If weight is the measured effect of gravity on an object, and gravity is stronger the closer to the object’s center of mass the measuring object is, do objects high in the atmosphere weigh less than those on the ground, from a physics standpoint?

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• If weight is the measured effect of gravity on an object, and gravity is stronger the closer to the object’s center of mass the measuring object is, do objects high in the atmosphere weigh less than those on the ground, from a physics standpoint?
• Does modern sedentary lifestyle contribute to the rising amount of depression?
• How does our body heat itself up so significantly when it's sick?
• Are negative mass and anti matter the same thing?
• When did we know that birds are descended from dinosaurs?
• Is it possible to stop a reaction midway to study an intermediate?
• How is angular momentum conserved as orbiting bodies become tidally-locked?
• Would a nuclear explosion in outer space actually do anything?
• How does NASA come up with mission names?
• What would the Solar neutrino spectrum look like?
• why is the moon so spherical if it doesn't spin on it's own axis?
• Why don't we set the speed of light to exactly 300 million meters per second and 1 meter to 1/300,000,000?
• How do ruminants send food to the rumen and chewed cud to the omasum?
• Is Bioelectrogenesis possible for the human body?
• Are Cichlids in the perch family?
• Why is Xenon used to power ion thrusters instead of other noble gases?

If weight is the measured effect of gravity on an object, and gravity is stronger the closer to the object’s center of mass the measuring object is, do objects high in the atmosphere weigh less than those on the ground, from a physics standpoint? Posted: 06 Dec 2018 11:10 PM PST submitted by /u/RagingAesthetic [link] [comments]

Does modern sedentary lifestyle contribute to the rising amount of depression? Posted: 07 Dec 2018 06:40 AM PST Hello r/askscience! ​ Nowadays people are less physically active, and the rate of depression has been rising. Physical exercise is regularly advised as a remedy for depression and other mental health issues. Could it therefore be, that normal mental health requires a "homeostatic" amount of physical activity? Does sedentary lifestyle play a part in the grand scheme of more people becoming depressed? Thanks for the answers :) submitted by /u/ReallyEdgyUsername [link] [comments]

How does our body heat itself up so significantly when it's sick? Posted: 07 Dec 2018 06:53 AM PST What exactly does it do to accomplish this? Presumably the fevered person is just lying in bed all day, so how does the body produce so much more heat than usual? I'd imagine it has something to do with burning more energy in your body, but it's not like the chemical energy stored in our fat can be directly converted to thermal energy, right? submitted by /u/SengokuHop [link] [comments]

Are negative mass and anti matter the same thing? Posted: 06 Dec 2018 07:26 PM PST submitted by /u/comik300 [link] [comments]

When did we know that birds are descended from dinosaurs? Posted: 07 Dec 2018 07:12 AM PST I remember back in school, some 25 years ago, that I was taught that maybe birds and dinosaurs were related but that there was no real evidence. Did paleontologists (or whoever knows these things) not know back then, or was my teacher's information just outdated? submitted by /u/bawng [link] [comments]

Is it possible to stop a reaction midway to study an intermediate? Posted: 07 Dec 2018 07:08 AM PST For example, in a synthesis of an inorganic compound (so enzymes will not necessarily be involved), is there a practical means of halting the progress of a reaction to study intermediates? submitted by /u/throwaway1792747 [link] [comments]

How is angular momentum conserved as orbiting bodies become tidally-locked? Posted: 06 Dec 2018 04:59 PM PST submitted by /u/UniversalAlias [link] [comments]

Would a nuclear explosion in outer space actually do anything? Posted: 06 Dec 2018 12:12 PM PST A nuclear explosion on earth is so damaging because of the intense heat of the fissioned material results in the super-heated atmosphere around it rapidly expanding outward into a shock wave. Its the same way a lightning bolt makes window-rattling thunder, just amplified by a billion. So in outer space, with no atmosphere to expand, wouldn't a nuclear reaction just make a point of intense heat until the material was used up, with no actual "shock wave" of pressure or material expanding outward? Is the idea of detonating a nuclear bomb next to an asteroid to break it apart just science fiction? submitted by /u/Balhannoth [link] [comments]

