How do ancient languages compare to modern ones in terms of complexity? Roughly the same?

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• How do ancient languages compare to modern ones in terms of complexity? Roughly the same?
• Is IQ a predictor of personality traits, such as empathy or antisocial behavior?
• Would it be possible for a star to have planets that orbited it both horizontally and vertically?
• How do mirrors reflect light from a quantum perspective?
• Do particles from the solar wind cause any outward velocity pressure on the planets in their orbits?
• Would a supernova produce an audible sound due to the gas cloud formed during the explosion?
• How do you calculate kinetic energy in outer space?
• Why this water stream seems frozen?
• Is it possible to design a lens that has no spherical aberration?
• Is there any true scientific evidence for the simulation hypothesis?
• Why can you detect radio waves using a bare wire antenna but special sensors like photodiodes are required for detecting shorter wavelengths like visible light?
• [Biology] Are there any other life forms that practise traditions like humans do?
• When I type on my computer, where does the actual electricity from my keystroke travel to and what physical changes does it cause?
• Do wave functions stay collapsed after an initial measurement, or so they return to a superposition of states?
• Why is the international date line not a straight line?
• Can gravity be so strong that it forces water to become ice?
• Are there plans to search for Life on Europa?
• Can Brownian motion be considered an application of chaos theory ?
• Does acceleration affect density?

How do ancient languages compare to modern ones in terms of complexity? Roughly the same? Posted: 24 Sep 2016 05:02 PM PDT submitted by /u/fromRonnie [link] [comments]

Is IQ a predictor of personality traits, such as empathy or antisocial behavior? Posted: 24 Sep 2016 04:54 PM PDT Fairly simple question with, I'm sure, a fairly complicated answer. Is the measurable intelligence of a person in any way related to their likelihood of being a functionally integrated, relatable member of society? Are those with high IQs more likely to be sociopaths, or have higher emotional intelligence? Are those with low IQs more likely to be aggressive and antisocial, or are they more likely to be empathetic? submitted by /u/CursedLemon [link] [comments]

Would it be possible for a star to have planets that orbited it both horizontally and vertically? Posted: 24 Sep 2016 02:02 PM PDT Could that happen? If not could it be possible for a planet to be orbiting the star on a more diagonal plane compared to the rest of the planets? Or do orbiting bodies always more or less sync up how they orbit the host star? submitted by /u/BlueDreamWidow [link] [comments]

How do mirrors reflect light from a quantum perspective? Posted: 24 Sep 2016 02:04 PM PDT In particular, if a photon hits a flat mirror, it is reflected at the same angle, correct? If photons are absorbed then re emitted by the mirror, how is the angle preserved? Also, is it reflected by the surface only or also by atoms deeper inside? submitted by /u/andrebis [link] [comments]

Do particles from the solar wind cause any outward velocity pressure on the planets in their orbits? Posted: 25 Sep 2016 06:06 AM PDT In other words, if the solar wind were to suddenly cease, would planetary orbits gradually decay due to not being bombarded and "pushed outwards" by these particles? submitted by /u/canadave_nyc [link] [comments]

Would a supernova produce an audible sound due to the gas cloud formed during the explosion? Posted: 24 Sep 2016 11:14 AM PDT submitted by /u/kyliewyote17 [link] [comments]

How do you calculate kinetic energy in outer space? Posted: 25 Sep 2016 12:31 AM PDT If ke = 0.5 mv2 (squared) what is v relative too? Furthermore, a given rocket rocket has a fixed delta-v, and it's total energy is fixed so this implies that kinetic energy would be linear. Can someone enlighten me. P.s I have a level physics and degree level maths if that helps. submitted by /u/Stevetrov [link] [comments]

Why this water stream seems frozen? Posted: 25 Sep 2016 12:11 AM PDT https://gfycat.com/DeepCheapKronosaurus Is it because of some strange hydrodynamic or is it a similar phenomenon to car wheels in videos? submitted by /u/Handsome_Claptrap [link] [comments]

Is it possible to design a lens that has no spherical aberration? Posted: 25 Sep 2016 04:55 AM PDT A parabolic mirror can reflect all incoming rays parallel to the optical axis to a single focus. Is there an analogous geometry for a lens that can do the same, at least for a single wavelength of light, so that spherical aberration is not a concern? submitted by /u/fzztr [link] [comments]

