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Why does fruit never have a consistent taste, but yet fruit juice always does? | From what I understand, they have something that's kind of like the equivalent of an OJ sommelier that tastes and alters the OJ to make sure it tastes consistent", 'The orange juice you buy from the store doesn't even taste much like actual orange juice. When it says it is not from concentrate, it does not mean that th... |
how is it possible to sell items that are so cheap there should be no profit? | The key is in quantity. When you ship one banana across the globe and sell it. That one banana has to cover every cost:- the growing- the picking of the banana- the shipping And it also needs to make a profit. But if you ship 100k banana's all those costs gets split by 100k banana's. Especially the transport. That's th... |
How does a currency become "stronger" or "weaker" with respect to other currencies? | Here's a simple example. Suppose a company in Thailand has a breakthrough and invents flying cars. Everyone wants to buy a flying car, but only this company in Thailand knows how to make them. The owners of the company are Thai. They want money they can use to pay their taxes, pay their employees, buy nice houses, put ... |
Why does opening a warm soda seem to increase the chance of a fizz explosion more so than a cold soda? | Warm soda isn't as good at holding in fizz as cold soda is, and combined with the change in pressure from opening the container that makes the fizz explode out. |
For animals who primarily rely on their ears for navigation and survival, how do they protect their hearing to get the most use out of it? | If you aren't a human fucking around with concerts, power tools, and firearms, you aren't going to damage your hearing. Only a handful of animals can make sounds loud enough to cause hearing damage- elephants, howler monkeys, and maybe some whales are all that I can think of. |
How do water faucets work with going back and forth from hot to cold water? | There is a tube connected to the hot and cold water pipes and inside it a tube connected to the handle and the shower. The outer tube has triangle shaped holes, the inner tube has one or two round holes. When you rotate the handle the inner holes line up better with one or the other outer holes, selecting more cold or ... |
Why cant we imagine a new colour? | We don't really know. Tetrachromats exist. They're very rare, but the fact that they exist means that the human brain is capable of processing more colors than just the ones that most of us see. This does raise some interesting questions about how our minds are primed by the input they receive. How much of a role does ... |
What are essential oils, why do people rave about them, why are they looked down upon? | Essential oils are actually very cool when used in normal, sane ways Citrus essential oils are powerful degreasers Peppermint essential oil can alleviate a headache when dabbed on your temples Many bugs have aversions to scents like citronella, cinnamon, or lavender But they don't cure disease and can be harmful to hum... |
Why are most transparent materials isolators and not conductors? | It has to do with something called the plasma frequency of metals. A couple of things you need to know first: * Electrons are free to move inside a metal* Electrons are charged* Light is an electromagnetic wave * Different colours/types of light have a different frequency with which the electric field oscillates. When ... |
Why dont car doors unlock if you pull the handle while it’s unlocking? | Because it's not fully unlocked until it's done unlocking. The mechanism to prevent the door from opening is only fully disengaged at the end of the unlock cycle. |
What noticeable difference (if any) will I notice with 5G on my phone? Is it that much of a difference from LTE? | AT & T's 5Ge is actually LTE-Advanced, a standard that has been around for a while. Sprint actually even sued AT & T for gaining unfair advantage by lying to their customers. It actually happened to me last night in Philly, and I was surprised because I definitely don't have a 5G phone . Ran a speed test, ping is 12 ms... |
Why is it we can sometimes feel or hear our heart beating through various body parts, and what makes it happen as opposed to the majority of time where we can't? | Sometimes, a bodily position which compresses arteries can make the pulse feel much stronger. EG, if my hands are cold when I get into bed, I'll sometimes slip them under my buttocks to warm them up. Within a few seconds my pulse becomes very prominent.Just because I didn't see it anywhere else, I think the word for th... |
How does cooking meat actually work? Where does all the blood go? | The juice that comes out of meat when you cook it isn't blood, that's a misnomer. The meat that you buy at the supermarket has very little blood in it if any at all. Draining the blood from the animal is an important step in the butchering process. The red coloring and juice that comes out of the meat is myoglobin a co... |
Why will some buisnesses not accept $50 and $100 bills? | If large bills are counterfeit, the store has lost a great deal of money. Counterfeit checks aren't always foolproof. It can also be a huge pain to make change for a large bill, especially at the beginning of the day or after the till has been emptied. If you buy an item for $5.16 and pay with a $100, you're taking a l... |
