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Who wrote the bible (The original one I guess?) And where did they get their sources? | If you want to get into the matter in a little more depth, you can read about the [Documentary Hypothesis], which, with some minor variations, is all but universally accepted by biblical scholars today. In short, what scholars have found is that the Old Testament is a patchwork of at least four parallel sources woven t... |
The (US) economy and debt | This is a complicated subject. Debt is acceptable **so long as you can continue to service that debt**. It isn't helpful to simply look at the amount of debt; you need to also know how easy it is for people to pay it back. When it comes to the US Government, since they can print as much money as they need, they will ne... |
i was just wondering what a computer engineer actually does in the work field | There are lots of different things Computer Engineer do. One of the main areas they work in is called Embedded Computer systems. That's a fancy term for the small computer systems inside all of our electronics. Things like:* Microwave Ovens* TVs* Automobiles* Smart Phones* Advanced Washer and Dryers* Home Security Syst... |
Why did men's pants move down from the "natural waist" to the hips? | Is this why old guys wear there pants up to their arm pits?Things like this are up to fashion, they have no significance so they can eaisily change based on recent trends.The trend of lowering the waistline started around the 60's with European suit style influences. I'm in my mid-20s right now, and I personally still ... |
"Reading" a person by looking into their eyes | I am not a neuroscientist but here's my answer. When you establish eye contact, you activate the visual cortex and the front lobe basically. That means that you acknowledge information, process that information, and "judge" that information, almost the same time . Since our vision is the most used and important sense, ... |
Why do old movies (i.e. silent films) seem sped up? | Partly because you're watching them at the wrong speed :) Until sound came around and it became necessary to sync the image with something, there was no frames per second standard for film. Additionally, silent filmmakers didn't always believe that films were meant to represent motion and speed realistically. Nowadays,... |
What determines how much space there is on a hard drive? | Take a pencil and draw a circle on a piece of paper. Make dots filling the inside of the circle, but do not allow any of them to touch. Now use a sharper pencil. Now a mechanical pencil. Now a pin. The point is, consider each fragment of data as a dot. The way they get more data on new harddrives compared to older ones... |
That terrible pain in your jaw that you get sometimes when you eat something sour | It's your salivary glands going into overdrive. Next time you eat something sour, pop it into your mouth only briefly and leave your mouth open. You will produce a lot of drool all at once. Also, you can google images of where your salivary glands are and see that the sensations match their locations. |
The stigma surrounding the F-35 fighter jet, and what the better alternative would be. | Short version? Because it was built to satisfy a rather difficult requirement, thus compromising the overall design. The plane has three variations: an air force variation, navy variation, and marine variation. The marine variation required the plane to be able to take off vertically . Objectively it's kind of a silly ... |
How do animals like human babies and puppies learn their name and language? | Comparing animals and humans is comparing *qualitatively* different things. Animals do not learn languages or their names, they recognize sounds. Dogs have also evolved over thousands of years to be very sensitive to human moods and emotions. They do not "understand language" in any meaningful sense. And yes, I'm inclu... |
If the answer to my connectivity problem is always "Unplug and plug in your router", why don't manufacturers put in an easy-to-use on/off switch? | Serious answer: It's one more moving part that could break, and it costs maybe 1 cent extra. Slightly-less-serious answer: I work in phone support, and you would be shocked by how many people can't find and press a power button, even it it's *the only button on the device*. Most people can at least manage to unplug a p... |
How does water evaporate? | > The boiling point of water -the point at which the liquid becomes gas- is 212F/100C, yes The boiling point of water is 100c, yes. But it is not the temperature at which liquid becomes gas, it is the temperature at which water *boils,* which is a specific 'bulk' phenomenon, where the entire liquid is energetically cap... |
Why do people with Down's Syndrome have an almost identical eye shape? | [There] [is] [a] [search] [bar]. tl;dr a "syndrome" is a common set of features that are generally present in a disorder. When a child has Down Syndrome, which is a third 21st chromosome , the features that occur tend to be similar and include eye shape, among numerous other physical features It is one of the physical ... |
What info can cookies access about me or my browsing history? (Other than the cookie's originating site login info) | Cookies are just a storage form that certain websites use. As such it can contain any information that the website thinks is necessary to record on them, including "who" you are so if you return they know you are the same computer as before and they can internally combine the information from before with the new one an... |
