If my speed is 100 km/h and my destination is 100 km away and then I move 90 km/h if it's 90 km away. 80 km/h if it's 80 km away. Keep on slowing to match the distance. When will I arrive?

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• If my speed is 100 km/h and my destination is 100 km away and then I move 90 km/h if it's 90 km away. 80 km/h if it's 80 km away. Keep on slowing to match the distance. When will I arrive?
• What changes in a child's digestive system at around one year of age?
• What is Helium-3 and what can it be used for?
• How is classical mechanics recovered in the quantum canonical commutation relation?
• How do the scientists estimate mass of galaxies based on their brightness and colour?
• Does the curve of your eyeball have an impact on what you see?
• If something accelerates in the direction of its orbit, will the average speed increase or decrease?
• Are there any particles that don't interact with eachother at all?
• Quantum computer hardware - how is it fabricated and how does it function?
• Why is cold fusion bullshit?
• Why does an electron and a proton have the same magnitude of charge even though the electron is a lot smaller than the proton?
• Where do neutrons come from? If the whole universe started as hydrogen which is just a proton and an electron, where did the neutrons come from when they fused into heavier elements?
• Some vegetables will cause sparks in a microwave. I have read that this will damage the magnetron, but I cannot find a description of the mechanism that would cause such damage. Is it true?
• Question: Which Genus(es) of mammals have the largest global range?
• If the ISS didn't move but just hovered at its present altitude, would it still be zero gravity there?
• Why do propeller planes often have their wings located above the fuselage while jets have the wings located in the middle or below the fuselage?
• How does a perforated eardrum repair on its own?
• Are there any materials that become softer when cooled and harder when heated?
• Since the perceived gravitational force at the center of the Earth is nearly nothing, is the center of the Earth experiencing time flowing faster relative to the surface of the Earth?
• Are the strong and weak forces consistent with relativity?
• What's the physical meaning of the constants in Cauchy's Equation?
• Are names only a human thing?
• Arguments aside on whether quantum computing is possible or not, what sorts of cyber security issues would arise from data being stored in a quantum superposition?

If my speed is 100 km/h and my destination is 100 km away and then I move 90 km/h if it's 90 km away. 80 km/h if it's 80 km away. Keep on slowing to match the distance. When will I arrive? Posted: 22 Apr 2017 09:07 AM PDT submitted by /u/PM_ME_UR_ANKLES_GIRL [link] [comments]

What changes in a child's digestive system at around one year of age? Posted: 23 Apr 2017 01:48 AM PDT There's lots of advice/rules in regards to feeding a baby. For example no honey because of the risk of botulism, no added sugar/salt etc. Most rules last until 1 year of age. What changes after the one year mark? Is it just the body mass that's now enough? Or does the digestive system mature? Or do babies need to "assemble" a certain amount of bacteria to handle grown-up food? submitted by /u/ntrontty [link] [comments]

What is Helium-3 and what can it be used for? Posted: 23 Apr 2017 05:01 AM PDT I was scrolling about and then i saw this article that said India (?) was going to mine Helium-3 from the moon. Then i realized that i had no clue what Helium-3 is. PS, I have no idea if chemistry is the right tag. submitted by /u/HELLJUS [link] [comments]

How is classical mechanics recovered in the quantum canonical commutation relation? Posted: 23 Apr 2017 06:40 AM PDT Classical physics emerges in the limit as hbar goes to zero. The quantum canonical commutation relation is [x,p]=ihbar while the classical one is [x,p]=1 so hbar going to zero clearly doesn't recover classical transformations. What's going on here? submitted by /u/BAOUBA [link] [comments]

How do the scientists estimate mass of galaxies based on their brightness and colour? Posted: 22 Apr 2017 01:17 PM PDT I've recently watched YouTube video called Dark Matter's Not Enough by The Royal Institution and I heard there the explanation of dark matter. Presenter said that dark matter idea came from discrepancy between two estimates: there seems to be 5x more mass in galaxies based on their rotation speed than when estimating mass based on their brightness. I know a little bit of science and I could image measuring mass based on rotation speed but you would need to know how large that galaxy really is, so that I imagine is a bit of a challenge. The bit that blew my mind was estimating galaxies mass based on star brightness. How such thing can even be possible and how can estimate measurement error for that? The 5x times discrepancy suggest to me that there might be huge error in there that is not accounted for, meaning that measurement may be incredible inaccurate. submitted by /u/st1hy [link] [comments]

