Datasets:
sentence-transformers
/
eli5

Dataset card Data Studio Files
xet
Community
question
stringlengths
19
300
answer
stringlengths
28
1.02k
Why does corporate technology seem to cost way more than the consumer equivalent?
If you kept your data on a single $75 SATA drive, don't be surprised if it just disappears one day due to a crash. Enterprise level storage arrays are much more expensive. That $23,000 is likely for solid state storage (aka flash) and not SATA. It's in an array that is fault tolerant and probably has software to create things like snapshots, clones, and backups, and it generally needs to fit the needs of the rest of your company's data. Having a special solution just for you that doesn't fit other applications' requirements is a nightmare to maintain if everyone does that. If you look up storage arrays that are just disk and don't have all those bells and whistles (in the IT world, we call that JBOD - jaybod, or Just a Bunch Of Disk), and you will be paying much much less per TB. You could probably get well over 200 TB for that $23,000 price tag. It will have fault tolerance, but probably no way to do snaps, clones, or replication.
How does a Transistor work and why is it so important?
The easiest way to think of a transistor is like an electronic switch. You can turn off the flow of current by applying a much smaller current to the transistor. So imagine the flow of current in a circuit like cars on the street. The transistor is a stop light. When the light is green, the cars can flow. When the light is red, they stop. Because electricity wants to keep flowing, with multiple transistors you can control the flow of electricity and use it to perform simple (or not so simple!) tasks. Imagine a circuit with two transistors. You could set it up so that if one transistor is on, a light lights up, and if both are on, two lights light up. Now you've made an extremely simple calculator that can only do 1+1. Modern electronics are built off of the Integrated Circuit, which is actually thousands and thousands of extremely tiny transistors on a silicon chip. So imagine my silly little two transistor circuit. If you had many more transistors, you could make it do all kinds of things.
why does Obama have a high approval rate among foreigners
When people aren't subjected to the day-to-day politics of a particular country, it's easier to see a foreign leader favorably. For instance, Francois Hollande most certainly has a higher approval rating in America than he does in France. His policies wouldn't make for a viable candidate in the United States, but people here don't know what his domestic policies are. People in America have a favorable opinion of France and as a result, they have a favorable opinion of Francois Hollande. Obviously, President Obama is far better known internationally than Francois Hollande. But contrary to what some thing, the United States is well liked in much of the world. Therefore, people have a favorable opinion of President Obama. Also, if anyone is curious, [here](_URL_0_) is President Obama's approval rating in a variety of different countries.
- How a bill becomes law
I will let School House Rock handle this one: _URL_0_
What is nymphomania and how does one become one.
It can be like a drug addiction because of the chemical reactions that occur in the brain. You just wouldn't develop any type of dependency. However the craving, and desire is just as strong in all addictions.
What is it about swimming that allows Michael Phelps to win so many medals? Why aren't there similar repeating winners in other sports, such as track and field that has multiple races with various distances?
There are four different types of swimming strokes as well. If there were separate 100m and 200m dashes for regular sprinting, running backwards, crawling on all fours and hopping like a rabbit as well as relays for each type of running you'd eventually see a sprinter win a mountain of gold like Phelps'.
How do Kickstarter payments work? What prevents the receiver from just running away with the money?
To my knowledge, nothing stops them. In fact there have been numerous complaints of people never getting what they order off of Kickstarter. It's very much buyer beware.
Why we get shocked when we lick the top of a 9v Battery
It works because you're completing the circuit, allowing electrons to pass from the positive terminal, through your tongue, to the negative terminal. As far as it being cruel, I've stuck my tongue to a fair share of 9v batts in my time and never felt anything more than a tickle or vibration feeling.
How is NASA 100% sure microbes aren't attached to the rovers and similar probes? When 99.99% sure means we're possibly spreading our alien microbes to other worlds.
They aren't, and in fact, they're quite sure there _are_ microbes. They just get all of them they can.
Why are our pupils more sensitive than the white around it?
The white part of your eye (called the [sclera](_URL_0_)) is opaque, and is what primarily holds in the [eyeball juice](_URL_1_) that fills up your eyeball. The iris is the muscular stuff that can constrict and change the size of your pupil. Your pupil isn't a structure: it's a hole whose size is changed by the constriction or relaxation of the iris. The cornea is the part of your eyeball that sits in front of the iris that has the lens in it. Your cornea has more nerves in it than the sclera does. When you touch (or poke) the cornea, you notice it more because more nerves get triggered. This makes sense, since the cornea is way more important than the sclera. Hope this helps explain a bit.
What's going on in Texas with planned parenthood and medicaid
The government gives money to various programs. One of which is Woman's Health. The Woman's Health program gives 40 million dollar to Texas for Woman's Health clinics. One of the largest Woman's health clinic is Planned Parenthood group which does Pap smears, gynecological exams, and mammograms. Planned Parenthood also does family planning, STD screen and provides abortion as well. The Texas governor doesn't want money to go to Planned Parenthood but the law that the federal government uses to give out money for Woman's Health say you can't restrict which Woman health clinics get the money. This is for multiple reason, the largest being that it would allow the State to control which Treatment the Woman get. As such when Texas passed a law saying that Planned Parenthood could not get money, all federal money had to be stopped. Under a previous law no federal money can go to support abortion so the money was not going to support abortion, merely Planned Parenthood other activities which have been listed.