Weather Maps and how to read them. | If you're talking about regular maps. [This looks like a nice key to everything.] Wave maps [like this] show how tall the waves are and in what direction they're going in. |
Are those actual farmlands, the squared or otherwise geometrically-patterned fields we see from above on airplanes? | I guess it depends where you are flying. If you are in Western Canada I can assure you that yes, that's all farm land. |
Why does a 1 meter sea level rise matter so much? | A lot of the world's population lives only a few meters above mean sea level. Lower Manhattan for example is 1.5-2m above sea level on average, Miami is about 2m above, and New Orleans is almost entirely below sea level. |
Why do worms arise on the concrete after it rains? | Because in the now moist environment they can move above land to environments they could not previously reach easily .Contrary to popular belief, worms don't actually come out of the ground because of the moisture, but because of the vibrations caused by the rain hitting the ground.[Wild Kratts taught me that is is bec... |
How do deaf people learn sign language? | The same way hearing people learn to speak. The kid's parents will point to something, usually say the word so the kid can see how their mouth moves, and make the sign. I learned sign language and lip reading this way after being born with only one working ear drum. |
How Beethoven made music without ever hearing it? | He didn't start losing his hearing until he was 26, so he knew about the sounds of different instruments, notes, keys, and tempo. he just had to imagine how the music sounded in his head after he became totally deaf. |
Why does China support North Korea | Because SK is an American Ally, and NK presents a buffer between the US and China. This is one of the reasons they dont want the peninsula unified, because China doesn't wan the US right on their doorstep. |
Why does my skin perceive a breeze as a cooler air temperature? | Moisture on your skin is evaporated. The state change from liquid to vapor requires energy for which the net result is a cooler temperature on your skin. It's why we sweat. |
Why do helicopters typically have two rotors but most hovering-style drones have 4 or more rotors? | It's a good question. Helicopters use one giant rotor for direction and lift while the tail rotor is simply to counter the primary rotor. With the drone the convergence on four propellers is really for ease of stable flight. It's a lot easier to use those four rotors to balance and control direction of motion. Which me... |
Why do vehicles like cars and bikes have inflatable tires instead of solid tires? | Sit in a shopping cart and have someone push you around the parking lot - be sure to hit some holes in the asphalt1. The air in the tire acts like a spring. Which helps with bumps. 2. Smoother rides. 3. More fuel efficient to have air. 4. Uneven distribution, thats why civilian vehicles dont use foam like military vehi... |
Why do people with down-syndrome tend to share very similar facial features? | Down syndrome is caused by a mutation called *trisomy 21*, where the 21^st chromosome in such a person has three copies instead of only two. Since the cause is always an extra copy of only that chromosome, that's why Down syndrome causes the same cognitive, facial and body features in all those with the condition. |
The term "illegal per se" in the context of US Law | The act is inherently illegal. For example sex is not illegal per se; it might be illegal with a lack of consent, but there is also legal sex as well. Some things are always illegal no matter the surrounding circumstances and those are illegal per seIt means "in itself" and more specifically you can think "the thing sp... |
If soaps emulsify fats, why do sink drains (esp. in kitchens) still get greasy pipes? | Because PVC pipes are non polar so they catch more grease naturally. If you look at old galvanized pipes you’ll notice they attract less grease and more minerals like calcium and ironEmulsification of fat, doesn’t make the fat water soluble, it just breaks it down into small droplets and lets it mix with water. The gre... |
Does it really matter if your outdoor water faucet connected to your hose is on or off? Water isn't going anywhere, but I read somewhere that you shouldn't keep it on? | Hose connections aren't that great, and the constant pressure isn't good for the hose. The gate valve in the faucet is extremely strong and can resist the pressure from the water supply almost indefinitely. The rubber in the hose and the cheap seals in the connections are much less robust. If you just left it on a seal... |
How do most fast food places have such a consistent product? | All the food is prepared at central distributors and shipped out. The franchise just does the final cooking. The things that are really giving that consistent flavoring are the sauces and spices, which the franchise gets in bulk from corporate. Mcdonalds franchises aren't prepping burger patties or chicken nuggets, the... |
Why can alcohol companies advertise their product but not show the actors drinking their product? | So first you must realize that the US has few regulations on ads. Most of our regulations are self-imposed. The FCC doesn't have any guidelines in place for alcohol consumption in advertisements. Many broadcast networks, however, still stick to The Television Guidelines as a rule of thumb for advertising, which banned ... |
