question stringlengths 3 301 | answer stringlengths 9 26.1k | context list |
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if a storm is fed by sea water, how does the resulting rainfall come down as fresh water? what happens to the salt? | The sun heats the water. Water vaporizes into the air. The salt doesn’t vaporize but stays in the sea.
The water damp forms clouds and from the cloud it rains down again. | [
"When hurricanes surge upon shore from the ocean, salt is introduced to many freshwater areas and raises the salinity levels too high for some habitats to withstand. Some are able to cope with the salt and recycle it back into the ocean, but others can not release the extra surface water quickly enough or do not ha... |
if space is made out of vacuum, how come satellites, like voyager, are able to capture sound? | They don't capture sound. The instruments that still function measure radiation. You can convert that data into sound waves; its analogus to displaying the data on a graph, it's just another way of looking at it, but doing so isn't much more than a novelty for a press release. | [
"There is no air in outer space, nor there is any other type of medium capable of transmitting any vibration from a source to a human ear. However, there are sources in outer space that do vibrate at frequencies that would be audible by a human, if only there were some sort of transmitting media to carry those vibr... |
I have never heard a satisfactory explanation for the active camouflage of some octopi and chameleon's to mimic their surroundings down to the details. | It's not a chemical reacation, it's their chromatophores changing size/shape.
Last thing I read about how they match patterns, especially those behind them (they can't see it) was "we don't know". Presumably they get a look at it at some point or see what's on their left/right and produce a blending pattern that matc... | [
"The term countershading has a second meaning unrelated to \"Thayer's Law\". It is that the upper and undersides of animals such as sharks, and of some military aircraft, are different colours to match the different backgrounds when seen from above or from below. Here the camouflage consists of two surfaces, each w... |
how can the us national debt be over $23 trillion if that much money doesn’t even exist in the world? | Person A lends a coin to person B.
Person B then lends that same coin to person C.
Persons B and C now have a combined debt of 2 coins from borrowing the same coin. | [
"The total national debt of the United States in the United States was $18.527 trillion (106% of the GDP) in 2014. The United States has the largest external debt in the world and the 14th largest government debt as a % of GDP in the world.\n",
"U.S. household and non-profit net worth exceeded $100 trillion for t... |
Did Jesus and Muhammad, without a doubt, exist? | You might want to check out our FAQ:
[Section on Historical Jesus](_URL_0_)
[(Admittedly sparse) Section on Historical Muhammad](_URL_1_)
This shouldn't discourage new answers! | [
"According to hadith collections, in 631 an Arab Christian envoy from Najran (currently in northern Yemen and partly in Saudi Arabia) came to Muhammad to argue which of the two parties erred in its doctrine concerning Jesus. After likening Jesus' miraculous birth to Adam's creation, Muhammad called them to \"mubaha... |
why are we told to shut down the usb- connection before removing the cable/device? | You could lose everything on the drive. Basically a USB is reading and writing data to and from the computer, if you pull the device while it's writing a file it'll corrupt the file and can possibly corrupt the whole drive (unlikely but not impossible) I for example was running a game off of an external harddrive and s... | [
"Cables can easily become tangled, making them difficult to work with, sometimes resulting in devices accidentally becoming unplugged as one attempts to move a cable. Such cases are known as \"cable spaghetti\", any kind of problem diagnosis and future updates to such enclosures could be very difficult.\n",
"Some... |
What makes Copper sulfate blue, and white when heated? | It has to do with the geometry of the copper(II) atom in the hydrated and dehydrated forms. In the hydrated state, the copper has 6 bonds to other atoms in what we call an octahedral configuration. When you heat up the salt, you start to drive off the water, causing the copper to adopt a different geometry; in this ca... | [
"BULLET::::3. Copper(II) sulfate (bluestone) (CuSO.5HO) is a blue crystalline solid that when exposed to air, slowly loses water of crystallization from its surface to form a white layer of anhydrous copper(II) sulfate.\n",
"Copper(I) sulfate, also known as cuprous sulfate and dicopper sulfate, is the chemical co... |
How do Anglerfish prevent tissue rejection when males are grafted to females? | It's not useful to think of anglerfish males not as fusing into the female and becoming part of the female anatomy but it is better to think of it as males transforming their morphology to become [better parasites] (_URL_0_) and needing to fuse to the skin to take advantage.
The males don't actually "die" in the sen... | [
"In certain species, male adaptation will include the process of pedipalp damage. Males in species of the golden orb weaver, for instance, can protect their paternity by obstructing the female's genital openings with fragments of their copulatory organs. The male will actively participate in damaging his genitals b... |
why do we want to be entertained, can't we settle with a boring life? | Entertainment stimulates the brain. Our mind favors constant stimulation which is why being bored is... bad. | [
"People who engage in hobbies have an interest in and time to pursue them. Children have been an important group of hobbyists because they are enthusiastic for collecting, making and exploring, in addition to this they have the leisure time that allows them to pursue those hobbies. The growth in hobbies occurred du... |
What exactly were the causes of the Napoleonic Wars? | I really enjoy this topic. If you want to read more, I highly recommend Frank McLynn's biography on the French Emperor, Napoleon, where he postulates much of the foreign policy decisions made were heavily influenced by the Corsican's personal state.
