question stringlengths 3 301 | answer stringlengths 9 26.1k | context list |
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How does current flow in two phases from a three phase system without a neutral? | The 120V refers to [RMS](_URL_3_) rather than peak voltage. For sinusoidal electrical power, they are related as follows:
V_RMS = V_peak / sqrt(2)
where *sqrt(2)* is the square root of 2. So a 120V phase actually has a peak of around 170V with respect to ground.
When you have two phases separated by 120^o you ne... | [
"In power engineering, the voltage between two phases in a three-phase system equals times the line to neutral voltage. This is because any two phases are 120° apart, and two points on a circle 120 degrees apart are separated by times the radius (see geometry examples above).\n",
"In a three-phase system feeding ... |
Why did the practice of Astrology go from being practiced by Popes and Kings to considered witchcraft in the Christian world? | The phrasing of the question makes an argument which is not true: that astrology 'equaled' witchcraft at some point in time. This was never the case, at least in a European-North American context.
The first point, about witchcraft: astrology was never considered witchcraft in and of itself at any point as a matter of ... | [
"During the Early Middle Ages, the Christian Churches did not conduct witch trials. The Germanic Council of Paderborn in 785 explicitly outlawed the very belief in witches, and the Holy Roman Emperor Charlemagne later confirmed the law. Among Orthodox Eastern Christians concentrated in the Byzantine Empire, belief ... |
why is task manager more effective and faster rather than pressing the x or alt + f4 when something freezes? | Because being able to end a program that won't exit by normal means is one of the features of the Task Manager.
Whether you hit X on a program window or press alt+f4 you are essentially asking the program: "will you please exit?". Under normal circumstances the program will then go through whatever it needs to do bef... | [
"Because the window controls are being rendered by the application process, if the application freezes the controls will often become unresponsive too. This can make it more confusing when trying to close unresponsive applications as the display server has to detect this. \n",
"The commonplace alternation between... |
How good of a military leader was Pancho Villa? | Villa had a lot of success early on with enthusiastic cavalry charges. He brought a lot of charisma to his command, was an excellent horseman and an excellent judge of horses, and could add mobility to his already mobile troops by putting them on trains. It worked well against demoralized, badly-supported troops in s... | [
"Villa was one of Mexico's greatest military leaders. His string of victories since the beginning of the Mexican Revolution was decisive in bringing the downfall of Porfirio Díaz, the victory of Francisco Madero, and the ouster of Victoriano Huerta. He remains a heroic figure for many Mexicans. His military actions... |
When an atom undergoes alpha decay, does it lose electrons and stay neutral or keep them and become an anion? | It will lose usually more than two electrons. Alpha decay releases around 3-6 MeV of energy. That alpha particle rips electrons out since they are bound with eV of energy. The ion will eventually become neutral if there are electrons around, which is usually the case. | [
"Alpha decay is characterized by the emission of an alpha particle, a He nucleus. The mode of this decay causes the parent nucleus to decrease by two protons and two neutrons. This type of decay follows the relation:\n",
"Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an al... |
Are there any potential ways to modify the human eye to see more of the electromagnetic spectrum? | Theoretically, this is absolutely possible. You take an opsin protein from another species, or one engineered to respond to a specific wavelength, you find out it's genetic code, you package it with a correct promoter into an appropriate virus, and you inject it into the eye. In theory, it is something we could do righ... | [
"Various researchers have demonstrated that the retina performs strategic image preprocessing for the brain. The problem of creating a completely functional artificial electronic eye is even more complex. Advances towards tackling the complexity of the artificial connection to the retina, optic nerve, or related br... |
why do we have state troopers and municipal cops? | They have different jurisdictions and enforce different laws.
Muni cops are responsible for the city and enforcing city ordinances. They'll pull you over for speeding on a city street, for example.
State cops enforce state laws on highways and unincorporated areas of the state. They'll pull you over for speeding on ... | [
"Special Constables are appointed by Towns. In general, they are appointed to serve as police officers and expected to have or complete the requirements of the Police Officer Standards and Training Council in order to do so. Special Constables normally work under the supervision of a Resident State Trooper contract... |
can cycling in a well insulated room noticeably heat up the room? | Yes. This is clearly evident when you get a large number of people exercising in an enclosed, insulated space.
I remember Basic Training, ~40 people in a room doing Iron Mike's until the walls dripped with the excess moisture. Very clear increase of several degrees Fahrenheit. | [
"Besides burning (on average) between 300-500 kcal in 60 minutes, indoor cycling also strengthens the muscles of the lower body. It tones the quadriceps and hamstrings, along with working the back and hips. It can be difficult to stay at the moderate level in a class that is geared towards more intensity. The diffi... |
how propeller aircraft engines with different horsepowers but same rev speed make difference? | If you put the same propeller on two engines with different power, it will run at two different rpm's (speeds).
To run the weaker engine at the same rpm as the stronger engine, you must mount a less forceful propeller -- one that pushes less air per rotation.
| [
"Propeller engines handle larger air mass flows, and give them smaller acceleration, than jet engines. Since the increase in air speed is small, at high flight speeds the thrust available to propeller-driven aeroplanes is small. However, at low speeds, these engines benefit from relatively high propulsive efficienc... |
how does emptying the recycle bin on your computer work? | Your hard drive is like a book with a table of contents in the front.
When you write a file to the hard drive you've essentially written a page in the book, plus you've made an entry to the table of contents. Writing the page in the book takes some time, but there's no way around that.