How does applying a raw steak to a black eye or swelling help? | It is cool but not ice cold, somewhat flexible, and something a manly man might have in his fridge while he wouldn't likely have an ice pack. Nothing about it being a steak specifically is important, it might be a bag of peas or any other similar foodstuff.It is assumed that the steak is either frozen or cooled. In tha... |
How do barcodes show whether or not an item has been purchased? | Every product is assigned a Universal Product Code or UPC, a 12 digit number that only corresponds to that one product. At the store checkout the barcode reader looks at the barcode which is a representation of this UPC number. The computer can then identify the product based on the store's database which will give the... |
How do zinc sacrificial plates stop rust? | A sacrificial plate doesn't stop rust. It can't. What a sacrificial plate *can* do is be a brighter, shinier target for corrosion than the other metal. This is because zinc gives up its electrons more readily than other materials, so it'll rust first. Then, you can replace the zinc anode from time to time instead of ha... |
How does testing a nuclear weapon in ones own country is considered safe but attacking other country causes mass destruction and environmental problems? | ELI5: It's the difference between having experts setting off fireworks outside at a carefully chosen distance from people, and setting them off inside your kitchen. Note that even setting them off outside can sometimes be dangerous.Nuclear testing is conducted in a controlled manner, in a location far away from populat... |
Difference between Bisexual and Pansexual | I would say the biggest difference in them is that when you say bisexual that does not automatically include trans/NB people in that attraction. That doesn't mean that a bisexual person does not find trans people attractive, just that they're not required to find trans people attractive based on their sexual preference... |
how did we switch from having operators connect our calls to being able to call people directly? | Think of you in a classroom, if the teacher gives you a graded paper and tells you to give it Karen, you know who Karen is, she's been in the same classroom as you all year long. In a small phone network, it's easy to transfer someone by name, receptionists in small offices still do that. If I told you give that paper ... |
How do animals live without dental care their whole life when we humans cannot live without cleaning our teeth everyday? | When you take your pet to the vet yearly they made suggest dental care for your pet. My sister just paid $500 for her 17 year old cat to get her teeth cleaned. Also animals not lives as long and their teeth don't have to last nesrly as ling as ours. Plus we have drink/eat a lot of sigar nowadays. Sugar is really unheal... |
How are we able to send information through the air? | It's all about electromagnetic waves. Electromagnetic waves include visible light, microwaves, x-rays, radio waves, infrared waves, Etc. The space all around you, including all of the air around you, is filled through and through with all types of electromagnetic waves. We have learned how to transmit and receive speci... |
Why does a video game cartridge require a battery to store save data, while something like an SD card doesn’t? | It's different tech. Being able to store data without a constant electrical charge is a fairly new innovation. Old cartridge games had memory in them similar to the RAM in your computer. When it loses power, it loses everything it had stored. Solid state is able to keep data in storage without electricity, which is why... |
Why is so hard to not think negative thoughts? | Pick an animal. Make sure it's not an Elephant. What's the first thing that comes to your head? Elephants. So stop thinking that you have bad thoughts and just focus on positive thoughts. The more you worry about negative thoughts, more you focus on it. Takes a lot of practice but you can do it", 'If there’s a way you’... |
Does it make a difference when buying an older film in HD/SD? | If it's something that was re-released on blu-ray at some point then chances are the digital version has also been remastered. When they re-release movies on a new format they ideally go back to the source and digitize it. It will look much better than say a VHS cassette tape or old TV broadcast if that is how you are ... |
How do 2 auto insurance claims battle each other on fault? | The insurance companies figure it out administratively, but in close cases they may have arbitration. In very, very few cases, they sue each other, often naming you and the other guy as a co-defendants. Company A would prefer to defend you, as if you have separate council you might throw them under the bus. To entice y... |
Why is it inherently worse to eat a fast food burger than to cook one at home? | It isn't *inherently* worse, but it typically is. Generally, fast food has a fair amount of preservatives in it that, while not overtly harmful, are difficult for our bodies to digest . Fast food is also tailored to be, well, fast to make, even if it means sacrificing nutrition; frying food in oil is not a healthy way ... |
Why is ice cream always harder the second time you open it? | I don't have time to grab sources right now but my college chemistry professor says it has to do with how it's frozen. At the factory, it's frozen under special conditions to keep in air and to keep water 'attached' to the other ingredients. Because the ingredients have different thaw rates, when ice cream is refrozen,... |