Is there any true scientific evidence for the simulation hypothesis? Posted: 24 Sep 2016 11:01 PM PDT It's becoming fairly common to see articles claiming certain chances that the reality we live in is not a "base" reality. Elon musk claims it's one in a billion that this isn't a simulation. Bank of America says it's 50%. I've been unable to find true science behind these claims. They seem to originate from anecdotal evidence, such as looking at Moore's and saying it will eventually be impossible to tell simulation from reality. What, if any, actual evidence or tests have been done? The Wikipedia page goes into a little bit about testing by trying to prove that the universe is a finite lattice, but how could this actually be done? And if even points out that it wouldn't even be proof of a simulated reality. One additional thought I've had is about the Moore's law idea. Technology as we know is made of finite values, binary is 0 or 1, Trinary is 0, 1, or 2, etc. But there really isn't any room for probabilistic outcomes. Quantum mechanics as we know it is based on probability. My thought here is that our current technology couldn't even be the predecessor to something that could be a new universe. That coupled with the fact that Moore's law is an observation and not a rule, seems to provide an anecdotal argument to the anecdotal evidence that I've seen used. Am I missing something here? submitted by /u/holy_halo_man [link] [comments]

Why can you detect radio waves using a bare wire antenna but special sensors like photodiodes are required for detecting shorter wavelengths like visible light? Posted: 24 Sep 2016 02:26 PM PDT Car and handheld radios are capable of detecting low wavelength electromagnetic frequencies using only a wire antenna. Why is it that we cannot detect frequencies of visible/other light in this way? Would it simply require a shorter length of wire than would be practical? submitted by /u/PartPangolin [link] [comments]

[Biology] Are there any other life forms that practise traditions like humans do? Posted: 24 Sep 2016 03:16 PM PDT submitted by /u/Mydogatemyexcuse [link] [comments]

When I type on my computer, where does the actual electricity from my keystroke travel to and what physical changes does it cause? Posted: 24 Sep 2016 04:01 PM PDT I'm so curious about where the actual rubber meets the road when it comes to instructions I send to my CPU. submitted by /u/SkincareQuestions10 [link] [comments]

Do wave functions stay collapsed after an initial measurement, or so they return to a superposition of states? Posted: 24 Sep 2016 06:30 PM PDT For instance, if I were to measure the system a second time, would there be a 100% chance that the system is in the same configuration observed upon the initial measurement/collapse? Or does the wave function return to a superposition of states and collapse again every time the system is measured? submitted by /u/creamulum [link] [comments]

Why is the international date line not a straight line? Posted: 24 Sep 2016 03:56 PM PDT submitted by /u/dw_horizon [link] [comments]

Can gravity be so strong that it forces water to become ice? Posted: 24 Sep 2016 02:08 PM PDT submitted by /u/ParadiseEarth [link] [comments]

Are there plans to search for Life on Europa? Posted: 24 Sep 2016 11:07 AM PDT submitted by /u/coreyj694 [link] [comments]

Can Brownian motion be considered an application of chaos theory ? Posted: 24 Sep 2016 10:42 AM PDT Chaos theory applies to systems highly sensitive to initial conditions. In the (highly unlikely) situation where we know everything about every particle (for exemple, in the case of a computer simulation), can Brownian motion, a typical stochastic process, be considered an application of chaos theory ? submitted by /u/Slaaneshou [link] [comments]

Does acceleration affect density? Posted: 24 Sep 2016 01:44 PM PDT Ladder Paradox Shutting the garage door, is there a solution for this. For this to be possible the volume of the ladder should decrease because of slowing down. If this is the case is it true for all accelerations? For example: - Increasing acceleration (speeding up) will decrease your density. (Less volume) - Increasing your acceleration in negative sign (slowing down) will increase your density. (More volume) Is this true? submitted by /u/schlinglebop [link] [comments]

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[Physics] when a star dies the explosion creates heavier element like gold and platinum. Is it possible to estimate the amount of a perticular element a star will make when it dies?

