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How is it that ~45% of Americans aren’t paying income taxes yet the IRS isn’t arresting them for tax fraud? | For the overwhelming majority of that group, they don't owe any income taxes. I don't know where the exact threshold is, but most people have to earn something like $12,000 in wages before they even have to file, and you can earn substantially more than that but have no tax obligation if for example your head of househ... |
Why is glass the most used material for holding and mixing compounds? | It's tough, cheap and borosilicate glass has a reasonable temperature range. It is also generally unreactive except to strong alkalies and hydrofluoric acid. Most metals will dissolve to varying extents in anything acidic, platinum and gold are expensive and too soft for rough use but are used at high temperatures. The... |
Why are some criminals sentenced to more than one life sentence? For example, why was Jeffrey Dahmer sentenced to 16 life sentences (more than 900 years) when just one would have sufficed? | In addition to insuring the criminal stays in jail for as long as possible, perhaps there is some incentive to get multiple convictions because then it officially closes the case. If Dahmer killed Bob, Steve, and John, but was only officially convicted of killing Bob, then Steve and John's murders remain officially unr... |
How is only the end of my one strand of Christmas lights, opposite the power source, lit? | You'll notice a stand of light has 2 wires at the end, but somewhere in the middle to the beginning, there are 3 wires. Basically this separates it into 2 stands of lights to aid in burned bulb finding, and reduce voltage drop from having too many bulbs in a series. |
Why do your sides hurt when running if you're out of shape? | You have muscles there which don't get used very hard very often outside of an exercise context. When you use them intensely, they hurt until they heal. They also get stronger.The reason is how you breathe and the muscles involved. Your diaphragm is an endurance muscle that can do its job under stress for a long time t... |
On what basis are stores able to request that customers all leave their bags with staff at the counter? what happens if it gets stolen? | relationship of proximity", and "fairness" Is a bag likely to get stolen? Obviously these things happen. They should prevent it. Ideally this would involve keeping the bags under the counter or something. "Relationship of proximity" basic means is there some sort of agreement in place or legal expectation. Once they re... |
Why jet engines on planes don’t have a grill on them to prevent things like birds getting sucked in. | I work at an airport helping to prevent bird strikes. The reason I got from my superiors/plane experts was that a grill or a fence type of device across the engine would prevent enough air from getting in, even if it's very thin mesh. The other reason is that it's highly likely a bird would crash through anyway: at hig... |
Why does blue cheese in a restaurant always taste better then blue cheese in the store? | Shop cheese is usually sold before it's properly ripe so it gets a better shelf life. Things like Stilton and the soft blue cheeses should not be rock hard in the middle. |
Why does closing a credit card account hurt your credit? | It hurts your score for a number of reasons: Credit utilization goes up, meaning the percentage of your balance relative to overall credit line. This is one of the biggest factors in credit score. Let's say you have a $1000 balance on your cards, and your 2 cards have a total credit line of $10,000. Your utilization ra... |
How is it that Martha McSally can just be appointed to a senate seat? She was just beaten in an election! | Each state has two seats in the senate. Only one of Arizona's seats was up for election in 2018. The other seat was previously held by John McCain until his death a few months ago. The state's governor appointed a replacement for McCain until 2020, but his replacement chose to step down, so the governor now appointed M... |
Why the US Federal Reserve is rushing to increase interest rates when they have not been increasing them for years? What is the reason behind the urgency? | They aren't 'rushing', per se.They've actually been raising rates slowly since ~2016 or so. This is not the first increase. They didn't raise them before because the economy is weaker. Now that the economy is strengthening, they believe there is a risk of it overheating. The reason this one is getting attention is beca... |
Why are there so many videos from Americans high as a kit after they got anastheatics, but not from other countries from around the world? | I feel like most of the time it's exaggerated to some degree. I've been put to sleep for a couple surgeries and just woke up groggy and nauseaus. I know other people who may have been just a little loopy when they woke up but nowhere near the way people in these videos are acting. |
Why is it so easy to take out loans and credit cards in children's and young adults names in America. | It is generally not easy to take out loans or credit cards in children's names. Someone has to lie on the forms to do so. As for young adults. They are the ones most in need of loans and credit cards as they are starting their life on their own, or starting their college education. So those things HAVE to exist in orde... |
