How does the gate bias in a Tunnel Field Effect Transistor align the conduction band of the intrinsic region with the valence band of the P region?

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• How does the gate bias in a Tunnel Field Effect Transistor align the conduction band of the intrinsic region with the valence band of the P region?
• Can someone explain why current lags voltage by 90 degrees in an inductor and leads by 90 degrees in a capacitor?
• Is it possible to skydive on the moon? If so, at what height?
• What is the total linear momentum of the universe?
• Is there any correlation between spoken language and genetic jaw and mouth muscles? Would speaking one language over generations produce different mouths with enough time?
• Does the existence of tectonic plates mean less fossils??
• Charged particles emit synchrotron radiation when accelerated. Do the constituent quarks in a neutron also produce this radiation?
• What properties of different materials make them adept at being exo or endothermic?
• What makes burning coal more efficient than solar energy? How is it able to power entire cities vs solar power? Why is one preferred over the other?
• What planetary conditions, other than those we have on Earth, could support life?
• Does practicing a language before sleep improve its retention/consolidation?
• In group dynamics, what are the factors determining if external pressure leads to stronger internal resolve or dissolving/splitting up?
• Are the ocean waves around the world really different?
• If the Uncertainty Principle prohibits us from measuring the precise position of a particle, how can we ever "collapse" that particle's probability wave?
• Is it possible to make baking soda (sodium bicarbonate) from organic matters?
• What specific properties make an object edible/digestible?
• How much have our differances in food preference been shaped by history, evolution?
• Is there a physical limitation on how fast a signal can get from one part of the body to anotner? Or even thought for that matter? If so, how do you train to get faster? I may have phrased this poorly.
• Have traditional cancer treatments, such as chemotherapy and surgical excision, improved in the past few decades?
• Is it possible for a murderer to have PTSD caused by them murdering someone?
• Speed of air entering an evacuated tube?
• Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology
• What is the physical difference between conduction and convection?
• Would balls placed randomly on a smooth rotating planet tend to roll toward the equator?

How does the gate bias in a Tunnel Field Effect Transistor align the conduction band of the intrinsic region with the valence band of the P region? Posted: 21 Jul 2016 03:45 AM PDT I understand that once aligned, the electrons can tunnel through the boundary, but I don't understand how the applied voltage at the gate "aligns" the two bands. submitted by /u/bling1523 [link] [comments]

Can someone explain why current lags voltage by 90 degrees in an inductor and leads by 90 degrees in a capacitor? Posted: 21 Jul 2016 01:42 AM PDT I can prove these to myself through equations but I don't have an intuitive idea of why it does that? and intuitively explain why it has to be by 90 degrees? And also if you are feeling extra nice how this links to reactive power in the power system? submitted by /u/20j2015 [link] [comments]

Is it possible to skydive on the moon? If so, at what height? Posted: 20 Jul 2016 05:49 PM PDT If the moon has 1/6th the gravity of the earth, could you skydive at a lower level than on earth? Recreational skydiving height on earth is usually 10,000 feet (3,050 meters). At what height would you float away upon 'jumping?' submitted by /u/J_for_Jules [link] [comments]

What is the total linear momentum of the universe? Posted: 21 Jul 2016 06:59 AM PDT If momentum is conserved in all closed systems, then what is thought to be the total momentum of the universe? My intuition says that it should be zero because anything else seems to imply that the universe was moving at the big bang and that it's center of mass is moving now. If this is not the case, what are other implications of this? submitted by /u/Nowhere_Man_Forever [link] [comments]

Is there any correlation between spoken language and genetic jaw and mouth muscles? Would speaking one language over generations produce different mouths with enough time? Posted: 21 Jul 2016 03:11 AM PDT I ask this as I was watching a documentary and I noticed that the Japanese in it spoke using muscles I don't normally see being used in English. I noticed too that they had a more pronounced upper lip (which appears to be used more in the language). submitted by /u/Sir_Whisker_Bottoms [link] [comments]