So after the War of the Second Coalition, which saw France beat back... | [
"The Napoleonic Wars were a series of conflicts involving Napoleon's French Empire and changing sets of European allies by opposing coalitions that ran from 1803 to 1815. As a continuation of the wars sparked by the French Revolution of 1789, they revolutionized European armies and played out on an unprecedented sc... |
do stronger muscles expend the same amount of energy to do the same amount of work? | It takes the same energy to move the weight, but strong people can be more efficient, for certain tasks. We have three energy systems in the muscle. The aerobic system uses glucose + oxygen, and it can power you through an entire marathon. The anaerobic system doesn't require oxygen, but it is much less efficient, i... | [
"The energy that is absorbed by the muscle can be converted into elastic recoil energy, and can be recovered and reused by the body. This creates more efficiency because the body is able to use the energy for the next movement, decreasing the initial impact or shock of the movement.\n",
"Maximum force decays expo... |
why is child abuse such a huge problem among politicians in the uk, what's the backstory? | It has been said that high up politicians have been abusing children for 30 years, using their status as a way to get away with it. The children didn't go to the police out of fear, and when they did, the police didn't believe them. In fact, if the Jimmy Savile scandal didn't bring child abuse into the mainstream media... | [
"Adolescent abuse towards parents and even grandparents is a problem in the United States as well as other countries around the world but it is something not often discussed or reported because most family abuse in general remains hidden from public view until law enforcement becomes involved. Child abuse and spous... |
how are space agencies sure they are not contaminating mars/themoon, and why do they care? | Well, they use very rigorous clean room techniques to minimize the amount of biological contamination that is on our probes. Beyond that, the harshness of the environment is likely to whittle down at least some of what small amount they miss. But they are not sure they are not contaminating the objects, they probably m... | [
"BULLET::::- NASA scientists report a possible manned mission to Mars may involve a great radiation risk, based on the amount of energetic particle radiation detected by the RAD on the Mars Science Laboratory while traveling from the Earth to Mars in 2011–2012.\n",
"On 31 May 2013, The NASA scientists reported th... |
In ancient Rome, were there individuals or groups who were disgusted or against the games? Or was this simply an activity loved by all? | There were definitely people against it. From Seneca's *Epistelae* VII:
> I turned in to the games one mid-day hoping for a little wit and humor there. I was bitterly disappointed. It was really mere butchery. The morning's show was merciful compared to it. Then men were thrown to lions and to bears: but at midday to... | [
"Gladiatorial games, usually linked with beast shows, spread throughout the Republic and beyond. Anti-corruption laws of 65 and 63 BC attempted but failed to curb the political usefulness of the games to their sponsors. Following Caesar's assassination and the Roman Civil War, Augustus assumed Imperial authority ov... |
Why do operating systems slow down both over time and longer since it has been since the last reboot and how do high reliability/high uptime systems mitigate this? | That's more a problem with Windows rather than a property of all operating systems. The specific problem is memory leaks (read the other threads on Computing from today if you want to learn about them). RAM doesn't get deallocated whenever it should be, and as a result the computer has to use the hard drive for stora... | [
"Adrian Kingsley-Hughes, writing for ZDNet, believes that the slow-down over time is due to loading too much software, loading duplicate software, installing too much free/trial/beta software, using old, outdated or incorrect drivers, installing new drivers without uninstalling the old ones and may also be due to m... |
how do the cones in our eyes detect specific wavelengths of light and why can't we just add more cones to expand our internal color viewing range? | The specific difference is in the proteins called "photopsins" within the cone cells. These three different kinds of proteins are sensitive to different wavelengths of light.
We can't "add more cones" because we don't have the ability to synthesize living cells of arbitrary makeup, and even if we could there is no gua... | [
"Cones require significantly brighter light (that is, a larger number of photons) to produce a signal. In humans, there are three different types of cone cell, distinguished by their pattern of response to light of different wavelengths. Color experience is calculated from these three distinct signals, perhaps via ... |
What's the most important trend in historical research today? | Yes, but I think right now we are reappraising the many trends that have come to light or have gotten more press since the early 1990s.
'The Cultural Turn' is probably still the most prevalent and widely used by scholars today. It originated in the 1970s and continues today. In simple terms, it's a reappraisal of past... | [
"The historical research topics range from the Middle Ages until the 21 century. In the early phase, research projects on the Middle Ages and the Early Modern Age dominated the institute’s work. Much effort was invested into securing the deeds and charters of the Merovingian Empire. Beginning in the 1970s, research... |
How literate were Napoleon Bonaparte & Jean d'Arc in the French language? | Concerning Joan, no she would not have to be able to read to read the Bible, the local priest would do that for you as the mass.
Do not mix intellect and knowledge. She was probably not knowledgeable at all but would probably be intelligent enough to do what she did. I did not study Joan extensively so I will leave t... | [
"Napoleon was routinely bullied by his peers for his accent, birthplace, short stature, mannerisms and inability to speak French quickly. Bonaparte became reserved and melancholy applying himself to reading. An examiner observed that Napoleon \"has always been distinguished for his application in mathematics. He is... |
why do webpages sometimes load incorrectly with mostly text on a white background, and a simple refresh magically fixes the problem? | The CSS got messed up. CSS basically tells your browser how to show the content, and when it's missing you get the default font and all sorts of glitches.
F5 starts from a clean slate so whatever it was which resulted inn the CSS not getting sent properly has another chance of working. | [
"When a page consists only of useless content, there are several ways to remove that content. The simplest way, available to all users, is simply to blank the page. However, this interferes with page existence detection, unless an extension is installed to treat blanked pages as though they were nonexistent. Blanki... |
why don't we get goosebumps on our face? | Goosebumps appear when the Erector Pilli muscle (very close to the hair follicles) contracts. These muscles are slightly larger in Vellus hair (the fine hair that covers our bodies save for palms and soles) follicles than facial hair follicles. | [
"In humans, goose bumps can even extend to piloerection as a reaction to hearing nails scratch on a chalkboard, listening to awe-inspiring music, or feeling or remembering strong and positive emotions (e.g., after winning a sports event, or while watching a horror film).\n",
"Humans also bear some vestigial behav... |
why does engine size seem to have no bearing on horsepower? what makes one engine so much more powerful than another? | Horsepower is a function of torque -- meaning, horsepower is calculated from how much torque an engine produces. The formula is:
Horsepower = (Torque * RPM) / 5252
So? So this means that through some combination of engineering/design, you can make smaller engines perform better than larger ones -- but they all are ... | [
"For piston engines, an engine's capacity is the engine displacement, in other words the volume swept by all the pistons of an engine in a single movement. It is generally measured in litres (l) or cubic inches (c.i.d., cu in, \"or\" in³) for larger engines, and cubic centimetres (abbreviated cc) for smaller engine... |
if i wanted to start my own internet company, where would i get my internet from? | The ISPs all hook up to each other. The smaller ISP pays the bigger ISPs. The list of these connections is public record- [here](_URL_0_) is the record for one of Comcast's networks. You can see that they're hooked up to CenturyLink (which used to be Qwest Communications), Verizon, T-Mobile (or at least their parent co... | [
"An Internet entrepreneur is an owner, founder or manager of an Internet based business. This list includes Internet company founders, and people brought on to companies for their entrepreneurship skills, not simply for their general business or accounting acumen, as is the case with some CEOs hired by companies st... |
Are Supermassive Blackholes eating galaxies orbiting them? | Not really. To address a common misconception, the supermassive black holes don't act like 'gravitational anchor' for the galaxy, much like how our sun dominates the solar system. Even though these black holes may be millions of times the mass of the sun, galaxies contain billions of stars. For perspective, the sun con... | [
"Radio observations and Hubble Space Telescope images of M84 have revealed two jets of matter shooting out from the galaxy's center as well as a disk of rapidly rotating gas and stars indicating the presence of a supermassive black hole. It also has a few young stars and star clusters, indicating star formation at ... |
When did it become standard practice for doctors/hospitals to keep detailed records of patients' medical history? | In medieval Europe, medical texts usually did not document patient information like we do today. They described diseases and treatments, but did not give patient examples for the most part. Henry VIII's physician kept very detailed records, though, although this was a little later when this was becoming more common. ... | [
"Medical records have been kept since humans began writing, as attested by ancient cave writings. Medical transcription as it is currently known has existed since the beginning of the 20th century, when standardization of medical data became critical to research. At that time, medical stenographers replaced physici... |
How high is Mars' Olympus Mons really? What's the reference point? | We're free to define sea-level (or 'zero-elevation datum') however we like. On Mars, we define it as *the equipotential surface whose average value at the equator is equal to the mean radius of the planet*. That basically means we calculate the average radius at the equator, the construct an imaginary sphere around the... | [
"Olympus Mons (; Latin for Mount Olympus) is a very large shield volcano on the planet Mars. The volcano has a height of nearly 22 km (13.6 mi or 72,000 ft) as measured by the Mars Orbiter Laser Altimeter (MOLA). Olympus Mons is about two and a half times Mount Everest's height above sea level. It is the largest vo... |
why do you have to use distilled water in your nose as opposed to regular tap or purified water? | Bc distilled water is cleaner/purer/safer. Think about it. Your stomach/digestive system is designed to take all sorts of drink and food, gastric acid is highly corrosive, there r bacteria in us to help break down n digest these foodstuff, all these systems r able to cope with foodstuff that may b less than pure. Our s... | [
"The water should not be tap water, which may contain small amounts of bacteria that are safe to drink but may be dangerous in the nose. The water should be sterile or filtered for micro-organisms; if tap water is used it should be boiled. Saline solution is also sometimes used.\n",
"Home aquarists typically use ... |
How are the images on the Voyager probe kept? | The so-called "Golden Record" included on the Voyager is pretty interesting in its own right. The record consisted of gold-plated copper, with a spiral array of grooves encoding all information. As such, the record was an early form of an analog video disk. The basic operation was fairly straightforward, you were suppo... | [
"Each Voyager space probe carries a gold-plated audio-visual disc in the event that either spacecraft is ever found by intelligent life-forms from other planetary systems. The discs carry photos of the Earth and its lifeforms, a range of scientific information, spoken greetings from the people (e.g. the Secretary-G... |
Meso-American and North American Pre-Columbian Relationship | [Mexico is part of North America](_URL_8_).
