwest territories. Around October to mid November, it snowed a bunch. Once it hit December, it almost never snowed. It was regularly a sunny, gorgeous looking day, and when you walk outside it's minus 45 with win... |
how does dyslexia work? are you dyslexic in all languages? | Dyslexia isn't just mixing up letter. Dyslexia is caused by a different way of thinking. People with dyslexia think in a much more visual way than the average person. They also have a higher ability to be able to mental view objects from different perspectives, rotating them in their minds. But because of this ease som... |
how come older video games have fewer glitches | Older video games didn't have the ability to be patched post launch, so what they shipped was what people got. Kind of why a lot of glitches have become infamous. If a game now has a glitch, the developers will just fix it. |
Why do computers, phones, laptops etc. get slower as they get older? | Most people are saying that there hardware does not get any slower, but technically there is some damage to some of the internal components over time just from operating. That can cause performance problems, but the effect will be very small compared to software issues and you won't likely notice it until something fai... |
Why are Americans allowed to pay bail to get out of jail? | You're innocent until proven guilty. Jail is to hold people considered a risk, such as for flight. But bail provides an incentive to return if they let you go: to get your money back. Note that jail is not the same thing as being in prison as part of a conviction. |
Why is there tax on second-hand items at thrift stores? The gov’t has already collected tax on the item the first time | States charge sales tax any time a product is sold. It doesn't matter if it has been sold in the past, it gets charged every time. It would be a big logistical headache to have to prove that you have already paid sales tax previously for every item. It's much simpler to say that all sales are taxed, regardless of if th... |
How did early explorers map out the shape of countries so accurately? One specific example would be Matthew Flinders with Australia. | By careful measurement. Let's consider the alternative. It's called getting lost. Certainly people did get lost, but nobody preserved the maps they made, because those maps get you lost. The maps that survived from 1803 to today are just the really best ones. |
Why are migranes so much more frequently by women than men? | Women's hormone fluctuate more than men, which contribute highly to having migraines frequently. But that gould just be a cause. Migraines can occur due to several factors in the body such as diet and musculoskeletal disorders |
Why is there such a huge repeated number of same instruments in orchestras? | Two reasons. 1) Because nothing is amplified. You have a violin playing against a trombone, you're going to need more violins in order for them to be heard. Some orchestra venues have a house pipe organ which is used as part of some performances. There's only ever one of those because they're **loud**. 2) You need more... |
Why do our bodies not ache after sleeping for several hours vs. when awake in a stilled position for several hours? | OP must not be over ~30 yet because that's about the age I started waking up sore most days. |
What are the pros to nuclear energy? Is the storage of waste still a problem? What roadblocks are stopping it from being viable? | Nuclear power is already viable. The roadblocks are mostly due to peoples fear and perception of Nuclear power as a ticking time bomb when it really isn't. We have methods of safely storing nuclear waste and have been able to do so for decades. Research into Thorium reactors is ongoing. They are potentially much safer ... |
If employees can legally end an employment contract at anytime by giving 1 months notice, what is the purpose of 2 year and 5 year contracts? | This question can't be adequately answered without knowing the country, state , and city you're talking about. Contract law and labor law varies widely, and and answer for one area isn't the same as another. |
How can data be protected from hdd failure without having to write every single bit in 2 separate places? | Basically parity computation. Drobo can use one or two parity drives. Let's use an example with one party drive. Say you have 4 drives. Each block of each drive is mapped to every other drive. So if you use even parity. Then whatever value block 0 has on drive 1,2,3 you calculate the parity so everything is even. Ie if... |
Why’s it so hard to breathe when there’s strong winds blowing in your face? | I'm so confused. Theres all these divers saying it's a reflex and all these sciencey folks explaining it by pressure differences. Both claim to be right and both are believable. It's true though that I can breathe in the wind but I have to center myself first. I guess I'm believing the divers?", 'This is just the mamma... |
