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- what is pink floyd's the wall about? | <p> pink floyd – the wall is a 1982 british surrealist live-action/animated musical drama film directed by alan parker with animated segments by political cartoonist gerald scarfe, and is based on the 1979 pink floyd album of the same name. the film centers around a solitude rocker named pink, who, after being driven i... | The walls we erect around ourselves to shelter us from the pain inflicted by the world / other people.. |
what does natural air smell like? one that's not polluted | <p> biological sources of air pollution are also found indoors, as gases and airborne particulates. pets produce dander, people produce dust from minute skin flakes and decomposed hair, dust mites in bedding, carpeting and furniture produce enzymes and micrometre-sized fecal droppings, inhabitants emit methane, mold fo... | Never been out to the middle of nowhere? Also air generally is very smell-neutral. (Which makes sense, smell is supposed to help you figure out what's going on around you and whether food is good to eat. Being alert to the air around you is just a waste of time and is rightly ignored.) |
when i listen to someone playing the piano, why do i know when they make a mistake even if i've never heard the song they're playing? | <p> "why this book? because few instrumentalists understand why the piano so often betrays their thinking. all the elements - stability and fingerprint, true relaxation, tactile and cerebral awareness - give the means for a real and not only intentional sound requirement."
<p> bullet::::- the 1991 party game "notabili... | Your ears will naturally lock on to the key/tune of the piece of music. So if someone deviates from it, your ears will notice. |
why do your gums and teeth feel weird when you don't get enough sleep? | <p> common symptoms include drooling or dribbling, increased chewing, mood changes, irritability or crankiness, and swollen gums. crying, sleeplessness, restless sleep at night, and mild fever are also associated with teething. teething can begin as early as 3 months and continue until a child's third birthday. in rare... | I've never felt this. Is this really a thing? |
what are the dangers/benefits of having a low birthrate and a large percentage of your population over the age of 65? | <p> these rates are especially pronounced for children under the age of 5-years old, particularly in lower-income, developing countries. these children have a much greater chance of dying of diseases that have become very preventable in higher-income parts of the world. the instances of these children dying of things l... | People over 65 generally work (much) less than young people. But, they consume much, much more of a country's social services, like healthcare. An aging population and low birthrate suggest that in the future there will be many fewer young workers to support the growing needs of the aged group within the society. Addin... |
why are nasal antiserums used so sparsely? | <p> in adults short term use of nasal decongestants may have a small benefit. antihistamines may improve symptoms in the first day or two; however, there is no longer-term benefit and they have adverse effects such as drowsiness. other decongestants such as pseudoephedrine appear effective in adults. combined oral anal... | Shots are the quickest way into the bloodstream. While a nasal spray vaccination works, it has to be absorbed into the blood vessels in the nostrils to trigger an immune response. More importantly, the flu shot is a dead strain of the virus while the nasal spray is a live strain. Neither can give you the flu but the sp... |
why do so many babies do that thing where they fidget and kick so much when changing their diaper? | <p> babies may have their diapers changed five or more times a day. parents and other primary child care givers often carry spare diapers and necessities for diaper changing in a specialized diaper bag. diapering may possibly serve as a good bonding experience for parent and child. children who wear diapers may experie... | Probably because they're either uncomfortable or stimulated by new sensations. They're always bundled up, then, suddenly their most sensitive (especially if they have diaper rash) parts are wet and exposed to open air. Then, your wiping sensitive skin which can sting. If they're not uncomfortable they may just find nov... |
is there a way to 'stop' in space, or would we in theory always have velocity above 0 m/s? | <p> if one's goal is simply to "reach space", for example in competing for the ansari x prize, horizontal motion is not needed. in this case the lowest required delta-v, to reach 100 km altitude, is about 1.4 km/s. moving slower, with less free-fall, would require more delta-v.