Then, when you delete it you g... | [
"In computing, the trash (also known as the Recycle Bin in Microsoft Windows and by other names in other operating systems) is temporary storage for files that have been deleted in a file manager by the user, but not yet permanently erased from the file system. Typically, a recycle bin is presented as a special fil... |
[NSFW] - Did sexual positions evolve independently across multiple cultures, or can we trace certain positions from one culture to the next? | Hi there! After some discussion among the mods, we've removed your question. It's not a bad question - just one that's going to be difficult to answer as you're asking about multiple historical periods. (We think of these as "throughout history" questions) You're welcome to rephrase and ask about specific periods or pl... | [
"Many cultures define the transition into adultlike sexuality by specific biological or social milestones in an adolescent's life. For example, menarche (the first menstrual period of a female), or semenarche (the first ejaculation of a male) are frequent sexual defining points for many cultures. In addition to bio... |
what kind of consequences will russia face if they are held legally responsible for the downing of mh17? | The sanctions will be decided by some kind of UN vote most likely, and then individual countries can pursue whatever sanctions they wish. There's talk in the US already of not even waiting, they're convinced Russia did it and they want to push unilateral sanctions on Russia, especially for the Russian financial sector.... | [
"According to the poll conducted by the Levada Center between 18 and 24 July in 2014, 80% of Russians surveyed believed that the crash of MH17 was caused by the Ukrainian military. Only 3% of respondents to the poll blamed the disaster on pro-Russian separatists in eastern Ukraine.\n",
"On 19 June 2019, the Dutch... |
Why don't we wet the bed after we're toilet trained? | Nocturnal emissions have no bearing on bowel and bladder. completely unrelated. As a side note, daily sex and/or masturbation will prevent nocturnal emissions
While the toiler per-se is not instinctive, it is natural for many mammals to have bathroom control. Dogs and cats would be two species you may be familiar wit... | [
"Toilet training begins very early in China, sometimes within days of birth and usually no later than a month. Frequently babies are held closely by parents, grandparents or other extended family members caring for them, sensitive to when they need to relieve themselves. A child who appears ready to urinate or defe... |
what are the specific ingredients in beer that make it high in calories and carbs? | To make beer you let barley or other types of grain go through a process that extracts its starch and makes it into sugar. The wort you end up with have been sold as sweet energy drinks and is comparable to soda. The wort is then further put through a fermentation process where the sugar is being converted into CO2 and... | [
"Ethanol is a source of energy and pure ethanol provides 7 calories per gram. For distilled spirits, a standard serving in the United States is , which at 40% ethanol (80 proof), would be 14 grams and 98 calories. Wine and beer contain a similar range of ethanol for servings of and , respectively, but these beverag... |
why is the menstrual cycle the same as a calendar month? | It's coincidental. See this specific part of the Wikipedia article on menstruation:
> Even though the average length of the human menstrual cycle is similar to that of the lunar cycle, in modern society there is no relation between the two. The relationship is believed to be a coincidence. Light exposure does not ap... | [
"The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible. The cycle is required for the production of oocytes, and for the preparation of the uterus for pregnancy. The menstrual cycle occurs due to the rise a... |
equinox isn't equal | The equinox isn't necessarily defined by when the days are most even where you live (rise vs set time) but rather when the sun crosses the celestial equator and appears in the north hemisphere in the sky. (For the north hemisphere) The autumnal equinox occurs when the sun crosses in the other direction. For the souther... | [
"The name \"Equinox\" refers to the time when day and night are of equal lengths, a phenomenon which occurs on two days in a year. The theme at the Equinox Complex is to attain perfection and harmony throughout the year.\n",
"In astronomy, equinox is either of two places on the celestial sphere at which the eclip... |
Did the Germans count on being able to use the Czech tanks? | Opening a can of worms here. There was actually no such thing as the Blitzkrieg so it'd be a bit hard for something to be an essential part of it. Blitzkrieg was more of a media term to explain things that they didn't understand and the whole idea that it was some well developed doctrinal way of waging war by the Ger... | [
"The occupation of Czechoslovakia in March 1939 had provided the German military with large amounts of high quality weapons at no cost, from the arsenal of the Czech military. There was enough equipment for about 40 army divisions. The Germans integrated the Czech industry, mainly the Skoda factories, becoming part... |
why do softer tires have better grip than harder tires? | Because softer things deform and grip the imperfections in a surface. This isn't just tires, you'll probably notice that a softer a surface is, the easier it grips other surfaces. | [
"Tires called R-Compounds are commonly used in motorsports for high amounts of traction. The soft rubber allows them to expand when they are heated up, making more surface area on the pavement, therefore producing the most traction. These types of tires do not have grooves on them. Tire pressure is dependent on the... |
When my candle is lit, why does dust caught in the wax gather around the base of the wick? | When the candle is burning, the capillary forces in the wick are drawing in the molten wax. So the dust gets carried there by the flow. That's my guess at least, I haven't researched it.
| [
"A candle wick works by capillary action, drawing (\"wicking\") the melted wax or fuel up to the flame. When the liquid fuel reaches the flame, it vaporizes and combusts. The candle wick influences how the candle burns. Important characteristics of the wick include diameter, stiffness, fire-resistance, and tetherin... |
what is hdr, and why do "we" hate it? | HDR is a technique that is used to produce a wider range of brightness in photographs, it does so by taking several pictures and changing how much light is taken in each time.
These pictures are then combined into one photograph.
The reason the shittyhdr subreddit exists is because sometimes this isn't done very well ... | [
"WHDI becomes High-Bandwidth Digital Content Protection (HDCP) Certified, garnering the necessary approval for any device to deliver HD video to another device, a requirement in Hollywood movie studios. It is considered an Approved Retransmission Technology (ART). The approval allows for WHDI to begin selling devic... |
what has to happen to our recycled items before they actually get repurposed/what does the cleaning process of these items look like? | Newspapers: de-inking facilities separate ink from the newspaper fibers through a chemical washing process.
Glass: A mechanical processing system breaks the glass into small pieces called cullet. Magnets, screens and vacuum systems remove metals, labels, bits of plastic, and caps.
Any water etc left inside the glass ... | [
"Items deemed resellable are displayed for purchase in stores. Savers also has a recycling program and attempts to recycle any reusable items that cannot be sold at the stores, as well as any items that do not sell over a period of time to make room for fresh merchandise. Savers has buyers for its recyclables throu... |
why are led headlights so bright? | LED lights are more efficient at turning electricity into light. Most other lights use a lot of the energy in creating heat.
Lights that are too bright can be dangerous, but there's not a lot of standardisation for them. Some lights can have something on the front to diffuse or spread out the beam. | [
"Another field that uses this is the automotive industry. LEDs in the dashboard and instrument lighting are designed for use in mesopic luminance. In studies, it has been found that red LEDs appear brighter than green LEDs, which means that a driver would be able to see red light more intense thus more alerting the... |
why do batteries in parallel have a stronger current than batteries in sequence? | Let's say that I have an entrance to a building with two doors that guests have to pass through to get in. Each one can let 1 person through every 2 seconds. If I put them in series, each guest goes through one, and then the next. The total rate at which people get through is still the same as each individual door. If ... | [
"If the cells of a battery are connected in parallel, the battery voltage will be the same as the cell voltage, but the current supplied by each cell will be a fraction of the total current. For example, if a battery comprises four identical cells connected in parallel and delivers a current of 1 ampere, the curren... |
How do zygotes gain totipotency? | Activation of a few enzymes returns the cell to totipotency. Adding these enzymes to regular cells can make them pluripotent, this the existence of ipsc: induced pluripotent stem cells, which can be stem cells that were skin cells with the enzymes added. I don't remember all of them but there is Nanog, and Oct4 among o... | [
"Zygotes are formed by microgametes from the microgamont penetrating the macrogamonts. The zygotes develop into oocysts of two types. 20% of oocysts have thin walls and so can reinfect the host by rupturing and releasing sporozoites that start the process over again. The thick-walled oocysts are excreted into the e... |
explain the p=np problem li5. | Do you have a bicycle? Does it have a lock? If not, nag your parents to get you one, those cheap bastards.
If I told you the combination, how hard would it be for you to check if I was right? It's quick. Use the numbers I gave you and see if the lock opens. Easy! People have found a whole bunch of jobs that are easy l... | [
"The P versus NP problem is a major unsolved problem in computer science. Informally, it asks whether every problem whose solution can be quickly verified by a computer can also be quickly solved by a computer; it is widely conjectured that the answer is no. It was essentially first mentioned in a 1956 letter writt... |
Are we any closer to resurrecting humans from cryostasis yet? | No. The freezing process damages cells, as water turns to ice and expands. So they try to use different types of antifreeze, but [these are toxic](_URL_2_). And on top of that [not all cells are equally permeable](_URL_1_), especially in a state of reduced biological activity (or even none at all).