There's a huge swash of Mexico north of Mesoamerica, sometimes called "[Aridoamerica](_URL_1_)," that include indigenous groups such as the Huichol, Seri, and others. This region served as a bridge between the American Southwest ([Oasisamerica](_URL_7_)) and Mesoamerica and ... | [
"Central American Admixture began with the arrival of the Spaniards to Central America, whose consequences could still be perceived in the present-day Central American Society. Mestizos are the result of the admixture between Spaniards and Amerindians: Native Americans (or Amerindians)\n",
"Arnaiz-Villena also co... |
why is rubber "grippy"? | rubber's surface is very porous, making for a high coefficient of friction (aka it sticks to things) combine this with high flexibility meaning its surface is able to 'touch' many parts of the other object (aka the difference between how a soft pillow bends around your head vs a table that sits flat) and you have "grip... | [
"Rubber cements are solutions of synthetic or natural rubber products in solvents, with or without resins and gums. Vulcanizers, accelerators, and stabilizers are considered problematic due to the nature of their compounds. One example is the additive of sulfur which is harmful to some types of material, including ... |
Do "new" stars appear in the sky as the light from distant stars reaches us? | The total number of stars we can observe in principle goes up as we can observe more and more distant stars in an older universe. The expanding universe makes these stars appear dimmer, but that is just a limit of our telescopes.
> And if "new" stars are "appearing" in the sky, would the night sky eventually be extr... | [
"Stars twinkle for the same reason. They are so far from Earth that they appear as point sources of light easily disturbed by Earth's atmospheric turbulence which acts like lenses and prisms diverting the light's path. Viewed toward the collimated light of a star, the shadows bands from atmospheric refraction pass ... |
jesus and his disciples being devout jews | Jesus was born and raised a Jew, and advocated religious reform of Judaism.
His original followers, the Jewish Christians (Judeo-Christians) still believed in the same theology on a basic level but also the teachings of Jesus Christ. Meaning there were several differences but ultimately they had the same religion.
It'... | [
"Many Jews view Jesus as one in a long list of failed Jewish claimants to be the Messiah, none of whom fulfilled the tests of a prophet specified in the Law of Moses. Others see Jesus as a teacher who worked with the gentiles and ascribe the messianic claims that Jews find objectionable to his later followers. Beca... |
if depression is caused by a chemical imbalance in the brain, why is depression so commonly associated with unfortunate life circumstances i.e. loss of a loved one, unemployment etc? | Maybe because those unfortunate events cause a chemical imbalance in the brain? | [
"The original monoamine hypothesis postulates that depression is caused by a deficiency or imbalances in the monoamine neurotransmitters (5-HT, NE, and DA). This has been the central topic of depression research for approximately the last 50 years; it has since evolved into the notion that depression arises through... |
how do steroid creams help with eczema and how do they "thin the skin"? | From what I understand, eczema is an immune response. Steroids weaken the immune response, therefore can be used to treat eczema. I've never heard about it thinning skin though. | [
"When the extra steroid component is added (as in Calmurid HC), it is used to treat dry, scaly skin that is accompanied by inflammation of the skin. This may include various forms of eczema. The presence of a corticosteroid, however, means that the cream should be used only sparingly and only for the shortest time ... |
Is the bible the same for each branch of the church? | I take it that you mean you would read the Bible in English and understand that there are many different translations which attempt to be consistent with the original language.
There is always room for newer and better answers but you may be interested in an earlier similar question/thread here.
_URL_0_
Briefly, ... | [
"According to the branch theory there are currently branches of the one Church of Christ, each holding the faith of the original undivided Church and maintaining the Apostolic Succession of its bishops. While some limit this to three branches, Roman Catholic, Eastern Orthodox and Anglican Communion churches, others... |
Why in some religious paintings , characters have a certain hand position ? | I remembered this posted to /r/Christianity yesterday _URL_0_ :) | [
"Hands play a special significance in van Eyck's paintings and at least one is prominently held up. In his early portraits the sitters are often shown holding objects indicative of their profession. The man in \"Léal Souvenir\" may have been a legal professional as he holds a scroll resembling a legal document.\n",... |
why do people suffocate near the top of mt. everest where the air is thinner, if you're filling your lungs with air regardless of the thickness of the atmosphere? | The human lungs are about 6 liters in volume. The pressure at the top of Mt Everest (4.89 psi) is about a 1/3 of the pressure at isea level (14.7 psi).
If the volume is the same, but the pressure is a 1/3, that means there is 1/3 as many air molecules in your breath.
The reason you are suffocating is because each bre... | [
"The top of Everest is nearly 9000 m above sea level. The peak was officially recognized in 2010 to be at an elevation of with the usual presence of snow and ice. Above about , which is approaching the cruising altitude of pressurized commercial jetliners, the air pressure is so low that the amount of available oxy... |
Why can't we use the sun as the X-ray source for medical imaging? | The upper atmosphere filters out x-rays from the sun. You can see a [solar irradiance spectrum](_URL_1_) for yourself, and remember that [x-ray astronomy](_URL_0_) involves getting your detector far enough up above the atmosphere to detect x-rays from celestial bodies. | [
"X-rays are also totally absorbed by the thickness of the earth's atmosphere, resulting in the prevention of the X-ray output of the sun, smaller in quantity than that of UV but nonetheless powerful, from reaching the surface.\n",
"The first X-ray telescope in astronomy was used to observe the Sun. The first X-ra... |
Why don't we have plagues of locusts anymore the way we did in the late 1870s? | [Interesting article](_URL_0_) on the status of *M. spretus* (the Rocky Mountain locust), with the possibility that it still exists, somewhere.