What does it mean to say something is post-modern? Does it just mean "meta"?
Not really an explanation, but here's an interesting way to put it: Pre-modern: This is the truth. Modern: We can find the truth. Post-modern: There is no such thing as truth.
What is Aum Shinrikyo? What do they believe/work towards?
They were a sort of Buddhist doomsday cult who were led by a man named Shoko Asahara, a spiritualist and a con man. They were responsible for the Sarin gas attack on the Tokyo subway system in the late 1990s. I don't think they exist under that name anymore, I seem to remember reading about them rebranding themselves as Aleph following Asahara's conviction. I used to be very interested in them and read everything I could find, but it's been a while since I last thought about them. These are the basics as I recall them though.
Differences between copyright, trademark and patent.
Copyright is automatic, and protects all original artistic works, including photography, visual arts, film, music and writing. Another person cannot use your work without your express permission. Trademarks are specific business identifiers, and cannot be used by others to make it look like they are associated with that business. This can be extended to marks that look too much like an existing one, or use parts of one. You could not, for instance, market a soda with a typestyle that looked like the Coca-Cola one. Patents protect the design of physical objects. There are two types: one protects the way the product *works* (utility patent), the other protects the way that it *looks* (design patent).
Why do babies and young children add -ey sounds to the end of words (ex: Doggy, eggy ducky)?
I think it's just mimicry of adults talking to them that way.
What is happening when we suddenly forget something, then go back to a previous activity and remember it?
Memory is heavily rooted in context, like the room or environment in which a memory is made. This is called the Encoding Specificity Principle. When you are going about your life trying to accomplish some goal you will occasionally forget what exactly it was that you were trying to do, however it is important to note that this event of fogetting usually occurs shortly after stepping into a new room, or otherwise moving to a different environment other than the one in which you had initially created the memory of your goal. This occurs because forgetting is an adaptive and necessary function of memory. If we remembered everything we ever saw, it would take hours to load a single save file. In this way forgetting allows us to quickly load more relevant memories. And one such factor for determining the relevance of a memory is your environment! Source- [Walking through doorways causes forgetting: Further explorations, Gabriel Radvansky]
How far does a speaker move in and out when it vibrates? And do the air molecules next to it move the exact same distance?
This parameter in speaker design is called XMAX and can be in excess of 2" peak to peak for subwoofers designed to produce high sound pressure levels. Source: worked in mobile audio retail for a number of years.
Why can other animals eat raw meat from a corpse but humans cannot?
We can! The danger comes form they way the meat is prepared before it is given to us. America is notorious for poor regulation of sanitation standards for butchers and farmers. In America it is just safer to assume your meat was poorly handled and contaminated, because it most likely was/is.
Relativity (also difference between general and special) as well as string theory
Special relativity: The speed of light is the same in all reference frames. You can't accelerate to the speed of light. You can't travel at the speed of light unless you're massless, in which case you must travel at the speed of light. Time passes differently in different rest frames. General relativity: As above, plus gravity is the effect of curvature of spacetime around massive objects. This is why it affects massless things like light. String theory: Trying to describe reality in terms of tiny vibrating strings. If successful, would overcome existing problems in relativity and quantum mechanics where these two fields are not compatible. Would be a leap ahead in our understanding of reality. But currently makes no testable predictions. If you want to know more, search. These things are asked all the time. If you want a more helpful response than that, ask a specific question; we have no way to know what your problem with the existing explanations is.
If weight gain/loss is as simple as energy in versus energy out, how do some competitive eaters remain slender?
They are not eating contest level calorie numbers as part of their normal diet. When they train they eat lots of low calorie high volume foods like cabbage and lettuce and drink a lot of water to stretch their stomachs and only eat the contest meals a few times in training for the competition. The occasional massive intake of calories will not make you massively fat, the consistent intake of them does. What they do is not much different than a Thanksgiving or Christmas feast.
Why is there sometimes a slightly enjoyable "shiver" after urinating?
Well, I don't know if I'm doing this right, but since I've wondered myself, here's what I found so far: > According to Sheth, our parasympathetic nervous system (responsible for “rest-and-digest” functions) lowers the body’s blood pressure “to initiate urination.” One leading theory behind the shudder is that peeing can unleash a reactive response from the body’s sympathetic nervous system (which handles “fight or flight” actions). > On the cellular level, the body is theoretically flushed with catecholamines (which you know better as chemicals like dopamine or hormones like adrenaline). Those are dispatched to help restore or maintain blood pressure, Sheth says. But the microscopic energy bullets “may also trigger the shiver reflect.” I know this isn't the 5y-old explanation, but it's the best I can find. Maybe someone else can put this into laymen's terms :) Source is [NBC News](_URL_0_), I have no idea how reliable they are.
