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. Why all cell phone cameras make the 'shutter sound' and there is no option to turn it off? | In some jurisdictions the shutter sound is a legal requirement to help prevent people from taking compromising pictures of unsuspecting persons without the victims knowing about it.You can turn it off on the iPhone. Mine is, anyway. Are you in Japan? I've heard it is not possible to disable that for phones sold there, ... |
Why are galaxies and stars named with numbers and alphabets? | There is such a huge amount of them that giving them actual phonetic names is totally unfeasible. Only the closest, most well known stars and galaxies have names like Andromeda and Alpha Centauri According to Wikipedia, there are thought to be between 200 billion and 2 trillion galaxies. The even larger number of stars... |
Home loans and who is getting paid | You put a certain amount of money down up front usually in the 10 to 20% range. The bank then pays the rest of the cost, but expects you to pay it back with interest. Until you 've paid it all off, they technically have rights to the house and can foreclose on it if you fail to pay. Over the course of the loan they wil... |
Is the sales tax designed to target the poor? | You are correct that sale tax disproportionately affects those who spend a larger part of their income in a year. However, income tax is also a thing and it disproportionately affects those who earn more in a year . Similarly, property tax costs more for people who have more valuable real estate. So yes, different type... |
why does the sky sometimes turn green when a storm is coming? | It's really cold up high in the sky. If a storm is REALLY strong, the clouds will get so cold that they will freeze, like the ice cubes in your refrigerator. Ice takes the red light out of the sky, and what is left over is yellow light and blue light. Yellow+Blue=Green, and so strong storms will make the sky look green... |
How can Tardigrades survive in +100°C temperatures, but boiling water kills bacteria and other organisms? | Tardigrades have to be hibernating first, which takes away a lot of their water. They also don't live very long in 100C temperatures, as opposed to some bacteria which can actually survive for a long time above 100C. |
what is the relation of Puerto Rico to the United States and will this be likely to change at any point? | Currently it is a territory of the United States. Like [/u/i-eat-mop-hoop] said, they recently had a **non-binding** two-step popular vote. The first question was *"Should Puerto Rico's status remain as it is?"* 54% said no. The second question was *"If Puerto Rico's status were to change, should it: seek US statehood,... |
The whole "Plastic Snowball" thing that's going around. Should snow melt if tightly compressed or is there a scientific reason the snow isn't melting and turning black? | The snowball isn't tuning black, the snowball is collecting soot from products of incomplete combustion. The soot further insulates the snowball from further melting, combined with the high specific heat of water which makes it hard to melt with a tiny heat source", 'Yes, they are trying to kickstart a conspiracy. As o... |
Is there any difference between breathing with your nose than with your mouth in long term? | One other long term effect would be dehydration. When you breath through your mouth it dries out, that is because the air is causing the water to evaporate from inside there. So I think in the long term you would require more water intake to regulate your hydration levels.You'll cough a bit more when pieces of dust to ... |
Why is it that we make hand movements and gestures when we speak? | It's done when you think you have more to tell than your words can express or you want to emphasize what you say. Even speech is mouth-gestures, so there won't be a line to draw between. When having to chose your words carefully e.g. in court or e.g. when a lot is at stake or e.g. in technical dialogues or e.g. simply ... |
How do magicians keep their big magic tricks secret? | > Wouldn't they need a team of engineers to keep quiet about it? Yes, and they have those people sign documents promising not to tell how the trick works under penalty. Beyond that, an engineer who has a habit of disclosing client secrets won't get any work in the future. It is in their best interest to keep quiet. > a... |
How is it that -- even when the weather is consistently clear, sunny, and not windy -- it can still be 70 degrees one day and 90 degrees the next? | Your answer is probably in the Jet stream, assuming you're in the US. It's a large, high level tunnel of air that while generally won't produce any surface level wind on its own, it does block colder or warmer air from passing it. so if the jet stream is in an area "below" you, especially this time of year, you'll get ... |
Why is it whenever I talk to someone with an accent, I talk back to them with their accent? | It's an intuitional thing to mimic others in conversation, usually with gestures, but also speech and in your case an accent. That shows that you harmonize well. If this happens a lot to you, you are probably are very social person. |
Why do amphetamines (such as Adderall) cause me to lose my appetite? | Amphetamines and other stimulants work by activating the sympathetic nervous system, commonly known as your fight or flight response. When the body gets the signal from this nervous system it gets ready to survive causing dilation of pupils, heightened alertness, increased heart rate, etc. It also shunts blood away fro... |
