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please ELI5 when exactly photographers require someone to sign a model release form. | Canadian ex-wedding photographer here. But honestly, you'd probably be better off getting an answer from a lawyer than a photograper. Short answer: to cover my ass in case of well, anything. Long answer: for purposes of using clients' photos on a web site, in an advertisement, a portfolio etc. With a model release they... |
If a hospital already bought an MRI machine why does it cost money to run a scan? | Because MRI's are expensive. You could go buy a house and just let me stay there for free, right? Since you've already bought it? The expense goes beyond the cost of the machine: * You need people to run it. These people are educated and get paid well because it's a complex piece of machinery. * You need people to read... |
Why are there so many transgender people in Thailand? | Are there actually more per capita? Or does it just appear to be more because that's something the country is known for and they are more open about it? |
EL5: How would we be able to inhabit a "Super-Earth"? | They're not really hoping at this point that humans could live there. They are just hoping to find a planet that is capable of supporting life at all. The life that would evolve there, if any, would obviously have to be adapted to the higher gravity. Seeing life that evolved separately from us on another planet could t... |
why does water from the bathroom tap taste different to water from the kitchen tap? | Dunno about other places, but in the UK, most kitchen taps are fed directly from the mains water into the house. It's usually the first T-piece straight after the mains stop-tap. This is so that drinking water has the least probability of being affected by plumbing faults. Other cold taps are quite frequently fed from ... |
Why does it matter if our government spies on us, so long as they don't release the information to the public? | They are not as professional as any doctor learning about your history. Besides, if they spy on us, they can use that information against us in whatever way they want. It's about privacy. We all have a right to privacy, and we should never give that up.[Basically what Snowden says in his AMA] > Well, when we look back ... |
In the extremely unlikely event of every ward electing an independent MP, who would become Prime Minister of Canada? | In Australia , the Prime Minister is simply whomever has the support of the majority of elected members in the lower house. By convention and typical practice, this is whomever is leader of the party with the majority or else of the party in a coalition that has more elected members than its partners. However, in the u... |
When speaking, why do we automatically revert to "Uhh" and "Umm" when we stop midsentence trying to think of what to say next? | It's a filler that gives indication to your speaking partner that you have not finished talking, but you need time to think about what to say next. It's a common feature in many languages, but the exact sounds are different in different languages.Every language on earth has this. In American English, it's "uh/um", in B... |
What does it mean when a US citizen considers them self "sovereign"? What's the legality? | There is no legality to it. There are a group of people who use bizarre legal theories and lots of gibberish paperwork to tie up the courts, and are occasionally such a nuisance smaller courts don't want to deal with them. Every time someone has put the effort into unravelling their nonsense, they lose, badly, and many... |
What is the speed of current? | I always find it easier to use the method of comparing it to hydraulics to help me wrap my mind around it, since there is so much in common. Someone else made a similar post, but I would liken it to a full garden hose hooked up to a tap, under pressure. A bump in pressure at one end, assuming a perfectly rigid hose, wo... |
Why does the US keep arming rebels when years later history shows those same rebels kill us with those weapons? | The US arms rebels that help further their interests. For example, the rebels in Syria, were armed and trained by the US, Qatar and the Saudi's to topple the Assad Regime. Now a lot of those rebels side with ISIS. Then again, even ISIS serves the US's interests in destabilizing the region. And to be frank, the arms ind... |
How is Starbucks' reward system better than the old system? It seems like you have to pay more to get the same as before. | As a barista/cashier who has to deal with customers doing separate transactions for every. single. item I'd always wished they would update their system to be based on money spent or items purchased, instead of earning just one star per transaction. But this new system is going to anger people since many of them are go... |
What are the dangers and warning signs of Mob Mentality? | Dangers: Death, destruction of property, injuries. Warning signs: People start acting like they're in a mob. People start calling for someone's death and someone else mentions that they have rope/a gun. A large crowd of people starts getting really upset.Just make a rational comment on a post like the one about the pup... |
Why don't we just dump our garbage into a magma pit? | Well, there's the practical consideration of distance: I live in Vermont, USA. The nearest landfill is 20 or 30 miles away. The nearest magma pit is considerably farther. |