How does NASA come up with mission names? Posted: 06 Dec 2018 03:31 PM PST Some of the names that NASA gives missions make sense, like Gemini was called that because the two-person capsule. Others, like InSight, don't make a lot of sense to me. It's actually called "The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport" and InSight is the short version, but which of these names came first? Do they come up with the short name and then give it a fancy name, or come up with the fancy name and shorten it? submitted by /u/condog1035 [link] [comments]

What would the Solar neutrino spectrum look like? Posted: 06 Dec 2018 02:07 PM PST The Solar electromagnetic spectrum has a distinct character, full of emission and absorption lines. What would an analogous spectrum "look" like if we observed the various frequencies/wavelengths of neutrinos coming from the sun? submitted by /u/Thowi42 [link] [comments]

why is the moon so spherical if it doesn't spin on it's own axis? Posted: 06 Dec 2018 03:03 PM PST i thought the moon was the result of an impact of another mass with the earth. How did it become an almost perfect sphere if it doesn't spin? submitted by /u/Dug78 [link] [comments]

Why don't we set the speed of light to exactly 300 million meters per second and 1 meter to 1/300,000,000? Posted: 06 Dec 2018 08:24 PM PST submitted by /u/Sythus [link] [comments]

How do ruminants send food to the rumen and chewed cud to the omasum? Posted: 06 Dec 2018 07:04 AM PST From what I understand, ruminants (e.g. cows) eat their food where it's first broken down in the first two chambers of their stomach creating cud. Then they regurgitate the cud and chew it to break it down further before swallowing again where digestion is then completed by the last two stomach chambers and intestines. When swallowing food or cud, what is the mechanism that "selects" where it ends up? submitted by /u/dave7673 [link] [comments]

Is Bioelectrogenesis possible for the human body? Posted: 06 Dec 2018 11:26 AM PST I want to start out by saying that I'm working on a fictional script, in which my characters have been biologically modified with some of natures phenomenons/more complex features. I'm not using magic as a cop out to give my characters powers, although visually, I'd like to exaggerate the visuals a bit. All in all, I'm trying to be scientifically conscientious. One of my characters is going to be capable of Bioelectrogenesis. I want this character to be able to discharge a bolt of electricity visually similar to the way Thor shoots a bolt of lightning at Iron man in the first Avengers movie. From what I understand, the human body could theoretically be a home to cells that create an electrical imbalance potential. In order to have such a biological feature, the body would need to produce some kind of fuel to sustain Bioelectrogenesis. My rudimentary recipe is: Synthetic Hunter's organ (found on an electric eel) + Adrenaline containing ATP = Human ability to discharge electricity. The problems I'm facing are being able to explain (or at least know the reason in my head) how my character can emit a bolt of electricity from his/her arm, and how this would be possible in on land rather than in water like an eel. submitted by /u/WinterSoldier55 [link] [comments]

Are Cichlids in the perch family? Posted: 06 Dec 2018 08:53 AM PST I've recently been quite confused around this. are cichlids still a type of perciform fish? or is cichliformes a new group that isn't perciform? thanks. submitted by /u/Azathothoursavior [link] [comments]

Why is Xenon used to power ion thrusters instead of other noble gases? Posted: 06 Dec 2018 07:49 AM PST submitted by /u/hoirant [link] [comments]

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Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing?