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• [Physics] when a star dies the explosion creates heavier element like gold and platinum. Is it possible to estimate the amount of a perticular element a star will make when it dies?
• Is the exhaust from an ion thruster hot, reactive, or radioactive? Would it harm, say, a human hand?
• How does cutting smth work in a microscopic/atomic scale? Do we break the chemical bond btw the molecules (eg peeling a fruit)?
• How does hypoglycemia cause seizures?
• navier stokes equation. 2 questions regarding it. basically, what is this proof about and why can it help?
• Can brain damage alter what a person sees?
• Why does facial skin is most likely to have pimple than elsewhere?
• Why did we develop anxiety as an evolutionary advantage and why do so many people suffer from it today?
• In what order do bones develop when a baby is in the womb?
• What was the chemical composition of the Earth's atmosphere prior to the Great Oxygenation Event?
• What happens to the dipol-inducing wave energetically during Rayleigh scattering?
• Does the Leidenfrost Effect still apply to extreme temperatures that are too extreme?
• What keeps sugar cubes together?
• What are the latest developments concerning prime numbers?
• If you were to reflect a photon between two perfect mirrors endlessly, would it eventually run out of energy from exertion of radiation pressure?
• Does time gradually change and distort in a regular way between the quantum scale and the universe's scale?
• Where does charge come from?
• Does the amount of fusion change as a star evolves?
• Why do people think that everything is contained within π? Where did this idea come from and is there any logic or proof for it?
• In theory, is gravity, as we know it, ubiquitous among the universes in the multi-verse theory?
• Is an inertial dampener entirely science fiction? Or is there a theoretical way to actually make one?
• When astronauts go into space, is there a certain area where they immediate feel Zero G, or do they gradually feel less and less gravity on their way up?

[Physics] when a star dies the explosion creates heavier element like gold and platinum. Is it possible to estimate the amount of a perticular element a star will make when it dies? Posted: 24 Sep 2016 03:00 AM PDT submitted by /u/beardenstine [link] [comments]

Is the exhaust from an ion thruster hot, reactive, or radioactive? Would it harm, say, a human hand? Posted: 23 Sep 2016 11:27 PM PDT I'm actually pretty shocked that I couldn't find any info on Google. From what I can tell, ion thrusters spit out propellant on the order of milligrams per second; low mass at very high speed. If you had your hand behind one, would this be more similar to a fan blowing dusty air at you or a shotgun loaded with sand-filled shells? submitted by /u/king_aseg [link] [comments]

How does cutting smth work in a microscopic/atomic scale? Do we break the chemical bond btw the molecules (eg peeling a fruit)? Posted: 24 Sep 2016 01:13 AM PDT Do we break the chemical bond btw the molecules (eg peeling a fruit)? I know there might be different answers for different type of items, eg cutting a fruit/vegetable or cutting a meat, which is very different from cutting a wood. I think it would be different in chipping a iron ore? submitted by /u/i_need_zzz [link] [comments]

How does hypoglycemia cause seizures? Posted: 24 Sep 2016 06:19 AM PDT submitted by /u/Jolly_Misanthrope [link] [comments]

navier stokes equation. 2 questions regarding it. basically, what is this proof about and why can it help? Posted: 24 Sep 2016 04:47 AM PDT going from this article it states The trouble is that no one has ever been able to prove that the equations don't sometimes 'blow up' and produce physically impossible results and Such a proof could lead to better aeroplane and boat designs, and improve weather prediction so some questions. what does the first statement even mean? "prove" what about the equation? how come this proof will lead to what its stated by the second equation? submitted by /u/Whatitsjk1 [link] [comments]

Can brain damage alter what a person sees? Posted: 24 Sep 2016 12:55 AM PDT I know that our senses (eyes, ears, etc) just relay information to the brain, and the brain is what actually does the sensing (seeing, hearing, etc). So can damage to a specific part of the brain alter how the brain understands the data from our senses? Moreover, is it possible to change how the brain interprets the info from the eye for example, so as to create images that are not actually there? submitted by /u/i_m_no_bot [link] [comments]

Why does facial skin is most likely to have pimple than elsewhere? Posted: 23 Sep 2016 09:26 PM PDT For example i don't have a pimple on skin of my forearm but got some on my forehead :) submitted by /u/n_tvshn [link] [comments]