Does the curve of your eyeball have an impact on what you see? Posted: 22 Apr 2017 07:29 PM PDT submitted by /u/bitcleargas [link] [comments]

If something accelerates in the direction of its orbit, will the average speed increase or decrease? Posted: 22 Apr 2017 06:17 PM PDT I understand that accelerating will result in a wider eclipse. But will the average speed be higher, lower or the same? submitted by /u/wgroenning [link] [comments]

Are there any particles that don't interact with eachother at all? Posted: 23 Apr 2017 07:07 AM PDT The phrase 'particle x interacts with particly y' is often used, and that got me thinking.. Do some combination of particles never interact with one another? submitted by /u/RazomOmega [link] [comments]

Quantum computer hardware - how is it fabricated and how does it function? Posted: 22 Apr 2017 09:37 AM PDT In comparison to regular computers that are made of transistors (semiconductors+metal), and function based on electric current or voltage, what are the physical means of generating qubits and reading/writing them? submitted by /u/spacejockey8 [link] [comments]

Why is cold fusion bullshit? Posted: 22 Apr 2017 01:16 PM PDT I tried to read into what's known so far, but I'm a science and math illiterate so I've been trying to look for a simpler explanation. What I've understood so far (please correct me if I'm wrong) is that the original experiment (which if I'm not mistaken, was called the Fleischmann-Pons experiment) didn't have any nuclear reaction, and it was misleadingly media hyped in the same way the solar roadways and the self filling water bottle have been, so essentially a bullshit project that lead nowhere and made tons of false promises of a bright utopian future but appealed to the scientific illiterate. Like me! But I try to do my own research. I'm afraid I don't know anything about this field though, so I'm asking you guys. Thanks to any of you that take your time to aid my curiosity and to the mods for approving my post, if they do! Have a nice day. [link] [comments]

Why does an electron and a proton have the same magnitude of charge even though the electron is a lot smaller than the proton? Posted: 22 Apr 2017 04:55 PM PDT submitted by /u/poppypuppiesp [link] [comments]

Where do neutrons come from? If the whole universe started as hydrogen which is just a proton and an electron, where did the neutrons come from when they fused into heavier elements? Posted: 22 Apr 2017 01:48 PM PDT submitted by /u/JustSeanAgain [link] [comments]

Some vegetables will cause sparks in a microwave. I have read that this will damage the magnetron, but I cannot find a description of the mechanism that would cause such damage. Is it true? Posted: 22 Apr 2017 10:08 AM PDT submitted by /u/Isthatyourfinger [link] [comments]

Question: Which Genus(es) of mammals have the largest global range? Posted: 22 Apr 2017 04:48 PM PDT I want to compare the MC1R sequence from different mammalian species that are somewhat localized at various geographic regions. I would like to look at species that belong to the same genus (a genus of which has good global coverage). Any help would be appreciated, thanks. submitted by /u/goodayniceday [link] [comments]

If the ISS didn't move but just hovered at its present altitude, would it still be zero gravity there? Posted: 22 Apr 2017 02:02 PM PDT submitted by /u/Travelertwo [link] [comments]

Why do propeller planes often have their wings located above the fuselage while jets have the wings located in the middle or below the fuselage? Posted: 22 Apr 2017 04:50 PM PDT submitted by /u/cajunrouge [link] [comments]

How does a perforated eardrum repair on its own? Posted: 22 Apr 2017 06:47 AM PDT Struggling to find literature on how a perforated eardrum manages to heal on its own accord. Does it constantly regenerate over time anyway? submitted by /u/Worthinho [link] [comments]

Are there any materials that become softer when cooled and harder when heated? Posted: 22 Apr 2017 11:35 AM PDT Materials made of iron for example become very soft and malleable when heated but extremely brittle and hard when cooled -- are there any materials that have the opposite effect? submitted by /u/HighMans [link] [comments]

Since the perceived gravitational force at the center of the Earth is nearly nothing, is the center of the Earth experiencing time flowing faster relative to the surface of the Earth? Posted: 22 Apr 2017 06:46 AM PDT submitted by /u/chakalakasp [link] [comments]