> Over the past century, this disappearance has baffled entomologists and ecologists. The collapse came, after all, before the advent of synthetic insecticides, such as DDT,... | [
"During the last two millennia, locust plagues continued to appear at irregular intervals with the main recorded outbreaks of the desert and migratory locusts occurring in Africa, the Middle East, and Europe. Other species of locusts caused havoc in North and South America, Asia, and Australasia; 173 outbreaks over... |
why doesn't california just build more highways? | You can't just... build a highway in the middle of the city. There's stuff around. | [
"A regularly recurring issue in California politics is whether the state should continue to aggressively expand its freeway network or concentrate on improving mass transit networks in urban areas. BART, LA Metro Rail, and several other public transportation systems have expansion plans either currently under const... |
what does it mean for this blob organism to have 720 different sexes? | If I'm not mistaken it means that it has 720 variations of it's sex chromosomes unlike humans which have 2.
For example humans primarily have XX and XY. This organism could have many different variations than that. | [
"BULLET::::- Polygynandry: Polygynandry is a slight variation of this, where two or more males have an exclusive relationship with two or more females; the numbers of males and females don't have to be equal, and in vertebrate species studied so far, the number of males is usually less. This is associated with mult... |
why happens when i vicariously feel pain when i see/hear someone get hurt? does this have an evolutionary purpose? | When I was a boy scout, my Mammal Studies teacher taught me that all life boils down to two directives.
1. Don't die.
2. Make babies.
To be more scientific, evolution gives us natural dispensations towards continuing the human race. When a mother sees a child hurt, she feels the pain and wants to help the child, ... | [
"A related argument revolves around non-human organisms' ability to feel pain. If animals could be shown to suffer, as humans do, then many of the arguments against human suffering could be extended to animals. One such reaction is transmarginal inhibition, a phenomenon observed in humans and some animals akin to m... |
google reader (or rss feeds in general) | Oh, hello, five-year-old that knows how to use reddit. Do you like water? Me too! Some people like water so much they go to different places to pick up water each day, and the stores sell different pieces of water each day. Different stores sell different colors of water, so people will drive by each store and pick up ... | [
"Google Reader was an RSS/Atom feed aggregator operated by Google. It was created in early 2005 by Google engineer Chris Wetherell and launched on October 7, 2005, through Google Labs. Google Reader grew in popularity to support a number of programs which used it as a platform for serving news and information to pe... |
how does a life support system specifically exchange carbon dioxide into oxygen/hydrogen? (on a space station or shuttle, i.e. iss) | CO2 is removed using molecular filters. "Dirty" air is passed through silica gel to remove the moisture, then passed through a molecular filter (zeolite - an aluminum-silicon-oxygen mixture) that lets the smaller oxygen and nitrogen molecules pass, but blocks the CO2. The CO2 is then vented overboard.
Oxygen is deri... | [
"The International Space Station Environmental Control and Life Support System (ECLSS) is a life support system that provides or controls atmospheric pressure, fire detection and suppression, oxygen levels, waste management and water supply. The highest priority for the ECLSS is the ISS atmosphere, but the system a... |
why does attraction sometimes suddenly fade? | I’m a cis guy, and I have experienced this at least once. For me, as I got to know this person, I started to realize that we were incompatible housemates. I still love her very much, and I enjoy time and intimacy with her, but I do not feel aroused (often) by, or attracted to her. There are occasions when I do feel an ... | [
"Aronson published a paper in 1966 where he described an experiment testing the effects of a simple blunder on perceived attraction. The so-called Pratfall effect is the tendency for attractiveness to increase or decrease after an individual makes a mistake, depending on the individual's perceived competence, or ab... |
patriotism, what is it, why does it exist, how does one be/become/remain patriotic? | It's a sense of pride and for your country and the willingness to take steps to either defend or support your country. It should be an easy concept to understand really. If you believe in what your country stands for and does then why not support it? Also you have to imagine that many people were born and raised in the... | [
"Patriotism or national pride is the feeling of love, devotion and sense of attachment to a homeland and alliance with other citizens who share the same sentiment. This attachment can be a combination of many different feelings relating to one's own homeland, including ethnic, cultural, political or historical aspe... |
The United States during the First Red Scare - how did officials respond to the rise of anarchist, socialist, and otherwise "un-American" opinions stateside? | The conflict between the state and the working class during the first Red Scare see's its origins in the six thousand labor strikes that struck the nation during World War I. Officials,such as Attorney General A. Mitchell Palmer, begin a complete crusade against any suspicious left wingers in the nation. Tensions were ... | [
"The First Red Scare's immediate cause was the increase in subversive actions (both real and imagined) of foreign and leftist elements in the United States, especially militant followers of Luigi Galleani, and in the attempts of the U.S. government to quell protest and gain favorable public views of America's enter... |
how does a zit/pimple go away naturally? | Macrophages!! Tiny little cells that clean up cellular debris. They eat all sorts of crap. Scabs, dead bacteria, the list goes on. | [
"As sprouts extend toward the source of the angiogenic stimulus, endothelial cells migrate in tandem, using adhesion molecules called integrins. These sprouts then form loops to become a full-fledged vessel lumen as cells migrate to the site of angiogenesis. Sprouting occurs at a rate of several millimeters per day... |
Why is the lack photons black? | Black is simply the colour you perceive when your brain receives no stimulation from your retina. A lack of photons will make you perceive black. | [
"Photons are part of family of particles known as bosons, particles that follow Bose–Einstein statistics and with integer spin. A gas of bosons with only one type of particle is uniquely described by three state functions such as the temperature, volume, and the number of particles. However, for a black body, the e... |
Before the Ivy League was established in 1954, were those specific eight schools considered to be a special, unique group, or is that perception mainly a growth of the conference membership? | This isn't exactly an answer, but it gets at some of what you ask. The current Ivy League is related to the older concept of the Colonial Colleges. There were 9, all founded before the American Revolution. These include every current Ivy except Cornell (founded in the 19th century) as well as two non-Ivies (William & ... | [
"Before the formal establishment of the Ivy League, there was an \"unwritten and unspoken agreement among certain Eastern colleges on athletic relations\". The earliest reference to the \"Ivy colleges\" came in 1933, when Stanley Woodward of the New York Herald Tribune used it to refer to the eight current members ... |
what benefits are there to dilluting us federal power and emplowering us state governments? | Use recreational marijuana legalization as an example.
You're starting out with zero states that have legalized marijuana for medial OR recreational use. It will take a LOT of public pressure to overturn this at the federal level - not just from more liberal states, but also conservative states.