<p> if the speed is higher than the orbi... | The question of stopping in space is not a complete question. Relative to what is the rest of the question. Stop is only in relation to a certain object. It is possible to stop in relation to any particular object as long as you match course and speed. |
why has there been such a marked increase in spam/scam phone calls in the past few years, and is there anything that can be done about it? | <p> the lesser and geographically uneven prevalence of mobile phone spam is attributable to geographic variation of prevalence of mobile vs non-mobile electronic communications, the higher cost (to spammers) of and technological barriers to sending mobile messages in some areas, and to law enforcement in others. today,... | The level and detail of information about people is so accurate now that these companies can afford to ring you. Before they would need to randomly dial every number for a few hits. Now they can purchase data on things like, people who have had a car crash, people who have bought a PC etc. Our data is everywhere. What ... |
why has there been such a marked increase in spam/scam phone calls in the past few years, and is there anything that can be done about it? | <p> the lesser and geographically uneven prevalence of mobile phone spam is attributable to geographic variation of prevalence of mobile vs non-mobile electronic communications, the higher cost (to spammers) of and technological barriers to sending mobile messages in some areas, and to law enforcement in others. today,... | ELI5: When you mail a letter some place, you usually put a return address on it. However there is nobody that actually checks to verify the letter came from where you say it did. You could live in California and pretend to be from Washington, and if you use a re-mailer service the post marks will even show it's from Wa... |
just watched ford v. ferrari. how was the 1964 gt40 able to achieve a top speed of 210+ when modern supercars are still barely pushing 200? | <p> the next opportunity to reach the claimed top speed was a shootout at nardò ring organized by "auto, motor und sport". ferrari sent two cars but neither could reach more than , beaten by the porsche 959 s, which attained a top speed of , and the ruf ctr, which attained a top speed of . both were limited production ... | It's not that they can't. We have Hennessy making road cars that can hit 270. A lot of factors and a certain degree of risk/reward comes into play when you're going that fast. It's not worth it for a lot of manufacturers. |
just watched ford v. ferrari. how was the 1964 gt40 able to achieve a top speed of 210+ when modern supercars are still barely pushing 200? | <p> the next opportunity to reach the claimed top speed was a shootout at nardò ring organized by "auto, motor und sport". ferrari sent two cars but neither could reach more than , beaten by the porsche 959 s, which attained a top speed of , and the ruf ctr, which attained a top speed of . both were limited production ... | A modern supercar is quite different from a race car. race cars are spartan, lightweight, have no emissions (to speak of), and are designed to go very very fast. Also, most of them will kill anyone who's stupid. The 1964 GT40 was technically a prototype car. Yes, there were several, but they were all hand built, hand t... |
just watched ford v. ferrari. how was the 1964 gt40 able to achieve a top speed of 210+ when modern supercars are still barely pushing 200? | <p> the next opportunity to reach the claimed top speed was a shootout at nardò ring organized by "auto, motor und sport". ferrari sent two cars but neither could reach more than , beaten by the porsche 959 s, which attained a top speed of , and the ruf ctr, which attained a top speed of . both were limited production ... | First of all you're comparing a 55-year-old racing prototype to brand new road cars. The Ford GT40 was made to go as fast as it could, reliably enough to win a 24-hour race; a modern 'supercar' is designed to look pretty, be comfortable, meet government safety regulations, etc. reliably for years. A more apt comparison... |
just watched ford v. ferrari. how was the 1964 gt40 able to achieve a top speed of 210+ when modern supercars are still barely pushing 200? | <p> the next opportunity to reach the claimed top speed was a shootout at nardò ring organized by "auto, motor und sport". ferrari sent two cars but neither could reach more than , beaten by the porsche 959 s, which attained a top speed of , and the ruf ctr, which attained a top speed of . both were limited production ... | I don't know where you get the "barely pushing 200" from. 1993 McLaren F1 - 240.1mph. ... 2005 Bugatti Veyron - 253mph. ... 2007 Shelby Supercars Ultimate Aero - 256.18mph. ... 2010 Bugatti Veyron Super Sport - 267.857mph. ... 2014 Hennessey Venom GT - 270.49mph. ... 2017 Koenigsegg Agera RS - 277.87mph. ... 2019 Bugat... |