How does motion interpolation work?
There's a million approaches to interpolation. One is: have a good algorithm to find consistent "control points" on the image. Corners on places of high contrast, etc. Notice how those control points move between frame 0 and frame 2. Calculate a new intermediate frame by taking the average of (frame 0 warped to put its control points halfway to where they are in frame 2) and (frame 2 warped to put its control points halfway to where they are in frame 1). Another is (closer to things I've done): Train a neural network to try and predict frame 1 given frames 0 and 2 on real 60FPS sources.
Why do we know very little about sleep/dreams?
Dreams are entirely subjective, usually with no outward signs to gather info from. We've only (relatively) recently started creating machines that can read our brains to help us learn more about mental processes. To contrast, we've had thousands of years to study the rest of our bodies.
Why are metals with low melting points (eg mercury and lead) more poisons or harmful?
They're unrelated. Gallium, indium, bismuth, sodium, potassium, rubidium and caesium are all metals with low melting points that aren't particularly toxic. Gallium melts slightly above room temperature. You could have it melt into a puddle in your hand and suffer no ill effects. Indium is a soft metal that melts below 200 C. It's not particularly toxic. Bismuth has a melting point below that of lead. It's non-toxic to the point that pepto bismol's active ingredient contains bismuth. Sodium and potassium have melting points below that of boiling water and both are essential to life. Rubidium and caesium are not very toxic. The toxicity of their compounds is comparable to table salt.
In purely practical terms, what is life like for illegal immigrants in developed western countries? Can they drive? Get married? Have children legally? Get healthcare? Get a job?
I've worked in construction in Toronto for 12 years alongside illegal immigrants from all over the world. Typically there will be an ambitious worker that will take the lead and find a way to get a driver license, SIN or a business number, and start to get work contacts and hire other workers. Those people tend to get by very well, but the hired workers are often given just enough to get by and treated unfairly. It varies from crew to crew so that may be an unfair assesment, but it's the most common situation that I've seen. When it comes to renting an apartment, getting married, and living life in general, almost all of the people I've known have had no problem, but have told me they're always looking over their shoulder and are terrified any time a cop car drives by. I knew a guy that stitched himself up (6 stitches) cause he was scared of going to the hospital. It's much better to immigrate legally, sometimes countries will ban you for life if you're caught.
Why are sites such as Netflix and Youtube able to stream high definition video on relatively slow internet, while other sites struggle to stream that same quality of video on even the best internet?
Compression is a wonderful thing. When you go to Netflix or YouTube, you aren't actually streaming 1080p or 720p. The feed you're getting is highly compressed, and your computer then renders and upscales it once you've received it.
Why do we attribute some quotes to characters, while others to the author?
The difference lies in whether or not the quote is representative of the ideals and opinions of the author. Is it something the character just says, or something the character believes (but the author doesn't, necessarily), or is it something the character said because the author was deliberately using them as a vehicle for expressing that idea? Also, it could just simply be an incorrect citation.
What are the concepts of intrinsic value and instrumental value in philosophy?
Say the only thing want in the world right now is some chocolate. That has intrinsic value, it's all you currently value. But there's a second class of things you value, things that allow you to get chocolate. So in this situation money would have instrumental value, because it allows you to buy chocolate. So you want money, _but_ you only want money to get chocolate. That's the difference.
What is my cat doing when it's looking at nothing?
Perhaps you have mice or insects in the walls and your cat can hear them?
Why do a lot of companies develop apps for iOS first, when Android holds 70% of the 'Smart' Market? (inspired by the new Reddit iOS app)
For many reasons, but the most obvious commercial reason is this: iOS users consistently spend more money buying apps, and buying in-app purchases, than Android users. Even though there are more Android users than iOS users, they spend less money.
What are the advantages of using a Bullpup-Style rifle over a conventional one?
Bullpup rifles provide barrel length of longer rifles(M-16), but overall length closer to carbines (M-4). The barrel length helps increase bullet energy and long range accuracy, while the shorter overall length makes it more manageable, especially in close-quarter fighting.
Why is the movie Frozen seen as a metaphor for homosexuality?
Elsa has a condition that is shameful, and that her parents want her to hide and never let anyone else see. If they could cure it, they would, but they can't. Elsa suppresses her feelings and lives a sad, unfulfilled life hoping that no one figures out the truth about her. When people do find out, they react poorly, and she runs away. But then Elsa decides that she's not going to hide who she is anymore, and lie to herself. She's going to Let It Go and be free, changing her style. At the end, Elsa finds happiness and realizes that people will still love her even if she is different. So yeah. It's a metaphor for being different and alienated, and being gay is an example of that.
Why do months have different number of days?
Does anyone here also use their knuckles to check the months with more and less days?
How the spread on sports teams works when betting?