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• Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing?
• Will we ever run out of music? Is there a finite number of notes and ways to put the notes together such that eventually it will be hard or impossible to create a unique sound?
• How do we generate electricity from fusion?
• If I look at my finger, I can follow it smoothly accross my feild of vision. But if I try to do that facing a wall my vision jumps from side to side instead of snoothly following the lines on the wall. Why is this? And more importantly could I train myself to run my vision amoothly along a wall?
• Can particles spontaneously change from right- to left-handed? Does this give them mass?
• Why can't we detect Hawking Radiation?
• It seems like too large a coincidence that the moon rotates in sync with its revolution around the Earth. Do we have theories on how this came to be, or is it an unsolved mystery?
• Why has vacuum insulation never been used in buildings?
• Is it possible to apply painter's algorithm to the polygonal faces of a polyhedron in order to render said polyhedron subject to perspective projection?
• Is it at all possible that since Oumuamua is an extrasolar object, that it may have disturbed parts of the Oort cloud, sending some other objects our way, or is everything out there too far apart that a collision would be unlikely?
• What happens in a Lead-acid battery that has been discharged too deeply and now is producing noticeable less voltage?
• Why are there no early hominids?
• Are there planets with mountains so high they extend past the atmosphere so you could literally climb your way into zero gravity looking over the curvature of the entire planet?
• Is there a difference between the skin on your face and the skin on your body?
• Please explain me Pi bonds and Sygma bonds f Covalent bonds ??
• How do we know it takes the earth 365 days to revolve around the sun?
• Is it possible to make a 1 osmolar solution of NaCl?
• How come we didn’t evolve to not require sleep?
• How do muscle "knots" occur?
• Why don't we dream under a general anaesthesia?
• Assuming the calorie count posted on a chip bag label will never be 100% exact, what is a realistic range in which the 'true' calorie count would fall?
• Does the earth's magnetic field impact plate tectonics?
• What were the breakthroughs that allowed for precision engineering required for clocks?

Did the Earth's orbit immediately stabilize into the ~365.25 day cycle at the formation of the solar system, or was it a much longer cycle? And if so, how much time did it take? Is it still changing? Posted: 05 Dec 2018 03:29 PM PST I'm interested to know if Earth's "year" has always been the same length of time. submitted by /u/Semyonov [link] [comments]

Will we ever run out of music? Is there a finite number of notes and ways to put the notes together such that eventually it will be hard or impossible to create a unique sound? Posted: 06 Dec 2018 06:45 AM PST submitted by /u/goo429 [link] [comments]

How do we generate electricity from fusion? Posted: 06 Dec 2018 06:04 AM PST How do we catch the energy from fusing two atoms and generate electricity from that? submitted by /u/TheSpaceFrontier [link] [comments]

If I look at my finger, I can follow it smoothly accross my feild of vision. But if I try to do that facing a wall my vision jumps from side to side instead of snoothly following the lines on the wall. Why is this? And more importantly could I train myself to run my vision amoothly along a wall? Posted: 05 Dec 2018 09:39 AM PST submitted by /u/JacobMC-02 [link] [comments]

Can particles spontaneously change from right- to left-handed? Does this give them mass? Posted: 06 Dec 2018 05:06 AM PST I stumbled upon Leonard Susskind's lecture called "Demistifying the Higgs Boson" where he attempts to explain the Higgs mechanism in more depth than just claiming that it's space molasses that give particles mass via physical drag. Here is the lecture https://www.youtube.com/watch?v=JqNg819PiZY I was more or less following his explanations of what condensates and hat-shaped potentials mean as well as how fields can theoretically give particles mass. But at 43:30 he goes into a very specific example: the flipping of electrons from right-handed to left-handed, back and forth, by emitting Z bosons into a condensate to conserve weak hypercharge. He goes as far as saying that the rate at which this flipping occurs is the mass. The emitted Z boson then goes on to also emit and absorb its own hypercharge by emitting "Ziggs bosons". I've done some additional reading and what I've understood so far is that the last part is a toy model dealing with a simplified universe where only the Z boson exists, the "Ziggs" is just that universe's version of the Higgs and the real Higgs phenomenon has more particles and intermediate stages. The problem is that I'm kind of unsure where the facts ended and the toy model began; and some of the facts seem off. Susskind calls the flipping of left/right-handedness of the electron the "spontaneous breaking of chiral symmetry" and upon looking it up on wikipedia it's definitely a thing ( https://en.wikipedia.org/wiki/Chiral_symmetry_breaking ) although I don't understand most of the article. It does seem to say 99% of the mass of nucleons comes from this rather than the Higgs mechanism. The problem is that the Z boson has a hypercharge of 0 so I don't see how it can do what he said it did, which is maintain charge conservation when the particles flip and become "hyperneutral". And how can tiny electrons and quarks be constantly emitting these massive 91GeV Z bosons at normal energies? I believe I'm either missing an important piece of the puzzle or taking an analogy at face value somewhere. I'd be happy to get some explanation on the role of chiral symmetry breaking in giving particles mass. submitted by /u/Swingfire [link] [comments]