why my pubic area is itchy after I shave my pubes | You've made small abrasions on your skin with a dull razor. The skin that covers the pubic area is extremely sensitive, and even a brand new set of blades can still cause tiny scratches. Not enough to bleed, but they will itch. Moisturize the area afterwards. It will help a bit. |
How is a Physics Engine for a Video Game Made? | In code. They write the logic to detect what even they want to do something and the code to make the system react appropriately. On collision, for example, I need to work out a 'bounce' of some kind, or to keep the object from getting pushed further by the force at least. Actual details vary wildly based on how the res... |
Why are insurance companies not ripped off ALL the time? | If you get caught you can face huge fines and a number of years behind bars. Insurance companies do investigate suspected fraud and they are good enough at catching it that the punishment is often enough to make people too afraid to try itThey have armies of well-paid fraud investigators who have the right to do thorou... |
Why are teeth so often crooked? | Most people's faces aren't even, most noses aren't straight and most eyes aren't exactly even either. That goes for hairlines too. People are imperfect. Usually people the vast majority of us find attractive are people who have more symmetrical features. Teeth have never been straight. Society decided along the way tha... |
How did Facebook know I might be friends with a person in another city, when I've given them almost no information? | Perhaps that person has you in a virtual address book on their email, phone etc which they have given permission for FB to link through. You gave FB your name, it sees your name on his contact list and suggests the connectionHave you accepted any friend requests or sent any friend requests to anyone? If so, it most lik... |
Why can't climbers parachute down Mt. Everest after climbing it? | Someone hang-glided down a year or so ago. It was an extremely dangerous proposition even for the very experienced climber and hang-glider, though. Up that high the air is thinned, you don't get the lift you might expect, and sudden gusts can get you killed regardless of experienced. Even if you make a landing, it you ... |
How can police confiscate your phone as evidence for taking photos from a public space of a crime scene when the first amendment protects freedom of the press? | They can't, not legally. You see stories about this, but not one where a bystander has been sentenced by a judge for refusing to turn over their phone. Some people believe that the press have legal protections in this matter not available to the public. This is a lie often told by police. Don't fall for it. |
The cosmological argument and its criticisms | 1. Whatever begins to exist has a cause. 2. The Universe began to exist. 3. Therefore, the Universe had a cause. So something had to have caused the universe to exist, let's call that cause the prime cause. When did this prime cause begin to exist? You now have to repeat the argument --- 1. Whatever begins to exist has... |
Do sound (waves) exist in the third dimension? If not, which? Does energy have a such a measurable property? | Yes, sound exists in 3D. Sound "waves" are the result of patterns of alternating high and low pressure zones in a medium . In all cases, sound always radiates spherically from the sound source. So to visualize, imagine a point in the air. Then imagine a ball around that point, and then a ball around that ball. That wou... |
The difference between Debtors prison and the $675,000 fine against Joel Tenenbaum ? | In some countries, taking a debt you can't repay is a crime. You go to jail, hence debtor's prison. In the US, its a civil matter. The US also has bankruptcy where you can get rid of your debts and start over, but you may lose some assets too though. With the exception of a few things in the US , you can't go to jail f... |
How do New York City and State, for example, routinely elect Republican Mayors and Governors, despite always voting overwhelmingly Democratic in presidential elections? | I'm not sure I would say they "routinely" elect Republicans, but to answer why overwhelmingly Democratic states/cities sometimes elect Republicans, it's because state Republican politicians in blue states like NY tend to be much more moderate than national Republican politicians. A good example would be Mitt Romney, wh... |
What is quantum immortality? | Quantum mortality has to do with Quantum Suicide. First let me explain Quantum Suicide. Quantum suicide is when somebody is let's say in a box. He holds a loaded gun towards him and he pulls the trigger. According to Quantum Physics right there at that moment the world splits in two. In one world the gun was a working ... |
Why are there different types of pain? Like dull pain, sharp pain, burning, etc. | The types of pain occur at the level of the brain. All pain is initially received as a sharp burning sensation. Once it reaches the brain, the brain may decide to change the conscious perception of the pain to reflect more information. There are several kinds of receptors in the skin: nociceptors. There are mechanical,... |