Team A is playing Team B. If the spread is Team A plus 3.5 then If Team B wins by 3 or less the bettor wins. If Team B wins 4 or more, the house wins. No tie bets, regardless of the rules of the sport.
why did animals grow larger in the past? Is this because of human development? It seems like sharks, birds, turtles, snakes, etc. used to be a lot bigger
We are a short period (relatively) since the last mass extinction event. Small animals flourished because of the conditions and have been evolving since. Some of the largest animals you see now are survivors of that mass extinction. There just hasn't been enough time passed to let evolution take it's course and allow for much larger animals to grow. In theory, there is no reason that in a few million years there couldn't be animals the size of dinosaurs again.
Why are products in airports priced so abnormally high when compared to other businesses?
Because they have a monopoly. Once you're past security, you can't leave to shop at their competition. You have to pay their prices or do without.
Why do the pupils in our eyes dilate when we see someone that we are attracted to?
recent graduate from an optometry school in texas.. this is tied into the sympathetic nervous system if you know anything about "fight or flight" thats this system. An increase in the sympathetic nervous response results in pupil dilation to allow us to take in more visual stimuli if your life was really in danger.
why does one get heartburn after eating specific food?
From what I understand, each body, while very similar, contains moderately different ratios of stomach acid. Some things offset certain balances resulting in heart burn.
Why do companies put so much value into the price of their stock on the secondary market?
A few reasons. 1. They have a legal duty to do their best to deliver a positive return for investors. 2. Issuing more stock to the market is a good way to raise capital. For that to work, you have to have a high stock price at the point at which you sell your stock. 3. Many companies' executives are paid, in part or in the majority, in stock options (the ability to buy the stock) or directly in stock. > I guess they could issue more stock but wouldn't that be bad for current stock holders if their shares become diluted? Yes, but that depends on what your goal is. If you want to just increase shareholder value forever, then you're right, it's a goal with no real reason behind it (aside from executive compensation). But companies know that funding important expansion is more important than keeping a stock price high. It'd be like stocking up on canned food for the Apocalypse, and then refusing to break into it because you are afraid of running out.
How do soda companies get the soda in the can and make the poppable tin tab, without letting the soda go flat?
The top of the can with the tab is all one premade piece, and the can is another. The soda is poured into the can, then a machine "folds" the edges of the can and the top together.
Why do some memories get stronger with repeated thinking and some weaker?
I'd say state of mind. Why else would dreams be so vivid and 20 minutes later no recollection of what the hell happened.
Why aren't leaves the same color as solar panels?
Of course chlorophyll is the obvious answer, because it reflects green light rather than absorbing it. But the next question is "why isn't chlorophyll black?" Some say it's because the plants would absorb too much heat that way, but that might not be true for all or even most plants. The answer may be because plants evolved from a single algae ancestor, and chlorophyll was present in that and met the needs of the plant descendants.
Why would anyone pay money to subscribe to someones stream on Twitch when it's already streaming for free?
Because Viewers know that Twitch Streams are not free. Someone, somewhere, is creating the content and spending time doing so. If they never have any payment for doing so then they will stop doing it. This could be because they are annoyed at not getting paid or because they simply cannot carry on doing whatever it is that makes the stream watchable. Much like the collapse of Social Networks such as MySpace: there is a limit to the amount of free content that people will provide.
How would China devaluing its currency affect dollar denominated debt?
China devaluing their currency would have the benefit of reducing the world market prices for their exports, boosting economic growth, but will make foreign currency denominated debt more expensive to service, since firms (and individuals?) will need to spend more RMB to buy the same amount of (for example) dollars to service their debt. For an individual firm, if the increased cost of debt isn't mitigated by increased export sales, this policy can drive reduced profitability at best or insolvency at worst.
How a website like craigslist still exists after there have been many murders related to it?
Even more murders have been related to the telephone, and yet those are still around. Just because there's a very small subset of people who misuse something, that doesn't mean that the whole needs to be shut down.
I bought a tabletop weighing scale. Why there is this sign written on it? "Not for commercial use"
because there are different (more strict) standards for calibration on commercial scales. these would be scales used for deli/grocery checkouts and stuff. so that consumers don't get ripped off. _URL_0_
Why console gamers and pc gamers cant play together in matchmaking?
Simply, the console players would get crushed. The amount of finite control a mouse+keyboard offers over a controller is pretty apparent.
How come we don't make Italian Holocaust/Nazi Jokes?
Because when the war turned against them, they overthrew their fascist government and switched sides. Mussolini is not given a free pass. The man is often listed among other monsters of history. But in the popular consciousness, the Italian people redeemed themselves, so they didn't bear the same guilt as the Germans or Japanese.
Why do viruses kill living things, if they need a living host to continue to exist?
Accidentally. Often, it doesn't actually end up killing enough hosts as to prevent the spread of the disease, which is what makes them continue to exist. For example, if it made a person explode violently into billions of tiny airborne particles which would then be easily inhaled by other people, and it lay dormant in a person long enough for them to have a baby or two and raise them before it "went off", then it would work just fine at continuing to exist. What you're asking is basically similar to asking "If carnivores need to eat other animals to continue to exist, why do they kill those animals?"