someone dies before they get a chance to retire. what happens to all of their social security benefits? | <p> similarly to u.s. citizens, a person who worked in h-1b status may be eligible to receive social security benefit payments at retirement. generally, a worker must have worked in the u.s. and paid social security taxes obtaining at least 40 credits before retirement. the person will not be eligible for payments if t... | Social security isn't a personal bank account. There's no fixed total sum of money each person is entitled to. There's a spousal benefit if the spouse survives. There's also a children's benefit with some limits. If there's no spouse or qualifying children, there's nobody entitled to a benefit. So there's no benefit. B... |
why don't general physicians cover teeth? | <p> often oral health education and training is limited for healthcare aids and nurses, leading to suboptimal oral care for dependent patients in long-term care and hospital settings. the toothette is inaccurately used in the long-term care and hospital setting as the predominant tool for oral care, and toothbrushes ar... | Dentistry is more complicated than you'd think. Dentistry needs to consider not only teeth, but the entire oral cavity. It's not just making sure someone doesn't have a cavity; you also need to understand how the bone structure of the skull and the associated soft tissue play into things. |
why do people go to different doctors for dentistry, surgery, and primary care but pets go to one vet for everything? | <p> most vets work in clinical settings, treating animals directly. these vets may be involved in a general practice, treating animals of all types; may be specialized in a specific group of animals such as companion animals, livestock, laboratory animals, zoo animals or horses; or may specialize in a narrow medical di... | The extent to which a human will pay for/enroll in specialized services and micro-management of their physical condition created a large market of providers. In other words, because there is enough money and patronage in the broad field to allow doctors to focus on the education, experience and infrastructure required ... |
why are there no sentient plant-based species? why is base intelligence so abundant and diverse in animals, but non-existent in the plant kingdom? | <p> it has been argued that although plants are capable of adaptation, it should not be called intelligence "per se", as plant neurobiologists rely primarily on metaphors and analogies to argue that complex responses in plants can only be produced by intelligence. "a bacterium can monitor its environment and instigate ... | > Is there something inherent to “plant cells” that prohibits that possibility? It is more something inherent to plant biology that prohibits the possibility, and is related to the lack of nerves within plants. Brains require *a lot* of energy! The human brain consumes about 20% of the total energy used by the human bo... |
why do unreleased cars get tested with the black wrap all over them? | <p> due to its high development costs in the midst of a competitive market, these testing sessions are intended to be as secretive as possible to prevent competitors gaining an advantage and sometimes developing a similar vehicle of their own. it has become a common practice for car manufacturers to mask details of the... | The manufacturer doesn't want their competitors or their customers to know exactly what they are developing until the product is actually released. It takes years to develop a product like a new car. If Chrysler were to know how the 2021 Corvette was designed they might borrow from that to make their own sports car. An... |
why in cartoons they show cats are scared from dogs but in reality most of dogs are scared from cats? | <p> kittens are vulnerable because they like to find dark places to hide, sometimes with fatal results if they are not watched carefully. cats have a habit of seeking refuge under or inside cars or on top of car tires during stormy or cold weather. this often leads to broken bones, burns, heat stroke, damaged internal ... | Back in the day, people kept their pets outdoors more often then now. Dogs would be leashed outside or keeped in a fenced yard, often as guard animals, and cats would typically be put out for the night. Strange animals would often come into contact with little human supervision, and the territorial dogs would chase any... |
when does a country go from a developing nation to a developed nation and when was this first coined? | <p> bullet::::- the origin and definition of developing countries: like walt whitman rostow, mohammed tamim believes that, beginning with the industrial revolution in england during the 18th and 19th centuries, developing countries can be defined as countries in transition from various traditional ways of life toward t... | There's technically no clear-cut definition and thus no 'true' answer to what makes a nation developed and not developing. Definition may differ and may have different ideological content attached to it. Hence the fact that developed and not developing deals with several aspects (which were already dealt with in the ot... |