why don't we have more roundabouts since they minimize traffic? | They are not good at regulating an intersection with an uneven distribution of traffic. Take for instance, a 4-way intersection with a traffic light. The timing of the signals can be set to give the direction with higher traffic volumes a longer green. This can be adjusted for different times of the day, to accommodate... |
Why songs are generally 3~5 minutes long. | This is more often true of pop music, country music, and radio stuff in general. Most metal, death metal, black metal, and other forms of extreme music don't follow these predictable formats ", 'Jethro Tull's "Thick as a brick" laughs at you. In all seriousness though, most songs would get really repetitive and boring ... |
Why can't music artists be prosecuted or investigated for mentioning illegal activities they may or may not have committed, in songs? | They can't be prosecuted for mentioning illegal activities because it's not a crime to talk about illegal activities in the past. They can be investigated, though. If someone says in a song that they murdered someone an the authorities have reason to believe it might be true, then they'll investigate. |
how can picking a lock break the lock? | One problem you can run into is if you turn a deadbolt, or any pin tumbler lock that can turn at least 180 deg, the top pins can fall into the lock core. There's usually a little grove in the bottom of the core--I think it's there to manage dust or something, I could be wrong. Anyway, if you turn the core 180 deg, the ... |
Why is that, all of a sudden, we have teachers getting arrested for having sex with minors? | I think its like a lot of the news out there. Crime has always existed but now we have a million ways to share it. I have an older friend that was molested by his teacher in the 1950s. It happened then, but in modern times a teacher is more likely to get caught and the news makes sure we all know about it. Back then it... |
How do massive schools of fish swim around without just bashing into each other | The fish follow a few simple rules like: stay behind the fish in front, keep 2 buddies on either side, avoid threats, etc. On a large scale this leads to extremely cooperative behaviour even though there are so many different individual parts. It's a type of dynamical system. Read [swarm intelligence] |
do people who shoot guns in the air get killed by those bullets? If not why not? | [They sure do - all the time in fact.] A particular person shooting a particular bullet in the air, is unlikely to be killed by the particular bullet though. Unless that person manages to to shoot a bullet straight up into the air - then stay in the exact place waiting for the bullet to come down - it's very unlikely t... |
How the Imperial system works. | The Metric system I believe is based around water. 0 C is when water freezes and 100 C is when water boils. The US Customary unit system is similar but not based on water. 32 F is when water freezes and 212 F is when water boils. To convert between C and F, you multiply by 1.8 and add 32. So 100C = 100 * 9/5 = 180 +32 ... |
In the USA, how are DUI checkpoints not considered a violation of the 4th amendment of the constitution regarding 'Unlawful search and seizure'? | Uh, can't see it mentioned here, but the real reason is that the Supreme Court holds that electing to use a public road is implied consent.They are actually illegal here in Texas.\rThey cannot use any dwi checkpoints.\r\rBut 5 miles over in Oklahoma they love themYou first have to understand this ::: There is no such t... |
How come VCs & Angel investors don't just hire people to copy an idea rather than invest in it? | Usually, it's the entrepeneur's smarts, grit, etc. that is the ultimate determining factor whether something works or not. And the amoutn of time, size of team, etc. asking for funding would already have a head start. Plus, VCs, etc. are required to sign non-disclosure agreements and other legal documents that would op... |
Before the advances in dental surgery, how did people deal with wisdom teeth? | 1) Booze up the patient. 2) Apply pliars. 3) Pray an infection doesn't set in. There is also the option that you didn't keep all of your teeth anyways, so the wisdom teeth simply serve as replacements. |
What happens when you blank-out whilst driving and realise 5 minutes later you haven't paid attention, but also haven't crashed? | Most professional athletes/whatever do this regularly as well. They did some tests on professional soccer players and found that their level of brain activity was much lower than that of low/mid level ones because they had so much of what they do in muscle memory. Pretty sure if you did it with professional gamers, you... |
Why does the US government recognize Middle Eastern people as White on government documents/applications? | In most cases there are assumed to be three races: Caucasoid, Mongoloid, and Negroid. Most people think of these as European, Asian, and African, but that's too narrow. Negroid includes Australian, Mongoloid includes North and South American, and Caucasoid includes Arab. Strictly speaking a Caucasian is someone from th... |