For a non-American, why does the President pardon a turkey? | It's seriously just a stupid tradition. There's literally no other reason behind it, and it has no political or legal effects at all. It's not even a binding pardon, as the turkey is an animal.It really all comes back to a few presidents that looked their dinner in the eye and felt bad for the bird. Over 150 years or s... |
What does a Neutron Activation Specialist do exactly? | Neutron activation analysis is a technique used to determine the distribution of elements in a sample, similar in a lot of ways to mass spectroscopy. You take a sample and bombard it with neutrons, which transforms its atoms into radioactive isotopes. Each one of those isotopes decays with a unique signature, which tel... |
why is the US fighting India on building solar panels? | From what I have read in the news, it is because of "unfair" sanctions on American made solar panels enforced by India. I read it here. _URL_0_ |
How come diesel engine have been praised in the past and now suddenly everyone seems to be against it? | Different type of fuel and compression result in different products - diesels run in high compression and hot so they burn their fuel thoroughly, however it also causes atmospheric nitrogen to react with atmospheric oxygen, producing toxic nitrogen oxides. The recent diesel scandal was companies cheating with the engin... |
What exactly is a synthesizer and how does it make the sounds? | There are many different types of synthesizer. The classical analog synth, like the Moog, starts the signal by generating one or more simple waves, like a sine, square or triangle wave, and then applies various modifications to it, most importantly a filter and an envelope . Of course there are many more ways to modify... |
How are interviewers are allowed or trusted to interview criminals ? | The criminals may or may not get a legal agreement signed by the interviewers. However, ultimately they have to trust the interviewers not to reveal secrets -- which would ruin the interviewers' reputation but might be much more harmful to the person with the secret identity.Well, there is an element of trust but inter... |
The plot to Upstream Color | **SPOILERS** *SPOILERS*SPOILERS^Spoilers^Spoilers Plotwise: A woman is hypnotized by some psychedelic substance derived from a worm, delivered by a man who steals her identity to take away all of her investments and savings. With no memory of what happened, she meets a man on the train whose rather rough and demanding ... |
Why are inmates kept on Death Row for so long? | legal appeals. Many legal groups operating for free appeal their sentences, make re-sentencing happen, make retrials happen, and sometimes exonerate. Legal tactis can delay it for years. And really, there is no possible way to deny things like appeals, or say it goes on too long and put a hard limit. Because the fact i... |
Why Does Catalonia Want to Secede from Spain? | Historically, Catalonia has a different culture and language than Spain which led to a lot of nationalism. Now there's also an economic factor because Spain isn't doing well and to Catalonians it seems like they are "propping up" the country.Catalonia is the wealthiest region of Spain and provides way more to the gover... |
Does the moons orbit around earth, earth around the sun and the sun around the milky way galaxy use the same orbital mechanic? | Yup! It's all about motion and gravity just on different scales. Also fun to think about, in all of these cases the "point" the orbit is centered around is not the center of the object we think of as being the center, but someone between the center of the two objects, as even the smaller object pulls in the larger one,... |
Is the golden ratio the same as the fibonacci sequence? | No, because a ratio and a sequence are two different things. The two are connected because if you take a term of the Fibonacci sequence and divide it by the previous term, the result will be approximately the golden ratio. It gets closer and closer as you get further in the sequence. This isn't unique to the Fibonacci ... |
Whats this Liam Fox story I keep seeing in British newspapers? | MP allows friend who has no reason to be involved in his job along to government meetings and into offices where data/information could be compromised. In a nutshell. |
Why is it considered lame or not "tough" to flinch when something surprises you? Doesn't it just mean that you react quickly or have faster reflexes than those who don't flinch? | It is typically considered "cowardly" because it supposedly means that you are either afraid of the opponent or that they have put you on edge, or not being ready for any pain. Like many, this connotation is completely illogical.Kids are dumb, and want reasons to make fun of other kids. There's not really much more to ... |
How do we manufacture wood planks that are wider than a tree would allow? | Plywood is made by rotating log and peeling a sheet of it at the same time with a blade. Kind of like when you sharpen pencil with pencil sharpener. These sheets then are glued together. I learned this from waching how it's made, look it up on youtube.There you go: _URL_1_ Edit: This is kinda better _URL_0_ |