what is a proxy, how do i get one and why do i want to? | <p> proxy is defined by supreme courts as "an "authority" or power to "do" a certain thing." a person can confer on his proxy any power which he himself possesses. he may also give him secret instructions as to voting upon particular questions. but a proxy is ineffectual when it is contrary to law or public policy. whe... | Basically it makes so people can't track your IP address and trace downloads or other browsing back to you. |
how come we can see the contrails of planes when they are high up but not when they are low down? | <p> this is when an aircraft is moving at very low altitude over a surface that has a regular repeating pattern, for example ripples on water. the pilot's eyes can misinterpret the altitude if each eye lines up different parts of the pattern rather than both eyes lining up on the same part. this leads to a large error ... | The same reason you can't see your breath on a warm day. Cold air cools down your breath, or in this case the jet exhaust, and allows the water vapour to condense into water droplets which are then visible. |
rene descartes' proof of god and his alleged circular argument | <p> many commentators, both at the time that descartes wrote and since, have argued that this involves a circular argument, as he relies upon the principle of clarity and distinctness to argue for the existence of god, and then claims that god is the guarantor of his clear and distinct ideas. the first person to raise ... | "concept of God as that than which nothing greater can be conceived. To think of such a being as existing only in thought and not also in reality involves a contradiction, since a being that lacks real existence is not a being than which none greater can be conceived. A yet greater being would be one with the further a... |
what is difference in coffee roasts such as medium and light? | <p> bullet::::- "dark roast" coffee tastes subjectively stronger than medium roasts. standards are based on medium roasts, and the equivalent strength for a dark roast requires using a lower brewing ratio.
<p> the degree of roast has an effect upon coffee flavor and body. darker roasts are generally bolder because the... | The amount of time the beans are roasted for. Roasting for longer changes some of the chemical composition in the beans, which affects the flavor and mouth feel. Light roasts tend to have a sharper taste (called 'acidity' in coffee lingo but it's not talking about actual acid), while darker roasts tend to have a smooth... |
why some google's features aren't available in some countries? | <p> competitors of google include baidu and soso.com in china; naver.com and daum.net in south korea; yandex in russia; seznam.cz in the czech republic; yahoo in japan, taiwan and the us, as well as bing and duckduckgo. some smaller search engines offer facilities not available with google, e.g. not storing any private... | I just tried some of the things you mentioned, such as "etymology for euthanasia" and "university of Iowa acceptance rate", by visiting /ncr (to override the redirect to my local Google). I'm using IE11, even when I turned compatibility view on (IE7, Google puts a black link bar at the top of the page) it still worked.... |
how can i weight 252 pounds at 10pm and then weight 249 pounds at 6am the next morning? | <p> rates are rarely reported but in 1725 and 1761 is 18 pounds per person tournaments. he is 21 pounds in 1770 to reach 42 pounds in 1790 (fortunately for the traveler, it is stated that the "sleeping bag weighing 10 pounds is" free").
<p> in the early nineteenth century, there were no standard weight classes. in 182... | Poop? Pee? Sweat? You lost weight. We're you wearing more or less? Not yo mention just errors in the scale. If you were standing on it differently, etc. |
what makes the https protocol secure? | <p> historically, https connections were primarily used for payment transactions on the world wide web, e-mail and for sensitive transactions in corporate information systems. , https is used more often by web users than the original non-secure http, primarily to protect page authenticity on all types of websites; secu... | The 's' in https means secure. Jokes aside, https uses SSL/TLS encryption between your browser and the webserver. There are groups called Certificate Authorities (CAs) who exist to vouch for the identity of different websites. They use keypair cryptography (in which there are two keys, and you use one key to encrypt so... |
why don't computer processors run at 100% always when under load? wouldn't it complete the job faster? | <p> in a processor-based system, the speed of the processor is always more than that of the main memory. as a result, unnecessary wait-states are developed when instructions or data are being fetched from the main memory. this causes a hampering of the performance of the system. a cache memory is basically developed to... | When they need to they do. There are some reasons it may not though: 1. CPU speed isn't the bottleneck: if the program needs to pull a lot of data from its code, usually the limiting factor is the speed of the storage drive, (aka hard drive or SSD). The CPU can't do much if its waiting to receive data. 2. The program i... |