Human bodies are to... | [
"Cryonics, the practice of preserving organisms (either intact specimens or only their brains) for possible future revival by storing them at cryogenic temperatures where metabolism and decay are almost completely stopped, can be used to 'pause' for those who believe that life extension technologies will not develo... |
Why aren't animals that can see in the dark blinded by daylight? | For starters, some species *are* 'day blind'. Mostly species that sleep during the day and are only active at night. So the question really is about 'why are *some* species able to see both in very low light and very bright light'. And it is complicated.
Visual systems vary *a lot* across species so it is hard to give... | [
"Light pollution can disorient species that are used to darkness, as their adaptive eyes are not as used to the artificial lighting. Insects are the most obvious example, who are attracted by the lighting and are usually killed by either the heat or electrical current. Some species of frogs are blinded by the quick... |
eli: how can a country simply write off debt of another country? wouldn't it put the country itself in deeper debt? | Say I owe Bob $10. Say it's been years since I paid Bob and keep telling him I'll repay him later. Bob can write of my debt by telling me to forget about the $10 altogether, so that I no longer owe him the $10. | [
"Some observers such as Professor Steve Keen of University of Western Sydney, believe that many countries are hurtling towards peak debt, fueled by excess borrowing and an addiction to credit. To such observers, it appears illogical to take on ever increasing debt just to bid against each other for the same assets.... |
Mathematical History | You're in luck, Cajori's History of Mathematical Notations is available online:
_URL_0_
The partial derivative symbol was used here and there before 1841 when it was popularized by Jacobi (of Jacobian, or matrix of partials, fame). | [
"BULLET::::- An overview of the history of mathematics, in seven chapters including the development of important concepts such as number, geometry, mathematical proof, and the axiomatic approach to the foundations of mathematics. A chronology of significant events in mathematical history is also provided later in t... |
how is the ceo of turing pharmaceuticals able to raise the price of daraprim (the aids drug) and make people pay the increase, without it being considered a monopoly? | Monopolies are not per se illegal. There is arguably nothing wrong here because anyone who wants to spend the time and money to manufacture a generic can do so. This is also not the only drug that can treat toxoplasmosis. | [
"In May 2015 amfAR released a report showing that increases in intellectual property rights of pharmaceutical countries would drive up the price of some drugs that are desperately needed in the developing world, namely countries who rely on affordable antiretroviral drugs. The group says that would hamper the globa... |
Why do some people snap better/louder with their non-dominant hand? | The snapping sound is caused by your middle finger hitting your ring finger. If you haven't practiced this with your hand your middle finger will hit your palm and make a much quiter noise. However I don't know why you would only be able to do this with one hand and not the other. | [
"Finger snapping may be used as a substitute for hand clapping. The University of Michigan Men's Glee Club has a long tradition of doing this. The club's history states, \"The reason behind this (as legend goes) is you can't clap and hold a beer [at the same time]! Another possible reason is that snapping is less d... |
why are some electrical plugs so huge that they cover the outlets next to them? what is taking up all that space? | The large component is the transformer. Household voltage can easily be stepped down to a few volts. However smaller the transformer, the lower the amps. If you look at all those power adapters around your house, you will see 2 numbers: volts (V) and amps (mA). The larger the amps, the bigger the brick.
Of course, com... | [
"Within each size group, the plugs and sockets are keyed with certain \"lugs\" protruding on the outside of the plugs. Higher current plugs have more lugs to prevent them from being inserted into a lower current socket outlet, while still allowing them to be inserted into a socket outlet of the same size group rate... |
how does creatinine work in the body? | Creatinine is a metabolic byproduct that is produced in muscle tissue. Specifically it is used as an indicator of kidney function because the kidneys are the only organs that filter it out of the blood. It is formed in the body, usually at a fairly set rate and the kidneys will remove it at a set rate. Normally we e... | [
"Creatinine formation begins with the transamidination from arginine to glycine to form glycocyamine or guanidoacetic acid (GAA). This reaction occurs primarily in the kidneys, but also in the mucosa of the small intestine and the pancreas. The GAA is transported to the liver where it is methylated by S-adenosyl me... |
Why are the people of a land as big as China relatively so culturally similar while Europe and the Middle East are so full of different people and cultures? | Are you sure China is as culturally similar as you say it is, or are you just unable to pick out the differences? As an ethnic Chinese, I find there are differences in the food, speech and customs of every Chinese province, especially since I have a good sense of what should be familiar.
By contrast, when in India, e... | [
"Today, China still has many close cultural links with other parts of the world, especially within East Asia, Southeast Asia and overseas Chinese community. Its cultural elements have spread across the globe due to Ancient China's influence, as well as the country's modernizing popular culture and rise as a global ... |
What's the difference between the effects on the heart due to aerobic exercise and due to amphetamine use? | The heart is a muscle. When you exercise, the increased demand for blood to skeletal muscles cause the heart to pump harder and faster. Over time, the muscle in the heart is trained to more efficiently deliver blood by increasing the thickness of the muscle. So resting heart rate in athletes decreases because the muscl... | [
"USFDA-commissioned studies from 2011 indicate that in children, young adults, and adults there is no association between serious adverse cardiovascular events (sudden death, heart attack, and stroke) and the medical use of amphetamine or other ADHD stimulants. However, amphetamine pharmaceuticals are contraindicat... |
why do gas companies ever bother lowering their prices? | Because there's more than one gas station in town. They could all leave their prices at $3 and people would still buy gas. However, if one company drops their price to $2.90 then they'll increase their market share. Perhaps everyone still buys the same amount of gas in total, but more people will choose to buy from the... | [
"BULLET::::- Low natural gas prices have resulted in lower congestion due to i) increased generation from gas-fired generators which are often located nearer to demand centers, and ii) lower fuel costs translating to lower congestion costs;\n",
"According to the World Bank, as of November 2012, the increased gas ... |
If the world's population became completely vegetarian would the amount of farmland decrease or increase? | It would decrease. Most farmland is dedicated to growing livestock feed. However, if you want to use the least possible amount of land, the way to go would be a "farm-animal free" diet which would include fish, so it wouldn't be vegetarian.
EDIT: [Here I actually found a source.](_URL_0_) "More than two-thirds of all ... | [
"Intensive farming often leads to a vicious cycle of exhaustion of soil fertility and decline of agricultural yields. Approximately 40 percent of the world's agricultural land is seriously degraded. In Africa, if current trends of soil degradation continue, the continent might be able to feed just 25 percent of its... |
How does changing the tire pressure affect the car's traction? | More lateral force can be applied through a larger contact patch given the same downforce because the contact pressure will be lower.