Why is it better for Braille to be lines and dots instead of just being the actual letters of the word. | Braille is just dots, no lines. [To answer your question]: > Raised letters would have to be much larger than a fingertip. In addition, embossed dots are easier to recognize than the lines and curves of roman charactersWell, some letters can be misinterpreted. Like if "Nl" were put together in a word, it could easily b... |
How do athletes make money from sports games like FIFA or Madden? | > Do they even make money at all since their face and name are used in the game? That's the answer to your question. In order to legally use someone's likeness you need their permission. Which they may or may not grant unless you pay them.Players are represented by the NFLPA, MLBPA, NHLPA, etc. 99.9% of players belong ... |
Why do I have to turn off the transmitting functions on my electronic devices when I fly, despite that not doing so will cause no harm? | It falls under the category of "It's overwhelmingly unlikely that anything would happen, but better safe than dead."', "When you're in a airplane, you're cruising along at over 500mph. This means you're constantly moving into & out of range of cell phone towers. If you leave your phone on, it may try to connect & disco... |
Why do headphones get tangled in your pocket even if you don't touch it too much? | Cords get tangled because there is only one possible configuration of a cord that will not result in it tangling: being absolutely, perfectly straight. Any other configuration and it will tangle. a tiny bend ro wrinkle will get bigger with every minor motion. Not quickly, but it happens. This makes more similar imperfe... |
Why do my nipples get hard when I am relieving a full bladder? [serious] | Taking and educated guess here, correct me if im wrong. When you relieve your bladder your body releases endorphins, oxytocins and bunch of other molecules. Endorphins and oxytocins are types of hormones which play a role in giving you that ''feel good'' sensation and in intimacy . Now, how is that related to the chang... |
Can someone tell me what exactly the Teen who solved Newton's 300 year-old-riddle actually did? | To explain in the simplest possible terms, what he did is find a formula which gives the solution to a problem which previously was only solvable numerically. So, an analogy would be this: say for some reason people frequently needed to calculate 1+2+3+ +n where n is some arbitrary integer. It's like for 200 years peop... |
- the architecture of fortresses | A star fort has the advantage of having no space along the outside of the walls where an attacker is safe from enemy fire. There is no point where some part of the walls won't be after to fire on attackers. This design was developed in the age of cannon and musket, and was useful through the nineteenth century, when ad... |
The media keeps stating the GOP is vanishing but both the Senate and House are controlled by republicans and 31 states have republican governors. How exactly are they disappearing? | Can you give a quote? I don't think anyone denies the GOP has a lot of political power in 2015. What I think they mean is that the Republican Party is made up of its members, Republicans, and Republicans are disproportionately old white religious men. Obviously men are going to be with us for a long time, but old peopl... |
Why can we have heaters but not coolers? | To put it very simply, it's because heat is a thing whereas cold is a lack of a thing. You can generate heat through various processes of converting one energy type into heat energy. You can't generate cold because cold is just a lack of heat. So the only way to make something cold is by removing the heat. |
Why can't college football players get involved with agents/agencies in the USA? | Because then the college's and NCAA would have to give up some of the hundreds of millions they make off the players. And once you have control it is so hard to give it up but times are changing. I doubt this system will stand up much longer now that more people are becoming aware of it. It was a good idea at the start... |
Why do men only go bald on their heads and nowhere else? Their beards, for example. | Testosterone gets converted to a chemical called DHT . DHT is what causes hair loss, specifically in people who suffer from male pattern baldness. DHT is an Androgen , so it's responsible for facial hair amongst other things. While it's present in women, it doesn't have a role to play. It has higher levels in men, and ... |
-How do we hear differences in sound besides volume and pitch? | In a word, overtones. Overtones are higher frequencies that vibrate in sympathy with the fundamental frequency. These overtones are what give instruments their own sound, or timbre, and each instrument has their own overtones created by the construction of the instrument, the way it's played, and a whole bunch of other... |
How would I die if I fell from outer space to Earth, naked? | Oxygen deprivation. After that you would freeze and then burn up.These people say: First off, the gas in your lungs and digestive tract would rapidly expand, inducing swelling. If you choose this inopportune chance to hold your breath, your lungs would likely burst and you'd be a goner. Any water directly exposed to th... |
How is "productivity" at all time high? Doesn't the US produce less now with manufacturing gone? | Productivity does not mean "how much is produced" It means "how much is produced per hour of work by each worker" So let's say we make widgets. 10 Years ago we made 100 widgets an hour with 10 employees. Today we make 1000 widgets, but only have 5 employees. We 've increased our productivity by 2000% ! Sure employment ... |