There's a lot of ques... | [
"If a state government betrays the people and usurps power, the local governments will not have the power or capability to respond to it. However, the more the people understand their rights and want to defend those rights, the harder it will be for state governments to usurp power and betray the people. If state g... |
If we quantum entangled two particles, sent one into a black hole and kept one on Earth, what would happen? | You can't get any information out of entanglement. The person not in the black hole would still just observe a random outcome of the experiment. | [
"This problem was solved when the idea of pairs of \"virtual particles\" was thought of. One of the pair of particles would fall into the black hole, and the other would escape. This would look like the black hole was emitting particles. This idea seemed strange at first, but many people accepted it after a while.\... |
Can a tidal locked planet and a normal rotating planet exsist in the same solar system at roughly the same distance from the sun? | By a technicality, no. A planet, by IAU definition, must have cleared out it's orbit of bodies of a similar size. One of the two wouldn't be a planet by definition.
Silly pedantry aside, I think you could, though the dynamics of the system is not exactly conducive to them remaining at the same distance for long. It ki... | [
"Being tidally locked to a giant planet or sub-brown dwarf would allow for more moderate climates on a moon than there would be if the moon were a similar-sized planet orbiting in locked rotation in the habitable zone of the star. This is especially true of red dwarf systems, where comparatively high gravitational ... |
how do companies go public? | The biggest driver behind going public is the need for funding. At some point, a company may not be able to fund their growth with their existing financing (investors, bank debt) or, more importantly, it's too expensive. That's when management and the board of directors explore going public. To do this, they seek the h... | [
"A public company is incorporated by one or more persons associated for a lawful purpose. It may raise capital from the general public, and its shareholders enjoy free transferability of shares and interests in the company. There is a compulsory regime of disclosure for public companies.\n",
"BULLET::::4. \"Going... |
can you swim after you eat? | It's perfectly safe. Your body won't go, "Sorry arms and legs, it's digestion time," and redirect blood to your intestines. That's bulldust. | [
"BULLET::::- Eating less than an hour before swimming does not increase the risk of experiencing muscle cramps or drowning. One study shows a correlation between alcohol consumption and drowning, but there is no evidence cited regarding the consumption of food or stomach cramps.\n",
"Children aged 3 years are tau... |
can nuclear bombs and or missles be dismantled? | [Yes they can](_URL_0_). It has been something advocated for decades by various groups and accelerated after the end of the cold war. | [
"Five of the six nuclear bombs have been successfully installed, but during the installation of the sixth, an earthquake occurs, and a warhead is lost. Nolan tries to set it manually, but is pinned by the warhead.\n",
"Nuclear reactors that are intended to be sold to countries that otherwise do not possess nuclea... |
the difference between private healthcare and public healthcare | I'm not 100% on the Australian system, but this should basically explain it:
Public healthcare is a hospital. Lots of different patients, many doctors and nurses. Partially paid for by the government.
Private healthcare is a called a practice. It's a lot smaller, and often targets one specific type of patient, e.g. t... | [
"Ethical issues relating to private healthcare primarily concerns the argument that the seriously ill be entitled to spend money on saving their lives. On the other hand, private healthcare can sometimes be more efficient than public sector provision. Private operators may be more innovative in areas such as teleme... |
As a rule, do languages simplify their grammatical features over time? | You might get better answers to this question over at /r/linguistics | [
"Grammars evolve through usage and also due to separations of the human population. With the advent of written representations, formal rules about language usage tend to appear also. Formal grammars are codifications of usage that are developed by repeated documentation over time, and by observation as well. As the... |
how are the tiles on the bottom of the space shuttle able to resist so much heat? i cannot seem to get a clear answer. | The tiles and other insulation are made of materials that are not good conductors of heat.
_URL_0_
| [
"Typical Space Shuttle TPS tiles (LI-900) have remarkable thermal protection properties. An LI-900 tile exposed to a temperature of 1,000 K on one side will remain merely warm to the touch on the other side. However, they are relatively brittle and break easily, and cannot survive in-flight rain.\n",
"\"A space s... |
Is there paleoanthropological evidence for endurance hunting in early humans? | By comparing early Homo fossils to ancient extinct bipedal fossils, we can identify structures that support the [endurance running hypothesis](_URL_0_), which I'll now sum up.
The nuchal ligament is a structure that helps to stabilize the head, especially while running. There is no evidence of the presence of this lig... | [
"According to the endurance running hypothesis, long distance running has been suggested to have played a significant role in the lifestyle and evolution of early hominins. Before developing more advanced hunting tools such as the bow and arrow, are thought to have used endurance running for scavenging and hunting.... |
why is it that some animals cannot be domesticated? if canines are/were vicious predators why cant other animals, such as tigers, too be domesticated? | It's not impossible to domesticate wild animals like tigers or bears. Though complete obedience can't be guaranteed it's certainly possible to make them docile and have them perform tricks or whatever if you're so inclined.
The thing is, a domestic tiger or bear is just not as useful as a dog or cat. It takes way too ... | [
"Wild dogs are fairly large predators, but are much smaller than able-bodied adults and therefore not generally much of a threat to them. However, they can be a serious threat to incapacitated, isolated, outnumbered, or very small humans, especially infants and young children.\n",
"Feral dogs differ from other do... |
why can a baker keep their breads out to exposed air and still be 'fresh' where i take it home and leave it out the bag for an hour and it's rock hard? | I worked in a bread bakery for 6+ years and have no idea what you're talking about. Our bread would be baked from approx. midnight until 8 am or so and a loaf that came out at 2 in the morning would still be tasty at 6pm. I've never seen a loaf get "rock hard"; if anything they tend to get softer at first. We donated a... | [
"According to Australian food rescue pioneer OzHarvest, \"Bread is the cheapest commodity, it's so easy to keep churning out. For bakeries, if they want to make their shelves look full they have to keep making it\".\n",
"Bread bags for some bread often have micro-perforations in the plastic, which is supposed to ... |
what is an "agile" environment? | Agile can be summarised very briefly:
* Only work on the most important things at any given point in time
* Break those things into small bite-sized tasks for individuals to work on autonymously
* Catch up for about 10-20 minutes every morning on progress
* Meet at the end of a set of 'things' to plan the next set of... | [
"\"Forrester Research defines agile BI as an approach that combines processes, methodologies, tools and technologies, while incorporating organizational structure, in order to help strategic, tactical and operational decision-makers be more flexible and more responsive to ever-changing business and regulatory requi... |
I've heard it said that your ears, nose, and head continue to grow throughout your life. Do they all grow at the same approximate rate across all people? It seems like some people's features become bigger relative to others. | This perception occurs of the elderly due to degeneration of muscle mass and fat depletion, overall, but in the head/face. One's nose and ears, have little fat/musculature and this atrophy less and subsequently appears larger. The rate and degree of atrophy also lends itself to the differences you note | [
"A Norwegian study found that height gains were strongly correlated with intelligence gains until the cessation of height gains in military conscript cohorts towards the end of the 1980s. Both height and skull size increases probably result from a combination of phenotypic plasticity and genetic selection over this... |
Celiac Disease in History? | Celiac disease was identified by (and its discovery is attributed to) Aretaeus of Cappadocia in the 1st century AD. He was an impressive diagnostician, working chiefly from observation, rather than via experimentation. He supposedly determined the sweetness of urine in people with diabetes mellitus ('mellitus' meanin... | [
"Coeliac disease (American English: celiac) (CD) is a chronic, immune-mediated, and mainly intestinal process, caused by the ingestion of wheat, barley, rye and derivatives, that appears in genetically predisposed people of all ages. CD is not only a gastrointestinal disease, because it may affect several organs an... |
can someone honestly explain how a war with two countries with nuclear capabilities could ever be conducted? | There are many different policies for the usage of nuclear weapons, and most countries have numerous different attack plans within those policies, so there's a lot of possible variation. It's very difficult to say how any war would go without actually having it happen.