Therefore the shear stress between the tire and the road can be greater before losing traction. | [
"Load transfer causes the available traction at all four wheels to vary as the car brakes, accelerates, or turns. This bias to one pair of tires doing more \"work\" than the other pair results in a net loss of total available traction. The net loss can be attributed to the phenomenon known as tire load sensitivity.... |
why can an american go off to war and vote at age 18, but cannot buy a beer or a pistol until age 21? | Mothers Against Drunk Driving heavily lobbied the federal government to withhold federal highway funding from states that refuse to set the drinking age to 21. They caved. 18-21 year olds are easy to beat in a lobbying/political influence fight because so few of them vote and virtually none of them hold public office. | [
"Johnson is in favor of lowering the legal drinking age to 18, or eliminating the drinking age outright; \"I just believe that the lower the age the better you come to grips with what these substances are... If you can go to Iraq and die, or Afghanistan and die as a service man or women at 18, and you can't drink —... |
how do people get in the music industry? | Some really do get discovered on YouTube etc. But much more often, they ask to perform at bars and other public locations, where they play hundreds of times, working on their skills in front of a real audience and gradually improving (and moving to better venues). Once they get decent, some hire an agent to help get th... | [
"Music industry including companies and individuals through the new song, live performance and recordings for earn money. This industry allows individuals like singers, composers and musicians to create new songs. And the record companies sale records and sheet music. Also, the music industry has a range of profess... |
what is so special about henrietta lacks and why is she contaminating things? | Henreitta Lacks died of cervical cancer back in the 50s.
The cancer that killed her made her cervical cells immortal. Almost every other cell we know about stops dividing after about 500 divisions. This is known as the [Hayflick limit](_URL_0_).
Her cancer cells don't stop dividing. This makes them ideal for use in... | [
"Henrietta has often been praised as a cultured princess and her correspondence with Moliere, Racine, La Fontaine, Bussy-Rabutin and others is notable. She was also a lover of gardening, and it was she who created a water garden at the Palais Royal. Henrietta also amassed a large and prestigious picture collection ... |
what is "bad gas" (or "bad diesel" in my case) and what are the complications it can cause for a motor vehicle? | There are a few forms of bad diesel. Water or possible algea contamination being most common. Most diesels have a water trap that needs to be emptied every oil change. If the water is allowed to remain I've seen it rust out the fuel system internally. Diesel fuel has a lubricant in it and due to the lack of lubricity i... | [
"Diesel is less flammable than gasoline / petrol. However, because it evaporates slowly, any spills on a roadway can pose a slip hazard to vehicles. After the light fractions have evaporated, a greasy slick is left on the road which reduces tire grip and traction, and can cause vehicles to skid. The loss of tractio... |
what was the original purpose of the invention of the internet? | The internet has taken a lot of forms over the years. It began with the developement of ARPANET ( Advanced Research Project Agency Network) which was funded by DARPA (Defence Advanced Research Projects Agency) for the sole purpose of having a defense network that could function in the time of a nuclear war. | [
"In the 1950s and 1960s, with the creation of computers, is where the history of the Internet begins. In 1969 came the invention of Arpanet, the first network to run on packet-switching technology. These were the first hosts on what would one day become the Internet. The concept of email was first created by Ray To... |
What was the nightlife like during the weimar republic? | This is a question I would be very happy to answer, but to my utter shock and horror, my personal library has virtually no sources regarding pre-1900s German literature and culture. So, I will have to rely on my memory and wait for someone with more reference material to come along. That said, I do have an M.A. in Germ... | [
"Life in the Weimar Republic was marked by massive hyperinflation, crippling poverty, and political upheaval. The massive number of orphans and widows without a means of feeding themselves resulted in prostitution on a scale not seen before in Germany. Additionally, the repeal and relaxation of laws forbidding pros... |
What are historians' assessment of Jimmy Carter's legacy, both of his presidency and his post-presidential activity? | I can give you my own assessment. Jimmy Carter was an incredibly consequential foreign policy president. The Carter Doctrine, along with the Monroe and Truman Doctrines, is one of the enduring concepts in American grand strategy. It defined the Persian Gulf as an area or American national interests. On the other hand, ... | [
"Jimmy Carter is much more highly regarded today than when he lost his bid for reelection in 1980. He has produced an exemplary post-presidency, and today there is an increased appreciation for the enormity of the task he took on in 1977, if not for the measures he took to deal with the crises that he faced. Carter... |
why do people from low social classes tend to be conservative? | Where do you get this from? I dont think the data transfered for example it is proven the poor areas of america almost always vote Democrat. Blacks also always vote Democrat. Highly populated areas typically poor inner cities always vote democrat. I dont think I understand .... | [
"Lenski originally predicted that people suffering from Status Inconsistency will favor political actions and parties directed against higher status groups. Lenski continues by stating that Status Inconsistency can be used to further explain the phenomenon of why status groups made up of wealthy minorities will ten... |
Why do beards get itchy? | When you shave your hair you cut it off flat. Those flat edges are sharp enough that they grab onto the skin as they grow back out. You usually also pull on the skin as you're shaving to get a "closer" shave. This can result in the hair being cut back to below the level of your skin once you stop pulling on it. When th... | [
"Sycosis vulgaris is a cutaneous condition characterized by a chronic infection of the chin or bearded region. The irritation is caused by a deep infection of hair follicles, often by species of \"Staphylococcus\" or \"Propionibacterium\" bacteria. Asymptomatic or painful and tender erythematous papules and pustule... |
why are schools strict on females showing shoulders and exposing skin? | Because they seem to believe the archaic and stupid notion that all teenage boys are slavering hormonal beasts and the mere sight of even the tiniest bit of skin will put them into a lust filled rage and they won't be able to learn. You know, since the only education that matters is the male's. | [
"BULLET::::- Page 3 School – An all-teenage girl school where the students are required to attend topless (much to the arousal of all men they encounter; with the exception of their male teachers). They are often inspected at the gate by a teacher to ensure their nipples are erect and up to school standard. They la... |
why does the same water feel a different temperature to your body than it does to your head? for example when in the shower? | Fun fact: you can’t actually sense temperature; not in the way we usually think of it.
Instead, you sense the transfer of heat into or out of your skin. If different parts of your body are different temperatures, they will feel the same temperature differently.
There are a couple of experiments you can run to illustr... | [
"The effects of dousing are usually more intense and longer-lasting than just a cold shower. Ending a shower with cold water is an old naturopathic tradition. There are those who believe that this fever is helpful in killing harmful bacteria and leaving the hardier beneficial bacteria in the body.\n",
"There are ... |
what does 4k oled mean, and how does it differ from regular 4k? | 4K means 4K resolution; 3840 x 2160 pixels or 4096 x 2160 pixels.
OLED is an LED technology which has a very low black level (can be very dark) and terefore giving much more contrast and "life" in the image.