Does the existence of tectonic plates mean less fossils?? Posted: 20 Jul 2016 07:49 PM PDT So the way tectonic plates work is that one slides under another, right? So would that mean that certain fossils in particular areas would have been sucked down with the plates... Or is it a much deeper level of the planet that is getting pulled down? submitted by /u/kotopaz [link] [comments]

Charged particles emit synchrotron radiation when accelerated. Do the constituent quarks in a neutron also produce this radiation? Posted: 21 Jul 2016 07:22 AM PDT When a charged particle undergoes acceleration, it emits synchrotron radiation. It seems to stand to reason that a single quark would also exhibit this characteristic, so what about a neutron? A neutron has no charge overall, but the three quarks that make up a neutron are all charged. submitted by /u/ThermosPotato [link] [comments]

What properties of different materials make them adept at being exo or endothermic? Posted: 21 Jul 2016 07:07 AM PDT I was thinking about this for quite a bit recently. For example, what about the coolant in a car makes it good at being a good or what makes water a good insulator? submitted by /u/Funky_Ducky [link] [comments]

What makes burning coal more efficient than solar energy? How is it able to power entire cities vs solar power? Why is one preferred over the other? Posted: 21 Jul 2016 03:03 AM PDT Three follow-ups and the main body question: 1) What makes burning coal more efficient than solar energy? 2) How is burning coal able to power entire cities vs. solar energy? 3) What makes burning coal preferrable to solar these days and finally... 4) What would it take to put an entire city like new york on Solar Energy? EDIT: Not sure if I have the right flair. Please tell me which one I should change it to if this is the wrong one. submitted by /u/BreAKersc2 [link] [comments]

What planetary conditions, other than those we have on Earth, could support life? Posted: 21 Jul 2016 06:37 AM PDT Obviously we have planetary conditions that can support life on Earth. Liquid water, habitable zone within the galaxy and solar system are all things that seem necessary. However, I was curious if there were some lesser known ways of supporting life. I have heard Steven Hawking discuss breathable methane as opposed to breathable oxygen. I'm looking for answers similar to this theory. submitted by /u/bigmombajackson [link] [comments]

Does practicing a language before sleep improve its retention/consolidation? Posted: 21 Jul 2016 06:32 AM PDT So I understand sleep is important in memory retention/consolidation. I recently started using Babbel (a language learning app), so I'm wondering if it would be useful to use the app right before going to sleep? submitted by /u/rowan771 [link] [comments]

In group dynamics, what are the factors determining if external pressure leads to stronger internal resolve or dissolving/splitting up? Posted: 21 Jul 2016 06:28 AM PDT submitted by /u/reeelfunny [link] [comments]

Are the ocean waves around the world really different? Posted: 21 Jul 2016 02:33 AM PDT I am very interested in traditional boats. I wrote my masters on them. My thesis was about what shaped a specific kind of traditional boat. I discussed tools, materials, aestethics and strict functionality when it comes to use and local conditions. Almost everywhere I ran into the "fact" that the waves and seas are different. That boats from a certain area have a given hull shape because it's the best in the kind of seas they have there. Along the Norwegian coast for instance, you have the boat fromt he northern part compared to the boat from the western area. I have sailed in both areas and I can't understand how the waves are different. There are very local conditions that might be uniqe. There might be shoals out in the ocean near the mouth of a fjord for instance, but that only makes a special wave system in a very certain spot. A fisherman would usually have to sail over a much bigger and varied area, wich would then pretty much be the same in the north and in the south of Norway - as well as pretty much every else on the planet where the coast and the bottom of the ocean is somewhat similar! I understand and know from first hand experience how waves behave different depending on the depth and at what angles and how strong the wind and the current is. But can seas really be that much different, and why? Salidity? Temperature? submitted by /u/Peddyslate [link] [comments]