How Did Sikhs Come to Be, And What Do They Believe In? | Sikhism is based on the spiritual teachings of Guru Nanak, the first Guru, who started the religion around 1520. The first 10 Gurus wrote the Guru Granth Sahib, the religion sacred text. Three Pillars of Sikhism are: 1) Meditation on God and reciting and chanting of God’s Name—Waheguru. 2) Life as householders and hone... |
Why do things get slower the bigger they get? | Muscles are most efficient when they are small. There is also a law that says when size increases, the volume of the creature increases by a factor of x^3 but the muscles only increase in strength by a factor of x^2. So whilst elephants and whales are much stronger than humans, pound for pound they are much weaker beca... |
Why isn't the shortest day of the year the middle of winter? Or the longest day the middle of summer? Rather than the first day of each. | Because the seasons are based mostly on the temperatures. The coldest day of the year isn't actually the shortest day of the year, because it takes time for the sun to start heating things up again. Likewise, the longest day of the year isn't the hottest because the earth retains that heat for a while and the days are ... |
Why are wooden boxes with locks called "CHESTS"? | The word comes from Latin “cista”, a chest or casket, which comes from a Greek word for a basket. The word “box” actually comes from “pyxos”, the box or boxwood tree. |
What's the difference between the way our brains process information and the way standard computers do it? | There are several essential differences. One is how data is transported. Computers use binary to encode data, ie 1s and 0s. Our brain's "circuits" work with analogue data; a nerve can be excited on a scale . Another is that brains process information much more in parallel. Computers may have several CPUs, but those are... |
How do the Balkans and Ottoman empire relate to the cause of WW1? | The Ottoman Empire was a Turkish government with control over Turkey, most of the Middle East, North Africa and the Balkan. A rising powerful empire since the 14th century, The Ottoman was in decline during the 19th. It had difficulty keeping up with the industrialisation of the western powers, the rise of nationalism ... |
What happens and what does it feel like to die from hunger? | Once your body has used up the easily burned food in your stomach, it starts to consume fat cells and mucle mass. Once your body has run out of energy in either fat or consumable muscle cells, you body will start to consume your vital organs. Some organs will start to swell, which is why so many images of "starving chi... |
What are the "This is my Senator" posts I am seeing all about? | It is not sudden knowledge. They are required by law to have that accessible to every citizen. The money is campaign donations. It is shady because much of the time when Congressmen take donations from big companies there is an unstated "IOU" type of agreement where that Congressman would attempt to support and favor t... |
How did we calculate Neptune's record wind speed accurately at over 2100k/h when it is so far away? | The unit is not k/h as that would be 1000/h and per time is a frequency not a speed. km/h is a speed. IF you take two images with a time between them of the planet you can see how a cloud has moved. Remove the rotational speed of the planet and you get the wind speed. You can see a video about that here _URL_0_ |
Why does the US have military bases in numerous different countries but no other countries have military bases in the US? | Other countries can benefit from the protection of the US military presence. The US does not benefit from the presence of foreign military forces because what could they do that the US can't do better? |
is "mine and Jill's pumpkins" correct or incorrect? | No, the correct way to say it is Jill's and my pumpkin. If you are ever in doubt as to which pronoun to use just drop the other part of the subject. i.e. Should it be "Mine pumpkins" or "My pumpkins"? |
Why it is so hard for us to view images of people breaking bones? | Nobody likes to be reminded of their fragility & mortality It has a lot to do with empathy. But another reason may be the vasovagal response. When a person is faced with a certain trigger the body may initiate this reaction. Your heart rate drops and/or your blood pressure. In some cases enough to make you faint. In mi... |
How Britain(with a small landmass compare to other big countries) was able to conquer, make an empire back in the days? | Being an island nation was essential to British strategy. Since it is easier to defend you could do with a smaller military which allows more money to be invested. The Kings of Medieval and Tudor England had an efficient taxation system and could levy taxes on the nobility. This allowed them to punch above their weight... |
Why do more asians wear glasses than any other race? | Honest opinion here. It is probably due to the fact that schooling is much more emphasized in Asian families, with the required studying comprised of close up reading. This creates nearsightedness in developing eyes of youngsters when it is not balanced efficiently with activities that develop farsighted vision.[Exposu... |
Why does half-and-half have a 2 month expiration date if milk expires in 3 weeks or so? | The water in milk is host to the bacteria that spoil milk. They cannot live in pure fat -- butter doesn't spoil by "going sour" it only "gets rancid" . The less water you have, the less bacteria get to live in their happy place. Half and half is half cream, thus, has less water content to provide a home for bacteria. I... |