Most likely the 4K (without OLED) is a normal TFT or LED display, while the OLED has the OLED technology in it... | [
"4K resolution, also called 4K, refers to a horizontal display resolution of approximately 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 38402160 (4K UHD) is the dominant 4K standard, whereas the movie projection industry... |
why does 'water' keep coming out of my nose when i have a cold? what's the purpose? | This question actually has a really cool answer. The stuff that's coming out is a result of your nasal mucus membranes going into overdrive. These membranes regularly generate a little bit of mucus to help flush dirt and things out of your nasal passages. However, when you have a cold, they go a little nuts and run ... | [
"It is possible that the nasal cycle may exacerbate the nasal congestion caused by the common cold, as the lack of motility of the cilia in one half of the nose may lead to an uncomfortable sensation of not being able to shift mucus by blowing the nose.\n",
"The water should not be tap water, which may contain sm... |
as a non-american, what exactly are electoral colleges and how do they affect the us presidential election? | In the US the president is not elected by popular vote, instead he is elected by the electoral college. The representatives to the electoral college are decided by each state. Each state get's one electoral college member per member of congress they have (so the smallest states have 3 members, while large states like... | [
"The United States Electoral College is an example of a system in which an executive president is indirectly elected, with electors representing the 50 states and the federal district. Each state has a number of electors equal to its Congressional representation (in both houses), with the non-state District of Colu... |
why human immune systems cannot adapt to diseases like cancer, aids, etc. but can adapt/evolve to other illnesses that would've otherwise killed us centuries ago? | The main way the immune system recognizes threats is through the presentation of antigens. Antigens are proteins on the surface of cells. With most disease-causing things, the body can react to the antigens and recognize it as a threat.
Cancer is a large group of diseases where the body's own cells undergo slight ... | [
"The immune system extends this response to its treatments of self-antigens, softening reactions against allergens, the body, and digestive microorganisms. As the worms developed ways of triggering a beneficial immune response, humans came to rely on parasitic interaction to help regulate their immune systems. As d... |
why don't companies bring back those discontinued products people miss so much? | You assume that they haven't already considered and ruled out doing so behind closed doors. And sometimes they do, sometimes even on a recurring (annual/seasonal) basis.
But the bottom line is that the product was discontinued for a reason, and that reason was money. The hypothetical "right marketing campaign" you men... | [
"Products may also become obsolete when supporting technologies are no longer available to produce or even repair a product. For example, many integrated circuits, including CPUs, memory and even some relatively simple logic chips may no longer be produced because the technology has been superseded, their original ... |
What's the limiting factor in making bipedal robots? | If you just need it to move on an infinite plane, it would be easy. Walking up stairs and over obstacles is more complicated than just walking normally and trying to balance. And if the robot can't walk up stairs and over obstacles, wheels would be better. | [
"Six-legged robots, or \"hexapods\", are motivated by a desire for even greater stability than bipedal or quadrupedal robots. Their final designs often mimic the mechanics of insects, and their gaits may be categorized similarly. These include:\n",
"For nearly the whole of the 20th century, bipedal robots were ve... |
what makes a meat "processed" | Processed meat is any meat that is preserved by any of a number of methods, such as smoking, curing, salting, or addition of chemical preservatives. Examples of processed meat are bacon, salami, pepperoni, obviously bologna and hot dogs, most lunch meats, etc. | [
"Processed meat is considered to be any meat which has been modified in order either to improve its taste or to extend its shelf life. Methods of meat processing include salting, curing, fermentation, and smoking. Processed meat is usually composed of pork or beef, but also poultry, while it can also contain offal ... |
the difference between a pun and a play on words. | A pun is specifically a joke made using the multiple meanings of a word or exploiting that some words with different meanings sound the same. A play on words is much more broad as an exercise of wit where words are the main focus. It encompasses puns as well as double entendres, phonetic mix up, etc. | [
"Non-humorous puns were and are a standard poetic device in English literature. Puns and other forms of wordplay have been used by many famous writers, such as Alexander Pope, James Joyce, Vladimir Nabokov, Robert Bloch, Lewis Carroll, John Donne, and William Shakespeare, who is estimated to have used over 3,000 pu... |
why do actors fake eating on tv and movies, rather than just eating the food? | Cos they have many takes to get a scene right and the food is cold by the time they get to it. Or theyre tired of eating it by take 20 | [
"Specific cases on the show have raised concerns that at least some portrayals are fictional or falsified. For example, the large number of Pica-like cases where subjects claim they consume materials that are known to be fatal when swallowed in the quantities are shown. These include gasoline, camphor (contained in... |
what causes major isp's (brighthouse, comcast, etc) have frequent service outages? | Simple. It's out dated technology that can't keep up with the demands of the country. Before anyone starts downvoting, let me explain. Coaxial cable have been delivering signal into our homes since before the internet was even invented. Then companies learned how to delivery internet using a infrastructure already ... | [
"BULLET::::- On February 28, 2017, AWS experienced a massive outage of S3 services in its Northern Virginia region. A majority of websites which relied on AWS S3 either hung or stalled, and Amazon reported within five hours that AWS was fully online again. No data has been reported to have been lost due to the outa... |
why is our immediate response to pleasure closing our eyes? | By closing our eyes, we increase the sensation by limiting distractions so we can focus on the pleasure more. | [
"Conversely, it can be considered that if the eye-opening muscles are in a continually relaxed state, the activity of the sympathetic nervous system is reduced and parasympathetic dominance is attained. Matsuo raises the example of meditation, in which loosening the eyelids can result in a relaxation effect.[『文藝春秋』... |
the positions and opinions of the candidates of the 2012 us election to a non-american. | If you could clarify which posts you're most interested in it would be much easier. There's quite a long litany of positions each candidate holds. | [
"In 2006, all candidates for the United States House of Representatives and Senate were invited to respond to a 10-question survey on several health and research issues, including stem cell research, research funding and global competitiveness in innovation. Candidates' responses, along with the public’s view on th... |
Will my phone charge faster/more if my portable battery is in a higher position than my phone? | No. Or at least not noticeably so. The electricity uses the electromagnetic force to move, and the wire is built to take advantage of that fact. The force carriers (electrons) are affected by gravity, but the force at that scale is so miniscule that you would need extremely sensitive equipment to even detect it, let al... | [
"The battery contains 432 pouch cells. It can charge from 0 to 80 percent in 85 minutes using 50kW DC charging, or 45 minutes using a 100kW charger. Home charging with an AC wall box (7kW) achieves the same state of charge in 10 hours. As the I-Pace has a single-phase AC charger, it is slow to charge outside fast c... |
why is it that internet routers seem to "go bad" after a few years? | For a lot of routers, especially cheap ones, I think it's mostly an issue of cooling.
Routers are really just little computers, with a processor to make decisions about where to send traffic, and memory to temporarily store information. Like all computers, they have to be kept cool to function properly. However, the... | [
"Routing in delay-tolerant networking concerns itself with the ability to transport, or route, data from a source to a destination, which is a fundamental ability all communication networks must have. Delay- and disruption-tolerant networks (DTNs) are characterized by their lack of connectivity, resulting in a lack... |
shouldn't bi-weekly mean twice in the same week instead of once in two weeks? | Yes, it should. Look at bi-annual vs biennial. The former means twice a year, the latter means every other year.