Are the strong and weak forces consistent with relativity? Posted: 22 Apr 2017 03:03 PM PDT I know that electromagnetism is consistent with relativity so that no changes are needed to the Maxwell's equations to make them true in any reference frame, not so for Newton's laws so they had to be fixed. This raises the question if the other two forces are consistent with relativity as the electromagnetism is, or if they are not and they need to be fixed to. I have been looking for a straight forward answer in wikipedia, physics forums and other sites, but I can't find it. Thanks a lot submitted by /u/Frigorifico [link] [comments]

What's the physical meaning of the constants in Cauchy's Equation? Posted: 22 Apr 2017 04:41 PM PDT I'm taking a course in Electrodynamics, and we recently studied Cauchy's Equation for the refractive index, n = A + B/(l2). I got that A is a dimensionless constant, and that B has unit of area, but what do they mean? How are they related to the properties of the material? submitted by /u/UndercoverDoll49 [link] [comments]

Are names only a human thing? Posted: 22 Apr 2017 10:53 AM PDT I'm not sure if this even has a scientific explanation, but I'm very curious. Are humans the only species that has names for things/other living beings? submitted by /u/brightscales08 [link] [comments]

Arguments aside on whether quantum computing is possible or not, what sorts of cyber security issues would arise from data being stored in a quantum superposition? Posted: 22 Apr 2017 06:47 PM PDT submitted by /u/WizardSleeves118 [link] [comments]

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Is my stomach ever completely empty? And about how much fluid is in there without and food or drink?

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• Is my stomach ever completely empty? And about how much fluid is in there without and food or drink?
• Why is osmium (slightly) blue?
• What is really going on when I "sleep wrong" and wake up with a stiff neck?
• Are there "quantum calculations" that can make a quantum system take as long as an average supercomputer to solve?
• How is it possible that the strong coupling constant is greater than 1?
• What is the difference between kinetic energy and momentum?
• If light is a transverse wave, shouldn't all observers agree on the direction a travel for a photon?
• Is it a coincidence that the great majority of tectonic plate boundaries are in the ocean?
• When nucleons join together to form a nucleus the total mass is greater than their individual masses (the mass defect). How is the additional mass distributed between each of the nucleons?
• How entangled particles(electrons/photons) are created? And does any natural process is cosmos yield entangled particles?
• How does proton-antiproton annihilation work?
• Why can't we (or don't we) connect prosthetics to the nerves of the limb it attaches to?
• Is there a point in history that humans (or our genetic ancestors) became carnivorous?
• Are there any remnants of planets in our solar system that existed before our sun?
• What is the point of the Bonferroni adjustment?
• [Astronomy] If You Were In the Middle of the Boötes Void, Would You Be Able to See Yourself/Anything or Tell If You Were Moving?
• What is most different about the English language today compared to English of George Washington's time, such as that in the Constitution and/or Declaration of Independence?
• How do soundwaves react to temperature?
• How do HEAT (High Explosive Anti-Tank) rounds know when they are approaching the target?

Is my stomach ever completely empty? And about how much fluid is in there without and food or drink? Posted: 21 Apr 2017 05:55 PM PDT I'm curious as to what the neutral stomach fullness is. Like if I don't eat or drink for about 4 hours, what is in my stomach? I'm assuming it's some kind of acid but what's the amount that would be in there? Thanks. submitted by /u/sleepless_mc [link] [comments]

Why is osmium (slightly) blue? Posted: 21 Apr 2017 05:45 PM PDT Certain scientific papers state that osmium is a blue-coloured metal. I understand that gold and copper is distinctively coloured due to relativity (Although I am a bit hazy with copper because its nucleus is much lighter). But why is osmium blue? It is not prominently blue so I am quite certain it is not about relativity, but what could it be? submitted by /u/Aethemeron [link] [comments]

What is really going on when I "sleep wrong" and wake up with a stiff neck? Posted: 21 Apr 2017 11:52 AM PDT submitted by /u/TheGreenShepherd [link] [comments]

Are there "quantum calculations" that can make a quantum system take as long as an average supercomputer to solve? Posted: 21 Apr 2017 08:33 PM PDT Also, will quantum computers make cryptocurrency obsolete? Is it possible the government already has quantum computers but hasn't revealed them to keep the advantage? submitted by /u/1xexpertx1 [link] [comments]