The best way a nuclear war could go, and arguably... | [
"Thus, no two nuclear powers have yet fought a conventional war directly, with the exception of two brief skirmishes between, China and Russia in the 1969 Sino-Soviet conflict and between India and Pakistan in the 1999 Kargil War.\n",
"Nuclear war is a type of warfare which relies on nuclear weapons. There are tw... |
How did Tesla's tower work? | It wasn't meant as a power generator.
[Check this out](_URL_0_) | [
"There was a great deal of construction under the tower to establish some form of ground connection but Tesla and his workers kept the public and the press away from the project so little is known. The descriptions (some from Tesla's 1923 testimony in foreclosure proceedings on the property) include that the facili... |
Scotland and the Stuart Dynasty | Pretty sure Charles Edward Stuart just faded into obscurity and became some irrelevant French aristocrat who tried to make a name for himself in politics but ultimately failed.
The modern heir to the Stuart throne is Franz, Duke of Bavaria, it’s just a given that there is no way they could ever take control of Scotlan... | [
"The House of Stuart was a European royal house that originated in Scotland. Nine Stuart monarchs ruled Scotland alone from 1371 until 1603. The last of these, King James VI of Scotland became King James I of England and Ireland after the death of Elizabeth I in the Union of the Crowns. The Stuarts ruled the United... |
How realistic is the depiction of Soviet soldiers lacking weapons and ammo at the Battle of Stalingrad? | You are referring to a scene from Enemy at the Gates, where fresh troops being sent to Stalingrad are only issued arms as they disembark.
Fact. In 1942 alone, the Izveshk and Tula arsenals produced over 3,000,000 Model 1891/30 pattern Mosin Nagant rifles. They produced another nearly 2 million in 1943. (_URL_0_). An... | [
"BULLET::::- \"Stalingrad\" (2013), a Russian film that tells the story of six Soviet reconnaissance troops and their part in the battle, holding a building along with various units to defend Stalingrad and Volga River from German attacks\n",
"Russian military historian Grigoriy Krivosheyev, who based his figures... |
Is a human bite really worse than a dog bite? | That's a bit too large as a question, but I'll try to help a bit. Assuming the dog and the human biting do not have any unusual circumstances (eg. mouth infections, particularly bad hygiene, rotting food on the teeth, etc.) or pathologies (eg. Rabies, HIV, HBC, skin diseases, immunocompromised person, unvaccinated, etc... | [
"Bite injuries are often the consequences of an animal attack, including those instances when a human attacks another human. Human bites are the third most frequent type of bite after dog and cat bites. Dog bites are commonplace, with children the most commonly bitten and the face the most common target. In 1936, a... |
In terms of the frontiers, did the early Roman emperors have any policies regarding them? | Not quite qualified to discuss any economic policy that may have resulted in stabilization, I can still offer a view on how some of the actions of the Julio Claudians, specifically Augustus, helped in cementing a secure frontier. The Romans primarily had 3 borders by the time of Augustus, the Britain front which is enc... | [
"The Roman Empire had reached its greatest extent under the Emperor Trajan. However, before Trajan, the Emperor Augustus set about stabilizing the frontiers of the Empire. As a result, the Romans were more interested in simply defending their territory and consolidating the Empire rather than in attempting to conqu... |
if commodity prices are at a historic low, why do the costs of everyday goods seem unchanged? | In general, you are more upset by prices rising than you are happy by prices falling. Because of this, supermarkets do their best to keep prices as stable as possible, keeping sales inflated when prices are down and cheaper than expected when prices are high, (profiting more when commodities are cheap, and less when t... | [
"The price of a commodity good is typically determined as a function of its market as a whole: well-established physical commodities have actively traded spot and derivative markets. The wide availability of commodities typically leads to smaller profit margins and diminishes the importance of factors (such as bran... |
how is it legal for automotive manufacturers to put a huge paragraph in the smallest font on their commercials, and expect someone to read it all in 5 seconds? | They "provide" the information. It is not their job to make sure you can read it, but to provide you the chance to read it. | [
"There are various ad sizes available for content ads. The ads can be simple text, image, animated image, flash video, video, or rich media ads. At most ad sizes, users can change whether to show both text and multimedia ads or just one of them. , a grey arrow appears beneath AdSense text ads for easier identificat... |
how does a background investigation to get a job work? | Oohh! I did this for a living!
I did background checks on chemists, armored car drivers, etc.
You fill out your application including work history or include your resume. Your prospective employer then sends it to me. They can get everything including credit check, criminal background, past employment history (most... | [
"A background check or background investigation is the process of looking up and compiling employment history, criminal records, commercial records, and financial records of an individual or an organization. The frequency, purpose, and legitimacy of background checks varies between countries, industries, and indivi... |
Do the reflected rays of the moon give off significant heat? | No, not significantly. The brightness of the moon is 400,000 times less than that from the sun, which isn't enough to impact weather even so slight. Furthermore, it's not the heat (infrared) radiation that warms earth so strongly, but the visible and UV light that gets absorbed at the ground. The earth's atmosphere ref... | [
"The study of Alfvén waves began from the coronal heating problem, a longstanding question in heliophysics. It was unclear as to why the temperature of the sun's corona is hot (about one million degrees Kelvin) compared to its surface (i.e. the photosphere), which is only a few thousand degrees. Intuitively, it wou... |
if a human barks at a dog, can they tell the difference from a real bark? what would they think the human is saying to them? | When you scream in pain or fear, what are you saying? | [
"Stanley Coren identifies 56 signals which untrained dogs make and people can understand, including 10 barks, 5 growls, 8 other vocalizations, 11 tail signals, 5 ear and eye positions, 5 mouth signals and 12 body positions. Faragó et al. describe research that humans can accurately categorize barks from unseen dogs... |
If chips are square why are they produced in circular discs? | Silicon crystals are produced in a process where they are continuously rotated and grow outward radially. It produces ingots like [this](_URL_0_), which are then sawed into the circular disks. As far as I know there is no process for growing similar quality crystals with a square cross section. | [
"A doughnut, or donut, is a thin metal or cardboard panel, similar in shape and appearance to a colour frame, but with a small diameter hole intended to reduce off-axis rays of light being projected from a fixture. This increases sharpness of the light by reducing the effect of imperfect lenses. Doughnuts are desig... |
If a beating heart is removed from a living body, will it continue to beat? If so, for how long? | Yes it will continue to beat. How long depends on how the heart is treated. If you just leave it on the table it will stop beating very quickly. If you perfuse the heart with a heavily oxygenated buffer heated at body temperature containing the metabolic substrates required to make ATP, the heat can be made to keep bea... | [
"Another noteworthy transient condition is livor mortis, the purplish pooling of blood within the body after the heart has stopped beating. Emergency responders are instructed to recognize it as a sign that CPR should not be attempted. Investigators may use it to determine if a body has been moved or repositioned a... |
how donations fund and help "research." | Equipment, salaries, the overall operation, and usually, the bureaucracy. | [
"Garnering funds in the form of donations has always been a major focus for university leaders. These donations are usually found in the form of large annual gifts by alumni and friends of universities, along with funding from government entities for public universities. More recently, universities have been taking... |
How did the US manage to get the USSR settle for no territorial concessions from the Japanese after the end of WWII? | Well they didn't. The Soviets occupied the southern half of Sakhalin Island and the Kuril Islands, which had been under Japanese control, and is still somewhat disputed today (though Japanese claims to Sakhalin and most of the Kurils are largely resolved).