Why is the audio mix on movies/TV so much quieter than YouTube/online video? | It's hard to answer your question completely without knowing what kind of YouTube videos you are watching. HBO is professionally produced and they tend to go for a cinematic experience with a lot of difference between the quiet parts and the loud parts. YouTube content can be created by anyone so some folks will create... |
Why is carbonated/seltzer water made with carbon dioxide and not oxygen? | Oxygen causes things to spoil. CO2 does not.Oxygen gas is flammable. CO2 is notFor the same pressure not much oxygen can be dissolved than CO2. I don't think anyone has offered oxygenated water commercially. I have heard of nitrogen being used for beer. As for watering plants I don't think it would hurt, but I don't th... |
If the entire global electrical grid was fried (by a coronal mass ejection or something similar) would the internet be salvageable? | It's up to each website to have backups of the data, so, yes, possibly the internet would be back up as soon as power is restored. Though a CME may fry electronics too , so perhaps some of the websites may be down until they restore.In your scenario, internet recovery is well down the priority stack. In fact, loss of t... |
Why are airlines specific about the weight of bags when the passengers weight vary so much? | Passengers weight fluctuation is accounted for because they can't unpack 20 pounds of fat. They have a hard limit on bags to a) get more money and b) you can always throw away some clothes", 'In addition to what others have said. People have to pick up the bags to load/unload the plane. Personnel injuries are more like... |
Why are Animals scared of us Humans? | Funnily enough humans are actually pretty big for how dangerous we are. It's something like 70-80kg for an average adult male- that's as much as a freaking Jaguar, more than an adult wolf and even as much as female gorillas. An animal might guess a human is much more physically powerful than we actually are purely on s... |
How can the gravity from the sun keep the planets locked in orbit, but we are weightless in space. | Good question. A force as you'll learn in high school is a vector. Simply put, it means it can affect a body in 2 ways. It can either increase the velocity of a falling object, making it fall faster and faster, or it can change the direction of the velocity, making you move in a constant speed but continuously changing... |
How do people get snuck up on by trains when they're so loud? | There are a few things. Electric trains can run surprisingly silently, even at fairly decent speed, but most of this kinda thing happens at slower speeds, I think. If trains are just cruising at 20 or 30mph, they really are very quiet. They're running steel wheels on smooth steel rails, there's almost no wheel noise to... |
Why do most people find rats unappealing but other rodents such as squirrel and hamsters cute? | Just to second everyone else pretty much, a big part of it is association with the plague, alongside just being thought of as pests/dirty in general. There aren't that many pets that have a commonly seen wild counterpart , so people are more likely to see a wild rat than than a wild cat or dog or heck, even a pet rat. ... |
How does the earth spinning on its axis not slow down or lose momentum? | Objects in motion tend to stay in motion unless acted on by an outside force. The outside forces are very small compared to the mass of the Earth, so it's slowing at a astronomically slow pace.Because there is no friction in space, so there is nothing to slow the earth down. Now the earth does actually slow down a litt... |
Is it worth the effort to wash your hands after peeing, if there's bacteria on the public bathroom tap? | Any advice from actual doctors or people with actual solid evidence? I'm pretty sure that's what this post is asking for and not just your opinions |
How does an extension cord overheat? | It's all about the resistance and shielding, extension wire is thin to bend easy and due to the lack of heat shielding will over heat and melt the rubber or plastic on the outside. |
Why do anti-biotic medications require a prescription? | Because you could take too few of them. When you stop taking antibiotics because the symptoms are gone, the bacteria that remain, the antibiotic resistant ones, multiple and spread into the environment. When the environment is full of antibiotic resistant bacteria, everybody dies. The rest of us don't trust you. We don... |
How do game companies make a game engine that requires more power than contemporary computers can make? | A lot of it comes down to math. Mathematical formula's are used by software to draw more and more realistic pictures. The more realistic you try to get the longer it takes for the computer to process the math. Something like a video game has significantly more than just graphics going on, which takes up processing time... |
How do you win a lifetime of *blank* | This will depend on the contest. There is no standard, though I'd say pizza? Over time. Toilet paper? They might just have a one time bulk option. |