How is it possible that the strong coupling constant is greater than 1? Posted: 21 Apr 2017 11:38 PM PDT I can't wrap my mind around this at all. Basically for strong interactions, the more complex the interaction, the more likely it is to happen. But you can always make an interaction more complex by adding more propagators which make it more likely to happen. Doesn't this make an average strong interaction an infinite order interaction? Does is max out eventually and the probability starts to decrease? submitted by /u/BAOUBA [link] [comments]

What is the difference between kinetic energy and momentum? Posted: 21 Apr 2017 11:32 PM PDT I appreciate they're calculated using different formulas, but I just can't visualise how they're different in my head submitted by /u/light_dude38 [link] [comments]

If light is a transverse wave, shouldn't all observers agree on the direction a travel for a photon? Posted: 22 Apr 2017 01:54 AM PDT In the classic thought experiment that illustrates time dilation, you have 2 mirrors one light second apart. Observer A says "Yup, it takes one second for the light to travel between these mirrors". Observer B says "But wait, from my perspective, Observer A and the mirrors are traveling at .99C! It took like 1.4 seconds by my watch (because the light had to travel one light second, plus the distance that the mirrors moved in that time period), therefore time must be slower for Observer A". My gut tells me that the Observers would NOT agree on the direction the wave was propagating, but I can't understand why. Does the wave appear to vibrate differently to the two Observers? Shouldn't they be able to agree what direction the light was vibrating in and thus be able to say what direction the light "was really going in"? submitted by /u/nightmedic [link] [comments]

Is it a coincidence that the great majority of tectonic plate boundaries are in the ocean? Posted: 21 Apr 2017 02:11 PM PDT Seems odd I guess that there arent continents being torn in half other than a few examples of small areas like California and east Africa. Why aren't there land equivelants to the oceanic ridges, huge mountain ranges of activity and land formation? submitted by /u/nilhaus [link] [comments]

When nucleons join together to form a nucleus the total mass is greater than their individual masses (the mass defect). How is the additional mass distributed between each of the nucleons? Posted: 21 Apr 2017 08:46 PM PDT I understand that when nucleons join energy is converted to mass. But if an elementary proton or neutron has a fixed mass, where is this new, extra mass located? Is it divided up equally? Does it exist between the nucleons like glue? Or does it just hover randomly around the nucleus? submitted by /u/ten_mile_river [link] [comments]

How entangled particles(electrons/photons) are created? And does any natural process is cosmos yield entangled particles? Posted: 21 Apr 2017 12:13 PM PDT submitted by /u/pandhersaab27 [link] [comments]

How does proton-antiproton annihilation work? Posted: 21 Apr 2017 12:51 PM PDT Annihilation (matter-antimatter) made me think. Electron and Positron annihilate producing 2 gamma ray photons. I thought that this concept could also be applied to proton-antiproton annihilation. However, due to the quarks,gluons a proton contains (and the anti-versions of the antiproton), I've been reading different things. Some say that the proton-antiproton annihilation produces only gamma ray photons, some say that other particles like mesons are produced. What is the correct process? (If there is a "correct" process of course) submitted by /u/Tesmkay [link] [comments]

Why can't we (or don't we) connect prosthetics to the nerves of the limb it attaches to? Posted: 21 Apr 2017 01:53 PM PDT So to be more precise. Say someone looses their hand. The nerves controlling the muscles of the hand are still there in the arm. Thus we should be able to connect sensors to these nerves so that when the person tries to move their hand the sensors pick up the signals and send them to the prosthesis. However I've never been able to find any prosthesis that seems to do anything like this. So my conclusion is we cannot do this. Now why is that so? submitted by /u/plebhazard [link] [comments]

Is there a point in history that humans (or our genetic ancestors) became carnivorous? Posted: 21 Apr 2017 11:07 AM PDT submitted by /u/Dr_Mikhail_Arkov [link] [comments]

Are there any remnants of planets in our solar system that existed before our sun? Posted: 21 Apr 2017 11:37 AM PDT How would we know, and how big can they be? How many solar births and deaths have they been through? submitted by /u/frenzyboard [link] [comments]

What is the point of the Bonferroni adjustment? Posted: 21 Apr 2017 09:17 PM PDT Hi guys, I'm currently taking a Stats course and my professor, unfortunately, skimmed over this topic. It seems important seeing as how there are several lecture slides on it, but none of them are making sense with me. Could someone explain the Bonferroni Adjustment's purpose? Why is it useful if it makes it more difficult to reject the null hypothesis? submitted by /u/-Narble- [link] [comments]