Why can't we detect Hawking Radiation? Posted: 05 Dec 2018 11:40 PM PST I was reading that so far Hawking Radiation hasn't been detected. But if we point a radio telescope to a black hole, shouldn't we receive some signs of it? What's the catch? And how can it be found? submitted by /u/Tdaxiao [link] [comments]

It seems like too large a coincidence that the moon rotates in sync with its revolution around the Earth. Do we have theories on how this came to be, or is it an unsolved mystery? Posted: 05 Dec 2018 11:11 PM PST As a followup, are we familiar with other natural orbiting objects with a similar phenomenon? submitted by /u/while-true-do [link] [comments]

Why has vacuum insulation never been used in buildings? Posted: 06 Dec 2018 12:58 AM PST submitted by /u/dmo7000 [link] [comments]

Is it possible to apply painter's algorithm to the polygonal faces of a polyhedron in order to render said polyhedron subject to perspective projection? Posted: 06 Dec 2018 12:22 AM PST I've successfully rendered an orthogonal representation of several polyhedra (a tetrahedron, a cube, and a rectangular prism) by ordering their faces according to the planes in which each polygonal face exists using the plane equation n * <x, y, z> = d. I've successfully rendered the individual faces of polyhedra subject to perspective projection, but I can't figure out how to correctly order them (plane-equation ordering is insufficient). submitted by /u/CaedenM [link] [comments]

Is it at all possible that since Oumuamua is an extrasolar object, that it may have disturbed parts of the Oort cloud, sending some other objects our way, or is everything out there too far apart that a collision would be unlikely? Posted: 05 Dec 2018 06:59 PM PST submitted by /u/SchrodingersCatPics [link] [comments]

What happens in a Lead-acid battery that has been discharged too deeply and now is producing noticeable less voltage? Posted: 05 Dec 2018 08:25 PM PST Such as a car battery that was drained and now only produces 10-11 volts. submitted by /u/FirstMiddleLass [link] [comments]

Why are there no early hominids? Posted: 05 Dec 2018 01:43 PM PST Since we evolved from monkeys, how come there isn't any early hominids in the process of evolving still? Would it make sense for life to have an evolution cut-off? submitted by /u/StarShooter08 [link] [comments]

Are there planets with mountains so high they extend past the atmosphere so you could literally climb your way into zero gravity looking over the curvature of the entire planet? Posted: 05 Dec 2018 12:46 PM PST Just a cool thing to imagine submitted by /u/reddituser2806 [link] [comments]

Is there a difference between the skin on your face and the skin on your body? Posted: 05 Dec 2018 09:21 AM PST From a physiological standpoint, is there much of a difference? Is there a difference between the biology of male/female skin? submitted by /u/Lootylootylalala [link] [comments]

Please explain me Pi bonds and Sygma bonds f Covalent bonds ?? Posted: 06 Dec 2018 02:14 AM PST submitted by /u/uros03 [link] [comments]

How do we know it takes the earth 365 days to revolve around the sun? Posted: 05 Dec 2018 10:41 AM PST submitted by /u/PregnantMosquito [link] [comments]

Is it possible to make a 1 osmolar solution of NaCl? Posted: 05 Dec 2018 03:33 PM PST submitted by /u/doesany1lookatthis [link] [comments]

How come we didn’t evolve to not require sleep? Posted: 05 Dec 2018 10:16 AM PST it seems pretty straight forward; having more time taken away from sleeping is more time that can be used for other things more beneficial for us. submitted by /u/WarsMughal47 [link] [comments]

How do muscle "knots" occur? Posted: 05 Dec 2018 05:18 AM PST submitted by /u/AmazingCamel [link] [comments]