How do touchscreens work? And why do some surfaces work while others do not? | There are several ways to make touch screens work. The two major ways are pressure and capacitance. Pressure sensitive touchscreens work exactly how you think they do. You push on them and sensors detect where this pressure is. These are great because they are simple and don't require special materials. They can also w... |
How exactly does the “Year 2038 Problem” pose a threat to us in the future? | It's hard to say exactly because the bug can crop up differently depending on how the software is written. Basically, any date after 2038 could be interpreted as happening in the 1900's. That could cause the software to outright crash or simply give wrong answers when doing date calculations. It all depends. |
Why does our voice sound different to us when it's recorded? | Part of what you hear naturally is actually the sound as it traverses the bones in your head, the effect on the soundwaves gives them a deeper base. When you record your voice, the recording device doesn't have the vibrations from your skull -it only picks up the sound traversing the air. No deeper base line. Your voic... |
How do bails bondsmen make their living? | It's isn't a great deal of profit, but it's a very secure business model. Once you appear in court, the court returns the entire amount of the bond to the bondsman. So that ~2-10% is pure profit for them, and with the dollar amount on bonds/bails gradually increasing, and the number of people needing them increasing, i... |
What is the difference between an architect and an architectural enginner? | Architectural engineers have studies that focus more on the structural side of things than normal architects. Depending on what country and studies you follow they can differ. Where I'm from you have architect, engineer architects, civil engineers. Both architecture studies allow you to become an architect. They design... |
What will happen if you get the wrong bloodtype in you? | i'm pretty sure if the blood types don't match your body will start fighting the unrecognizable blood which is life threatening. your original blood cells might tear the new blood cells apart and the contents will leak into your system and cause serious damage.edit: fixed a thing |
What does the 9/10 mean after gas prices? | 9/10ths of a cent more than you expect to pay. It's a way of deceptively charging you more.Its a remnant from back in the day when gas was super cheap. In the 1930s the govt imposed a gas tax of 1 cent per gallon. Seems now like not much but back then a gallon of gas only cost like 15 cents so a 1 cent tax was really a... |
If a driver runs from the cops with a passenger(s) in the car do the passenger(s) get charged too? | it depends. if the driver was running away due to crime, the passengers could be convicted of being an accomplice. if they're simply just running for no reason, then they may just be a innocent bystander. |
why are all pairs of double A batteries inserted in opposite directions in electronic devices? | Batteries are connect in series in devices. To simplify the design one of the sides of the battery compartment is a flat strip of metal that bridges the poles of the battery. If you designed the device with the batteries lined up side by side you would need to run a wire or strip of metal to the other side of the compa... |
Do animals suffer from shrinking gene pools? | Absolutely, it's called a genetic or [population bottleneck]. The first animal that came to mind is the cheetah. |
What is the point of bowling shoes? | The point of bowling shoes is not sticking to the floor. Bowlers want a smooth delivery when throwing the ball, if the shoes stuck to the floor as their weight kept moving forward, after their foot is planted, they'd fall forward or at least be off balance. Bowling shoes allow them to maintain their center of gravity a... |
What causes the moon to shine so incredibly brightly tonight? (Central/Eastern Europe) | Noticed this as well. I think it had to do with the fact this full moon happened on the longest night of year. Usually the full moon comes up at dusk, but last night it came up when it was pitch black outside. When the moon is low over the horizon it looks bigger and draws our attention more than if it's directly overh... |
Why do old black-and-white films look sped up? | Not sure, but I would guess, old cameras record less images per second So to reach the fluent movement of film , you'd have to speed up the original movie. |
why is it easier to sneeze when looking at lights? | It's called the ACHOO response or Autosomal Compelling Helio-Ophthalmic Outburst. Yes really XD There's some genetics involved apparently which is why not everyone does it. And the actual process isn't that well understood. |
If gravity is always pulling everything closer how is the universe constantly expanding? | The universe is not expanding, that's a bad description. The universe is instead slowing down such that the time it takes to get from Point A to Point B is increasing and not just between those two points but every point in the universe. So it only appears to be expanding because trips are taking longer between points.... |