Why do I function less when I get more hours of sleep than usual?
There are two main factors at play here: 1) Your body likes consistency. If it's used to getting 6 hours of sleep, it expects to get 6 hours of sleep that night, and will regulate its daily hormonal cycle accordingly. Messing with that in any way, even if it provides more rest, will make your body confused and stressed. 2) Humans have cycles of sleep that last ~90 minutes. Waking up close to the end/beginning of a cycle leaves you feeling refreshed and alert, while waking up in the middle makes you grouchy and tired. 6 hours is 4 full average cycles; sleeping exactly 8 hours is 30 minutes into a new cycle, and therefore undesirable. If you want to get extra rest, try for 7 hours 30 minutes or 9 hours.
Why MLB parks are different lengths and yet, baseball tries so hard to keep even and accurate statistics with Homeruns
/u/upvoter222 makes good points, but to add a bit on that: A smaller ballpark does not necessarily mean the odds of hitting home runs is greater. For example, Coors Field is actually pretty average regarding dimensions (with an insane 415 feet to straight-away center), yet it's largely a hitter's playground. This is because altitude and atmospheric conditions have a big impact on the baseball. Wind also plays a factor and if a park is situated in a certain position in a bay, you could be finding yourself fighting an uphill battle to get a ball out of the yard. I'm not an expert at how different temperatures and conditions would affect a baseball, so I can't really address how AT & T Park impacted Barry Bonds' homeruns.
How can congress sneak CISA into the NASA bill?
Congress makes its own rules. There are very few rules for Congress in the Constitution. The rest they write themselves. They can even ignore rules they write if no one in Congress objects.
Why do conspiracy theorists often claim that there is significance to words/phrases being spelled/played in reverse?
Conspiracy theorists, almost by definition, find patterns in things that are not patterns, or logic in things that are not logical.
Why do you feel full faster if you eat slower?
It takes some time for the chemicals responsible for fullness to be released and move from the stomach to the brain. When you eat slowly, these chemicals are released gradually and so your brain's levels of them rise gently. When you eat quickly, you suddenly shift from no fullness to tons of fullness, but it's delayed.
If you pour water in front of a light, how does it have a shadow if it's clear?
It's not completely clear, if it were you wouldn't be able to see it. So the part that is deflecting light and hitting your eye allowing you to see it also blocks/absorbs the light and creates a shadow
Why do people feel the urge to shake their leg, jiggle their foot, etc.?
Muscle contraction is the only way to squeeze blood back up from the lower legs. When sitting still, contracting the calf muscles allows the blood to be squeezed up and avoids pooling.
What is the difference between shower gel and body wash?
The primary difference between the two is texture, Gels are firmer and more gel like while body wash is more like liquid soap. Gels also often have more fragrance and "go farther"
Why don't "large", sluggish animals like Crane Flies and naked snails have more enemies?
Slugs, at least, are eaten by a wide varity of species of all types and classes. However, like many prey species, slugs have evolved to produce huge numbers of offspring--and for slugs in particular, being hermaphrodites means both halves of a mating pair can and will bear young. I believe the average litter (if that's the proper term) is around 30, so two slugs can produce 60 more slugs between them. It's also possible that human activities have disrupted and killed off some of the natural predators of these animals, which is why you're seeing a higher number than what might be considered normal.
How can game programming be so amazing?
> it can't be a bunch of "if" and "elses", Actually, yes kind of is. Modern languages have ways to allow you to write a lot of machine code in fewer hand-written lines of code, but essentially it all gets converted back into a set of instructions which all basically get and set register values, test comparisons, and change which instructions to do next. To make the task easier, developers tend to write libraries for other developers to use. You don't need to know the instructions to take to the graphics card because the people making the card wrote them for you and bundled them up into nice libraries for you to call. Likewise, the operating system allows ways so you can receive input and send output in relatively few lines while the complier links to libraries with many more lines of code to do those functions.
How does a computer trash can work ?
The Trash Can/Recycle Bin works like another folder until you empty it. When emptied, the computer will make the space on the hard drive taken up by the file be able to be overwritten. The file will stay there until the computer writes something over it. You can secure delete the trash on Mac, which means the computer will randomly write numbers over where the file was. For more explanation, check out [this link](_URL_0_).
cars like VW Beetle proved that a motor can be refrigerated by air. Why this kind of design never succeeded to be the most popular and water/liquid refrigerated won?
Just because somethings possible doesn't mean it's a good idea. Liquid coolants have a *much* higher heat capacity, and so can absorb much higher amounts of heat from the engine. This is good, because the engine generally runs more efficiently as it's operating temperature increases, but this necessitates a better coolant system to get rid of the waste heat from the engine block, which allows you to get all of the positives of a hot engine, with none of the negatives.
Why is pink considered a 'girly' color?
It actually used to be seen as a very masculine colour, before the 20th century. The idea was that it was a shade of red, and red is a strong colour, representing passion, blood, and other such things.