Why don't we dream under a general anaesthesia? Posted: 05 Dec 2018 06:59 AM PST Why can't we dream under a general anaesthesia? submitted by /u/laughinggas [link] [comments]

Assuming the calorie count posted on a chip bag label will never be 100% exact, what is a realistic range in which the 'true' calorie count would fall? Posted: 05 Dec 2018 10:08 AM PST For example, I ate a bag of Lays BBQ chips that was 230 calories according to the label. Of course, every bag might be slightly different (not to mention the amount of broken chips/crumbs at the bottom that might or might not be consumed). So I'm guessing if I had some sort of hypothetical machine that I could pour the contents of the bag into and have it tell me the real calorie count (or if I had omniscient knowledge of the real calorie count), how much is any one bag (or whatever unit we're considering) going to deviate? For example, could a 230 calorie bag actually range from 228-232, or could it be more? I'm not calorie counting, just curious. submitted by /u/josephtheepi [link] [comments]

Does the earth's magnetic field impact plate tectonics? Posted: 05 Dec 2018 09:05 AM PST I figured it was a convenient explanation for why the South pole has a giant continent, while the North pole is ocean --- even though most of earth's landmass is crowded in the Northern hemisphere around the actual pole itself. I would expect the constantly circulating magnetic force plus mantle convection to push the earth's crust into that sort of pear shape (South pole = stem end, North pole = blossom end). Is this a real theory, or is there a different one that better explains our observations? submitted by /u/philotrow [link] [comments]

What were the breakthroughs that allowed for precision engineering required for clocks? Posted: 05 Dec 2018 02:33 PM PST I like watching blacksmithing videos on youtube. But usually they'll use power tools to remove metal or do anything precise. But I was wondering since clocks far predate power tools what were the steps between some guy with a hammer making square nails and the fine work required for clocks, still one of the finest work out there. submitted by /u/Flopsey [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States

Why is the Ozone Layer Hole in the South Pole? Why isn't it in the North Pole?

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• Why is the Ozone Layer Hole in the South Pole? Why isn't it in the North Pole?
• How does dark matter effects black holes?
• What problems do different programming paradigms try to address? Why were newer paradigms thought of?
• How do investigators determine the source of a hack (such as a state actor)?
• During the Neolithic Subpluvial era, how did South American rain forests get their minerals?
• What is limiting the speed in which quantum computers can run? For instance, besides security issues, why can’t quantum computers guess a password by trial and error? Is the bottle neck just our interpretation of the information?
• Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
• Why do plastic bottles contract with heat?
• Do trees capture more carbon during their growth stage or at full growth? How do trees store carbon when they are no longer adding woody material?
• How does my immune system know not to kill my gut flora? Could diseases exploit this?
• How is it that batteries can provide constant voltage until they’re dead, but a capacitor slowly drops in voltage output until it’s dead? Why don’t batteries do the same thing?
• What is the proper name for a period T, when two wavelengths of different periods simultaneously intercept the x-axis after every T units of time?
• Why is brain death final? Like, why can't we restart or reboot a brain that's been dead for only a few hours?
• How do silkworms produce silk?
• Is there an electron hammer?
• How much does body fat influence our perception of temperature?
• Why is Uranus's odd axial tilt more than 90°?
• In descriptions of Hawking radiation, why is t always the matter particle out of the matter/antimatter virtual particles that escapes?
• How could an ultra massive black hole form?
• What advantages did Archosaurs have that allowed them to diversify in the Triassic and eventually dominate?