Why are some jobs less strenuous and higher paying than other jobs? | If there's not enough people to do a job, employers will raise the salary to get people's interest.If there's a lot of people wanting to do the same job with the same diploma, the employer will take the one who accept to be paid less than the others. |
How can a plane measure it's altitude (and how was it done a 100 years ago without our current modern tools)? | They would use a barometer. You'd have to know what the pressure at your starting altitude was and then set your BARALT accordingly. |
Why does our noses run when we eat spicy food? | Spicy food makes the brain think we're actually on fire, and a runny nose is the best way the body has to get rid of the heat that builds up. TL;DR Chili peppers are smart. Mammal brains are dumb.Your body is trying to get rid of the capsaicin by any means. That includes salivating and running noses |
Why is hunger satisfied almost instantly? | This would be your reaction. It's not universal. It depends on your brain's reaction to signals from the stomach, mouth, and intestines . Chewing gum sends signals to the brain from the mouth, which can temporarily hold off hunger pangs. This a surprisingly complex system. It also depends on how you define hunger. If h... |
Why does your body "give up" sometimes when lifting something heavy? | Your body shut down reflexively. Something was wrong, so instead of letting the brain deliberate, your body simply refused. Listen to the body. It'll let you know when injury is around the corner. Adjust to a new position, clench your muscles, and try again.I cannot speak to exactly what occured to you, but I can say t... |
How does an IRA or Roth IRA make money? Is the broker using my money to invest then I'm just getting a cut of what they make? | ELI5: Your money buys a fraction of ownership in companies. These companies hopefully generate a profit. As you are a part owner of the company you are entitled to your share of the profit._ ELI20: An IRA doesn't make money. An IRA is like a fancy flower box to hold the money you make. Most people plant seeds in their ... |
What problem do digital certificates solve in public key encryption? | Digital certificates authenticate the source of a message. The certificate is the public decryption key that matches with the private encryption key known only to a verified entity. So if you get a message from Verisign that you can decrypt using Verisign's certificate, you can be sure it was actually Verisign that sen... |
Why exactly do tornadoes occur so much over the US? | It's not just the clash of cold, dry air, and warm moist air. A few things have to happen. The warm air must get trapped under the cold air. This is an inherently unstable state as the cold air wants to sink and the warm air wants to rise. A horizontally rotating cylinder of air must form. This is most likely to form o... |
How do brands like Smartfood pop their popcorn so that it's so much fluffier than what I make at home? | Here's what I do & I make popcorn as my daily snack. I heat up olive oil in a pan on high heat. Put a large knob of butter in the oil at the start - the oil prevents the butter from burning. Wait like 30 sec for pan to get very hot, butter to melt & oil to almost be smoking. Take pan off heat for safety & add corn kern... |
If your skin is constantly replacing itself through cell division and replication, shouldn’t tattoos eventually just fade away? What makes them stay on your skin forever? | So only the top layer of your skin is constantly shedding and going through natural exfoliation. The area where the tattoo ink is placed is actually a bit deeper and stays around for longer because the ink itself is not something the body can easily get rid of. The inks have metals in them that the body can't easily ex... |
Why is it possible in the US to convict someone for several consecutive life-sentences? | It's also to give justice to the victims. If the criminal killed multiple people, for example, each victim deserves a certain individuality when it comes to the sentencing. You get a life sentence for killing Person A and another for killing Person B. |
How are my odds of winning the lottery impacted if I buy 10 tickets as opposed to 1 ticket? | 10x higher, assuming you don't repeat a combination of numbers. This in probability would amount to drawing without replacement. It's simply number of tickets multiplied by your chance to win. With replacement it would be more difficult, but even then, in this particular case, it would be right about 10x higher. |
Is the alcohol in mouthwash the same type as found in wine and beer? | Can you clarify her reasoning? If she doesn't use it simply because it contains alcohol and she also drinks alcohol, then it doesn't make any sense. On the other hand if she doesn't use it because alcohol in mouthwash makes the problems worse, then she might have a point. Alcohol in mouthwash kills both good and bad ba... |
Why do women need to be awake during childbirth? | If she's awake, she can push when doctors tell her to. Pulling on a baby's head is not good, so the force has to come from the other end. There's also some benefits to assessing mom's health. If she passes out, throws a stroke, or starts feeling pain somewhere she shouldn't, they can deal with the complication instead ... |