How the women's only screening of Wonder Women is affected by antidiscrimination laws
Title VII of the Civil Rights Act of 1964 prohibits discrimination by employers "on the basis of race, color, religion, sex, or national origin." However, Title II of the same act prohibits discrimination "based on race, color, religion, or national origin in hotels, motels, restaurants, **theaters,** and all other public accommodations engaged in interstate commerce." Congress made no attempt to enforce gender equity on the Boy Scouts, men's clubs, women's groups, restrooms, or half-way homes for "troubled" women. Gender discrimination is completely legal in the United States in many sectors. Employment isn't one of them, but theaters are.
How can there be any HD videos of WW2, when there wasn't any HD cameras back then?
"HD", today refers to a digital image that is 1920 pixel wide x 1080 pixels high - this is about a 2MP image. Video from WWII is shot on real analog film - silver halide crystals on film. Analog film does have a "theoretical max resolution" that it can be scanned at, and compared to today's HD picture it's very high. 35mm film is estimated to contain about the equivalent of 25MP of information - or about 6000x4000 pixels. So, a 1080 HD scan of a good 35mm analog film print is still losing about 12x the resolution of the original image (converting a 25MP image to a 2MP image).
How does a Frisbee fly?
Bernoulli's principle - Lower air pressure above the Frisbee gives it lift and allows it to stay up. The angle at which its thrown, spin and wind all ad to its direction.
Why do dogs drink out of the toilet, even though you give them fresh water?
As far as the dog's concerned, a source of water is a source of water. All he'll care about is that there's always water there, it's clean (by the dog's standards) and at a convenient head height for drinking. Dogs are also creatures of habit and will keep going back to the same places for food and water just because that's what they're used to doing. If a dog's drinking out of the toilet, encourage him to drink from his own bowl by making sure that his bowl is always kept full of fresh water, that it contains enough water for him, that the bowl is always accessible and that it is always in the same place (preferably close to where he eats and/or sleeps). Also, reinforce good behaviour by giving him treats for drinking from his own bowl.
What's preventing us from completely abandoning paper money going 100% cards or credits like in Science fiction?
Because not everyone is on a card and we would need a system that gives away free banking for everyone to be on a card and then we would need a free system to allowing people to trade between each other. Other wise there would be a lot of people and children who would have no way of having money and would make life harder to force people to have a bank.
Why must government prohibit recreational drug use?
Have you ever lived next to a meth user? I rest my case.
There are, for example, 50 clouds with rain in them at the sky. What makes them all release the rain exactly at the same time?
Clouds are so large that generally one cloud covers the immediate vicinity around you. So it appears that rain starts and stops simultaneously in all directions from the perspective of a person on the ground. But if you look at a rainstorm from an airplane, you can often see pockets of rain and non-rain across a fairly small area. It just isn't apparent from ground level. [This picture] (_URL_0_) is a good example. A person in the center of this storm won't notice significant differences in their immediate surroundings but from an external vantage point the rate of rain varies considerably.
On the back of my dove deodorant, it says to ask a doctor before use if I have kidney disease. How is deodorant correlated with kidney disease??
Deoderants and Antiperspirants contain aluminium. Aluminium is abosrbed by the skin and enters the blood, in healthy people, the level of aluminium found in Antiperspirants is safe as it is rapidly removed from your body via the kidneys in urine. But in people who have kidney problems, aluminium can accumulate in the blood and cause toxic effects .
Why do so many people in america have peanut allergies where as in here in the uk barely anyone does?
_URL_0_ The UK is one of the top three countries in the world for the highest incident of allergy (The Allergenic Invasion, 1999)
How does HD Radio work, and what makes it clearer than non-HD FM radio?
HD radio uses the same type of radio waves as normal radio but the information is digital instead of analog. Analog audio can get warped and distorted as it travels over the air due to interference. Digital audio doesn't have the same problems. A digital receiver only has to tell if the signal is a 1 or a 0 at any moment. Even if there is some radio noise it's still easy for the receiver to tell the difference between a 1 or a 0. With analog, some radio noise can make it hard for the receiver to re-create the audio signal.
Why are planets spherical, is it possible for planets to be Halo or flat edged?
The reason planets appear spherical is because gravity compresses the planet into a shape that most evenly distributes the gravitational force among the planet's mass.
Why do your ears and nose slowly and continuously grow throughout your life?
Because while bone growth stops in early adulthood, cartilage growth doesn't. Your ears and nose are mostly cartilaginous, so they continue to grow as you age. In addition, aging skin loses elasticity and underlying fat pads, making it sag more and the cartilage more prominent.
Why cars like Toyotas cant look like Lamborghinis
I believe body types are copyrighted or trademarked, so you can't just throw a lamborghini body on. Also, the frame of the car would have to change, which means you'd be changing the seating, the engine mount, etc - and since the size of the space under the hood isn't the same, you'd be redesigning the engine also. Not to mention people buy Toyota for different reasons than they buy Lamborghini, aside from price. You have the Lamborghini to go fast on roads, show off your wealth, and make yourself attractive to the opposite sex. You have the Toyota to get the groceries, take the kids to school, and drive to work.