Why did we develop anxiety as an evolutionary advantage and why do so many people suffer from it today? Posted: 23 Sep 2016 08:50 PM PDT Evolution is survival of the fittest; so why/how is anxiety a "positive" thing that we developed and kept so strongly throughout our evolution? This is not a call for religion vs science, so please don't go there in this thread. submitted by /u/etiks [link] [comments]

In what order do bones develop when a baby is in the womb? Posted: 24 Sep 2016 02:54 AM PDT submitted by /u/Stew02 [link] [comments]

What was the chemical composition of the Earth's atmosphere prior to the Great Oxygenation Event? Posted: 23 Sep 2016 09:08 PM PDT I assume it was mainly nitrogen. Water vapor would be common since there's evidence of water almost immediatly after the Earth's formation, but since it was a hot planet, then I assume much of it would be in gaseous form. Carbon dioxide and sulfur were probably present in high concentrations due to the high volcanic activity. However, I'm just assuming all of this- I couldn't find any studies about it. submitted by /u/JasontheFuzz [link] [comments]

What happens to the dipol-inducing wave energetically during Rayleigh scattering? Posted: 24 Sep 2016 01:40 AM PDT As far as I understand Rayleigh-Scattering happens when a EM wave hits a relatively small particle and induces a Dipol which emits a wave with the same wavelength. However, to induce that dipol some energy must be lost and therefore the color of the light would have to switch more towards the red spectrum? What am I missing? submitted by /u/Doodlesulk [link] [comments]

Does the Leidenfrost Effect still apply to extreme temperatures that are too extreme? Posted: 23 Sep 2016 11:28 PM PDT For example: being near the point of lasers' focus at the National Ignition Facility in USA or near the temperature created by the Large Hardron Collider. Just did a little reading and that stuff outputs insane amount of energy. LHC: 5.5 trillion K and NIF ~3 mil K submitted by /u/Blobify [link] [comments]

What keeps sugar cubes together? Posted: 23 Sep 2016 03:45 PM PDT Or a better question: what's the difference between regular loose sugar and sugar cubes? Something has to keep the sugar cubes... Well, cubes. I know it has to be some kind of humidity, but is it water? submitted by /u/sexy_tangerine [link] [comments]

What are the latest developments concerning prime numbers? Posted: 23 Sep 2016 02:31 PM PDT This topic seems to be researched by many - any new stuff? submitted by /u/b4b [link] [comments]

If you were to reflect a photon between two perfect mirrors endlessly, would it eventually run out of energy from exertion of radiation pressure? Posted: 23 Sep 2016 11:28 PM PDT If you were to reflect a photon between two perfect mirrors endlessly, would it eventually run out of energy from exertion of radiation pressure? And what would happen to the photon once that occurred (since a perfect mirror can't absorb a photon)? Surely a photon can't just keep endlessly transferring momentum to the 2 mirrors? submitted by /u/fagdgadfsgafg [link] [comments]

Does time gradually change and distort in a regular way between the quantum scale and the universe's scale? Posted: 23 Sep 2016 08:37 PM PDT Is that part of relativity as well? submitted by /u/filmdc [link] [comments]

Where does charge come from? Posted: 23 Sep 2016 10:58 PM PDT I know that electrons have negative charge and protons have positive charge, and that opposites attract and the same charge repels, but where does charge come from? The spin of the particles? What makes positive charge different from negative charge? submitted by /u/spmurgemag [link] [comments]

Does the amount of fusion change as a star evolves? Posted: 23 Sep 2016 03:49 PM PDT I'm researching the fusion processes in stars and am hitting some snags. I can't seem to find information on the amount of fusion that occurs in stars outside our own. -How does fusion scale with radius and mass? I assume gravity is sucking in the hydrogen around it to give it a supply, so how can I scale that amount with the size and/or mass of a star? -When a star starts fusing helium and creates layers of elements (like a Red Giant that has a hydrogen shell around a helium core), does the outer shell fuse more, equal, or less hydrogen than its previous form? Basically, I'm kind of looking for some kind of equation for fusion based on the classification of a star. It doesn't have to be extremely specific, or perfect, per class. I just need some kind of starting point. I feel like I keep hitting dead ends with my hunches. Thanks everyone! :) submitted by /u/Darknuke [link] [comments]