why artificial coloring perceived as worse than natural? | <p> widespread public belief that artificial food coloring causes adhd-like hyperactivity in children originated from benjamin feingold, a pediatric allergist from california, who proposed in 1973 that salicylates, artificial colors, and artificial flavors cause hyperactivity in children; however, there is no evidence ... | Some people are allergic to some additives. A lot of people believe that a lot of additives are in some way toxic or carciogenic. It makes food seem more 'natural' which is something a lot of people like. So it's also good marketing. |
how is it that we are still not able to truly soundproof a room without turning it into a fortress? it seems like the only solution is concrete. | <p> several different materials may be used for sound barriers. these materials can include masonry, earthwork (such as earth berm), steel, concrete, wood, plastics, insulating wool, or composites. walls that are made of absorptive material mitigate sound differently than hard surfaces. it is now also possible to make ... | Sound is vibration of matter. It is pretty hard to stop vibration from spreading. If you put a wall up, the vibration will simply transfer to the wall, then through the wall and out the other side. The only real way to stop sound is to suspend the source in a vacuum somehow, and that isn't really possible on earth. Eve... |
why it's called a semi truck. | <p> in the united states, canada, and the philippines "truck" is usually reserved for commercial vehicles larger than normal cars, and includes pickups and other vehicles having an open load bed. in australia, new zealand and south africa, the word "truck" is mostly reserved for larger vehicles; in australia and new ze... | The "semi" doesn't refer to the truck. It's called a semi truck because it's built to carry what's known as a semi-*trailer*: a trailer which doesn't have front wheels on it, because it just slides on top of the truck. (There are full trailers that do have front wheels, but they're much rarer.) |
how efficient are our muscles at converting energy to movement? | <p> the conversion efficiency of energy from respiration into mechanical (physical) power depends on the type of food and on the type of physical energy usage (e.g., which muscles are used, whether the muscle is used aerobically or anaerobically). in general, the efficiency of muscles is rather low: only 18 to 26% of t... | Our muscles are around 25% efficient. Electric motors can exceed 90% so an electrically powered robot could do much better, especially as they might be able to recapture some energy regeneratively. Still, the advantage of electric motors is not as big as it seems, since converting other forms of energy into electricity... |
why are bugs attracted to the indoors? and why do they struggle to go out the window once they’re in? | <p> during certain times of the year boxelder bugs cluster together in large groups while sunning themselves on warm surfaces near their host tree (e.g. on rocks, shrubs, trees, and man-made structures). this is especially a problem in the fall when they are seeking a warm place to overwinter. large numbers are often s... | There are a LOT of insects. Some are bound to get on on accident. You just don't notice all the ones outside, or even the ones that try to get in but fail |
why do i go cross-eyed and get blurry vision when i'm fighting falling asleep (such as during class or in traffic)? | <p> if blood is allowed to pool in the lower areas of the body, the brain will be deprived of blood, leading to temporary hypoxia. hypoxia first causes a greyout (a dimming of the vision), also called brownout, followed by tunnel vision and ultimately complete loss of vision 'blackout' followed by g-induced loss of con... | You go cross eyed and get blurry vision when you're fighting falling asleep because your brain is literally trying to shut down and you're not letting it. Eventually, your brain wins. Listen. I have fallen asleep at the wheel once. I woke up literally flying through the air, having veered off and ramped up a drive way,... |
what makes a food item filling? and why is that some high calorie items aren’t necessarily “filling” food? (ex. fries) | <p> this is a list of stuffed dishes, comprising dishes and foods that are prepared with various fillings and stuffings. some dishes are not actually stuffed; the added ingredients are simply spread atop the base food. one cannot truly stuff an oyster or a mussel or a pizza.
<p> some products are sold with fillers, wh... | Part of the feeling of being full comes from having your stomach stretched and your digestive system engaged. Foods differ in the amount of work your body has to do in order to get at the calories. Foods like pork take a lot of work to digest because its got a lot of tightly bound up protein and it gets prepared by che... |
if somebody is pointing a gun at me, how far away roughly would i need to be to be able to duck and miss the bullet if the trigger was pulled? ps i know this would change from gun to gun, but would like an example. | <p> neddie is doubtful. he says "how can someone shoot themselves by pointing their finger at their head like this and going..." at that point there is the sound of a gunshot, followed by neddie's body falling to the ground.