Why do doctors generally have bad writing? | Ahoy, fellow redditor. Yer not alone in askin', and kind strangers have explained: 1. [ELI5: Why do majority doctors have such a bad hand writing? ] ^1. [ELI5: Why are doctors associated with bad handwriting? ] ^1. [ELI5: Why do doctors have such bad hand writing? ] ^1. [ELI5: Why are all doctor's handwriting so messy,... |
why do planes use wing flaps to slow down/change direction mid air instead of the airplane equivalent of "easing off the acclerator"? | They use both techniques. In fact if they have lots of time to slow down, it's more efficient to just slow the engines. Flaps are then used *because they increase lift at low speed.* Special slowing flaps called *air brakes* are also installed but aren't used much. For turning, they can turn by reducing the speed of on... |
Why is Christmas Eve celebrated in Europe and not as much in the US? And why is Christmas Day celebrated in the US and not as much in the European countries? | Most people here that I know celebrates christmas day/ boxing day. Not so much eve. I think it's a southern European thing ri celeste the eve more than northern/ central European thing |
If some vitamin supplements like calcium or iron are minerals on the elemental chart, why do vitamin supplements have expiration dates? | They need to be in a form that is accessible to the body. For example pure calcium would likely burn you if you tried to ingest it os we consume it in the form of compounds where the calcium is bound to something. Over time those compounds may change into other forms that our body can't absorb hence the best before dat... |
Why do they sell things ending in 99 cents and not round it up to the nearest dollar? | The reason they do that is because it's more appealing to the consumer, even though it's only a penny, it still comes across as a bargain, or a 'win' to the buyer |
Why Are Some Motorcycles So Loud? | It's been said that loud pipes save lives. I don't really agree with this notion, but if even one person was spared from getting run over or off the road by a inattentive driver, then I guess it is not a false statement. I ride all the time and honestly when I take out my baffle, I have to wear ear plugs. When I am on ... |
Why do some animals have their eyes on the side of their heads but not humans? | It's important to note that humans probably did **not** evolve forward-facing eyes with good binocular vision to help us be better predators. Humans may be apex predators, but our ape cousins are not, yet they still have front-facing eyes with good binocular vision. It probably evolved to help us with *brachiation*, wh... |
If pills can provide all vitamin and mineral needs, what does the label mean by "does not replace varied diet" exactly? | It's because vitamin supplements can't replace all the other micronutrients you need like bioflavonoids and many trace minerals that essential to optimum health |
Why is heroin the "usual" opioid of the streets? | It's incredibly cheap. Most people that I know personally who've been addicted to or used heroin started out with prescription pain pills. Once that habit becomes too expensive they start stealing and cheating. After they've exhausted those options they often start using heroin because of how insanely cheap it is compa... |
SSD’s compared to HDD’s | HDD's are cheaper, while SDD's offer faster data retrieval. I'm not sure, but I would imagine a PC would boot faster from a SSD. With SSD, you don't have to worry about mechanical failure of a disk drive , but I'm sure power spikes/outages could still corrupt files within the OS just like a disk drive. Because this is ... |
What exactly causes sudden, explosive bursts of productivity, usually cleaning-based? | A study was done at some point and they cited that the number one activity the college students polled stated they used to procrastinate was cleaning. So there's a chance you could be procrastinating on something but just not consciously. |
why do citizens of Taiwan call themselves "Taiwanese" rather than Chinese, even though their government is the "Republic of China"? | We have a cultural/regional vs official split in many nations. For example, the Scottish people in Great Britain. Actions like this are in some ways showing resistance to a governing power who they feel doesn't really represent them, neither culturally or politically |
What’s that tingly feeling I get when someone standing/sitting behind me is about to touch me? | The tingling is technically called ASMR: autonomous sensory meridian response. It's not very well studied, so we don't know a lot about it, but it's an experience characterized by a static-like or tingling sensation on the skin that typically begins on the scalp and moves down the back of the neck and upper spine. It i... |
What does DRM-free mean? | DRM stands for Digital Rights Management, and it's software that restricts what a user can do with digital media to prevent them from making illegal copies. The problem is this often means it also restricts them from doing things which are legal, or at least makes it more awkward. The advantage to having stuff DRM free... |
in the Monty Hall problem how exactly does the act of switching increase your odds? | The key is that the host is aware of where the prize is hidden. So after you pick your door, he will knowingly remove a door that has no prize behind it. Without that knowledge, the odds would remain 1/3 for each . Anyway, you choose your door at 1/3 odds.Let's say it is door number 1. That means if the car is behind d... |