Why, although I speak good English and am able to understand regular conversations, movies and album skits etc. do I struggle so much to understand lyrics in English songs? | I am no expert but I'd say human brain first focus on the tune or melody the song has to give. I usually give 4-5 hears before I could actually focus on the lyrics.. Only exception would be foo fighters, where I deliberately chose to focus on lyrics first. |
Why is it that we can’t superduper charge our batteries with a super «shock» like one of those heart rescue thingies and it’ll be full? | First off, the defibrillator you mention charges capacitors. They don't store as much energy as batteries, and they deliver very little energy to a body. Now a few reasons. The cells charge by ions transferring from one terminal to the other. They take time to do so. Even if they were fast, the energy needed to charge ... |
Can someone explain why there’s actually no way to basically revive something or someone dead? | First we have to make the distinction between brain death and clinical death, because they're not the same. Clinical death is cardiac and respiratory arrest. This is, depending on what caused it, sometimes reversible. If you restore someone's heartbeat and breathing within a few minutes, you can resuscitate them. For e... |
If photons are massless, then why do they have momentum and produce a force? And if light has energy wouldn't that mean it has mass? | In classical mechanics the momentum is p=mv, but this doesn't work for particles, instead, quantum mechanics take place with momentum defined by p=h/λ where λ is the wavelength. So, by the equation E² = ² + ² a photon have energy E=pc=hc/λ=hf where the frequency f=c/λ. E=hf is the energy of a photon postulated by Einst... |
Why We Can't Remove The Cancer Cells With Surgery? | That's what happens with skin cancers. However, cancer is a generic name for a lot of specific diseases and not all of them are so easily treatable. |
If music CDs are burned with the opening tracks towards the center, how are open-world video game discs burned? | Think about a cabinet of folders. You might have 100 folders, in order, with a label of 1,2,3,etc, 100. You could store your life information chronologically, starting with your birth certificate in the first folder, death certificate in the last folder, and everything else organized in between. However, just because y... |
Why could retro cartridge-based games not save player data without a battery backup? Why do modern cartridge-based systems not let you do this as well? | It's a cheap and elegantly simple solution to the problem. Nintendo had originally planned on using floppy discs. Which at the time were an ideal storage medium. They held more than a cartridge, and had a little bit of extra non-volatile storage for saves. Though for one reason or another the Famicom Disc System was ne... |
How exactly are imaginary numbers useful? | i is useful because sin and cos can be represented by e^ also known as Euler's equation. This makes calculus much more convenient. Also imaginary is a bit of misnomer. It's not that the number doesn't exist it just exists on another dimension of the number line. Normally you have just one axis say an x axis that goes f... |
Considering all the talk of colonising Marss, wouldn't it be easier to just make a moon base? | The moon is closer so it has that going for it, but Mars is a proper planet with real planet like gravity and an actual atmosphere and even a day night cycle that humans might be able to adapt to . So if you want to build a home in Earth-like conditions Mars is much closer than the Moon. The moon will be a necessary wa... |
How can boats have holes in the bottom to drop things into the ocean? | Because the surface with the hole is above the water line. The simplest model would be a pontoon. Two large tanks provide the buoyancy, and a flat deck is placed on top of them. But the deck is above the water. You could cut a hole in it and it wouldn't affect the buoyancy. |
How do we know what different parts of the brain do? | By damaging them and seeing what happens, usually. Medical experimentation has a long history, much of it gruesome or unethical, and yet much of it necessary for medical progression and to ultimately save lives. In the case of brain regions, we've determined what they do by a combination of observing behavioral changes... |
how were the trigonometry tables for sine, cosine, and tangent discovered without a calculator? | You can work anything out by hand, if you are willing to put in the time and effort. Here's a good article about women who used to spend months working out artillery firing computations in the days before computers: _URL_1_", 'You can figure out some from Pythagorean theorem and identity functions. cos^2 A + cos^2 = 1^... |
How did electron knows which path is shorter? (e.g How electricity will choose to flows through metal rather than wood) | Think of it as water running down a rocky mountain slope. The more resistance, the less the slope and the more rocks in the way. The water will go down the steepest slope. It doesn't matter if it's height difference or voltage difference, it's the steepest way down which counts. |