If sand is used to make glass, how come its completely clear? | Super heating the sand changes the state of matter and when it cools it settles as a transparent solid. It's a bit more complicated than that but that's the basic principle. |
If heat is a result of atoms moving, why does air from a fan, which is moving faster than the air around it, feel colder than normal air? | Because it facilitates the faster cooling of your body. Because of the radiation of heat, there's usually a small bubble of slightly warmer air around your body. The fan blows that away, replacing it with air of the somewhat cooler ambient temperature, which wicks heat from your body faster, and is then replaced by new... |
Would using shampoo all over my body - not just my hair - get me just as clean as using soap? | Generally speaking, yes. They all contain surfactants . I don't even bother buying body wash anymore, just big bottles of shampoo.Technically, the shampoo is a soap , which works the same as a soap, although most shampoos are milder than soaps. So, yes the shampoo will get you as just clean as the soap would do. |
Why does my TV still put out sound when I hit mute? | What happens is in the tv there's a digitial potentiomometer, or a pot, a pot is basically a variable resistor, depending on your set volume level, it will resist more or less, and thereby reduce the voltage so much that you don't hear any sound, but, electricity is still flowing, and that charge still causes movement ... |
Did planes like the Curtiss P40 come from the factory with that 'sharkmouth' graphic? Why are they so uniform? | As already pointed out, they were done by the ground crews after the planes had been given to a squadron. Also of note is that many different planes were decorated with that style of graphic, by all sides of the war. It was very popular. The reason it's associated with the P-40 is via the Flying Tigers using it. |
What is the Trans-pacific Partnership TPP? | I know this doesn't answer the question, but i just wanted to thank you fo doing research on a concept people want you to vote on, instead of just blindly following their suggestion |
Why do you have to be 21 years old to drink in the United States while you only have to be 18 to smoke a cigarette? | on general maturity level is heightened with age and alcohol has an effect on your inhibitions whereas a standard cigarette doesn't. |
Why does water expire? | Laws in countries ask that every single food and drink item have an expiration date. It's a formality that needs to be followed. Water doesn't really expire. Some guys wrote about bottles too, and yea that's a factor too, but not a major one unless you're talking about storing a sealed bottle for years. |
What is The Great Attractor in space. | We don't know because our own galaxy obscures our view in the direction of the great attractor. Maybe we'll know in 100 million years when the sun is on the other side of the galaxy lol. |
Why are some people more prone to being bitten by insects than others? | The real karma is seeing them after they bite someone with high blood sugar levels. My husband is type 1 diabetic. If a mosquito bites him when his sugar levels are high she can't fly straight anymore and will even start ramming walls over and over. |
How do targeted ads know exactly what I've bought? | either your purchasing information was sold to the ad networks by the store or your bank, which i doubt because that sounds like something there'd be huge public outrage over or it's confirmation bias. when you buy a new car, you suddenly notice everyone driving the same car. when you learn a new word, it feels like it... |
"In Case Of Emergency, Break Glass". Wouldn't the glass go into your hand and wouldn't it cut you? | These days they often use weakened plastic instead, for just that reason. Usually if it's real glass they provide a little hammer or other tool to help you safely break it.Depending on the emergency, it might be worth taking some glass to your hand in the event there is no other option. |
why the economy is not "zero-sum" | Well, let's say your parents give you $1 a week as allowance. You can keep that dollar or spend it. Being a 5yr old, you're temped by the ice cream van that drives pass your house every evening. You'll rather enjoy that $1 ice cream than keeping that dollar. In other words, the ice cream is worth more *to you* than tha... |
Why can a Chinese company ship me an eBay purchase for $1.06 including the product, when it costs me a minimum of $1.97 to ship something across town in the U.S.??? | man! Ya'll should try Japan. I have been here 7 years. The shipping here is insaino bad ass. My parents spend about 20 USD sending a 5oz package and it often takes around 3 weeks to get to Japan. For the same it costs me about 500-700 yen and takes about 10 days at most. Amazon in Japan fucking KICKS ASS. I can order A... |
Is it possible to get a mental illness from pure boredom? | Lots of studies with captive animals in zoo settings seems to point to this being the case. Animals develop non-productive mannerisms called stereotypic behaviors that you do not see them doing in the wild. Things like feces smearing and repetitive movements. I know you were talking about humans but anecdotally I think... |
Stocks, Bonds, Investing - New career and I want to Invest | I would honestly recommend going to r/personalfinance and asking there. You'll get better advice on how best to get your money to work for you. |