Why can't we see the moon's surface well enough to see lunar lander sites, but we're able to produce deeper space images with orbital telescopes? | The atmosphere really clouds our vision . It distorts what we see and how far we can see, orbital telescopes don't have that problem. Modern telescopes can see the moon's surface rather well though, but how well the details can be distinguished is limited by the atmosphere. |
how do computers know how to do math? | You don't need to teach software how to do math, because math is implemented at a hardware level. There's a piece of circuitry in a CPU called the ALU which does, well, arithmetic operations. Adding, subtracting, etc. |
If light is mass-less, what is keeping it from having an infinite velocity? | Maybe not the answer you were looking for, but what made the 'speed of light' thing click for me was this: The speed of light itself isn't a boundary. It isn't like the speed of sound, that can be surpassed. The speed of light is the fastest speed that anything operating in the laws of our universe can travel, and ligh... |
Why is it that when we look at something in the dark it’s easier to see in our peripheral vision than looking directly at it? | The *fovea* is a little pit on the retina which contains densely packed cone cells and about half the nerves in your eye; this region is responsible for the sharp focused region in the center of your vision. The fovea is almost nothing but cone cells, though. Cone cells are responsible for color vision, but they don't ... |
What's is a "bear market"? | Possibly why there's a figure of a bull on Wall Street, since the traders would rather see a bull market than a bear market. |
What really is depression? | There are the 2 types: depression caused by a bad event and chemical depression. Sometimes related, sometimes separate. One thing to understand is that we have various chemicals that regulate mood; dopamine, serotonin, adrenaline, oxytocin, and many others. Various amounts of each cause you to feel certain ways and emo... |
my parents live near a lake. It's frozen, cause winter in Canada, and it makes this weird low pitched hollow noise. What is it called and what causes it? | I know this noise and for some reason I believe some locals did have a name for it but I don't even know if it has any proper name. I'm trying to recall a memory of like an old uncle saying a 'howl' or 'din' or something like that. A 'Yawl'? Maybe find an old couple. I want to say 'yawling' ahh.. something. But again, ... |
What makes things spicy? | Like /u/HighHopesHobbit says, capsaicin makes *peppers* spicy. In most diets this is the most common chemical source of the flavor. However, there are a few exceptions. For example, wasabi is not made with any chili peppers . It, along with its relatives horseradish and mustard, get their spiciness from [allyl isothioc... |
Why do fans make air cold? | They don't make air itself cold. They help the moisture on your skin evaporate, and as evaporation requires energy, it in turn cools you. If it's a really humid day, a fan might not feel very good at all, as the air has a high moisture content, and thus it can't really evaporate too much, if anything. |
if someone lost all feeling in part of their body, would they still be able to consciously move that part without feeling themselves do so? If so, what would that be like? | You could still move your limb as long as the motor connections are intact, but you couldn't feel if you broke anything on impact. That's important. Pain is good for keeping us alive. |
Why/how do grains and legumes, when combined, form a "complete protein", nutritionally speaking? | Proteins are made up of amino acids. Your body needs amino acids to function. Some amino acids can be produced directly by your body. But, there are 9 specific amino acids that your body needs that it can't produce. A complete protein provides all 9 of those amino acids. |
Why does the cold air feel "cleaner"? | I hate being cold. But there's something about a cold, void breeze running across you that just feels so humbling. It's so silent out in the country. Nothing going on. It's like a closer feeling when you stare blankly into the stars and kind of get taken out of yourself and realize how small you are. |
How do touch lamps work? Recently went home for the holiday and my nephew had one. One of those touch anywhere and it turns on lamp? How does that happen? | What's fun is touching and holding the lamp, and then when someone touches you , the lamp switch activates. The lamp can detect a change in capacitance in you if you're holding onto it.There are a number of ways. One simple way is to simply use the outer case as an antenna. Have you ever touched the input pin of an amp... |
The different types of bankruptcies, how you qualify for them, and how they affect your credit. | In chapter seven you only need to show up for one hearing, nod your head at the appropriate time, sign a form and you're out of there. We did it right or nine years ago and, back then, it cost about $900 plus a filing fee. It wrecks your credit but we still were making a lot of money and just paid cash for everything. ... |