Though it seems as though bi-weekly can actually mean either twice a week or every other week _URL_0_ which is even more confusing. | [
"Biweekly means either occurring every two weeks, or occurring twice every week. This causes ambiguity when the term is used. As a result, in the United Kingdom, Ireland, Australia and New Zealand, the term fortnightly is more commonly used for an event that occurs every two weeks.\n",
"'La quinzaine' is used in ... |
What caused the Age of Battles? | There wasn't an Age of Battles, to put it pithily. Battle has always been a part of war, but by their very nature, decisive battles are rare things. Siege, raid, and pitched battle are all tools available to a commander, and there are many problems in defining an age by one of them.
Beyond the questions of methodolo... | [
"BULLET::::- LeBlanc, Steven, \"Constant battles: the myth of the peaceful, noble savage\", St. Martin's Press (2003) argues that recurring famines have been the major cause of warfare since paleolithic times.\n",
"Warfare occurred throughout the history of Ancient Greece, from the Greek Dark Ages onward. The Gre... |
why hasn't the leaning tower of pisa fallen over? will it eventually fall? | Because engineers have anchored it. They drove a ton of steel piles into the ground and connected them to the tower with steel cables.
It won't fall any time soon. With enough money, material and care, anything can stand forever. | [
"The Leaning Tower of Pisa () or simply the Tower of Pisa (\"Torre di Pisa\" ) is the \"campanile\", or freestanding bell tower, of the cathedral of the Italian city of Pisa, known worldwide for its nearly four-degree lean, the result of an unstable foundation. The tower is situated behind the Pisa Cathedral and is... |
what does it mean to unlock your phone to another service provider? and why, depending on the brand, does it cost so much and take so long? | Most phones are *capable* of talking to other carriers that use the same networking technology. For example, in the USA, AT & T T-Mobile and I think a couple others all use the same GSM system.
However, if you buy a phone through one of those carriers, they put a piece of software in place that checks who you're tryi... | [
"If the handset is purchased as part of a promotional package or at a preferential price and the customer requires the unlocking before the expiry of the minimum period provided in the contract for communications services concluded with the operator, the customer will have to pay both the unlocking fee and the pena... |
how does 1080i work? | The i for "interlaced" means first your TV draws the even-numbered lines for the whole screen, then the odd-numbered lines.
By contrast in p for "progressive" mode your TV draws all the lines in order. | [
"Within the designation \"1080i\", the \"i\" stands for interlaced scan. A frame of 1080i video consists of two sequential fields of 1920 horizontal and 540 vertical pixels. The first field consists of all odd-numbered TV lines and the second all even numbered lines. Consequently, the horizontal lines of pixels in ... |
why does the stomach flu (norovirus, rotavirus) present such intense, violent symptoms in most people? | Both. The pain is caused by the virus to basically make you immobile, noone wants to move much when in a lot of pain, vomiting and diarrhoea are two great ways to spread the virus to those taking care of you because you yourself are too sick to do anything. The Diarrhoea is most likely due to the virus' attacking the c... | [
"Rotavirus, norovirus, adenovirus, and astrovirus are known to cause viral gastroenteritis. Rotavirus is the most common cause of gastroenteritis in children, and produces similar rates in both the developed and developing world. Viruses cause about 70% of episodes of infectious diarrhea in the pediatric age group.... |
If stars have more planets than previously thought, would this "add " enough mass to galaxies so we don't need dark matter for explaining their dynamics? | This can't explain astronomical observations. There is about 4-5 times as much mass as we can see in star form, and planets typically weigh at most a few tens of a percent of their stars, but often much less. If planets weighed more than stars, we wouldn't see the orbits that we do.
There was an idea that the missing ... | [
"Current models also predict that the majority of mass in galaxies is made up of dark matter, a substance which is not directly observable, and might not interact through any means except gravity. This observation arises because galaxies could not have formed as they have, or rotate as they are seen to, unless they... |
What separates the historical method from journalism? | I trained as an historian to doctoral level, but spent six years working professionally as a journalist and have continued to freelance since that time, so I hope that I'm in a decent position to draw some lines for you here. I should stress that these lines are not hard-and-fast, but I do think that the core differenc... | [
"Journalism is the production and distribution of reports on recent events. The word journalism applies to the occupation, as well as citizen journalists using methods of gathering information and using literary techniques. Journalistic media include print, television, radio, Internet, and, in the past, newsreels.\... |
What is AskScience's opinion on /r/NoFap? Is there actual evidence that not masturbating will positively affect a person's energy and motivation? | * Refraining from masturbation influences the testosterone levels for men and most men will tell you that this is a positive thing. There has been an interesting [study](_URL_0_) about the abstinence of ejaculation for a longer period of time. In this study, it was found that after exactly 7 days, there was a significa... | [
"After abstaining from porn and masturbation for a period of time, some of NoFap's users claim to experience \"dramatic increases in social confidence, energy, concentration, mental acuity, motivation, self-esteem, emotional stability, happiness, sexual prowess, and attractiveness to the opposite sex\". Some NoFap ... |
what is title insurance | title insurance protects you from any financial loss due to problems with title.
when you buy a house, it's recorded in public records. anyone that has a claim on the house is recorded as well. however, mistakes happen, reports get lost, public records might not be complete, etc.
so if down the line, if it's di... | [
"Title insurance differs in several respects from other types of insurance. Where most insurance is a contract where the insurer indemnifies or guarantees another party against a possible specific type of loss (such as an accident or death) at a future date, title insurance generally insures against losses caused b... |
how are hummingbirds able to hover and fly in any direction? to clarify, what is going on aerodynamically that allows this to happen? | Pretty much in the same way as a helicopter, except the wings don't go all the way around, but move back and forth instead. While flapping they generate lift/thrust, which supports the bird in the air.
There is a lot of aerodynamically interesting stuff going on around the wings, and the birds make small adjustments t... | [
"Hummingbirds have specific morphological adaptations that enable them to fly forwards, backwards, sideways as well as hover for extended periods of time. Hovering flight specifically is supported in Eurotrochilus by abbreviated ulnae and humeri and developed humeral protrusions.\n",
"During turbulent airflow con... |
What did Roman legionnaires actually do with the land they got after their tour of duty, and could it actually sustain their owners? | I'm not 100% sure if this really counts as a follow up question, but somewhat related to this I guess. It's my understanding that giving land to soldiers was practiced by the Successor kingdoms too. Was that any different than the Roman system in how the land was distributed or used? | [
"Gaius Marius, as part of the Marian Reforms of 107 BC, allowed these non-land-owning Romans to enlist in the Roman legions. For the first time, men no longer had to own property to fight for Rome. Because these men had no property, they became the clients of their generals and veterans looked to them for land or m... |
why are new smartphone processors hexa and octa-core, while consumer desktop cpus are still often quad-core? | The name of the game is efficiency. Virtually everything done on the hardware side of cell phones is aimed at the goal of lowering power consumption.