If I were to break open a chunk of fossilized amber containing an insect or plant matter, what would happen to the fossil inside? What properties of its past form would be retained? | Well, first, if you had a legitimate amber fossil, do NOT break it open because they're worth millions of dollars. Second, if you got to the specimen inside, most if not all DNA would be deteriorated, it's not like the movies where they're perfectly preserved. A skilled scientists may be able to extract digestion mater... |
Why are we harder to move when unconscious? | When we're conscious but are still being moved by someone We still comply with the movements, and often try to assist with the movement as much as we can. When we're unconscious we won't comply with the movement but simply lay there as a pile of flesh and bone. |
Why do doctors cup your balls and ask you to cough? | There's a condition known as a hernia, where the wall separating your scrotum and the rest of your insides is weak or has a hole in it. Coughing makes stuff poke through.Not quite the same question, but I asked my Dr. why he ask me to turn then cough. He replied," would you want me to cough in your face?" |
How come I wake up a minute or two before my bus stop more or less like clockwork when I fall asleep on the bus? | It's probably a combination of a bunch of subtle clues that you subconsciously pick up on. It could be a pattern in the stops right before yours, subtle changes in the scent of the air near your stop, specific sounds that you only hear near your stop, the absence of the voice of a person who gets off right before your ... |
What sets the actual values for currency exchange rates? | OK. This is a pretty common misconception with all "stock" style markets. The key is that the value that gets published is not a "price" in the traditional scene of the word. The value that gets reported is a historical average of actual buys and sells. So you're quite correct that nothing prevents someone from buying ... |
[Meta] Can we have an ELI5 FAQ? | Also /r/askscience: [FAQ]. I agree; this would be a great addition. Frequently asked questions are especially frustrating because the search feature makes it difficult to find the answer. If a question is asked frequently enough that it's annoying then that means there are a ton of posts where all of the answers just s... |
What actually happens when a program stops responding? Why does it sometime crash and other times continue working? | Let's start off with your operating system. That's going to be Windows, etc. That's your overseer within the computer, and it communicates and interfaces between you and the other applications inside the computer. Normally, the operating system is freely communicating between you and the programs, but sometimes, this c... |
What happens when you shoot a gun in the air and the bullet comes back down? | If you shoot it straight up, it eventually slows, stops, and then falls to the ground, its rate of descent ultimately at its terminal velocity. If you shoot it up but at an angle, it falls 'down' at up to terminal velocity but will also have some lateral momentum in the direction you fired it . The latter can certainly... |
Right Triangle: Hypotenuse Length Vs Change In Opposite Height | The Pythagorean Theorem tells you the relation between the sides of a right triangle. a^+b^=c^. So the graph you have is just the function c^ =b^+60^. So if you solve for c you get c=sqrt+60^) The rate of change of the hypotenuse isn't linear because the equation describing it isn't linear. However, the reasons it even... |
What effect does more cores and slower speed have on a CPU versus having less cores and a higher speed? | A simple way to think of it is like a highway. A quad core only has four lanes, but a higher speed limit. The 8-core has 8 lanes but a slower speed limit. The 8 lane highway will be able to processes more cars/second, but no car will go quite as fast as on the four lane highway with the higher speed limit.Generally, a ... |
What happens when you run batteries of different voltages in parallel? | This is not unlike the electrical system of an automobile. The battery is twelve volts, and the alternator produces slightly more, say, 12.5 volts. That extra half-volt trickles back into the battery, recharging it, while the rest of the car's electrical system is getting the current from the alternator. So with the tw... |
Can I own a personal ATM machine? | You can certainly buy one. If you want it to actually talk to the bank you can go to any number of distributors that will install in in your living room for X amount of money/month. Or you can start your own business; I know a guy who did it. Lots of paperwork. Lots of cash so the gov't makes sure you aren't laundering... |
- If electrons are constantly losing energy while being in an atom, why don't they fall to the nucleus? | Big objects, like the sun, planet, and baseballs, behave how you're describing. They would lose energy spinning in circles. Electrons though are too small. They don't obey classical laws. They obey quantum laws. Electrons aren't really spinning around the nucleus. They're doing something else that we can't really descr... |