Why is it that even when I'm close to my router, i never have wifi speeds close to what I'm paying for on my internet plan?
A common point of confusion for people when talking about internet speeds is that they are usually quoted in "bits" while the computer measures in "bytes". A bit is a single unit of binary information which is either a zero or a one. A byte is a standard functional unit of information composed of eight bits. As a result the speed the computer will display will be 1/8th of that which your internet provider would be advertising. Obviously the provider prefers to advertise the bigger number and the only way you can tell the difference is by checking the units.
why didn't Bruce Jenner go to jail after the fatal car crash
The investigation determined that it was an accident, not a criminal act. Sometimes shit just happens when people drive cars.
Why does medical research need so much of donated money when pharmaceutical companies are super rich and can afford to do the research themselves?
Pharmaceutical companies make drugs. They do not invent new surgical techniques, new equipment or new courses of treatment. Even in situations where the solution turns out to be different drugs, the reason pharmaceutical companies are super-rich in the first place is that they spend their money on those avenues best suited for a high return. Erectile dysfunction drugs are high return. Curing obscure forms of cancer is not.
Are there gradual forms of depression or is it purely binary?
As someone who is very depressed, it's gradual. Never binary. You have good days, you have bad days.
How did popcorn become associated exclusively with watching movies?
From the Smithsonian magazine: [Why Do We Eat Popcorn at the Movies?](_URL_0_)
How were the transatlantic network cables put in place?
With a really big cable laying ship. There's no need for weighing them down. The cables are quite heavy by themselves. If a cable breaks a specialty cable laying an maintenance ship goes out, finds the break, brings up the cable, and repairs it or splices in a new cable section.
The difference between "Damnit", "Dammit", and "Damn it"
"Damn it" is the proper spelling. "Dammit" is a colloquialism, showing how people tend to pronounce it as if it were one word. "Damnit" is a compromise between the two. I've rarely seen it spelled this way. Aside from that, they all have the same meaning.
When did lobsters become a hot food commodity for the wealthy when it used to be fed to slaves and servants?
From what I understand, they used to be so plentiful that they could be gathered from the shore. When they had to start actually fishing for them their value increased because of the cost of traps, boats, and time.
Last night I had a deep logical conversation with a character in my dream. How is this possible?
Why would you presume it to be not possible? You are, presumably, capable of logic, and the 'you' and 'character' in your dream are manifested by you, so they are presumably capable of logic as well. The only means to measure the grasp of the logic is your own experience, so even if you have a poor grasp of logic, your poor grasp of logic doesn't necessarily permit you to evaluate the logic from the dream as being poor. And if you have a good grasp of logic, then there doesn't seem to be any particular reason why characters made up by you wouldn't also.
Can I just fill up potholes?
You can, but generally you are breaking a law. Or at least an ordinance. Plus, your patch *sucks* and will form another pothole shortly. DIY asphalt patching simply isn't capable of standing up to the sort of abuse that road get -- unless the person doing it themselves is a professional with professional-grade equipment. The fastest way of getting it patched is to call the city/county and let them know there's a pothole there. If it's not reported, they'll never know it needs to be fixed.
Why is it when counting numbers teen comes after the number but every other number after that the number comes at the end ?
The suffix [-teen](_URL_0_) originally meant "ten more than". So thirteen is 'ten more than three', fourteen is 'ten more than four', and so on.
Isn't being a Nazi and being an American a conflict of interest? Didn't America fight against Nazis in WWII? Why are Nazis allowed to exist in America today if they weren't allowed here during WWII?
In America we have very strong free speech laws which means that you can say whatever you want as long as you are not directly threatening someone. You can not ban a political opinion just because it it is deplorable, even if the whole country is against it. We fought Saddam Hussein too, it is not illigal to support him and what he stands for, again largely due to the first amendment of the U.S constitution which prohibits government from banning speech.
Why does sitting in a car or on a plane for over an hour without standing up put you at risk for blood clots, but laying in a bed for 8+ hours a night is perfectly okay?
Laying in a bed for 16+ hours a day will put you at risk for blood clots, along with numerous other maladies like bed sores. Big problem for patients that are confined to beds for extended periods. It's just a matter of how long you're sitting around.
Why doesn't AAA kill all their useless perks and just make membership cheaper?
Those discount deals don't cost AAA anything. In fact, they probably get paid by the partner companies: it's marketing (advertising) for the companies. AAA is essentially selling their customer list, and advertising directly to them. And of course, AAA gets a benefit as well, since their members feel they are getting something more for their membership fee.
When astronauts are in space and they use trusters what are they trusting against to move forward?