Usually, the best way to go about it with a processor is to lower the clock speed. Lower speed means lower heat dissipation, which means the electronics perform more e... | [
"Most modern mainstream and value CPUs are made with a lower TDP to reduce heat, noise, and power consumption. Intel's dual-core Celeron, Pentium, and i3 CPUs generally have a TDP of 35–54 W, while the i5 and i7 are generally 64–84 W (newer versions, such as Haswell) or 95W (older versions, such as Sandy Bridge). O... |
how do bike/car stuntmen learn to do it without dying? | Firstly, they can practice with safety equipment. You can have mats and nets and other things to soften the landing of a failed attempt.
Also, they start with smaller, safer types of tricks and work their way up.
Lastly, failing isn't necessarily a death sentence. Just broken bones and stuff. So they try - and fail -... | [
"Stunt riding generally consists of wheelies, stoppies, and other variations on wheelies. Pit bikes can be used for stunting. Serious stunting requires many modifications including pegs and other optional mods such as an additional lever above the clutch for the rear brake this is used encase your right foot is not... |
Were any African countries positively impacted by the colonial era? | There is really no measure of whether a country was overall Positively or Negatively affected by the colonial era. Rather, there were positive effects and negative effects in different areas and to different peoples. A Black officer in the King's African Rifles could certainly consider himself positively impacted by th... | [
"Colonial powers in Africa wanted native Africans to wait patiently for limited political concessions and better career opportunities. Due to their exclusion from the negotiations of the 1919 Treaty of Versailles — the most important of the peace treaties that brought World War I to an end — black ex-servicemen and... |
What is the cause of diffusion and osmosis? How does it work? | There is a chemical potential difference because of different free energy for the different concentrations. Systems tend toward the lowest energy configuration, which occurs when there is no chemical potential difference.
Basically, the system is thermodynamically most stable when there is no concentration gradient.... | [
"Simple diffusion and osmosis are in some ways similar. Simple diffusion is the passive movement of solute from a high concentration to a lower concentration until the concentration of the solute is uniform throughout and reaches equilibrium. Osmosis is much like simple diffusion but it specifically describes the m... |
Is there a search engine (of sorts) where you can search for the earliest recorded use of a certain word? | Unless I'm mistaken, I believe that's what the Oxford English Dictionary is supposed to do. I'd check there first. | [
"Early search engines looked for documents containing the words entered by the user into the search box . These are known as keyword search engines. Boolean search engines add a degree of sophistication by allowing the user to specify additional requirements. For example, \"Tiger NEAR Woods AND (golf OR golfing) NO... |
What is the most widely accepted explanation for the Late Bronze Age collapse? | Well, the consensus is generally something like "it was the Sea People, but it was also a bit more complex". The Sea People raids leading to the collapse captures the imagination, yet the view of raids in the Levant being the sole reason is starting to fade a little.
Cline's recent book deals really well with this an... | [
"The \"Bronze Age collapse\" is the name given by those historians who see the transition from the Late Bronze Age to the Early Iron Age as violent, sudden and culturally disruptive, expressed by the collapse of palace economies of the Aegean and Anatolia, which were replaced after a hiatus by the isolated village ... |
how do chinese people alphabetize? | Just like everyone else; the English alphabet doesn't change if you're Chinese...
On a more serious note, there are two ways:
1. You group in radicals (i.e. the radical 女 means "woman" and makes all characters that contain it have a feminine quality:
- 妈 = Mother
- 姐 = older sister
- 好 = good
Within radicals, you... | [
"The Chinese orthography centers on Chinese characters, which are written within imaginary square blocks, traditionally arranged in vertical columns, read from top to bottom down a column, and right to left across columns. Chinese characters denote morphemes independent of phonetic change. Thus the character (\"one... |
What happened/happens to military dead on the losing side? | You should narrow it down to a time period, specific war or countries. This is too broad to give a good answer. | [
"A person who is not a battle casualty, but who is lost to his organization by reason of disease or injury, including persons dying from disease or injury, or by reason of being missing where the absence does not appear to be voluntary or due to enemy action or to being interned.\n",
"On 23 February 2011, at a fo... |
why do so many water droplets stay in place on a glass shower door after you are done? | Water molecules would kinda prefer to be close to other water molecules rather than to air molecules so they gather together in drops (you can Google water surface tension if you like). While the shower glass may look smooth to us its tiny bumps seem rough to the little water droplets so they cling where they are rathe... | [
"To create the effect of a thin layer of condensation forming on the outside of glasses containing cold liquid, dulling spray may be applied, with paper or masking tape protecting the non-\"frosted\" areas. More pronounced condensation and dew drops are imitated by spraying the glass with corn syrup or glycerin.\n"... |
Any background info on this Greek artifact? | Probably a krater, illustrated with satyrs. Here they are pouring wine ( or, more precisely, likely wine mixed with water, from just such a krater). As satyrs were supposed to be constantly looking for sex ( therefore hypersexuality in men was once called satyriasis) it is perhaps a humorous comment on this one's pri... | [
"Greek artifacts were found in the bay of Vičja near Ložišća on the estate of the Rakela-Bugre brothers. Many of the objects belonging to this still unexamined site are now on display in the Archeological Museum of Split.\n",
"The Archaeological Museum of Delos () is a museum on the island of Delos, near Mykonos ... |
whats the difference between sugar in fruits, sugar in sweets, sugar in normal food (like potatoes, meat) and raw white sugar that i buy in supermarket? which one is worse for my health? | Sugar is a category of molecules, including monosaccharides (one molecule, like glucose or fructose), disaccharides (two monosaccharides stuck together, eg 1 Glucose + 1 Fructose = 1 Sucrose), and polysaccharides (many mono or disaccharides stuck together, eg Starch which is a whole bunch of glucoses).
The sugar you f... | [
"Sugar is a very versatile ingredient and is used in many of food and products we consume every single day. What makes sugar different is the way it interacts with the other ingredients and systems within the food as well as how it is treated. When it is heated enough to break the molecules apart, it generates a co... |
why are med schools and residencies so selective when there is a national shortage of doctors? | Wow, I'm so lucky the dropped the standards for becoming a Doctor, otherwise I would never have made it. So anyway, I'll be preforming an epend... apetand.... a procedure an you. This might fix the problem, I hope. If not we'll try something else. Hell, the body has 2 of most things for a reason so I can probably take... | [
"Though India has many medical schools and produces thousands of medical graduates every year, there is a great shortage of doctors in rural areas. Most graduates do not wish to practice in rural areas due to understaffed hospitals and inadequate facilities.\n",
"BAPIO estimates that there are around 40,000 docto... |
why don't companies like boeing and rolls-royce use robots in their manufacturing processes? | Huge amounts of automation are used.
Automating final assembly of these parts would be hard. If they made millions of engines, they would do it. But assembling a few per day is easier and more cost effective to do with people.