Why won’t “old phone” be able to work in a 5G network? Do we have to get new phones when 5G becomes a more prominent thing? | I wouldn't worry about getting a 5G phone in the nearest 5 years at least. you simply don't need this speed in places where it is going to be available. a solid LTE connectivity is fine. |
Why don't microwaves use multiple wavelengths of radiation to achieve more even heating? | Microwaves heat food up by making water molecules jiggle a log and bounce into the food molecules, making them jiggle more and heat up. The thing is, water molecules will only get that extra jiggle when hit with radiation at a narrow range of wavelengths . They get really jiggly when hit with radiation near the center ... |
Why is there no way to get feedback about why you didn’t get the job? | > Why is there no way to get feedback about why you didn’t get the job? There is no tangible benefit for a business to provide such feedback, and potentially there is liability if their feedback reveals or implies some sort of legal violation. So in general it simply isn't going to be available. Often there may not rea... |
How come strengthening your hamstrings feels like stretching (deadlifts, for example), but strengthening all your other muscles feels like shaking/burning? | In a leg curl you'll have the same feeling as doing a bicep curl. However, in the deadlift, the hamstrings are maximally loaded at the stretched positions , and have less tension at the top . They are never fully shortened in a deadlift |
Why do plastic wrappers and bags make so much noise when bent/crinkled? | Since you got great answers I'll throw in a fun fact. Sun Chips released a bag design that had a 95 decibel opening noise. Reference, an alarm is ~85. 90 is a squeeze toy/subway car 100 is handheld drill/motorcycle riding", 'Why do bread makes use different material than chip makers for their bags? ThanksWhy do my cats... |
If you're in space, and gravity isn't weighing down on your limbs, if you raised your arm out, would it ever get tired? | No. To experiment this yourself, simply immerse yourself in a pool: since your density is close to 1, you are practically weightless in water . When you're immersed in water, keeping your arm up doesn't require any energy.> If you're in space, and gravity isn't weighing down on your limbs That isn't really how it works... |
Why is it easy for eyes to track moving objects smoothly, but can't smoothly turn gaze without eyes snapping to multiple points? | I'd assume that's because your eyes have an easier time following a moving object, since that means they have a reference point they can easily follow. It's just a matter of looking at that moving object and letting your eyes do the rest. It's like fixating anything to something that moves; it will move with it. Just l... |
If the Earth is rotating on its axis and orbiting the sun, why don’t objects that leave its orbit just suddenly jettison into deep space at 108,000km/hr? | It's all about vectors, the one thing we don't really take into account is the full sum of our velocities. Since we are on Earth, we too are travelling 108,000km/hr through space in a similar vector as the Earth. You don't suddenly become stationary in space when you leave the Earth's orbit. You still have the directio... |
Why do we need lenses on cameras? What does a photo look like when taken without a lens? | Look at a white wall . You won't see an image of yourself. A lens between you and the wall could allow light from your head to strike one part of the wall and your feet to strike a different part. That creates an image to be viewed or captured. A lens can be as simple as a pinhole in aluminum foil. Without a lens, a ca... |
Why don’t magnets affect Phone screens the same way they do television sets? | New TV and computer screens won't be influenced by magnets nearly as much as old screens. Old screens were CRT; they fired a beam of electrons at a screen of phosphor that would glow when hit. They used magnets to direct that beam, so more magnets would muck it all up. |
Why are flights delayed or canceled during thunderstorms and snowstorms, even though planes are designed to be able to fly through rough weather? | If there's a big thunderstorm at your airport its a problem because ground crews aren't supposed to be out and about when there's lightning. You don't want dudes going around on a big open field during a thunderstorm, that's asking for someone to get struck by lightning eventually. Snow storms cause problems because th... |
How do graphics work in modern titles? | Graphics get iterated on. The engine is stays mostly the same, but the dev might be able to come up with a better lighting equation in the last month before the game ship and put that in. Big games do lag a tiny bit behind because changing part of the renderer might require changing assets which is too much work when t... |
Why do supermarkets sell meats in a refrigerated space as opposed to a freezer where the meat would last longer? | There's the issue of the water in the meat. When water freezes and then thaws, it can damage the meat, ruining a good piece of meat and making it far worse quality. |
What happens when a file is downloaded vs uploaded, and why is uploading so much slower than downloading? | Getting to what some other people have said, which is that your internet bandwidth is not split evenly between up and down: The reason for this uneven split is because most of the time when you're browsing the internet, most of what you're sending up is pretty small because it's just the requests for whatever it is tha... |