How do kittens know to do their business in litter? | They don't. You train them to do it. Usually by setting them in the litter box right shortly after they finish eating. You can also add special attractants to litter to make cats more interested in it. It helps that cats like to urinate/defecate in quiet secluded areas where they can bury their leavings.They get litter... |
Why are there no big insects? | Insects don't have lungs like we do, they absorb oxygen directly into their tissues. Their bodies can't support getting any larger or they effectively suffocate. In prehistoric times the Earth had a much higher % of Oxygen in the atmosphere, that is what allowed for gigantic insects like huge mosquitoes and giant milli... |
How come a 1°C variabilty in global temperature makes such huge impact on the planet? | Because it will cause a positive feedback loop and a runaway chain reaction of carbon emissions. 1 or 2°C itself isn't so bad. It's that the 2°C causes a bunch of ice to melt which releases more carbon causing more heating the next year which makes wildfires worse which causes even more carbon emissions. It's about tip... |
Do I have to swallow a pill whole? can i break it up into smaller pieces and then swallow it? and why or why not? | It depends on the pill: * They can have really awful taste* They can have a coating that takes long time to dissolve, hence releasing the med slowly. If you break it, it may be absorbed too fast, which can lead to lower effectives or outright harmful effects.* They can have a coating that doesn't break in your stomach,... |
How do rockets keep going in a straight line during takeoff and landing (SpaceX)? What prevents them from going sideways? | Falcon 9 has three sources of control authority: Thrust vectoring of main engines. Cold gas thrusters Grid fins The main engines control the ship kinda like you would balance a broom on your fingertip, it's called an inverted pendulum. If you want the rocket to go to the left, you move the bottom of the rocket to the r... |
What is there to stop food/drinks manufacturers from outright lying about the ingredients and nutritional information of their products? | I used to work for a cookie baking company. I was the quality control supervisor and I had to run quality checks and submit COA's to some major companies, like a well-known weight loss company I shall not name. You tend to watch your butt on stuff like that. I also did the nutritional labeling ingrediants list and you ... |
How do phone/computer chargers work? | You have 50 or 60hz AC coming in, it goes through a full bridge rectifier to convert it into high voltage DC. Now there's a big capacitor to store that charge. Next some transistors chop that high voltage DC up into high frequency AC pulses, which goes through a transformer to convert it into low voltage AC. This is th... |
How high do dust particles levitate above the surface of the moon? | Dust particles don't levitate above the moon's surface. Even if they were disturbed by the astronauts walking around they would pretty quickly fall back to the surface and wouldn't just hang around. Even then, assuming that there were some dust particles that hadn't fallen down yet, there would be far less of them than... |
How does PNG compress an image without a loss of image quality? | Lossless data compression like a PNG or a ZIP do it is done by taking out as much **redundant information** as possible while still being able to reconstruct all the information later. For example, if you had an 16 pixel wide, 1 pixel high image that's completely black, a raw uncompressed file would store the informati... |
Why and how does earwax form? | As others have said, it's a mechanism to keep the ear canal clean, and actually one should never have to clean one's ears as the wax is excreted regularly and transported out of the ear naturally. That doesn't stop me from using every pen cap I see as a tool to scrape it out. If you start doing that, don't go too deep,... |
Where can't you get cancer? | I would like to point out that although it is *possible* it is very *rare* to get cancer from the neurons in your brain, which do not reproduce after a certain point in your life. The vast majority of brain cancers come from glial cells, which *do* reproduce, albeit very slowly . Because neurons never produce after a c... |
Why can’t we flush paper towels down the toilet? | Because paper towels don't dissolve like toilet paper does. Toilet paper dissolves fairly quickly, but paper towels can cause blockages in the pipes very easily. |
Why did WWI happen? | The assassination is what put the gears in motion that led to the war, but there were a multitude of reasons that the war broke out. This was an era when nationalism was at its height in Europe and when everyone thinks their country is the best they won't shy away from a war. In its simplist form that was WW1. Franz Fe... |
How does fat leave the body? | Fat is made of carbon and hydrogen. It burns in the presence of oxygen. The carbon joins the oxygen to make co2 and the hydrogen joins oxygen to make h2o . You exhale co2 when you breathe and you get rid of h2o when you pee. 1 pound of fat turns into 1.07 pounds of water. So it is possible to burn fat and not lose weig... |