Why do people think that everything is contained within π? Where did this idea come from and is there any logic or proof for it? Posted: 23 Sep 2016 08:05 PM PDT For the statement that everything is in π to be true, this would also mean that π is in π. A sort of π'ception would occur creating a repeating number making π a rational number. This raises additional questions: *Is π definitely a irrational number? *Is there any proof that it is? *How do we know that π doesn't? *How do they even calculate π? submitted by /u/marnoch [link] [comments]

In theory, is gravity, as we know it, ubiquitous among the universes in the multi-verse theory? Posted: 23 Sep 2016 06:28 PM PDT Was thinking about the multi-verse theory - with infinitely differing timelines and matter, is gravity and the way it functions consistent among universes? Or can gravity function infinitely different ways in all these universes? Obviously this isn't known, but what is the prevailing theory? submitted by /u/pengdrew [link] [comments]

Is an inertial dampener entirely science fiction? Or is there a theoretical way to actually make one? Posted: 23 Sep 2016 08:02 PM PDT submitted by /u/Foofymonster [link] [comments]

When astronauts go into space, is there a certain area where they immediate feel Zero G, or do they gradually feel less and less gravity on their way up? Posted: 23 Sep 2016 09:04 PM PDT Title. submitted by /u/Markizkot1005 [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
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If I put a flashlight in space, would it propel itself forward by "shooting out" light?

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• If I put a flashlight in space, would it propel itself forward by "shooting out" light?
• A woman with a long history with major chemical corporations told me yesterday that CO2, Diamonds and Pencil Lead were Organic, is she right?
• Why does silver have a really high coefficient of friction with itself, but low when it has friction against other materials?
• How can polarizations other than linear and circular exist?
• What are the advantages of solid state waveguide lasers over diode lasers?
• Could a beam of positrons directed at an atomic structure eventually cause the atoms to break apart due to electron/positron annihilation?
• Can someone explain the octet rule?
• Do spherical harmonics, used to describe the electron distributions of atomic orbitals, find other uses in fields other than physics/ chemistry?
• What is the Quantum Field Theory?
• Could the Chicxulub asteroid impact possibly have pollinated nearby planets/moons through panspermia?
• In accelerators are elementary particles created from the energy of the collision or the proton somehow breaking apart?
• Why do planets and moons tend to have orbits within a single plane, whereas some galaxies are relatively globular?
• Is it possible to have a magnet where 100% of the domains point towards the same direction?
• How dangerous is it to handle Tritium?
• Why is the Cape floristic region so small, what makes it a separate floristic region from the rest of South Africa, and why are there no similarly small regions elsewhere?
• Genetics: Is The Only Way for a Man to Make a Detectable Genetic Contribution Through Successive Generations is to Have a Son, and A Woman to have a Daughter?
• What impact does our diet have on climate change?
• Does a van de graaf generator make you positive or negative?
• Why are melanocytes found in the heart and bones?
• What is "silicone" cookware made of? Isn't silicone a silvery, crystalline metal?
• How do vibrations without changes in dipole moment occur?

If I put a flashlight in space, would it propel itself forward by "shooting out" light? Posted: 23 Sep 2016 05:18 AM PDT submitted by /u/nico1207 [link] [comments]

A woman with a long history with major chemical corporations told me yesterday that CO2, Diamonds and Pencil Lead were Organic, is she right? Posted: 23 Sep 2016 06:12 AM PDT Now to Clarify I work with this woman, L (chemist with history at major chemical producers) I'm in the IT Department, we had dinner last night with another colleague (PhD environmental biology). Now during the meal they were chatting chemistry and L's work history and such, I wasn't paying full attention because I don't know anything about chemistry. But basically it came up that anything that contains Carbon is organic. So, being curious I asked L if a diamond would be organic. She says yes, anything that contains carbon is organic. I ask if there's a difference between the term "organic" to a chemist as opposed to a biologist, she replies that "organic is just a Marketing term" but doesn't really answer my question and just acted a bit condescending about the fact that I don't have a chemistry background. I asked a friend of mine who took high school chemistry and he said he'd never heard of it and that I should ask her if CO2 is organic, she says it is... So my question, because she was rude and I wasn't interested in asking again, is Is the term Organic meaning anything with carbon in it a term only used as such in chemistry? I had learned that organic meant that it was an organism, that it had lived at some point or another. TL;DR: My coworker told me that any carbon containing compound is organic, but I always learned that organic meant that it was once living. submitted by /u/SevFTW [link] [comments]