How are datacaps not in violation of antitrust laws? | It isn't anti-trust because: a) You can get your data from multiple sources. b) You can stream video from multiple sources. |
Who decides how much the president gets paid? | The annual pay commission determines the salary structure of all union government employees, including cabinet ministers, the prime minister and the president. The parliament then approves said recommendation in a general meeting. You can read more about it here: _URL_0_ |
if working out is just damaging and repairing muscle tissue, couldnt we just mechanically damage the tissue and recouperate saving time and energy? | You can actually build muscle with electro stimulation. By putting electrodes on your skin in the right place the muscles will contract with each pulse of electricity. It's not a pleasant feeling. My roommate had a stimulator for his back muscles when he was injured and to fuck with me he just threw the contacts on me.... |
Why does it alway feel like it gets colder just before the sun comes up? | Just before sunrise is the time when it's been dark for the longest, and the lack of sunlight has allowed the most time for everything to cool off.What I assume is that right before the sun rises is the moment where the spot where you are has been without direct sunlight for the longest time. However if you’re really f... |
Explain to me, like I'm five, why some economists believe the current of Chinese economic growth is dangerous and unsustainable | The economic growth of China is made mainly through State. Right now, almost 50% of all the money china makes in one year is for investments that the government makes to keep economy growing , that no one uses. They keep on spending more and more because cheap exports, traditionally the strength of china, are decreasin... |
Why can't humans time travel? | It's not just that humans can't time travel, *nothing* can time travel, if it has mass. That is, backwards in time, we're all traveling forwards in time, just at different rates. It's actually a conundrum in quantum mechanics - there is no mathematical or provable reason for time to travel in only one direction. And ye... |
Why don't some people think that fish, insects, etc. are animals? What exactly do they think they are? | Honestly, it's because she's kind of clueless about biology. Insects and fish are both members of the kingdom *Animalia*. What I think she's really saying is that she wouldn't hesitate in killing a fish or an insect, but she's probably really, really into all those cute kittens and puppies. |
Why do certain states (Iowa, New Hampshire, etc.) exert an outsized influence on the U.S. Presidential Primary process? | Because they vote first, and have for decades. Trust me, as someone who was in NH 8 years back, it's no fun to live there. Instead of 2-4 candidates ads on TV, you have 30. |
How and why do I get flashbacks of dreams that I had weeks, months, even years ago that I would have forgotten after waking up? | Does anyone else have dreams where you repeatedly recognize someone specifically in your dreams, but you have no idea who it was when you wake up? Almost like there is a sense of familiarity in the dream that doesn't exist with that person in the real world? |
How do animals think without a language and words? | It's long but awesome: _URL_0_ For those unfamiliar, Radiolab is a great program from NPR. In this segment they discuss words and language. The part about thinking without words is really interesting. Some researchers think that without words, you don't really think, at least not in the way we understand thoughts. This... |
Why people who have a serious psychiatric issue like looking and downloading child porn (not rape or pictures of rape) are sent to jail instead of treated? | Downloading child porn perpetuates the abuse the children suffer, rape or not, it's just a matter of severity. It is not a minor offense. Now pedophiles might be just fine and happy in their lives, their kind of sickness is not the same as the kind of sickness someone with schizophrenia has. Some issues can be resolved... |
Why did settlers choose to found their city in a specific place? | Well, one thing to understand is that in all three cases, other settlers did, in fact, choose cities in other locations. Don't think that Rome was built in that place because it was the best place for a city in all of Italy. The ur-Romans- Romulus and Remus, if you go by the legends- didn't have all of Italy to choose ... |
How do people travel without any money? | There are websites like wwoof, workaway or helpex where you work a couple hours for room and board. There is couchsurfing which is a community that lets each other sleep on their couches and do some cultural exchange. You can also travel for pretty cheap using hostels and slow transportation. Most of the backpackers yo... |
Why when watching a t.v monitor through another screen we sometimes see static lines running down the first screen. | The refresh rate of the monitor isn't the same as the refresh rate of the screen you're watching, so they're out of sync. Basically one will be refreshing 60x per second, and the other will be not-60, so it will look like they're either flashing, or you'll see a moving band of lines. |