Why do we need to take the SAT at 0800? | That depends on what time zone your in but my understanding is the same test is given at the same time across the country to avoid people sharing answers and its done so early because those administrators have you know regular way jobs. So 8 it is so they can be home by 5. I mean honestly if you think 8am is early, you... |
When I am taking a bath (or in a body of water), why do hundreds of tiny bubbles collect under my arms, legs and bottom? | In simple terms water is filled with various gases. Nitrogen, oxygen, etc. You and the things on you - are enough to agitate those gases into forming bubbles . The amount can depend on the temperature of the water and local pressure. It's also why bubbles form in water left in a glass. Same principle. Also the composit... |
Why Japan Anime Shows Have Characters That Are White | To a Japanese person, anime characters look Japanese. This sort of question gets asked fairly often, the reason that white people often perceive anime characters to be white is that anime characters usually don't have any obvious racial traits, and so most people assume they are whatever they consider to be the "defaul... |
Why does our body try to cool itself down when we have fever, even though the body heated itself up on purpose | Your body has a internal thermostat, called the hypothalamus. This thermostat can be adjusted. Sweating occurs when your body temperature is above thermostat level to cool your body down. When you have a fever your thermostat is set higher than normal. This is why you can feel cold even though you have a fever, because... |
Why do so many thing cost (x).99,- instead of being rounded to a "normal" number? | Because it makes it appear cheaper. Many people lop off the cents portion of the price when thinking about it, ie, that piece of cake costs $4.99 but it's read as costing four dollars. |
Underneath the surface layer of sand at the bottom of the ocean, is there more sand (or something) that is dry? | Under the ocean floor sediments are some of the youngest rocks on earth. The rock is generated at the divergent plate boundaries , from melted parts of the mantle. The rocks lie in a sequence, with different chemical composition and texture, but are probably what most people would compare with basalt, from volcanoes wi... |
How does an entire index like the DJIA drop 5% or 1,000+ points in a day? | > I find it hard to believe that coincidentally all stock brokers/share holders collectively go hmm today is a good day to sell off my investments. How does this work? You'd be absolutely right here. Stock brokers and share holders generally wouldn't do this activity. But guess what? They don't trade stocks! Computer p... |
Why does everything temporarily look gray after I lay out in the sun? | Probably best to close your eyes when facing the sun for long periods of time, but this happens because the cones that see colour get tired faster than the rods that just see light. |
can someone explain why there's so much energy from splitting an atom? | Splitting *one* atom releases a very, very tiny amount of energy on the human scale; far too small to detect without very sensitive equipment. People talk about splitting 'the atom' as though you only break a single atom and an entire city goes up in a giant atomic fireball. This is absolutely not the case. It takes 56... |
Why do people want power and control? | Evolution favors it. People with lots of power are more likely to command resources that benefit their offspring, increasing their survival rate. |
what's the purpose of an exhaust fan in a bathroom without a shower or tub (e.g. powder room)? | Have you never heard it called a "fart fan"? Even in a powder room , having a fan on with the door mostly closed will at a minimum keep the bad air from spreading. Is it perfect? No. Is it better than nothing? **Absolutely!!**Fan-caused air movement, even if slow: 1) prevents buildup of musty smells caused by mold, mil... |
Wouldn't it be cleaner to build bathrooms with push-to-exit doors? Does any thought go into the decision to hinge the door this or that way? | In many areas if a room has only one exit the door must open inward as a fire precaution. If the door only opened outward and something fell in front of the door those inside would be trapped. Fire safety is the bigger concernAs Killergwhale says doors open into rooms in part because doors can not open into hallways wh... |
How large can you build something before you have to start accounting for the tendency of said structure to collapse into itself on account of its own gravity? | Larger and more dense than anything we have ever created, and possibly would ever create so long as we inhabit only this earth. Gravity is a weak force and generating enough for it to be a structural concern is a materials science problem more than engineering. You'd have to build something on the scale of the Moon, an... |
why is universal caller ID not common for cellphones after becoming common for landlines in the 90s? | Most phones can and do provide caller-id support. The issue is that the individual phone companies are responsible for what information is transmitted. Some companies can block sending caller-ID information, some companies put the owner's name, some allow for the owner to specify what they want. |