Why does silver have a really high coefficient of friction with itself, but low when it has friction against other materials? Posted: 22 Sep 2016 02:26 PM PDT submitted by /u/SlightlyTurgidHead [link] [comments]

How can polarizations other than linear and circular exist? Posted: 22 Sep 2016 07:31 PM PDT I'm specifically curious about elliptical polarization. If my understanding of this is correct (and it may not be) photons must travel with their e and b fields perpendicular to eachother and to the direction of travel. This would make circular polarization equivalent to a rotating (along the axis of propagation) photon and linear polarization equivalent to a non-rotating photon. I was also under the impression the ratio of the e and b fields is a constant. How are elliptical polarizations possible? Are one or more of the above incorrect? submitted by /u/AlohaItsASnackbar [link] [comments]

What are the advantages of solid state waveguide lasers over diode lasers? Posted: 23 Sep 2016 01:24 AM PDT I've been hearing a lot of talk about waveguide lasers in the past years, but in what cases are they better than diode lasers? You need a diode laser to pump them anyway, right? submitted by /u/medsl [link] [comments]

Could a beam of positrons directed at an atomic structure eventually cause the atoms to break apart due to electron/positron annihilation? Posted: 22 Sep 2016 11:23 AM PDT submitted by /u/laxmotive [link] [comments]

Can someone explain the octet rule? Posted: 23 Sep 2016 01:16 AM PDT I just attended a chemistry lecture about electrons and the periodic system (Basically just repitition). Long story short: My teacher either both denied and confirmed the octet rule in a span of about 10-15 minutes, or I have completely misunderstood the octet rule. We were talking about potassium and its electron configuration and we determined that the configuration is 2,8,8,1. Then he asked if anyone could tell him why the N shell electron didnt stay in the M shell, since there technically is space for it. I said that valence shells cannot have more than 8 electrons (which, to my understanding, is the octet rule). He said that this was wrong. A while later we'd gone onto valence electrons, and since I was still convinced that there can be cannot be more than 8 valence electrons, I brought this up. At that point he said that valence shells can hold between 2-8 valence electrons, but no more, and denied saying otherwise. I still don't understand what I've mistaken about this. Can someone clear this up? submitted by /u/LegendaryZioke [link] [comments]

Do spherical harmonics, used to describe the electron distributions of atomic orbitals, find other uses in fields other than physics/ chemistry? Posted: 23 Sep 2016 08:11 AM PDT I feel like they would be used in areas of engineering (such as propagation of waves on a spherical surface?) but I couldn't find anything to go on. Maybe I'm wrongly interpreting what they actually are. The wikipedia pages don't shed any light on their history/ 'discovery'. submitted by /u/Appaulingly [link] [comments]

What is the Quantum Field Theory? Posted: 23 Sep 2016 08:05 AM PDT submitted by /u/NameForThings [link] [comments]

Could the Chicxulub asteroid impact possibly have pollinated nearby planets/moons through panspermia? Posted: 22 Sep 2016 08:56 PM PDT submitted by /u/saiphir [link] [comments]

In accelerators are elementary particles created from the energy of the collision or the proton somehow breaking apart? Posted: 23 Sep 2016 02:57 AM PDT (edit: When I mean "breaking apart" that the proton is "busted" into its constituent bits?) submitted by /u/SubnetDelta [link] [comments]

Why do planets and moons tend to have orbits within a single plane, whereas some galaxies are relatively globular? Posted: 22 Sep 2016 02:46 PM PDT submitted by /u/xaplexus [link] [comments]

Is it possible to have a magnet where 100% of the domains point towards the same direction? Posted: 22 Sep 2016 10:40 AM PDT Like how you can reorganize which direction the atoms in a screwdriver face with a magnet. Is it possible to reorganize all of the atoms such that every atom faces towards the same direction? Can it occur naturally? submitted by /u/coatstain [link] [comments]