[Astronomy] If You Were In the Middle of the Boötes Void, Would You Be Able to See Yourself/Anything or Tell If You Were Moving? Posted: 21 Apr 2017 11:31 AM PDT I'm sitting here at my desk and have had a rush of questions about voids in space... If there's no stars within any reasonable distance - would the space around you be completely pitch black? If so, could a traveler within the void be able to tell if they were moving - if so, moving in respect to what? What would space appear to look like as you began to approach the edge of a void region from its center? Would it be small specks gradually emerging to something like the space we see from earth? Bonus question: I know they're called black holes, but really they're black spheres right? submitted by /u/amchaudhry [link] [comments]

What is most different about the English language today compared to English of George Washington's time, such as that in the Constitution and/or Declaration of Independence? Posted: 21 Apr 2017 07:24 AM PDT submitted by /u/fromRonnie [link] [comments]

How do soundwaves react to temperature? Posted: 21 Apr 2017 09:49 AM PDT Imagine a room that has a microphone and a speaker. The same sound would be played in the same room. The only difference would be a different temperature. Would the microphone pick up exactly the same data? submitted by /u/vallegs [link] [comments]

How do HEAT (High Explosive Anti-Tank) rounds know when they are approaching the target? Posted: 21 Apr 2017 10:47 AM PDT Articles about HEAT tank rounds explain in detail how they manage to penetrate the enemy tanks' armor. But, they never specify the method used to determine the distance to target (which has to be calculated precisely for the round to do its job). So how do they do it? Do they use lasers? Radars? Simple timed fuses? submitted by /u/ApeshitMadMuscovite [link] [comments]

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

AskScience AMA Series: We are the organizers of Celebrating Einstein, a month-long interdisciplinary science outreach event honoring Einstein's theories and achievements. Ask Us Anything!

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• AskScience AMA Series: We are the organizers of Celebrating Einstein, a month-long interdisciplinary science outreach event honoring Einstein's theories and achievements. Ask Us Anything!
• Why is gold soft?
• What is difference between advection and convection?
• Can light make a sound?
• Would shooting down a nuclear missile result in a nuclear explosion?
• Why does the ISS maintain a radial-in attitude?
• Why don't electrons cross the plates of charged capacitors?
• How are radio waves 1s and 0s?
• What wavelengths does sulfur emit as electrons jump between energy levels?
• How do we know when the Yellowstone National Park Super volcano last erupted?
• Is there uncertainty in the spins of bound electrons in orbitals?
• How does color index relate to a star's "Habitable Zone"?
• Why are cardiac valves from pigs not rejected by human bodies?
• Can everything become a liquid gas or solid?
• Is heat transfer through metals non-linear?
• If I steep a tea bag in hot water, will it eventually reach equilibrium and stop diffusing flavor and caffeine?
• When measuring radiation, what is the difference between "mrem" and "cpm" and which is more important in determining exposure?
• Do plants with naturally red leaves have different chemical processes for photosynthesis than green plants, or is the color difference unrelated?
• Is infinity a number or concept?
• How does a low atmospheric pressure affect an air flow of a vacuum pump?
• Is the Pacific Ocean calmer than the Atlantic, and why or why not?
• By what means do geneticists correlate biological data with geography?