Aside from that, keep in mind that the Chinese communists were... | [
"This is a list of regions occupied or annexed by the Empire of Japan until 1945, the year of the end of World War II in Asia, after the surrender of Japan. Control over all territories except the Japanese mainland (Hokkaido, Honshu, Kyushu, Shikoku, and some 6,000 small surrounding islands) was renounced by Japan ... |
If you give somebody mouth to mouth breaths, aren't you ventilating them with a high percentage of CO2? | Yes, but not by much. CO2 concentration is normal air is about 0.04% CO2, which is close enough for this problem to call 0%. In exhaled air, that has changed to about 5%. This doesn't really matter much. Much more, and certainly greater than 10% CO2 can cause some strange effects because it begins to acidify the blood,... | [
"A high ventilation rate is usually necessary to eliminate the metabolic product carbon dioxide (CO). The breathing reflex is triggered by CO concentration in the blood, not by the oxygen concentration, so even a small buildup of CO in the inhaled gas quickly becomes intolerable; if a person tries to directly rebre... |
Escape a black hole? | There's no inconsistency here. Remember that by "path" we mean a path through space*time*, not just through space, so we're talking about a collection of points in space, each corresponding to some particular time. Every object travels on some path through spacetime, even an object at rest - its spacetime path just loo... | [
"A black hole is a region of spacetime exhibiting gravitational acceleration so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of t... |
Stepping down AC voltage and converting to DC comes with losses. LED light bulbs get pretty hot. Are they really saving energy? | Yes, LED lightbulbs can use as little as 1/5 the electricity of an incandescent bulb. (12W LED is roughly equivalent to a 60W incandescent). The efficiency of lightbulbs is called "luminous efficacy", and LEDs have an efficacy of 8-20%, while incandescent bulbs are rated 1-2%. Anecdotally, my LED bulbs definitely get w... | [
"Drawbacks include high weight, a slightly larger-than-normal base and – as with compact fluorescent lamps – when switched on, a slight delay before illumination begins and a static charge which attracts dust to the bulb face. As of 2016 the cost is higher and claimed efficiency is less than half that of commercial... |
what are the advantages/disadvantages to a high displacement four cylinder compared to a low displacement six cylinder? | You forgot a large detail in your comparison. The Audi B5 S4's engine is turbocharged. The V6 configuration saves some space which was used for a turbocharger to increase power output.
A 2.6L turbocharged engine can produce a larger power output than a 2.5L non turbocharged engine while keeping the consumption simil... | [
"Six-cylinder designs are also more suitable for larger displacement engines than four-cylinder ones because power strokes of pistons overlap. In a four-cylinder engine, only one piston is on a power stroke at any given time. Each piston comes to a complete stop and reverses direction before the next one starts its... |
drop shipping. | I work for a pet food company. To us, drop shipping means instead of shipping to the customer,we set it to be held at the nearest warehouse and a local sales rep picks up the product, or the customer picks it up themselves. Not sure if that's what you meant.. | [
"Drop shipping can occur when a small retailer (that typically sells in small quantities to the general public) receives a single large order for a product. The retailer may arrange for the goods to be shipped directly to the customer from the manufacturer or distributor. Drop shipping is common with expensive prod... |
how is a computer programmed to *not* play a game optimally? (chess, for example) | Many programs work by searching through thousands or even millions of possible moves. Not just what move is next, but what will happen after that, and what will happen after that. When you reduce the computer's level, you tell it to examine fewer possible moves, less far into the future, before making its decision. | [
"Most machines are designed to defeat this by generating numbers even when the machine is not being played, so the player cannot tell where in the sequence they are, even if they know how the machine was programmed.\n",
"Given that the endgame contains fewer possible moves than the opening (\"fuseki\") or middle ... |
Does love have the same chemical effect in man and woman? | Though it's a huge simplification to say that 'romance' is triggered by one single physiological agent, oxytocin is one of the hormones which are generaly related to things like love and romance. Turn out that estrogen regulates oxytocin activity. Since females have higher titres of estrogen, this 'love'-signal is diff... | [
"The theory of a biological basis of love has been explored by such biological sciences as evolutionary psychology, evolutionary biology, anthropology and neuroscience. Specific chemical substances such as oxytocin are studied in the context of their roles in producing human experiences and behaviors that are assoc... |
Have their been any studies to investigate how the invention of artificial lighting has changed the behavior of insects at night and what the effects, if any, might have been? | Yes, many studies have been conducted to study the effect of artificial light on insects. The most commonly used explanation for why insects are attracted to light is the following: The night is often not fully dark; there is the light of the moon and very bright stars. Insects can perceive this light and use it to nav... | [
"The attraction of insects to artificial light is one of the most well known examples of the effect of light at night on organisms. When insects are attracted to lamps they can be killed by exhaustion or contact with the lamp itself, and they are also vulnerable to predators like bats.\n",
"In June 2018, the \"Le... |
Was the creation of the Mormon church part of a larger pattern that took place in America as it went through the Second Great awakening, or was it extremely different than other newer branches of Christianity at the time? | Please forgive me if I don't quite answer what you're asking. I may be misunderstanding.