<p> with pistol quick kill, the pistol is gripped and pointed at a target much like a person w... | Human response time: 200ms Muzzle velocity of an average 9mm round is about 1200 fps. Assuming that you have the visual acuity to see the shooter pull the trigger, the bullet will have traveled 240 ft. This distance is pushing it for even the best of marksman. So if someone is shooting at you with a pistol from a reaso... |
oled displays: samsung vs apple | <p> universal display's oled screens currently feature in samsung's galaxy s, s ii and s iii, s iv and s v smartphones. the galaxy s3 sold 10 million units in the first three months after its launch in april 2012. also, their galaxy note has sold 10 million units since launch.
<p> the samsung galaxy sl has a superclea... | They can boast and claim whatever they want, its generally done with enough weasel words and qualifiers that its "accurate" Reviewers can also call them out on their odd claims and they do, but its still the best display that's been in an iPhone yet Samsung doesn't particularly care, they're getting nearly $100/screen ... |
why is it that sometimes you have to hold the toilet handle down to flush it? | <p> toilet seats often have a lid. this lid is frequently left open. it can be closed to prevent small items from falling in, to reduce odors, for aesthetic purposes or to provide a chair in the toilet room. some people also close the lid to prevent the spread of aerosols on flushing ("toilet plume").
<p> in those set... | The way tank toilets flush is by adding water to the bowl (the part you pee into) until the water pressure helps siphon the water down the toilet drain. When you flush, the handle is lifting a stopper at the bottom of the toilet’s water tank (the upper part of the toilet where the handle is) which allows water from the... |
why are high rise buildings safer than shorter buildings in the event of an earthquake? | <p> traditional seismic design assumes that the lower stories of a building are stronger than the upper stories; where this is not the case—if the lower story is less strong than the upper structure—the structure will not respond to earthquakes in the expected fashion. using modern design methods, it is possible to tak... | I'm no expert here, but I'll give a quick answer till someone can go into actual detail. It depends on the strength of the earthquake, as they produce different frequencies of vibrations. Taller buildings have different Resonance Frequencies than shorter buildings. Resonance frequency is the specific frequency (number ... |
how do those images where a 3d image appears when you cross your eyes work? | <p> when one image is presented to one eye and a very different image is presented to the other (also known as dichoptic presentation), instead of the two images being seen superimposed, one image is seen for a few moments, then the other, then the first, and so on, randomly for as long as one cares to look. for exampl... | All the random dots repeat in fixed-width columns. Crossing your eyes allows you to view the columns overlapping as if they were one, though they will still look flat. To get the 3D effect, for any individual dot, you can make that dot appear farther or nearer by shortening or increasing the distance between them (thin... |
assume the universe is infinite, is there then other realities in which everything is almost exactly the same as on earth? | <p> "only the pythagoreans place the infinite among the objects of sense (they do not regard number as separable from these), and assert that what is outside the heaven is infinite. plato, on the other hand, holds that there is no body outside (the forms are not outside because they are nowhere), yet that the infinite ... | that's not necessarily true. just because something is infinite does not mean it does anything interesting. i can come up with an infinite string of numbers that never repeats itself but is entirely bland. 10100100010000100001.... (i.e. add one more 0 between the 1s every time) |
how come we are legally adults and we can be tried as adults if we can't still buy alcohol? | <p> the age at which people are legally allowed to purchase alcohol is 18 or over in most circumstances. adults purchasing alcohol on behalf of a person under 18 in a pub or from an off-licence are potentially liable to prosecution along with the vendor.
<p> persons under 18 years cannot drink alcohol on licensed prem... | There's some evidence that alcohol abuse is still significantly more harmful at 18 than, say, 30. Because of this, the federal government made a large amount of highway funding contingent on states setting their drinking age to 21, and every state agreed. |
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