AskScience AMA Series: We are the organizers of Celebrating Einstein, a month-long interdisciplinary science outreach event honoring Einstein's theories and achievements. Ask Us Anything! Posted: 21 Apr 2017 04:00 AM PDT Hi Reddit! We are some of the many organizers for Celebrating Einstein, a month-long, interdisciplinary outreach event that includes spoken lectures, danced lectures, readings, interviews with physcists, symphony performance, field trips for West Virginia schools, artistic interpretations of Einstein's theories, and more. Over 100 years ago, Einstein predicted the existence of gravitational waves, and we are just beginning to detect them now. Our goal is to communicate the beauty and significance of Einstein's theory of General Relativity, its predictions, and the recent detection of gravitational waves announced only last year with the public. Check out our website for a full list of the events we've organized, and we'd love to talk about the science, the outreach, the organization, or anything! We have four organizers from the physicist/astronomer side joining us today: Sarah Burke-Spolaor is a professor of astronomy at WVU. She was a postdoctoral researcher in Socorro, NM, working with the National Radio Astronomy Observatory Very Large Array. She works on electromagnetic counterparts to gravitational wave sources and fast radio bursts. Kristina Islo is a graduate student in the Leonard Parker Center for Gravitation, Cosmology, and Astrophysics at the University of Wisconsin Milwaukee. As a member of the North American Nanohertz Observatory for Gravitational Waves, she studies the gravitational wave astrophysics possible with pulsar timing array experiments as well as the statistical methods used to detect signals from supermassive binary black holes. Michael Lam is a postdoctoral researcher in the WVU Physics and Astronomy Department and a member of the Center for Gravitational Waves and Cosmology. He is currently working with the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration. His current area of research is on characterization of NANOGrav's gravitational wave detector, an array of pulsars distributed throughout the galaxy. He received his Ph.D. from Cornell University in 2016. Laura Sampson is a postdoctoral researcher at Penn State University. She received her doctorate at Montana State University and worked previously at the Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) at Northwestern University. She is one of only five nationwide recipients of the 2015 L'Oreal USA "For Women in Science" Fellows. We'll be on starting at 12 PM ET (17 UT), so ask us anything! Celebrating Einstein was originally produced by Montana State University and the eXtreme Gravity Institute. The West Virginia Celebrating Einstein event is sponsored through NSF award number 1458952, the WVU Department of Physics & Astronomy, the WVU School of Theatre & Dance, the West Virginia Space Grant Consortium, and the WVU Eberly College of Arts & Sciences. submitted by /u/AskScienceModerator [link] [comments]

Why is gold soft? Posted: 21 Apr 2017 05:11 AM PDT Vague I know but is it because of the atomic structure? Tungsten a much much "harder" material is 5 electrons away from gold and have the same electron configuration. I noticed that the grouping on the periodic table shows similar hard/soft properties of elements by the group number. I thought this had more to do with electron structure than physical properties? submitted by /u/hansca04 [link] [comments]

What is difference between advection and convection? Posted: 21 Apr 2017 01:36 AM PDT submitted by /u/iitvaranasi [link] [comments]

Can light make a sound? Posted: 21 Apr 2017 06:55 AM PDT Is it possible to turn on a light with such intensity as to cause a vibration that could be heard? I figure light is made of particles and sound is just compressions of matter. So could light possibly make a sound? submitted by /u/astorml [link] [comments]

Would shooting down a nuclear missile result in a nuclear explosion? Posted: 20 Apr 2017 06:25 PM PDT Regarding a successful missile defense system, intercepting a nuclear missile launch. submitted by /u/Bcjustin [link] [comments]

Why does the ISS maintain a radial-in attitude? Posted: 20 Apr 2017 11:50 AM PDT In almost every photo of the International Space Station, you can clearly see that the cupola module is always pointing towards the earth. That means that the ISS maintains a constant attitude relative to Earth and that it's spinning at 1 rotation/orbit (90 min) I understand that it doesn't need any energy to maintain this low angular speed, but I assume that it does create some potentially avoidable problems: • Small centrifugal accleration on the outer most modules. • EVA astronauts will maintain the linear velocity of the spin, thus moving away from the station after they exit. • Docking: I just can't wrap my head around how stuff could dock to the ISS if it's spinning at 4°/min (unless it stops spinning for docking maneuvers). So why is it spinning? Just to maintain a view for the cupola at all times? Does it stop spinning during EVAs and docking? submitted by /u/All_HaiI_Satan [link] [comments]

Why don't electrons cross the plates of charged capacitors? Posted: 20 Apr 2017 08:51 PM PDT So I'm taking physics now and I still have trouble understanding this. If there is an electric field across the plates, why wouldn't the electrons just cross the space in between the plates instead of going the long route on the wire to the opposite plate. I'm also confused as to why one plate is positive and the other is negative in the first place. Shouldn't the like charges want to repel each other and hence not accumulate on a plate to begin with? Apologies in advance if this is common knowledge I just always have been confused by this. submitted by /u/stars_bitch67 [link] [comments]

How are radio waves 1s and 0s? Posted: 20 Apr 2017 02:37 PM PDT Looking at wifi, how is binary transmitted via radio waves? Is there a difference in amplitude? Phase changes? This page has some good info, just curious how wifi works specifically; visuals would be helpful if you've got em submitted by /u/kcaselli66 [link] [comments]