How dangerous is it to handle Tritium? Posted: 22 Sep 2016 01:08 PM PDT If tritium was spilled on exposed skin, is it an immediate trip to the hospital? For context, I'm asking the question because I recently purchased jewelry with tritium vials inside of it and was curious of the potential risks if the vial ever broke on me. submitted by /u/PM_YOUR_NICOLAS_CAGE [link] [comments]

Why is the Cape floristic region so small, what makes it a separate floristic region from the rest of South Africa, and why are there no similarly small regions elsewhere? Posted: 22 Sep 2016 08:06 AM PDT submitted by /u/MBpintas [link] [comments]

Genetics: Is The Only Way for a Man to Make a Detectable Genetic Contribution Through Successive Generations is to Have a Son, and A Woman to have a Daughter? Posted: 22 Sep 2016 10:10 PM PDT In studying genetics, it seems there are basically three standard variables of significance. The most obvious is mutations that endow an organism with enhanced reproductive success. The other two variables, on the other hand, are about continuity: that is, two fairly permeant aspects, that while they reflect past mutations, act as the twin pillars of conservation and inheritance, namely: the y chromosome and mitochondrial DNA. Men and women are often said to have different reproductive strategies. But, underlying that, is there a broader question? That is, for a women to be able to have made a detectable genetic contribution to her descendants in say, 6 generations, does not that require that she have daughters, who have daughters, who have daughters. That is, her largest genetic imperative rests on the reproduction of women more than sons if she is to maintain her detectable genetic signature in successive generations. Is this not also true for men, who to maintain a detectable link to their descendants, require that they have sons, who have sons, who have sons, etc. Men are related to each other on the test by virtue of their haplogroup. Women are related to each other by virtue of their mitochondrial DNA. Over a succession of generations, is if fair to say that the only way to really link people genetically to an identifiable ancestor is through these two stable genetic markers. Or at least, the most stable. All other parties, such as a man who has a daughter or a woman who has a son, certainly also contribute genetic information to their progeny. But might we not interpret that contribution as a more haphazard process, as part of a wider 'genetic lottery' of random assortment that serves to 'play roulette' and, by chance, come upon the next, mutated haplogroup or mitochondrial group that produces outsized reproductive advantages? We see a child as being a basically a 50/50 reflection of both parents. But, beyond the basic reproductive differences between men and women (men can have a thousand children, women only a dozen), does the sex of a child have a direct impact on the ability of the male or female to maintain a detectable genetic signature--in a sense, to more clearly reproduce its unique genetic markers? submitted by /u/frizzyhairdude [link] [comments]

What impact does our diet have on climate change? Posted: 22 Sep 2016 08:56 AM PDT How much does our diet effect climate change? I've read avoiding beef makes a difference, what about pork and poultry/eggs? Is the impact of dairy cows the same as those I get my tasty steaks from? submitted by /u/biscuitsncheese [link] [comments]

Does a van de graaf generator make you positive or negative? Posted: 22 Sep 2016 03:44 PM PDT I'm really hoping for some sources here if possible. I've been taught using van de graaf generator that the belt is taking away electrons from the dome and whatever is in contact with the dome. Which I thought would leave the dome positive and you positive, making Hair repel from each other. Recently some stuff I read said it was adding electrons to the dome, making it negative charge. I've done research and seem to be finding both answers the more I dig, even while searching site:edu Can any one help me out with an answer and a solid source where I can see this explanation. Thanks so much submitted by /u/fightsfortheuser [link] [comments]

Why are melanocytes found in the heart and bones? Posted: 22 Sep 2016 09:36 AM PDT I know the function of melanocytes in the epidermis, but why are they found in deeper tissues? submitted by /u/5cience_mama [link] [comments]

What is "silicone" cookware made of? Isn't silicone a silvery, crystalline metal? Posted: 22 Sep 2016 09:01 PM PDT submitted by /u/aitigie [link] [comments]

How do vibrations without changes in dipole moment occur? Posted: 22 Sep 2016 11:16 AM PDT I'm confused. Here's what's confusing me: If a molecule only changes its vibrational state when it absorbs energy. And it can only absorb energy from radiation when it leads to a change in the molecule's dipole moment, how the shit do vibrations that don't lead to changes in the dipole moment occur? I actually have more questions on this but I'll start here. submitted by /u/NewToUni [link] [comments]

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