How does your fingerprint grow back? | Imagine your skin is an escalator, going up. At the bottom of the escalator , new skin cells are generated. They push up the skin above it constantly, adding pressure. As they push, and are pushed from new cells underneath *them*, they keep getting flatter and flatter. Eventually they keratinize , resulting in the oute... |
What causes different waves to have different wavelengths on the electromagnetic spectrum? | Not an expert but a highschool student that likes physics: I'm not sure what you mean but if you are asking why photons have different wavelengths that is because of different energy levels. The more energy a photon has the more it 'moves' up and down per second , this is perceived as a different wavelength. Hope it ma... |
Why the inflation of expenses always more than the inflation of wages? | The unfortunate effect of supply and demand, sadly. Production efficiency means that not that many labour is needed to produce goods and services, meanwhile the number of people who needs said goods and services keeps on rising every year. So, there is more labour than manufacturer needs, thus there's no need to pay hi... |
Why does momentum create balance | Add to the gyroscopic forces generated by the spinning wheels the design of a bicycle having the front wheel attached to the frame at an angle. When I walk my bike I don't need to touch the handlebars, I just put my hand on the seat. When moving forward, if I tip the bike toward me the wheel steers in that direction, I... |
How do we manage to make room for dessert when we are so full from our meal? | The current theory is that you're not so much full as bored with the food you're eating. Dessert is new, so the feeling of fullness goes away. A study was done with milkshakes and chips, and people got bored with the milkshakes, so it's not really about the sugar in dessert. Study is [here].Desserts are typically high ... |
Why does someone suddenly develop an allergy to a substance that was accepted by the body previously? | I'm curious on whether something can be done about it - would small amounts of exposure to the substance that causes the allergy cause a person's system to not react badly? |
How come LEGO sets (almost) never miss a piece? | They measure the pieces by weight. If piece a piece weighs 1 oz and they need 16 pieces, they measure out a pound. They also typically error on the side of caution, so if somehow the scale says 15.5 oz, add another piece. That's why you end up with extras. |
How do antibiotics target active pathogens without harming the body? | They target proteins that only bacteria have. The best example is ribosomal antibiotics. [Ribosomes are the proteins responsible for making more proteins]. Human ribosomes are called 80s, and they are composed of a 60s and a 40s subunit. Bacterial ribosomes are called 70s and are composed of a 50s and a 30s subunit. Th... |
What is the purpose behind very lengthy prison sentences of 150 years, 200 years and more when the average human lifespan is 70 years? | In some states your are eligible for early release after serving X% of your sentence, or they'll count each day as 2 days, or even up to 3, if your good So if you get sentenced to 1000 years, you will never be able to hit the point where you might get released. |
Why heart muscles can work 24/7 nonstop but other muscles like biceps can't and get tired to they point the can't contract more? | On the cellular level cardiac tissue has Bunch more mitocondria in it than skeletal muscle. Mitochondria break down glucose and release ATP or energy cardiac tissue has far more energy factories than skeletal muscle tissue, thus don't need rest.So there are three types of muscles: skeletal , cardiac, and smooth . Cardi... |
why does the scientific community Frown upon genetically edited babies? | Genetic engineering is potentially a pandoras box of societal, political, and cultural problems. While there is an incredible amount of potential for curing diseases and conditions as a society we have to decide where to draw the line. What's the difference between turning off a gene that will cause a certain type of c... |
How does liquid from inside a cup end up at the bottom (hence the need for coasters)? | When you take a sip, a little portion of the liquid spills from your mouth to the cup, however, spills on the outside of cup. The liquid slides and drops on whatever surface you place the cup on. Also, when you're drinking a cold beverage, the air around the cup loses temperature, and so the humidity of the air starts ... |
Why are people able to get their debt removed or forgiven so easily (or not so easily)? | There are two alternatives to a modern bankruptcy regime, both worse than what we have now: 1. Nobody can get any loans ever. This would be a reaaaly bad idea. It's incredibly useful to be able to move money from the future into the present , and the vast majority of loans get paid back.2. People can't discharge their ... |
How have people been "sliding" things onto walls and such | The paint is sticky. It happens with latex paints when you apply a second coat before the first coat is fully dry. That second coat seals in the moisture so that it takes a very long time for it to fully dry. Some of that moisture seeps into the second too, making it slightly sticky. In the video you posted, sliding th... |