It's a matter of cost vs benefit. Do you spend millions automating something, or pay hundre... | [
"Advanced industrial robots, also known as smart machines operate autonomously and can communicate directly with manufacturing systems. In some advanced manufacturing contexts, they can work with humans for co-assembly tasks. By evaluating sensory input and distinguishing between different product configurations, t... |
why is plastic so bad for the environment if it's raw material literally comes out of earth ? | The raw materials are converted into something nature has never experienced before. There are no organisms capable of processing it, so plastic trash might as well be everlasting rocks, but with no positives and countless negatives for the environment (especially marine life).
The problem is that plastics are less rob... | [
"The distribution of plastic debris is highly variable as a result of certain factors such as wind and ocean currents, coastline geography, urban areas, and trade routes. Human population in certain areas also plays a large role in this. Plastics are more likely to be found in enclosed regions such as the Caribbean... |
why are large objects cgi in a normally 2-d animated movie or tv show? | It's cheaper to animate. The hardest thing to animate is movement so that takes time and time=money. Why the giant is a cgi model is because it's easy to make it a 3D it model. Robots, cars and aircrafts are the things that mostly gets to be cgi in 2D animations because their movements are much easier to calculate and ... | [
"Nevertheless, despite the fluidity of CGI animals and monsters, purely visual effects are often panned, or, at least, not preferred by discerning film viewers. It is extremely difficult to mimic realistic lighting, leading to most CGI creatures and characters looking obviously fake when placed alongside real envir... |
How does chlorine gas kill you? | Chlorine gas will react with the water in the mucous/linings of your lungs and form hydrochloric acid. This will destroy your lung's ability to take in oxygen and will be very painful. Enough gas and you will die from lack of oxygen. | [
"Chlorine is a toxic gas that attacks the respiratory system, eyes, and skin. Because it is denser than air, it tends to accumulate at the bottom of poorly ventilated spaces. Chlorine gas is a strong oxidizer, which may react with flammable materials.\n",
"Once inhaled, chlorine gas diffuses into the epithelial l... |
What are the physics behind surviving a fall from 3km up without a parachute? | Soft earth, aka lots of decaying matter could be enough. Generally not hitting anything overly rigid would increase your chances.
People have occasionally survived falls from great heights over the years
_URL_3_
_URL_0_
_URL_2_
_URL_1_ | [
"Thanks to large unpopulated areas to jump over, 'stuff' jumps become possible. These jumps consist of skydivers leaving the aircraft with some object. Rubber raft jumps are popular; where the jumpers sit in a rubber raft. Cars, bicycles, motorcycles, vacuum cleaners, water tanks, and inflatable companions have als... |
why do reditors get so upset over reposts? | Usually it's not the repost itself that upsets people, it's the reposter trying to take credit for a repost as original work. | [
"Redlining has a multiplicity of effects on the way our systems are set up today. Financial implications, benefits and public safety regulations impact the way that people who live in the \"Hood\", (often people of color) have come to relate to themselves and society. Hood Culture is reflective of the ways people o... |
If any of the planets orbiting stars that we have discovered had lights similar to earth (city lights that can be seen from space) could we see it with our telescopes? | I'm pretty sure we aren't capturing images of these planets but instead know they exist due to the light they block between our view and the sun they are orbiting. The representations of these planets that you see in the media are artist interpretations of what those planets might look like. In reality, NASA has a li... | [
"Both Corot and Kepler have measured the reflected light from planets. However, these planets were already known since they transit their host star. The first planets discovered by this method are Kepler-70b and Kepler-70c, found by Kepler.\n",
"On March 22, 2005, NASA released news that infrared light from the p... |
how old is that story about Alexander crying salt tears because there were no more worlds to conquer? | It doesn't appear in any ancient texts!
Segrais writes that Greek Historians claimed that Alexander wept at hearing the legend of Achilles, Plutarch has Julius Ceaser weeping because he can't match up to Alexander's accomplishments. But no where does Alexander weep because 'he has no more worlds to conquer.'
The ea... | [
"... said Alexander 'Truly, then, all the inhabited world is mine. West, north, east, south, there is nothing more for me to conquer.' Then he sat down and wept because there were not other worlds for him to conquer.\n",
"Arrian states that all his sources agree that \"for two whole days after Hephaestion's death... |
what is a purchase order? | It's basically a contract. A company or government agency issues a purchase order when they have approved the purchase of a product or service from a certain vendor for a specific price. It's like saying, "We agree on the terms of this purchase and we will pay the price in this purchase order upon billing." | [
"A purchase order (PO) is a commercial document and first official offer issued by a buyer to a seller indicating types, quantities, and agreed prices for products or services. It is used to control the purchasing of products and services from external suppliers. Purchase orders can be an essential part of enterpri... |
How do you differentiate between history and mythology? | This encroaches on a difficult topic because it implies an evaluation of a range of religious texts that are approached with faith rather than academic scrutiny. Most people tell legends (narratives generally told to be believed) that deal with past times. These historical legends include etiological legends (narrative... | [
"In present use, \"mythology\" usually refers to the collected myths of a group of people, but may also mean the study of such myths. For example, Greek mythology, Roman mythology and Hittite mythology all describe the body of myths retold among those cultures. Folklorist Alan Dundes defines myth as a sacred narrat... |
A question about artificial limbs. | The problem you mention is an open research question, and lots of people are working on how such an artificial limb may work.
A researcher at the University of Pittsburgh named [Andy Schwartz](_URL_1_) recently made headlines and [a 60 Minutes special](_URL_3_) on a brain machine interface for paralyzed patients. The ... | [
"Prosthesis is a synthetic alternative for missing limbs, teeth, and various other body parts. Advances in prosthetic limbs have increased greatly during the twentieth century. The use of new materials such as modern plastics, complex procedures and better pigments have created lighter in weight and more realistic ... |
Has there ever been any experiments showing any kind of seemingly paranormal activity, such as objects floating on their own, with no visible explanation in sight, or episodes of mental illness with no known diagnosis? | No double blind study has ever produced plausible paranormal activity.
There have been lots of episodes of mental illness with no know diagnosis, but that really is just reflective of how complex and imprecise mental illnesses are. | [
"Among modern theories are those connected to paranormal activity, such as abduction by aliens. Fictional use of this premise was featured in the \"Doctor Who\" serial \"Horror of Fang Rock\". The mystery also was the inspiration for the composer Peter Maxwell Davies's modern chamber opera \"The Lighthouse\" (1979)... |
US/Israel before and after Suez | > 1) What was the US stance on Israel at its inception? I imagine the US would try to win the favor of the whole Middle East (gaining foundational regional influence over the Soviets) but when the Soviets won the social favor of anti-imperialist Arabs, the US made an anchor out of Israel
The original US stance was sl... | [
"During the 1956 Suez Crisis, the Soviet Union sided with Egypt. The USSR viewed the nationalization of the Suez Canal as important to the removal of Western influence from within the Middle East. Additionally, the Soviet Union was willing to fund Egypt because in return, it received access to warm-water ports, whi... |
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