In problem solving, what is an Ill-defined problem? | An ill-defined problem is a problem where the premise of the problem is poorly or erroneously defined, therefore putting in jeopardy the solving of said problem. This tends to happen a lot in politics, in the sense that a politician will announce measures to solve a problem by addressing it in the wrong way because the... |
What are the differences between DNA transformation and DNA recombination? | > they both produce a plasmid that contains genes from other plasmids. I thought transformation referred to free-floating scraps of DNA being incorporated into either a plasmid or a bacterial genome. These may or may not have come from a plasmid, or even another prokaryote. [Source]. However, upon searching Google, it ... |
How do stocks work? Is there a pool of stocks that people can buy from, or are you always buying it off someone else? | I'm assuming you're talking about publicly traded stocks . > Is there a pool of stocks that people can buy from, or are you always buying it off someone else? Usually the latter; you're buying shares from individual shareholders on the open market. Sometimes, though, companies will offer their own shares on the market.... |
Why doesn't all cars come with a speed limiter? | Cars do. It's called the driver. Most all of them are defective in some way or other however. |
How do game shows come up with all the money they give away every episode? | Advertisements, and possibly sponsors during the show. If you look at wheel of fortune, Pat and Vanna combined make about 20 million a year. So there is a lot of money to go around if you are successfulSame way money for other expenses is gotten, they sell advertisements. Or more precisely if the game show is produced ... |
What is the difference between good and bad sugars? | Sugar is sugar. In a high activity state sugar is good because the energy it provides is easily accessible.The sugar is fruit is fructose, and is actually thought to be worse than other monosaccharides as it causes problems with the pancreas in large amounts over a long period. The difference is that candy is essential... |
Why are radioactive things in media portrayed as glowing and green? Last I checked, you can't see radiation - hence Geiger counters, yes? | Because movies are a visual experience and need a visual effect. Imagine if you went to watch a sci fi movie and they said "Quick! Fire the handwavium cannons!" and you see NOTHING!!! Although this would make sense in real life as I 've never known anything to explode from my wind up torch of death, in films it seems l... |
Why Sia doesn't show her face, despite being photographed multiple times at high profile events and being classically beautiful? | She said that she wants people to focus on her vocals and performance of hue dancers she usually has, and not how she looks. It has backfired for some people, because all they think about is her hiding her face and not focusing on the performanceI'm not sure I agree with your classification of classically beautiful. I'... |
How do they launch space ships from the moon back to earth? | The moon's gravity is much weaker than the earth's, and there's no atmosphere to offer up any resistance, so they didn't need as much thrust to escape the moon's gravity well. Considering that, the lunar lander was designed to launch from the moon using its landing gear as its platform. once it was in orbit, the lunar ... |
How do directors shoot a scene in a movie where the actors are standing in front of a mirror so that the mirror doesn't reflect the camera crew? | There are a few tricks. It depends on the scene. 1) Filming at an angle so the camera can't be seen in the reflection. Really common. 2) Filming so that the actor or whatever is in the mirror obscures the camera . 3) CGI or other optical/set effects to remove or obscure the camera. Black Swan basically CGI'd out the en... |
What was the evolutionary advantage to T-Rex's small hands? | Not everything has an evolutionary advantage. For a trait to exist, it only needs to not be a **disadvantage** to reproduction[They were not that small]. They were three feet long and could probably bench 400 lbs. They are just small compared to such a huge animal. So the question is not what advantage are such small a... |
If lockpicking guides and tools are available widely, why are so few houses lockpicked into? | Its far easier and more efficient to break a window or kick in a doorHouselocks are too hard for most amateurs. Plus lockpicks are considered burglary tools, which means they are illegal to carry on your person without a locksmithing licence. Additionally, some people have morals.Speed is the name of the game. [Lock bu... |
Why do some diseases have grace periods in which a patient seems to recover? | In terms of viruses, sometimes they replicate inside the cell. Under favorable conditions or stressful situations the pathogen will come out of the cell and start causing symptoms. Herpes is one of these viruses. |
Why do those in authoritative positions i.e. politician, CEO, resign after making mistakes i.e. scandal, name call? | Damage control. The 'brand' they work for becomes tainted with the scandal. By stepping down it minimises the exposure to the company/brand of the negative press and prevents fanning the media flames. Sometimes brands become guilty by association and people dropped as well. You'll see this in particular with sporting s... |