What wavelengths does sulfur emit as electrons jump between energy levels? Posted: 20 Apr 2017 07:38 PM PDT I know that the electrons go between the various energy levels and they emit photons at exact wavelengths, but what wavelengths does it emit? All the sources I've found have either been really inexact or super technical. submitted by /u/Algebra-Theorem [link] [comments]

How do we know when the Yellowstone National Park Super volcano last erupted? Posted: 20 Apr 2017 09:09 PM PDT I know that scientists say that it should erupt every 600,000 years but it hasn't erupted for 640,000 years, how do we know that it erupted 640,000 years ago? submitted by /u/vampirechick1991 [link] [comments]

Is there uncertainty in the spins of bound electrons in orbitals? Posted: 20 Apr 2017 03:49 PM PDT As per the Heisenberg uncertainty, we can't know the exact spin of a particle in all directions since different spin components are non-commuting. But in such a case, why do we say that electrons in orbitals occupy strictly either spin-up or spin-down states? I realize it is possible to fully know the spin in exactly one direction, but is it not possible that the electrons in an orbital might have spins that are not exactly parallel (nor antiparallel) with each other? submitted by /u/CallMeDoc24 [link] [comments]

How does color index relate to a star's "Habitable Zone"? Posted: 20 Apr 2017 10:34 AM PDT It seems intuitive that (for a given luminosity) the hotter a star, the further out its habitable zone would be. Is this an accurate correlation? submitted by /u/IntestinalFracking [link] [comments]

Why are cardiac valves from pigs not rejected by human bodies? Posted: 20 Apr 2017 06:37 AM PDT The problem with the body rejecting organs/tissues is huge and mostly entails the usage of pharmaceuticals preventing the rejection. Why can be transplant cardiac valves from pigs without having a rejection (in most cases)? submitted by /u/Basti8592 [link] [comments]

Can everything become a liquid gas or solid? Posted: 20 Apr 2017 09:23 AM PDT submitted by /u/Capoonthefifth [link] [comments]

Is heat transfer through metals non-linear? Posted: 20 Apr 2017 01:40 PM PDT When a metal heats up from a contact with a heat source. does the rate at which that heat moves through change as temperature increases? submitted by /u/MegaJackUniverse [link] [comments]

If I steep a tea bag in hot water, will it eventually reach equilibrium and stop diffusing flavor and caffeine? Posted: 20 Apr 2017 09:07 AM PDT How long would that take? submitted by /u/Kenley [link] [comments]

When measuring radiation, what is the difference between "mrem" and "cpm" and which is more important in determining exposure? Posted: 20 Apr 2017 08:51 AM PDT I've noticed that most modern geiger counters can be switched from rems to sieverts to counts per minute. When attempting to measure radiation exposure for workers, which of these measurements should be used? What is the difference? submitted by /u/CommanderCougs [link] [comments]

Do plants with naturally red leaves have different chemical processes for photosynthesis than green plants, or is the color difference unrelated? Posted: 20 Apr 2017 09:49 AM PDT submitted by /u/WhiteRaven22 [link] [comments]

Is infinity a number or concept? Posted: 20 Apr 2017 04:08 AM PDT submitted by /u/Singularity000 [link] [comments]

How does a low atmospheric pressure affect an air flow of a vacuum pump? Posted: 20 Apr 2017 10:42 AM PDT My science club is planning on releasing a high-altitude balloon with a vacuum pump on board to collect some samples. The pump we're planning to use is the Boxer 3KD model. The technical data says it has a maximum free flow of 18l/min. Of course the air pressure in stratosphere is really low so I was wondering how will it affect the flow of the air in the pump? Is there any way to calculate it? submitted by /u/ScoiaTael16 [link] [comments]

Is the Pacific Ocean calmer than the Atlantic, and why or why not? Posted: 20 Apr 2017 07:50 AM PDT I remember hearing as a kid that the Pacific Ocean was named such because it was more peaceful than the Atlantic. Is that true? Or is it just an odd story. Also, can one ocean be calmer than the other? I am thinking of "calmer" as being less storms, smaller waves, and other conditions that would make sailing easier on one compared to the other. submitted by /u/wierddude88 [link] [comments]

By what means do geneticists correlate biological data with geography? Posted: 20 Apr 2017 10:33 AM PDT How do geneticists connect DNA data with geographic points? How can geneticists see migration patterns and correlate them with locations on the globe? submitted by /u/theleakyprophet [link] [comments]

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