Thrusters don't work by thrusting "against" anything. They work based on the conservation of momentum. When you throw something in one direction, what remains has to move in the opposite direction for the momentum of the entire system to remain the same. Imagine standing on a skating rink wearing ice skates and holding a bowling ball. Now throw the ball forward. That will cause you to slide backwards. That's not caused by the bowling ball pushing against anything; it's cause by the fact that, when you push against the bowling ball, you're pushing yourself backward just as much as you're pushing the bowling ball forward (Newton's 3nd law: for every action, there is an equal and opposite reaction). Rockets do the same thing, expect instead of one massive bowling ball being pushed slowly, it's trillions of low-mass molecules of burned fuel being pushed quickly.
why does an analog clock's second hand continue to move, but stay in the same position, when the batteries are low?
It's not a feature, it's that the second hand requires a certain amount of force to be moved. If the motor running the clockwork doesn't have enough power to move the second hand all the way, it just keeps chugging ticking half seconds and falling back to its initial spot. The reason it doesn't stop entirely is because it would cost more money to put in a device that figures out when the second hand isn't moving enough and stop the mechanism. It's not that they have enough juice to move the second hand, they don't. Just because you can lift 50lbs ten times doesn't mean you can lift 500lbs once.
Magnetism allows objects to affect the velocity of other objects (pulling or repelling them). Where does the energy that creates that force exactly come from, since energy can't be created nor destroyed?
In order to move the magnet and the thing it's pulling on to a place where they'll interact, you have to do work *against the magnetic field*. If you put a bowling ball on top of a step ladder, you're doing work against the gravitational field. When the bowling ball rolls off and squashes a pumpkin or something, the energy comes from the work you expended putting the ball on top of the ladder. It's the same thing with magnets. A magnet in a room has some potential energy with regards to all the magnetic things and fields in the universe. Physically moving the magnet to that place is like putting the ball on the ladder. Hope this helps.
Why is the human tongue so strong? Evolutionarily, how did it develop that way?
The tongue is something that often gets taken for granted. When you think about it, it is incredibly important for eating. It's main job (beyond speech) is to move food around in your mouth to the optimal teeth for chewing. Moving a piece of food from one side of your mouth to the other is not in itself very difficult, but when you are eating, your tongue is constantly doing this over and over. It takes a good amount of muscle to be able to do this constantly for long periods of time, so your tongue needs to be strong. In terms of evolution, it can be put pretty simply: Ability to get food is a very strong evolutionary force. They stronger your tongue, the more, different types of food you can eat, which leads to more caloric intake, which gives you a small edge over others with weaker tongues. Over millions of years, evolution will select for individuals with stronger tongues.
Where did the idea of people becoming angels when we die come from, considering that bibically angels are another species altogether?
Its just misunderstanding. Because the origins of the angels is rarely discussed. Honestly most people never talk about those early parts of the bible that explain the angels place in things because its kind of embarrassing.. Like how angels would rape human women because seeing their hair made them super horny. It led to a hybrid race of giants! Yeah... That's where the whole women covering the hair thing comes from... I think this causes some discomfort in discussing them in any detail so people just make up their own shit about them. Basically angels exist to serve. They are tools for God like a screwdriver would be for a person. They rank lower in the heavenly hierarchy than humans so becoming an angel would actually be a step down for a human.
How is all of our poop disposed of when it is flushed down the toilet?
To add a little more detail: Bacteria is added to the pool that can eat the organic (formerly living) material out of the poop. After awhile, the food like stuff is eaten out of the poop. Then new bacteria (anaerobic) is added to the next pool. This new bacteria will eat anything that wasn't eaten before. The anaerobic bacteria is used, because in the next pond, a lot of air is added to the pool, which kills all the bacteria. Then the water is sprayed over charcoal usually to filter out anything else. Finally the water is collected and pushed out into a nearby stream.
Why do energy drinks come in metal cans instead of plastic bottles?
Ever seen a Rockstar or Monster in a clear container? they look really nasty. i always thought that's why they're in cans.
If you buy a $999 computer online during Tax-Free Weekend, are you exempt from taxes?
Under Georgia law, you won't pay sales tax on a computer costing under $1000 during the tax holiday. So, you should be able to go in with $1000 in cash, buy a $999 computer and walk out with a dollar.
why is everybody mad about the Sodastream issue, but not Victoria's Secret which manufactures garments in Israel?
What's so bad about having something made in Israel?
Why do people hunt rhinos for their horns? What do the horns have that you can't get elsewhere?
As in, what do they physically have that makes them desirable? Nothing. The horns don't contain any special chemicals that make them valuable. They look cool though, so they can be used for decoration (which is terrible really because you could make something that looks like rhino horn without killing rhinos. But people want the real thing). In east asian countries, there's also a belief that rhino horn has healing properties, especially for erectile dysfunction, which unfortunately simply isn't true.
how is it that my cellphone gps can still show my live position on a map if I lose cell reception?
GPS does not have anything to do with your cell reception its a seperate radio that communicates with GPS satellites. Your phone talks to at least 3 of them to pinpoint itself and tell you where you are. This is how you can have signal and no GPS and vice versa. Your phone can also use tower triangulation to figure out your location if need be.