WHY is it that sometimes my ballsack is loose and flabby, and other times it's the direct opposite? | Your nuts are a thermostat escentially a thermosac. When they high and tight chances are you're cold. Long and loose you nice and warm. Reason your little homeboys are total drama queens and want to be at a special temp.Sperm is very sensitive to temperature. It needs to be a bit lower than your body, so it loosens up ... |
Why are most VR headsets goggles instead of helmets? | Mainly cost. Adding more material costs more, and most VR companies are trying to make low cost products. Also they're pretty light, so you don't really need more support. As for the audio, most people buying a VR product already have headphones/earbuds, so it's not really needed. |
Why do you oxygenate wine in a decanter for taste, but you can't leave wine corked for too long because of the oxygen? | Oxygen creates oxidized compounds. Slow oxidation, like aging a bottle with a cork, can improve the flavor until the increase in oxidation starts to hurt the wine flavor . Fast oxidation doesn't work entirely the same way and while it can improve the wine, it can go bad much faster too. The rule I've always heard is a ... |
How does fiber keep people "regular"? | My biology teacher explained this one to me. I'll try my best to translate this to English. Your intestine is a muscle. Your body cannot actually digest fibers. So what do your intestines do? They try to push it away as quickly as possible. The result? Your intestines grow stronger as a muscle!This keeps your intestine... |
why is freezing an animal considered the most humane way to kill it? | Because freezing to death is largely painless. From people that were found inches from death due to hypothermia, and had given up and started to succumb, they describe it as "your entire body is numb, you can't even feel pressure, and you feel tired, so you sit down, or lay down, or just collapse, and you lie there, an... |
What is a Memristor and why is it important for the future of computing? | Something about storage *and* process on same piece-o-silicon. If you look at any reading on architecture, you will always see memory in one spot, the CPU in another and the system bus gluing everything together. What this means is a lot of your time is spent moving stuff around, I/O being somewhat expensive. Pull from... |
What is Google's "Deep Dream?" | Some engineers at Google were working with an artificial intelligence system called a neural network. This particular system was trained to identify objects in pictures. That's something that's very useful for a search engine, particularly a search engine that has image search. So they'd give it a bunch of pictures of ... |
Why do I get the illusion that I'm sleepy then can't fall asleep? | I will see if I can find documentation to back this up, but I read recently that changes in your surroundings put your brain on alert and it's harder to fall asleep. For instance, if you're watching TV and start to drift off, then the TV turns itself off with a sleep timer, your brain can interpret this change as a pot... |
Why are humans vastly more intelligent than even animals with vastly larger brains like elephants or whales? | Neuroscientist here, also with some experience in intelligence research. Generally, is believed that brain mass to body mass ratio is a loose indicator of cognitive ability. So, what explains deviations from that tend? One explanation is highly developed but very specific abilities. Humans are particularly specialized ... |
How did early cartographers (map makers) produce such detailed and intricate coastline maps? | They would triangulate, a lot: they use triangles and the rules of triangles to obtain distances using angles from reference points . With appropriate instrument and knowing the distance between two points, they can go to these two points and know the distance of a third point by measuring the angles. Rinse and repeatI... |
What is the speed of the deep space network? | The speed varies drastically depending on the spacecraft. The main factors are: * Distance of the spacecraft,* Power of its transmitter,* How directional is the spacecraft's antenna, and* How big and directional is the DSN antenna in use. For example, the Galileo spacecraft was designed to be able to send at 130,000 bi... |
How do tow truck drivers get around parking brakes and parking "gear"? | The handbrake doesnt lock all the wheels, even on a 4wd car, usually just one set . The "P" position on the automatic gearbox is just akin to Neutral on a manual, isnt it , and doesnt have anything to do with braking?Towing an AWD in Park will damage the drive train, you are correct.Depending on the situation for RWD t... |
Why is it that some types of bottled water "taste" or "feel" different? | Because water from different areas contain varying quantities of various minerals. Its the minerals that can change the tasteOur perception of a bottle of waters flavor depends on minerals, design, and to a degree, the purification process. There have been a couple studies that show some bottle shapes, textures, etc. i... |
Supposedly paper made a few centuries ago had better quality than paper nowadays, is this true, and why? | Wood pulp paper is what we are familiar with today. It is made in a similar way today as it was many years ago. However, today, it is made by machines. Before, it was made by hand. Making extremely thin paper is possible with a machine because you can precisely set up the exact dimensions of paper to create. Because ma... |