How does salt water from the oceans turn into fresh water in rivers and lakes? | It's actually opposite of that. Rain falls on the mountains, drains into lakes/rivers/etc, and makes its way out to the oceans. It may be a bit salty inland in the river, but that's more like ocean backwash than the ocean salt creeping back up the river.Water evaporates from the ocean and floats around in the atmospher... |
How in the world is Uber losing so much money? | There's a lot of costs you havent thought about. Lawsuits, legislation trying to slow or stop them. Their business model is very simple and can be easily replaced. I'm not sure how true it is but I was told years ago that new businesses are expected to lose money the first 5 years. |
How do animals teeth not rot away if they can not "brush" them like humans? | they do rot away eventually. they don't eat processed sugar, yes, but they do eventually rot. most animals die when their teeth start to decay and they're unable to eat their normal food. a lot of legendary maneater animals moved to humans because tooth decay made them unable to take stronger prey. |
Why are there so many knobs and buttons in a plane cockpit? | There's a lot of circuit breakers there too. Kind of like circuits in your house, or fuses in your car. There's a lot of electronics in the air craft and a lot of fuses can be blown. They need to be easily accessible to be reset. |
What would a photon "see" if it "looked" at a different photon traveling in the same direction? | They wouldn't. When something is going the speed of light, time doesn't really exist for it. Distance doesn't either. From its perspective. it began to exist and ceased to exist at the exact same moment. Even if it is going through space for trillions of years, it does not experience it. So the idea of examining anothe... |
What is gestalt psychology and how does it work? I've looked it up on the internet but tbh it just confuses me | Very simply it involves the body and using the mind body connection in therapy. It's a different set of techniques and that mind body connection as the driving push when approaching problems. |
How do rocks (track ballast) able to support a train? | They do shift, but only a small amount over a considerable amount of time. That's why every so often they have to do maintenance on the track. If you look at a typical shunting yard where the trains move slowly, you can see the bends in the rails. This isn't a problem at low speeds, so they let it be. On high speed tra... |
can everything cause an allergy reaction in humans or is it only certain things can people can be allergic to? | Only some things. There's a rare condition where a person's skin is irritated by nearly-pure water, sometimes mistaken as a water allergy, but it's not. |
Why a class of 45 students is considered a bad school and a lecture of 450 student is considered hogher education? | There are different methods to teach children and adults. Children of different age groups tend to learn differently. Teaching a child vs an adult is a completely different process. Classrooms in K-12 are better suited to a hands-on approach where a single teacher can spend more time with individual students to help th... |
Do other galaxies in the sky move? | Yes, other Galaxies rotate and move. But it occurs so slowly relative to us that we can't really notice it. |
Why dentists tell patients to not rinse their teeth after brushing? | I read that's because it washes the fluoride off your teeth. Apparently your supposed to use a fluoride mouthwash if you have to rinse out your mouth. |
How is there wind in space if there is no air to blow? For example, how would solar winds work if there's no air? | Solar wind isn't air. It's not wind like we think of here on Earth. Wind is the bulk movement or flow of gases. Here on Earth, that means the flow of air. In space, the solar wind is the stream of charged particles coming from the sun. The solar wind does have some pressure, but it's so extremely tiny , so it can't rea... |
how come Egyptian tombs take so long to be discovered? | The real answer is that most didn't. What you have is the survivor effect. Egyptian tombs were found and robbed shortly after the burials. Tutankhamen's tomb is the only intact royal tomb that has been found - the rest were all robbed in antiquity. So the Egyptians went to great lengths to try to hide their tombs so th... |
What's the significance of the 0th law of thermodynamics? | Physics is all about equations. It might be stating the obvious--but that's *required* in mathematics. You can't make assumptions. You have to have proven statements to build off of. By stating the obvious, you can allow non-obvious statements to be built. |
How do they take videos of food cooking in ovens? Is there a specific type of camera used to do so? | There are two ways. You could either design a very well insulated box that keeps an ordinary camera safe in the oven or you can cut a hole in the back of the oven and make a peephole for a camera to see through from behind. I've seen one or two YouTubers use the cutout method with microwave ovens. It can be as cheap an... |
5G mobile networks and why they are considered such a big deal | Just go back a few years and read the stories about why 4G is going to be such a big deal. It's the same reason: much more bandwidth than the current generation of mobile connectivity. |