Why is hydrogen peroxide odorless in the bottle, but smells like vinegar when it touches your skin? | It's called 'oxidation' and that is what H2O2 does - it's reaction with organic material will give off a smell kind of like vinegar when it reacts. Here's a fun experiment - cut up a potatoe into slices and put Hydrogen Peroxide in a cup. Dunk the potatoe slices in and watch the bubbles! Those bubbles are oxygen and th... |
Why do humans generally perceive themselves more attractive in the mirror rather than the front cameras of their phones? | It's the angle: we look straight on in a mirror whereas in photos /selfies the camera is usually angled showing lines, bulges, etc. |
How does Hillary's comment saying that victims of sexual abuse "should be believed" until evidence disproves their allegations not directly step on the "Innocent until proven guilty" rule/law? | I don't know the context, but I would hope she was saying that allegations should always be investigated, rather than simply dismissed out of hand."Innocent until proven guilty" is how the *justice system* is to treat the accused perpetrator of a crime. Believing people who claim sexual abuse allows them to seek justic... |
Why does the rumble of thunder last so much longer than the actual lightning strike that causes it? | It's got to do with the way the lightning bolt is oriented compared to you. For all intents and purposes a lightning bolt happens in a single instant. And the shockwave, aka the thunder. Forms along the path of the lightning at that very moment. Now even if the bolt travels straight down from the cloud to the earth, wh... |
How do action potentials "jump" from node of Ranvier to node of Ranvier? | They don't "jump" from node to node. The axon is more like a hollow tube that very small ions travel inside of. The insulated parts prevent the ions from escaping as they travel down the tube. The nodes are breaks in the tube where you want the ions to leak out so they can deliver whatever message they need to but only... |
If there are millions of Reddit users, why do front page posts only have 3 - 4000 upvotes? | A) this is asked a lot, please use search B) Each subreddit is only used by a small fraction of the total users, so most reddit users never even see those posts. Of the small fraction that actually sees it, theres an even smaller fraction that actually votes. Of the fraction that votes, there are always a certain perce... |
How are new computer programming languages created? | This is a gross oversimplification, but: First the developers of a new language generally try to decide on the problem they're trying to solve. Whether it's making an intentionally confusing language like Brainfuck, an interpreted language that's platform independent like Java, or a language that tries to promote data ... |
Why does heating up and cooling down some types of metal make stronger? Can I use it to strengthen my kitchen knives? | Steel is the main one here. The metallurgy of steel is a huge topic: a steel object is made up of steel crystals with different properties, and if you heat and cool steel in particular ways, you make them change to the type with the properties you want. For example: a sword needs a sharp edge, so you want that edge to ... |
Why does Radio Shack need more than $62 million to close its stores? | OP, they have contractual obligations that thy must meet. Such as: leases of stores, local vendor contracts, utility obligations. Et cetera. |
if I were to drive directly towards a radio tower, would the music speed up? | Yes, but imperceptibly. The tempo would get multiplied by roughly a factor of 1 minus your speed divided by the speed of light - and since you're moving *way* slower than light is, this factor is very very very close to 1.Actually no but if you were fast enough, the frequency the station is on on your radio dial would ... |
Why is it legal for me to share a textbook with a friend but illegal for me to simply pirate a copy? | Because the First Sale Doctrine says that the publisher of a book loses physical control of the book after he sells it, after that, the purchaser is completely free to dispose of the book as he wishes . But the law explicitly forbids copying the book without permission.The best way I've heard this explained is that cop... |
How does WiFi work exactly? And does a slowdown/buffering signify an issue with the WiFi/router? | WiFi is a short range radio broadcast that communicates with your device both ways. Slowdown can be caused by your router. If you live in an urban area, a very common issue is that most routers use the 2.4ghz spectrum to broadcast, and you might be competing with hundreds of other networks. Try getting a dual band rout... |
Why does the media (TV, news, etc.) blur out licence plates on vehicles? | I worked for a televisions station and we would do it because everyone else did. Years ago you could get information on any person if you had their license tag. I also worked for a law firm and I would go down to the courthouse with a tag number and get every detail about someone from their tag. Now you cannot. So trad... |
How the Double-heading (Double engine/locomotives) railways work efficiently ? | Multiple-unit train control - basically single control for all the engines running one train have been around in different forms from 1920's |
Why do new release novels come out first in hardback then months later in paperback? | You got it in one in your original post. The cost of producing a hardback book is maybe a dollar. The cost of producing a paperback is maybe $0.50. But the hardback sells for $20 or $30 and the paperback sells for $10.I work in publishing. Yes the reasons are mostly financial. Unless your book is a sleeper hit whose sa... |