Do we experience sound in 2D? | On a very technical level, we only experience sound in one dimension - amplitude; adding the dimension of time, we get a second one, frequency. Everything else is post-processing in the brain. In the same way that we perceive images as three-dimensional via brain processing to account for the stereoscopic effect of hav... |
The Earth's magnetic field periodically reverses polarity. How does this happen and what are the effects felt on Earth? | The effects are relatively unknown. We know a good number of species rely on magnetism to navigate, so there might be a critical moment that could lead to a kill off event where magnetically dependent species just get lost and die. Or they will just notice everything's been flipped. It's hard to test, I've seen experim... |
How are other subreddits like "ellenpaoiskillingreddit" but "blackout2015" not getting banned? | Subreddits have been banned previously, but it's generally been for a reason other than merely disagreeing with the administrators. For example, the recent ban on /r/fatpeoplehate was based on the accusation that members of this subreddit were actively harassing people outside of their subreddit. I can't really think o... |
Why are hypocrites and people with double standards not the same thing? | A hypocrite is someone who pretends to have some sort of virtue but really doesn't. A hypocrite would be, say, a priest who preaches about morality, etc and presents themselves as the epitome of what he is talking about but behind closed doors molests children. People usually use it to refer to people who say one thing... |
How do we take pictures of the Milky Way galaxy? | The pictures you see are either: * drawings* computer generated images* a photograph of some other galaxy we believe looks like ours |
Are electric blankets bad for your health in any way? | No, the electromagnetic field emitted by the current running through the blanket will not harm you in any way. With regards to overheating, you'd be unable to stand the heat before any damage occurs , unless you're an idiot and try to overheat yourself using one, you're going to get uncomfortable and take it off/turn i... |
The difference between AWD, full time 4WD & part time 4WD. | The problem with 4WD is that you have a single engine driving four wheels. However the wheels do not go the same speed around a corner. The inner wheels will have to go slower then the outer wheels and the back wheels will track further in and therefore go slower then the front wheels. Cars therefore use a differential... |
Why do human legs bend forward, while other animals (e.g. Velociraptor) legs bend backward? | I believe that if you look at the back leg of a dog, for example, the "backwards" joint is the equivalent of a human ankle, and they also have a knee. Basically, if you walk on the ball of your feet, and had a size 30 foot, you 'd be doing the same thing._URL_0_ Apparently, all knees end the same way. A bird's as your ... |
Why do cuts get white when you take a shower? | It's a bodily fluid that mostly contains white blood cells and vitamins. It's to help speed the process of tissue/skin repair.Osmosis is happening here. The shower water is hypotonic compared to the fluids in your tissues. Certain cellular solutes therefore leave your tissues and rinse away with the water. This leaves ... |
How do ants decide the physical structure of their colonies? | They don't decide in the sense of a conscious, intentional, planned or designed thing. Instead, each one of many individuals of various castes follows a few very simple procedures that collectively result in an elaborate layout. This kind of thing, where amazing complexity can arise out of the behavior of many simple a... |
Why do scents and fragrances (ie. lotion, sprays) tend to smell better on other people? | many reasons. 1) You get use to the smell and get desensetized to it, so you cant smell it on you, very similar to the reason why some smokers cant tell they smell like a burning turd. 2) Colognes, perfumes and smells generaly are affected by your own body odor, skin PH and Hydration, so the same frangrance can smell d... |
What would happen to our body if we could increase gravity like in DBZ? | At 10G your poop would crack the porcelain of your toilet.Others have explained the issues with this already, but it's time for some fun facts. At 2g your weight and the weight of everything else is doubled, effectively. Everything is twice as difficult. Good for training! At 5g, the average person blacks out, so don't... |
How do paleontologists differentiate dinosaur carnivore species? | Do sheep and horses look the same to you? There are major fundamental differences between many of them, and more subtle ones between species within the same genus. It is simply a case of careful description. |
How do fingerprint detectors work? | The scanner uses a light-sensitive microchip to produce a digital image. The computer analyzes the image, selecting just the fingerprint part of the finger, and then uses pattern-matching software to turn it into a code, then this code is used everytime you want to unlock something. Every finger is given a unique code,... |
what happens when you have brain freeze? | [here] are a number of other occasions where this has been answered. They should have the details you are after. |
Why are deep voices relaxing to most people, as opposed to high pitched ones? | No clue if this is "official" or correct, but many times I associate high pitched voices with either panic, anxiety, or whining. My voice gets higher when I'm upset. |
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