When someone rubs their fingers together rather forcefully for a while, why does black residue start to appear? | It are dead skins cells, plus salty sweat. It's the skin cells which have been rubbed off and rolled into small balls, which all clumped together and are visible because of the collective size. |
Why do plants like peppers and chillis have spicy fruits? | Hate to be that guy, but the whole mammels dont eat them and birds do is inconsistent with real world tests. Basically like humans, mammels in areas with peppers learn to tolerate the heat. Yes if you put a mouse from a lab with a Carolina reaper it won't eat it. But put a mouse from an area where the peppers naturally... |
why is blue so rare in nature? | Blueberries? Cornflowers? Lots of birds? Heck, indigo was the first real clothes dye that humanity used, blue-colored cloth turned up much earlier than other colors. Generally, plants are green because that's the color of chlorophyll and efficient conversion of sunlight into energy. Other colors are used by plants to a... |
if hand sanitizer kills bacteria and virus, why not use it to treat small infection e.t.c. instead of something a doctor would prescribe? | Hand sanitizer kills things *on* your skin that you've briefly come into contact with, it doesn't dig *into* the skin to treat any sort of infection that's gotten under the surface. For that, you want actual medicine that will absorb & linger long enough to kill off the baddies.Hand sanitizer works not just by contact,... |
Why do ceiling fans have odd numbered blades? Normally I only see them with 3 or 5 blades. | Ceiling fans are commonly available with single blades up to 8 for residential purposes. It's just a matter of personal preference. |
Why does tea help you feel better when you’re sick, but coffee doesn’t? | But isn't coffee a kind of a tea? I guess that there is some kinds of tea that make u fell better explained above), but not all of them.Do you drink coffee black, or do you doctor it up? What kind of tea do you drink?', "I'm curious about this myself, is it the caffeine? |
How did Kwanzaa develop and become so widely known as a new holiday nationwide in such a relatively short period of time? | I know top comments are for answers, but I don't have anywhere to put this question ? Is Kwanzaa really a big thing ? I live in Canada, and have never seen it mentioned there, and was in new York yesterday and didn't see anything about it despite walking through historically black neighborhoods. |
What causes “post-concert depression”, or the feeling of mild depression after a very fun or big event you participated in? | This could be a form of or similar to Travel Disappointment. Its the idea that things don't live up to expectations, or are are very fleeting and gone, after the long period of buildup and excitement before the event. Basically it is depression. |
why if i pinch a battery by the two poles (+and-) i don't get electrocuted? | Your skin has a very high resistance. There is a story about a fellow that got killed by a 9V battery. I can't say 100% if it is true or not but the story is instructive regardless. Here it is as I remember it . Some fellows in the army were getting training on electronics and the instructor told them that skin has a v... |
how does something release energy? | Energy is a very real thing. Everything is just different expressions of energy, even matter. Einstien's famous equation E = mc^ doesn't actually say that you can turn mass into energy or vice versa, it's actually saying that mass is a property of energy. Matter is just a particularly dense and stable manifestation of ... |
How can Ford get 140Bhp out of a 1.0ltr Ecoboost engine yet my 1.5 VW engine only puts out an extra 10Bhp? | Any modern engine leaves a lot of power on the table in the computer tunes. You might be able to find a plug in chip / cheap program flash that'll really wake up whatever VW you drive without even poppin the hood if you're after more power |
How did chemists synthesise/discover artificial flavours/sweeteners? E.g how did they know a particular compound would taste like strawberry? | It doesn't taste like strawberry, it smells like it. Most artificial flavors are more aroma than flavor, and if you had it side by side with the actual flavor it's trying to ape, you'd realize it immediately. Banana flavor, to me, tastes like how banana peel smells and I find it absolutely repulsive because I tried to ... |
Why do so many commercial office buildings leave the lights on in every office all night? | Some business are more proactive about saving energy than others. For the reasons the others have mentioned, security and light for cameras, some companies just leave the lights on. Others invest in equipment that can remotely control the lights and turn them off at a specific time or turn them on if motion is detected... |
In the Apollo 13 mission, how did the command module become freezing in the return trip from the moon? | > it's incredibly hard to radiate heat away from objects in space for the most part just simply due to it being a void and there being nothing to convect the heat to apart from a small amount of solar wind on the scale of the space craft I may be misreading this, but you seem to think the radiation is slowed by the lac... |