The short answer to your question is "yes and yes." The LDS Church didn't suddenly come into being in a vacuum. Its converts brought what they already knew with them and Mormonism was shaped by the world it was born in, but it is ... | [
"During the Second Great Awakening, new Protestant denominations emerged such as Adventism, the Restoration Movement, and groups such as Jehovah's Witnesses and Mormonism. While the First Great Awakening was centered on reviving the spirituality of established congregations, the Second focused on the unchurched and... |
why does a game like gta5 have to have "fake" cars (like a fake audi r8 or bugatti) but other games, like forza or need for speed, can use the real logos and looks of real cars and car brands? | Licensing, you have to pay to use real brands. | [
"The cars in the game are all fictitious look-alikes of real vehicles. Examples are the \"Ninja\", a vehicle resembling a Honda Civic hatchback but bearing resemblance to other hatchbacks, and the \"Badge\", which mimics the Dodge Charger.\n",
"The game features a number of licensed vehicles from real automobile ... |
At the end of the 80s, the 'Ndrangheta was a fairly minor force in Italian crime. By the end of the 90s, it was a major player. How did this happen? | Not sure if this fits or not, but for a variety of reasons (partly due to lack of interest, complete secrecy on part of the organisation and the translation involved) there are very few English language books on this specific subject.
Even in the original Italian, the nature of 'ndrangheta is so disparate and disjoi... | [
"Until 1975, the 'Ndrangheta restricted their Italian operations to Calabria, mainly involved in extortion and blackmailing. Their involvement in cigarette contraband expanded their scope and contacts with the Sicilian Mafia and the Neapolitan Camorra. With the arrival of large public works in Calabria, skimming of... |
how do pilots who speak different languages communicate with each other / air traffic control? | All pilots are required to know how to speak English, as are the people in the control tower.
That way, everybody has a language they can all communicate in. | [
"The standard method of communication between an air traffic controller and a pilot is voice radio, using either VHF bands for line-of-sight communication or HF bands for long-distance communication (such as that provided by Shanwick Oceanic Control).\n",
"In the current United States National Airspace System, al... |
Can Cartilage regenerate naturally or with supplementation? | Cartilage is barely alive. It is one of the few tissues without blood vessels running through it. There are living cells in there - chondrocytes, and a handful of immune cells - but they are basically buried alive in collagen and ECM. Diffusion of oxygen and nutrients through cartilage is not fast.
Maintenance and rep... | [
"There are many existing methods concerning regenerative therapies of cartilage as well as developing new artificial cartilage. First, regenerative therapies for osteoarthritis will be discussed. There have been substantial advances in recent years in the development of these regenerative therapies. These include a... |
what would happen if you took several months of birth control at once? | It wouldn't be fatal, the body can handle sudden increases in these kinds of chemicals sense it makes and expects to dispose of it often. You could expect strange things to occur though, your stomach won't appreciate it one bit and it's likely you would puke most of it out. It's unlikely but it can cause an extreme pan... | [
"While all methods of birth control have some potential adverse effects, the risk is less than that of pregnancy. After stopping or removing many methods of birth control, including oral contraceptives, IUDs, implants and injections, the rate of pregnancy during the subsequent year is the same as for those who used... |
entitlement as commonly used today | People often call someone entitled if their privileges/etc. prevent them from seeing the struggle of others and/or cause them to refuse to sympathize. It's basically being a jerk about how good you have it.
At least, that's how I've seen it used in a social rhetoric context. | [
"An entitlement is a provision made in accordance with a legal framework of a society. Typically, entitlements are based on concepts of principle (\"rights\") which are themselves based in concepts of social equality or enfranchisement. In recent decades the meaning of the word has been extended to encompass inform... |
what would america be like if we were/remained isolationist? | I think that if we isolated our military to just defending our land and trade transport we would be much better off. The military could still employee large numbers teaching them the beneficial skill sets and helping people advance their lives without sending them off to foreign lands to war and occupy.
If this cause... | [
"BULLET::::- Former U.S. Secretary of State Frank B. Kellogg told a luncheon audience in Chicago that American isolationism was no longer viable. \"A great nation like ours, with ten billions a year of foreign commerce, has as much to gain by the establishment of the World Court as any country in the world\", he sa... |
Food preservation | ok, about bread. real bread, made with sourdough will be relatively fresh for very long time. that type of bread, stored in good condition will not have mold for long time.
cakes - it depend's on type of cake. some of them are good after a week, for example: [cheesecake made with quark, if it's stored in cooler place]... | [
"Preserving and storing foods reduces reliance on long-distance transported food and the market industry. Home-grown foods can be preserved and stored outside of their growing season and continually consumed throughout the year, enhancing self-sufficiency and independence from the supermarket. Food can be preserved... |
what would happen if leap day didn't exist? | The seasons would slowly shift around. If there wasn't a leap year, today would have been March 2nd - the calendar would be off by one day. In 4 years, the calendar would be off by 2 days. In 120 years the calendar would be off by a whole month - so for example instead of winter being from December to February, it woul... | [
"A leap day is observed because the Earth's period of orbital revolution around the Sun takes approximately 6 hours longer than 365 whole days. A leap day compensates for this lag, realigning the calendar with the Earth's position in the Solar System; otherwise, seasons would occur later than intended in the calend... |
i recently learned about 8k displays. does science know of a specific goalpost where the human eye won't be able to see a difference in quality anymore? (more pixels) | It changes with distance and screen size. There are many charts, for those with 20/20 vision. I like this version of [the chart](_URL_0_), because it shows the screen size/distance relationship for several resolutions. It doesn't include a line for 8k, but you can probably make a reasonably good estimate given the a... | [
"Calculating the point where the human eye can detect pixels is not straightforward. Obviously, people's visual acuity varies greatly. But pixel geometry varies as well, in shape and spacing (known as \"interpixel gap\"), depending on a display's technology and design.\n",
"The human eye can perceive scenes with ... |
Has there been cities or nations which have been totally destroyed in war within the timeframe of written history? | I can think of two famous ones off the top of my head: Carthage, and Thebes.
I'll leave the Roman destruction of Carthage to others - here's an overview of Alexander the Great's destruction of Thebes:
Early in his reign, Alexander was quite keen to head east and invade the Persian Empire - but he knew that he needed ... | [
"Ancient cities were often highly militarized and fortified defensive settlements. In times of war they were the central focus of armed conflict and would be sacked and ruined in defeat. Although less central to modern conflict, vast areas of 20th-century cities such as Warsaw, Dresden, Coventry, Stalingrad, Königs... |
Movies/tv shows/games have a recurring trope where ancient tombs feature elaborate booby traps, complicated mechanical doors, levers, hidden rooms, etc. It’s got me wondering— are there historically any real life ancient temples/tombs which featured such amazing feats of engineering? | Not to prevent other answers, but you might want to check out these responses compiled for a similar question by a mod:
* [Is there any history basis for the traps in tombs you see in Indiana Jones, Tomb Raider, etc.?](_URL_6_) \- Egypt, China (Qin Shi Huang), Jordan
* [How historically accurate are the traps, levers,... | [
"In Etruscan tombs the false door has a Doric design and is always depicted closed. Most often it is painted, but on some occasions it is carved in relief, like in the Tomb of the Charontes at Tarquinia. Unlike the false door in ancient Egyptian tombs, the Etruscan false door has given rise to a diversity of interp... |
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