When criminals 'launder' money, I'm assuming their not putting it into a washing machine. What exactly does it entail? | Say you sell drugs . You need a way to get that money so you can spend it without looking suspect. If you drive a bently but claim $20,000 income for the year,red flags will go up. So anyways, you open a business that is cash dependent for the most part. Think pizza shop, nail salon, bowling ally, etc. you open it up, ... |
Why do most drinks generally taste better when they're cold? | it really depends on drink. cheep/bad quality beers must be colder to mask taste. good quality beer doesn't have to be cold, but have serving temperature . for example: Oatmeal Stout should be served 12-13°C, Bière de Garde should be served 7-9°C. |
Will searching certain things on the internet really get you placed on a government watchlist? | There is no simple answer because the government does things in secret. But the fact is that Google does cooperate with the government so you can never really know. Not being in the U.S. might save you from the NSA, but whatever agencies your own country has could possibly be doing the same thing. At any rate, most peo... |
Why only humans need to cook food to eat it? | The answer is humans don't need to cook food to eat it. We can survive on raw meat, vegetables, and fish etc just like other animals. However cooking has major benefits, the most obvious and probably important being that cooking food will kill bacteria and parasites and so reduce the risk of ill health from certain foo... |
Can the legislature effectively dissolve the judiciary by refusing to confirm justices? | Yes, if Congress wanted to, it could abolish all federal courts except for the Supreme Court, and all Justices except the Chief Justice. The Constitution only requires that there be a Supreme Court and that there be a Chief Justice. It also gives Congress the power to set up federal courts and choose the number of judg... |
Why is it that I can be sitting in a certain spot for a while and lose my phones data connection, but upon restarting it I magically have 4g? | A very good answer from Teekno. I'll add that besides being on a transitional point between two cell towers, even the slightest movement of the phone can affect the signal strength that the towers see and thus affect which cell is locked on to. |
Why is that people with good singing voices (Ariana Grande, Bruno Mars, Christina Aguilera) can imitate other voices or singers so easily? | IMO, most musicians grew up impersonating other singers as they grew up. Just like most garage bands start off doing cover songs. Also, confirmation bias. You are not paying attention to less famous singers who do great covers. Side note: most singer/songwriters I know are terrible at karaoke. Those who write their own... |
Conservative and non-conservative forces in dynamics. | A force is defined to be conservative if its curl vanishes. If the curl of the force is zero, it can be written as the gradient of a potential energy function. That's just a mathematical identity. If you're given some vector field representing the force, just take its curl. If the curl is zero, it's a conservative forc... |
Why can only Apple products have IOS but any company can use Android for their products? | Imagine you're a company that makes an OS. It's a pretty decent one, and open sourced enough that it can be changed quite a bit. But there's this massive, rich, and entrenched company that you have to compete with somehow. They have a very good OS as well, and they are the only ones use it. So, both in order to cover s... |
How do not-as-popular bands make money if all their music is getting downloaded for free? | They travel around and play as many small-to-medium sized gigs as they can until they finally make it big. Additionally, if you can generate a lot of traffic posting content on a site like YouTube, they will eventually offer you a partnership and pay you to generate more content. That can become a decent revenue stream... |
Why does a phone camera flash twice before actually taking the picture? | The reply by lonex420 is correct, but there is an additional reason you'll see a double flash on many cameras; red eye reduction. The first flash will attempt to constrict the pupil , so less light from the second flash will bounce off the back of your eye, which can cause the red eye effect you see so often in photos.... |
why is it easier for GPUs to render flat textures for trees than polygons? | The flat tree is still a polygon, but it's just two triangles instead of possibly several thousand polygons. It's basically the same as someone asking you to draw two triangles versus a thousand triangles. One of them will take you much longer than the other.The drawing speed of a polygon is pretty constant, regardless... |
Counting cards in black jack. | Card counting means assigning a sort of point value to every card to track the likelihood of the next card being in your favor, so you know when you're supposed to bet big. 10, J, Q, K and A cards are generally considered to be beneficial to the player, while cards 2 to 6 are considered to be beneficial to the dealer .... |
What is the purpose of water towers? Why do we need to store water so high up? | By pumping the water up into the towers, it will naturally flow down into our faucets without any more work. We *could* use a pump to push the water along the pipes that come to our houses, but that would mean that we'd lose water whenever we lost electricity. The current system is just a lot easier. |