. Why are you told to “put your arms up” when you’re choking? | Some people think raising your arms raises your diaphragm and helps you breath when your coughing. If you're actually choking and can't breath at all, you're better off making the sign for choking: putting your hands around your neck.Ex fireman here. Maybe u mean while a respondent performs the Heimlich maneuver? While... |
How do anti-thief sensors at the store work? | It's an RFID tag. Short version: It is a microchip antenna that captures and returns radio waves. When it returns the signal, the antenna recognizes the code it transmits. If the code is associated with an unauthorized piece of merchandise, the computer will sound an alarm. Long version: When radio waves from the reade... |
Why aren't there any major enclosed bodies of water in the world like the size of the Gulf of Mexico or a small ocean? | There is one. The Mediterranean Sea was, long ago, a completely enclosed body of water. Even today, the opening is quite narrow.The Great Lakes as a system are pretty big and so is Lake Baikal in Siberia . However, water doesn't tend to collect in huge lakes because water likes to flow with gravity. And since lakes are... |
the difference between a racecar and a sports car | in the strictest of terms race cars are special built for a track or one type of event, their modifications make it to where they are no longer street legal, a sports car is just a sporty car. you can make a car a race car but you can't make a race car a normal car", 'Each race car will have a list of restrictions that... |
Why aren't USB cables included with printers? | - To save money. - Almost all printers these days have wireless capability making the cable optional.I've bought nearly a dozen printers in my life and every single one of them came with a usb cable.I find that printers only last a couple of years no matter how well you maintain them and how often you run the cleaning ... |
Are microwaves unhealthy? Could they give you cancer? | 1. The way microwaves work is by vibrating the water molecules in your food, translating the radiative energy into kinetic energy. This movement gives off heat because energy is transformed, much like you would get hot if you were running.2. Altering the structure of the food is perfectly safe, much like when you cook ... |
What happens to old cellphones when you upgrade or trade in? | Probably sold to scrap dealers , who will harvest the metals found in the circuitry and junk the rest. Or it just goes to the nearest landfill. |
Why do you die if you jump off a bridge if there is water underneath? | Even though you're landing in water, you're traveling so fast that it's like slamming into concrete. Think of it like this, when you're at the beach, you can slowly dig your hand into the sand pretty comfortably. Now try and slap it really fast. It'll be like you're slapping pavement. Replace the sand with water, and y... |
How do costume shops stay in business when almost all their sales come from a few days? | Those that are open year round tend to specialize in higher quality costumes used at more occasions than just halloween. Renaissance fairs, anime/scifi/comic conventions, birthday parties, themed parties, etc are all common things that occur throughout the year that standard civilians participate in. Many costume shops... |
If you want to heat an oven or stove to 175 degrees, does turning it way up to 400 degrees make it get to 175 faster? | For an electric oven, no. The temperature control is a thermostat, not an accelerator. If the oven is below the set point, the element is on; otherwise it's off. It will take the same amount of time regardless of the setting. For a stove, it depends. A gas stove uses valves to control how much gas comes out, so turning... |
Can anybody explain MX records LI5? | So given that you understand the basics of DNS, which a 5yo would probably not do, I'll try to give a slightly more technical explanation on this: Whenever you send an email, your email server will first extract the domain name from the address , e.g. _URL_1_. It will then use regular DNS techniques and look up the MX ... |
What's the purpose of the orange lights on top of larger trucks and tractor trailers? | I believe those are called "clearance lights." They're apparently required by law in the US and Canada on larger vehicles. For **why** I'm not sure, here's a few possibilities randos threw out from googlin\': * They indicate to other drivers that the vehicle they're looking at is taller, larger/heavier, and probably wi... |
What is going on with the recent Cloudflare leak and is my data safe? | For a time, Cloudflare websites were rarely disclosing random data from other websites using Cloudflare. This potentially includes private data, but not necessarily. It could be the contents of an HTTPS request containing nothing interesting , it could be an authentication token used for an account on a particular site... |
Why would a company like Dell go 'Private'? | It's not that the company decides to go private, it's that Michael Dell decided to take it private. He is going to buy all the shares off the existing owners. So instead of 1000 people owning 0.001%, one person owns 100%. They sell because he gives them a better price than anyone else for their shares. He is doing that... |
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