Where did the cracking noise go when someone receives a text message? | Old phones used to go in to a low power mode where they would just listen on a frequency and wait for the tower to broadcast a wake up message. When they got it they would try and connect with the tower. Initially it would use the highest power signal to do so, but once the connection was established the power would dr... |
How do bees survive if we keep taking honey from them? | In past times, the bees usually did NOT survive, since there were no removable frames in the beehives . Nowadays, the bees build honeycombs on frames that can be removed one by one. Thus a beekeeper can leave them enough honey to survive the winter. It's also common to harvest all the honey and provide a substitute for... |
the science/reasoning behind contra-rotating propeller blades. Either boat or airplane; preferably airplane. | I think the torque explanation is a bit incomplete because you can cancel the torque with a pair of separate propellers as well, what's the difference then? The difference is indeed in the airflow because in the case of separate propellers each one will generate a vortex, the torque cancels out but the end result is yo... |
How do dryer sheets remove wrinkles and/or reduce static if it's just the small sheet? Wouldn't it not be touching all the clothes in the load? | I'd like to know if they still work when you take the clothes out when they're still damp? Or do the clothes have to be somewhat dry? |
Why does the nurse look in the toilet bowl after you’ve taken a drug test? | You're supposed to catch the urine mid stream. So if theres no urine they can assume that you used fake urine. That's why it's best to put some in the test and some in the bowl. |
does the North Pole move? | The North pole, or true North, does not move. This is the center point defined by the Earths rotation. On a plastic globe, this would be the spot that holds the globe on the stand and it spins around this point. If the Earths rotation changed or started to wobble, this would change true North and the North Pole would m... |
What's the difference between CS (Computer Science), CIS (Computer Information Science, and IT (Information Technology? | **Computer Science** - Math behind creating computer programs and systems. **Computer Information SYSTEMS** - This is what businesses called Information Technology in the '70s and '80s. It is a set of things working together to control information on computers. Databases, file servers, etc. **Information Technology** -... |
Why do identical twins look slightly different? Shouldn't they be 100% identical? | Identical twins split off from the fertilized egg very early in the development process . There are many opportunities for variations to occur during development, because the timing of genes being activated and deactivated can still change how things turn out. In females , there's a process that randomly inactivates on... |
Why NaCl is not lethal? | Say you have a giant rock at the top of a hill. If you push it off, it will fly down the hill and crush everything in its path. Now say you have a giant rock at the bottom of the hill. If you push it as hard as you can, it won't move or crush anything. Pure sodium is like the rock at the top of the hill. It will give o... |
Why does film footage from the 60's often look much better than footage from the 80's given that technology should have advanced? | [Technicolor] was a very high-quality way of recording color images onto film, but it was complex and expensive. In the mid 60's it began to be replaced by cheaper processes. A lot of those processes resulted in films that have degraded a lot over time, but the technicolor films have stood up much better. [Here's a vid... |
How is Netflix able to operate whilst being in so much debt? | Debt isn't necessarily a bad thing. When most people purchase a house, they go into debt. They get assets that they hope are worth it, and Netflix does the same. When you buy a house, you don't go bankrupt because you don't have $100,000, you make an agreement on how you'll pay them back with interest and Netflix does ... |
How do cells know what to do when every cell contains the same DNA? | There are markers when the body develops as cells are turned on. That's why heart muscle cells only develop in the heart, nerve cells go where they need to go. & #x200B; Fun fact, the markers in mammals are vitamin A based. I was studying with a professor who worked with rats that were exposed to mega-doses of vitamin ... |
How do smart phones not over heat? | Something I haven't seen as a response yet is also also important to keep in mind, and that's energy. Mobile processors are specificly designed to be as energy efficient as possible, with less importance given to performance. The applications available for phones are purpose built for these devices. Much more attention... |
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