If dogs can hear 40-60,000hz, does that mean sounds in our 20-20,000hz range sound really low to them? | Is a dogs hearing more sensitive to volume than mine? I travel with my dog on the back seat and I like to listen to music while I drive. I listen at a lower volume with the dog in the car because I don't want it to be too loud for her. Need I be concerned?", 'I have a shit voice but suddenly I feel like Isaac Hayes eve... |
Why do we have bounty hunters? Isn't that the job of the police? If it is for bail skippers, why do they have powers others don't? | There are not enough police to do that work. Police you see out on the street are patrolling, waiting for a call, or waiting to see something happen. With people who have skipped bail, you'd need a detective, and there aren't as many of those. Not to mention people who skip bail are probably not in that city anymore. S... |
- Why do computer memory systems use 1024 not 1000? | 1024 is a nice round number in binary. It's 10000000000. So for many purposes it's easier to take 1024 bytes as a unit than 1000. There are different definitions of units like KB, MB, GB and so on. Hard disk manufacturers in particular take 1GB to be exactly 1000MB instead of 1024. Supposedly 1024MB is actually one Gi*... |
What's the purpose of underwear? | To protect your clothing from sweat and stray poop and pee, to protect your privates from chafing; and to make your clothing drape better. You know how lined clothing always looks nicer than unlined? That's sort of what underwear does. |
How does the presence of mass "warp" space time towards itself? | Long story short, in the process of making special relativity and gravity consistent , Einstein found an equation called the Einstein Field Equation. It describes how the metric for space-time depends on distributions of energy. A metric is simply how one measures distance. In flat space the metric is ds^2 = dx^2 + dy^... |
Why do different areas such as US and UK use different power outlets? | The current and voltage differs place to place, so they make the outlet different so you can't use an appliance designed for one standard in an incorrect outlet. You could either fry the appliance, or not have enough juice to make it work. ELI5: it's like putting an aircraft carrier in a small river, or putting a small... |
What really happens to make us feel 'refreshed' after a shower? | I think it has a lot to do with washing all the dirt and oils out of your pores. Getting all that out of there allows your skin to 'breathe' and feels good to touch the air unimpeded. |
Is the Nitrous used for vehicles the same as used for laughing gas? | It's the exact same molecule. The difference with gases is in the purity grade. Medical grade nitrous oxide has been purified and tested so that it doesn't contain anything toxic. Car grade nitrous oxide contains sulfur dioxide so it's toxic. |
How/why can antidepressants increase thoughts of suicide? | Pharmaceutical companies are required to list *every* side effect observed during clinical trials. For example, if you're testing a drug and your test base is 100,000, but only one person decides to off themselves or reports having thoughts of offing themselves, that has to be listed as a potential side effect. |
Why is the moon covered in craters while the Earth seems to have only a few? | The Earth has a number of erosive properties, crust movement, the water cycle, even vegetative growth, which can erase or minimize the appearance of craters. The moon has comparatively little means of doing so. Furthermore, the Earth's atmosphere can soften impacts or even destroy smaller bodies prior to impact. |
How incredibly simple paintings can be sold for tens or hundreds of millions of dollars. | Sometimes pretentiousness, sometimes the history and artist of the piece. I'll give you an example of the latter, the Mona Lisa, painted by Leonardo da Vinci, famous for his genius inventions and for being a renaissance man, although, the Mona Lisa, a nice painting that it is, is a bit lacklustre to me and many others ... |
Why do different types of alcohol make certain people feel or act differently? | I have often wondered about that. Stoly 80 proof will get me ripped quicker than Smirnoff 80. Gin martinis will knock me over but a Gin Ricky will not and trust me I am no lightweight when it comes to alcohol. You might say I was professional drinker for a long time. Doesn't make sense. |
Why does America spend billions if not trillions on wars and rebuilding other countries when America has bridges falling apart, educational deficiencies, and a space program that is underfunded? | Most US military funding goes into manufacturing, rather than towards the actual soldiers . This manufacturing is used as a re-distributive income system to move money from rich states to poor states. Almost all medium-to-large countries have a transfer system like this in place, but America's is built around the arms ... |
how come it take battery's so long to charge when electricity moves so fast ? | Batteries contain chemicals which react when you supply them with power, and then react in reverse when they are discharged. Most of these chemical reactions are exothermic - they release energy when charging. Recharge too fast, and it'll get very warm. Since hot things expand, it'll likely break and leak battery acid ... |