How come it's not illegal to force children to strip for corporal punishment/spanking? | Laws only make something illegal, the absence of a law doesn't necessarily mean that specific act is legal. So far, only 31 US states have made corporal punishment illegal in public schools. That's pretty much the extent of the laws on the topic of corporal punishment. No states have made corporal punishment in the hom... |
Why do humans need to eat food when we can get nutrients from vitamins and supplements? Could a person live on just vitamin and supplement pills? | They looked at it with astronauts, they found out that even though they gave the correct nutrients they discovered that the body's reaction to this as though it was starving. So you can live on vitamins and supplements then you need to add a bulking agent to stop the body from going into a state of starvation. |
Why do models of the solar system always show all the planets and objects orbiting on a flat plane? | Because they pretty much do. All the planets except mercury orbit within a tilt of 3.4 degrees of the plane of the solar system as defined by Earth's orbit. Mercury is an oddball at 7 degrees but that's still not terribly far off. Pluto and some of the minor planets are significantly out of the plane, but most of the p... |
How come planets that have cores of liquid metal/rock/other compounds, thousands of degrees hot that stay hot for billions of years? | Space isn't cold, per se. Vacuum is one of the best thermal insulators . In essence, the vacuum of space acts as insulation which only radiated heat passes through.When you have that much “insulation”, the heat dissipates very, very slowly. Friction from movement within the core also generates some heat, but the majori... |
How it is possible to understand a language but not be able to speak it yourself. | Language is one of the most complicated things we do, and it needs a lot of practice. You can know a language and its vocabulary, but if you haven't spoke it for years, you won't be able to form sentences coherently. It's just like walking; you know how to walk, but if you been sitting on a chair and haven't walked for... |
How does a relatively small transformer fire light up almost an entire city? Also, why is it blue? | The small transformer is connected to a bigger transformer at the nearest substation. This much bigger transformer is feeding the short-circuit. You don't get the same energy from a short circuit on your outlet, for example. |
How do google "index of" websites work? | directoryname" and a list of "filenames". Including "index of" will discard all these "better" results, since the term "index of" is not a term on most of these sites, but the autogenerated directory index will most likely have "index of" as one of the first words on the page. EDIT1: the traceroute and ping tool have n... |
How does Electricity find the path of least resistance? | All the electrons in a circuit or wire are 'pushed' together and flow as a continual stream like water through a pipe. This 'pushing', or electrical pressure is called voltage. The flow of charge is called current. Now resistance is the opposition to flow of charge like if you had water flowing through a more narrow pi... |
Why do symptoms of the common cold change as your body gets over them? | In the very beginning, the cold virus has found a home in your throat or nose and your body's defenses against are limited. Because your body hasn't yet been trained to tag the virus for disposal, it's operating with a degree of camouflage and infects cells and begins to replicate quickly. You'll get irritation around ... |
how can a solar roof be cheaper than a regular roof? | Technically because it helps pay for electricity over its lifespan. However normal roofs + panels are a much better option than teslas options.[Here is a comparison by forbes.] The Tesla Solar Roof costs $55,600 installed The Federal Tax Credit reduces the installed cost by $14,200 The net cost of the Solar Roof after ... |
Why is it so difficult to wake up in the morning? | Good question, it takes me hours to fall asleep every night, yet when I wake up it's impossible to get out of bed and i can fall asleep again within seconds |
How is Google Photos able to give you unlimited storage completely free? | As an incentive to sign up for a paid package for Google Drive. giving you free storage for pictures allows you to see the convenience of using Google to back up all your stuff. Most people won't even use that much space, so although it's unlimited, most people won't use that much. |
Lids that pop once the jar is opened | It doesn't need to be a vacuum as in zero air. It just needs to be less than atmospheric air pressure. Which is achieved by heating/pasteurization as already mentioned. |
Why does one side of my face always get more congested than the other whenever I get a cold, sinus infection, etc.? | Same here. However, an MRI of my face shows deformities in nose and sinuses, so it's easy to see and understand my problem. Decided not to have surgery. |
How are 3D movies made? Are the movies also edited wearing 3D glasses? | What you refer to is called stereoscopic vision which requires a movie to be shot on two different films in order to take the differing perspectives of human eyes into account. Traditionally this can be achieved by using two camera with a lens centre distance of 6 cm which equals the medium distance between left and ri... |
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