Why do some pills have 2 different colored sides? | There's been research into the placebo effect. It turns out the placebo effect can be manipulated. Large pills have a stronger placebo effect than small pills. Colored pills have a stronger effect than white pills. And two-coloured pills have stronger effect than pills with only one colour. |
How don't we run out of air to breathe if we don't open windows in our house for long periods of time? | Your house is more exposed to the outdoors than you imagine. While it's mostly water-tight, it's far from air tight. Generally your attic is opened to the outdoors as well as your basement or crawl-space. |
What is "family love" and why is it so different from "romantic love"? | Love generally falls under four categories; platonic love , familial love , romantic love , and then miscellaneous love . Love is just the extreme form of fondness. If you like something a whole lot, you love it. However, the different types of love tend to have secondary characteristics attached to them. Romantic love... |
If almost every large animal with mobility has forward bending knees, why do so many advanced Boston dynamics type robots have rear facing knees? | Evolution isn't engineering. The robot is designed to be more efficient. Evolution is just a lucky mess of happenstance.Knees are funny. What on most animals appear to be knees are actually ankles if you look at the skeleton rather than the fleshy bits. Which tells you two things. One, humans are built kinda funny, and... |
How are we able to see through objects when they are very close to our eyes? | What you see normally is actually a sort of composite image of what both of your eyes seeing. If an object is so close that it takes up the entire field of vision for one eye but the other eye can't see it then you get the transparent effect as your brain tries to reconcile the two different images.Think of it like loo... |
When you have a stuffy nose, why does it “un-stuff” when you stand up, but stuff up again when you sit/lay? | Drains down your throat. This time of year I get sinus headaches, sometimes I get them when I sleep. They will wake me in the middle of the night, I will get up take some pain reliever and go downstairs and sit up watching TV or computer for an hour. My sinuses drain because of sitting up and I feel better. -----------... |
Why isn't aerial firefighting with helicopters used on building fires in specific situations? | > I get it that many artifacts may be destroyed by the forces of the water coming down, but it seems like they won't survive the fire anyway. Then what, exactly, are you saving by dropping thousands of gallons of water on a no-longer-structurally-sound structure? The roof can burn on top of the building or you can mayb... |
How can the US be the richest economy in the world with so much debt vs incredibly rich countries like EUA, Singapore or China? | The richer you are, the more debt you can take on. For instance, let's say you go to the bank and want to borrow $1,000,000. You might have problems having the bank give you a loan, especially if you are 5. However, Bill Gates could just sign his name and they'd give him $1,000,000 fairly easily. Also, Economies are us... |
Why does water made from melted ice cubes taste different than normal water? | Since you're speaking anecdotally about the ice from your own freezer, there's a pretty decent chance that your ice is picking up and incorporating some of the air from inside as it freezes. |
How come when you film a computer or TV screen it appears to have black bars running through it that you never normally see? | What you see on TV is a drawing that your TV has to make, for example it has to draw 30 drawings in a second which of you put side by side looks like it's moving. When your camera can take more pictures in one second then the TV can draw you will end up seeing the TV in the middle of it's drawing. |
What (if any) is the difference between people who regularly fast and people with anorexia? | When you fast, you chose to not eat food, turn it down, and plan not to eat. But if someone offered you food you would have no problem eating and enjoying it if you wanted to. It is a distinct choice for whatever reason to not eat. The mental disorder anorexia nervosa goes beyond choice, until the person suffering feel... |
How can people in a country with fertile land like Venezuela be having a food crisis? | The short version is that the Venezuelan government implemented a series of price controls on staple foods at the same time as the currency controls and declining economy made it exceedingly difficult to import food or industrial equipment used in its production. These issues have been ongoing for awhile , but have rec... |
How come Neanderthals are considered not human if we could successfully interbreed and communicate? | The same reason a donkey isn't a horse isn't a zebra. Or a lion isn't a tiger. They are close, branches on the same tree. But not the same thing. |
Could anyone explain Doppler shift to me? | For Doppler shift, the velocity of the signal being shifted is going to be constant. Consider the siren coming towards you. Sound is a series of alternating low and high pressure points, so the siren is emitting pulses which travel towards you at the speed of sound. Since the siren is moving towards you, the distance e... |
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