How is U.S. money printed in a way that can't be duplicated to where it is undetectable as fake? | It's not the printing as much as the paper. The paper used in US currency is actually more like cloth. Add to that the watermark and it becomes very difficult to duplicate.US currency has lots of features, but is far behind other currencies on antiforging techniques. Euro notes, UK plastic notes, etc are far far more s... |
Why does space rocket starting sequence takes so long? | Wouldn't you take your time lighting a fire under multimillion dollar machine. There are lots of checks and slight tweaks to be performed before you can watch the exciting part. |
Why are children's clothes marketed by age rather than body measurements | It's not necessarily. I just bought my daughter nightgowns - they are size 110. I assume it's her height. I know it's the right size because her mother told me so 😀 |
What is a "Right to Work Law" and why are they a good/bad/neutral thing? | Right to work laws prevent unions. Or at least, they prevent unions from keeping people who don't join the union and pay dues from working, which means nobody has any incentive to join the union and it falls apart. Whether they're good or bad depends on if you think unions are good or bad. Unions make it so the people ... |
How can North Korea compete in the Olympics? | Followup question: since they are worse than South Africa, which got kicked out, why aren't they banned for diplomatic reasons? |
Is it pitch black in space or is there enough ambient light to see something held in front of you? | In space, there's nothing. The only source of ambient light comes from stars. That means if you are inside the solar system and there isn't a planet in the way, you're gonna see very well. Things will be very bright on the side facing the sun, but shadowed on the other side. If the sun is blocked, you will still receiv... |
Why does water turn to snow instead of ice? | Because the snow forms in the cloud, when the water molecules are highly separated and haven't clumped together enough to form drops. If they have, then you get hail which is essentially balls of ice. |
Why is the law to own a pistol 21, while to own a long gun is 18? | First off, the federal law is that you have to be 18 to own a handgun or handgun ammo . In America, ~65% of gun homicides are committed with handguns, ~30% with shotguns and ~5% with rifles, meaning that handguns are by far the most likely type of weapon to be used in a crime. Shotguns are up there too, but they are ve... |
how are some people able to lose their foreign accents but others still have them after 30 years in the US? | I was raised in an English household here in Australia, basically sounded like a kid you'd meet in Liverpool until I was about 14-15. Now the situations reversed and I have a relatively thick Australian accent with occasional lapses. Its possible to resist an accent changing, so I think it had more to do with how someo... |
Explain to me how the Star Wars Franchise is only worth four billion dollars. | It's just like swapping Halloween candy with your friends. Three Jolly Ranchers are worth four Banana Tootsie Rolls because you both agree to it. Your sister might tell you you're an idiot, and you could have got *way* more Jolly Ranchers, but that's just her dumb opinion so who cares?", 'George Lucas is getting old an... |
Why don't I see non-profit grocery stores? | I don't know all the legal ins & outs, but I believe when you apply to be a non-profit, you also have to demonstrate that you wouldn't be unfairly competing against for-profit businesses. That is one reason why, for example, there are no non-profit bars . The closest we get are food banks, which give the food away for ... |
why did some cultures become matriarchal and some become patriarchal? | Pre-industrials societies divide tasks by gender. Men do certain things, women do certain other things - and each gender tends to make the decisions in their particular sphere of influence. For example, even in societies we'd consider 'patriarchal', women tend to be the primary decision-makers with regards to arranged ... |
Why is - 1 X - 1 = 1 ? | Well, first think of having a positive number multiplied by a negative number. You're adding a negative number a positive number of times, which would surely give a negative number. Inversely you could say you're adding a positive number a negative number of times. With this in mind, it's just adding a negative number ... |
Why does Reddit hate Minus? | I'm sure someone will have a more technical answer, but for me its that if a minus gif loads for me, on my mobile, which is the only way I browse reddit, it takes forever. Its to the point where if I click a link and it goes to minus, I usually just escape out. Its too bad. I know I miss out on some great content. If n... |
Why is it so difficult to make an electronic voting machine without all sorts of bugs and other problems? | It isn't that the machines are buggy, it's that electronic voting is very dodgy. You throw some votes in a black box and it spits out a winner. how can you verify nobody altered the counting software? |
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