Why is the Ozone Layer Hole in the South Pole? Why isn't it in the North Pole? Posted: 05 Dec 2018 02:04 AM PST Every time i see articles or news about the Ozone Layer Hole (for which the media is kind of silent recently), I always see photos/graph of the hole in the South Pole, but I've never heard about it in the north pole. Is there something to do with the Antarctic land mass? submitted by /u/Tdaxiao [link] [comments]

How does dark matter effects black holes? Posted: 05 Dec 2018 05:53 AM PST If scientists have concluded that dark matter interacts through gravity with it's surrounding then shouldn't black holes be affected by it? Shouldn't black holes be getting "more stuff in them" than what is being calculated using visible matter? Or is dark matter taken under consideration in those calculations? submitted by /u/parthtrap [link] [comments]

What problems do different programming paradigms try to address? Why were newer paradigms thought of? Posted: 05 Dec 2018 12:56 AM PST Having read through http://cs.lmu.edu/~ray/notes/paradigms/ and some Wikipedia pages to try and understand what programming paradigms are and examples of them, I've been left wondering why many different ones exist. submitted by /u/VoidNoire [link] [comments]

How do investigators determine the source of a hack (such as a state actor)? Posted: 05 Dec 2018 07:46 AM PST It seems like any hacker worth their salt knows how to protect their identity online, and when carrying out these attacks surely they use TOR or other methods to keep their IP secret. How then do investigators determine the likely source of an attack? submitted by /u/clunky404 [link] [comments]

During the Neolithic Subpluvial era, how did South American rain forests get their minerals? Posted: 05 Dec 2018 07:01 AM PST https://earthsky.org/earth/saharan-dust-feeds-amazon-rainforest-perfectly I'm a bit confused here. How would that have occurred during a wet Sahara? submitted by /u/bluefirecorp [link] [comments]

What is limiting the speed in which quantum computers can run? For instance, besides security issues, why can’t quantum computers guess a password by trial and error? Is the bottle neck just our interpretation of the information? Posted: 04 Dec 2018 05:07 PM PST Sorry if the example was bad I didn't really have a good one in my head. submitted by /u/TheWaMR [link] [comments]

Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 05 Dec 2018 07:12 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Economics, Political Science, Linguistics, Anthropology Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

Why do plastic bottles contract with heat? Posted: 05 Dec 2018 07:05 AM PST Just threw a plastic bottle into a fire (sorry) and watched it contract and curl about the middle of the bottle. It looked like the middle was pulling both ends of the bottle towards it so i'm fairly certain it wasn't just melting. submitted by /u/thepoobums [link] [comments]

Do trees capture more carbon during their growth stage or at full growth? How do trees store carbon when they are no longer adding woody material? Posted: 05 Dec 2018 07:00 AM PST Do trees capture more carbon during their growth stage or at full growth? How do trees store carbon when they are no longer adding woody material? I imagine part of it is through leaf growth, but how else? If in the soil, how does that work? submitted by /u/remynwrigs240 [link] [comments]

How does my immune system know not to kill my gut flora? Could diseases exploit this? Posted: 04 Dec 2018 01:04 PM PST I would imagine that an enormous repository of bacteria in the intestine would look a lot like a bacterial infection to an immune system. Also, given that my immune system doesn't kill my gut flora (by whatever mechanism that is), could harmful bacteria exploit this mechanism to prevent me from fighting off an infection? submitted by /u/BrainEnema [link] [comments]

How is it that batteries can provide constant voltage until they’re dead, but a capacitor slowly drops in voltage output until it’s dead? Why don’t batteries do the same thing? Posted: 04 Dec 2018 10:09 AM PST submitted by /u/Great_Lord_Kek [link] [comments]

What is the proper name for a period T, when two wavelengths of different periods simultaneously intercept the x-axis after every T units of time? Posted: 05 Dec 2018 01:19 AM PST Suppose you are observing your car indicator beeping at a certain periodical frequency (every x seconds) and the car in front of you also has an indicator beeping (every y seconds). After every x•y seconds, the beeps appear to synchronize at least once. I tried to visualize it as wave functions, but what is the proper term for me to lookup the solution online? Thanks a bunch submitted by /u/Zeitgeist94 [link] [comments]

Why is brain death final? Like, why can't we restart or reboot a brain that's been dead for only a few hours? Posted: 04 Dec 2018 12:16 PM PST I can understand why catastrophic brain damage would be hard to come back from, but let's take a case where the brain just goes without oxygen for a few hours without any other physical trauma. Why can't we bring it back by giving it oxygenated blood again? Is it decay or something else? submitted by /u/DB487 [link] [comments]

How do silkworms produce silk? Posted: 04 Dec 2018 11:18 AM PST submitted by /u/clamalo [link] [comments]

Is there an electron hammer? Posted: 04 Dec 2018 09:46 AM PST I'm pretty well familiar with the idea of a water hammer when a valve is shut off quickly along a piping system. Is there a similar phenomenon in electricity? I was vacuuming and felt uncomfortable accidentally unplugging the vacuum while it was on then replugging (the brave little toaster scarred me with vacuum damage). I thought more about it and decided maybe it wasn't terrible due to AC current but then I wondered heavily about even that sudden cycling. Is an "electron hammer" a thing? Is the force negligible due to the low mass of electrons? Could it theoretically cause damage in the worst of circumstances (high amp DC)? Thank you so much in advance! Ninja edit: son of a gun aren't most electric motors DC? So yeah back to my original fear of damaging the vacuum with on/offing. submitted by /u/Dantelaw [link] [comments]

How much does body fat influence our perception of temperature? Posted: 04 Dec 2018 10:02 AM PST Let's say you have a 5'5" 100 lb person, a 5'5" 150 lb person, and a 5'5" 200 lb person. Assume all other factors have been controlled eg they're all clones of the same person who are acclimated to the same climate etc etc. You put them all outside in 100F, or 0F, or -40F, in the same clothing. Do they all feel equally as warm, or does the insulating effect of fat cause some of them to feel perceptibly more or less comfortable? And is this something we've been able to measure I.e. if you weigh 200lbs you'll feel x degrees warmer than someone who weighs 100lbs? submitted by /u/your_internet_frend [link] [comments]

Why is Uranus's odd axial tilt more than 90°? Posted: 04 Dec 2018 08:05 AM PST So Uranus has an axial tilt of 97.77° "as defined by prograde rotation", or the rotation of most of the other planets in the solar system. My question is how come it's not 82.23° and rotating in the opposite direction instead of assuming the entire planet has flipped over? Also the same would go for Venus with its axial tilt of 177.4° instead of 2.6°; is it impossible for a planet to naturally rotate around its axis in the opposite direction of that of its home star? What are the mechanics involved in deciding which way the planets will spin during the birth of a solar system? submitted by /u/marvindakat [link] [comments]

In descriptions of Hawking radiation, why is t always the matter particle out of the matter/antimatter virtual particles that escapes? Posted: 04 Dec 2018 10:27 AM PST I see Hawking radiation described as matter/antimatter pairs of virtual particles coming into existence at the event horizon with the matter one escaping , therefore leaving the antimatter behind in the black whole to reduce its mass. Shouldn't the antimatter virtual particle also escape half the time balancing it out? submitted by /u/Khoalb [link] [comments]

How could an ultra massive black hole form? Posted: 04 Dec 2018 07:33 AM PST I've read that solar or near solar mass black holes would form mostly from novae. And that larger black holes could be primordial, or mergers, or black holes that have eaten a significant amount of matter. These were the theoretical explanations for the first LIGO merger black holes. (Could be wrong on that one). My question is, since supermassive black holes seem to be "common" and ultra massive black holes like the one in TON618 exist, what explanation could there be for the huge variance in mass? It seems to me that the black hole in TON618 would have had to consume 4+ solar masses per year for the entire age of the universe to be that large. submitted by /u/aneyeohlayer [link] [comments]

What advantages did Archosaurs have that allowed them to diversify in the Triassic and eventually dominate? Posted: 04 Dec 2018 09:54 AM PST After the Permian extinction, what allowed Archosauriformes to dominate (Phytosaurs, Crocodylomorphs, Dinosaurs, Pterosaurs, etc.) rather than Therapsids, other reptiles, or amphibians? Is there a reason other reptiles took over the seas and Archosaurs did not? Why were Archosaurs equipped to survive the Triassic/Jurassic Extinction and continue to dominate? submitted by /u/TomorrowMayRain065 [link] [comments]

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