If the Uncertainty Principle prohibits us from measuring the precise position of a particle, how can we ever "collapse" that particle's probability wave? Posted: 21 Jul 2016 05:15 AM PDT The Probability Wave collapses when we measure a particle's precise position (or does it? I may be misunderstanding), so doesn't the Uncertainty Principle prohibit us from doing so? Sorry, middle schooler here; my understanding of physics is lacking. submitted by /u/adeebchowdhury [link] [comments]

Is it possible to make baking soda (sodium bicarbonate) from organic matters? Posted: 21 Jul 2016 01:02 AM PDT I heard that you can make calcium hydroxide from seashells and charcoal. That's about it. Is it possible to make sodium bicarbonate from seashells and ashes (from burning firewood)? submitted by /u/RespublicaCuriae [link] [comments]

What specific properties make an object edible/digestible? Posted: 21 Jul 2016 12:23 AM PDT Bonus questions: Is there a difference between edible and digestible? Does something have to be organic to be edible? What is the best example of something that is displays minimal amounts of edible properties, but is still technically edible? submitted by /u/Toasted_Roast [link] [comments]

How much have our differances in food preference been shaped by history, evolution? Posted: 20 Jul 2016 11:29 PM PDT Just looking at the vast differences in cuisine around the world and some of the tasteful native foods that other cultures aren't fond of such as Rakfisk (salted and fermented fish from norway,) durian fruit, kimchi, tripe, vegemite, cheeses from Italy containing live mites and maggots, etc. For example, would somebody of Aboriginal Australian heratige who grew up in Canada be as likely to enjoy Poutine as much as a native Canadian? submitted by /u/Lkjhgb [link] [comments]

Is there a physical limitation on how fast a signal can get from one part of the body to anotner? Or even thought for that matter? If so, how do you train to get faster? I may have phrased this poorly. Posted: 20 Jul 2016 07:13 PM PDT submitted by /u/Ohthehumanityofit [link] [comments]

Have traditional cancer treatments, such as chemotherapy and surgical excision, improved in the past few decades? Posted: 20 Jul 2016 11:28 AM PDT Improved as in increasing survival rate or decreasing increasing remission rates. I ask because, with all of these new cancer treatments going around and being researched, we might be overlooking how much our usual standard of care has improved. Also, has it improved for specific cancers among others? Like Head and Neck cancer, Melanoma, or hard to remove cancers like brain tumors? submitted by /u/lulzcakes [link] [comments]

Is it possible for a murderer to have PTSD caused by them murdering someone? Posted: 20 Jul 2016 12:18 PM PDT submitted by /u/rackcitytits [link] [comments]

Speed of air entering an evacuated tube? Posted: 20 Jul 2016 08:06 AM PDT Over on /r/hyperloop is a discussion of a video about catastrophic failure of the Hyperloop tube. The nut of the issue is this: Picture a 2-meter diameter tube many kilometers long -- say, 100km to have a number. The tube is evacuated to a pressure of 1 millibar. Now picture a catastrophic failure (an explosion, say) which instantly severs the tube. Air rushes into the tube at some speed. At what speed does the pressure front move along the tube? Speed of sound? Higher? Lower? submitted by /u/fernly [link] [comments]

Ask Anything Wednesday - Economics, Political Science, Linguistics, Anthropology Posted: 20 Jul 2016 08:05 AM PDT 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]

What is the physical difference between conduction and convection? Posted: 20 Jul 2016 09:26 AM PDT I know the textbook definitions, but what is the real difference between these forms of heat transfer? It seems like, in any instant, moving air would collect heat by conduction, but then is replaced by the next "lump" of air. Is there an additional effect that convection adds or is it just conduction to a moving fluid? submitted by /u/KingLarryXVII [link] [comments]

Would balls placed randomly on a smooth rotating planet tend to roll toward the equator? Posted: 20 Jul 2016 08:34 AM PDT submitted by /u/TheSpanishImposition [link] [comments]

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AskScience AMA Series: I'm Eric Noel Muñoz and I helped in the eradication of "Killer Algae" on the coast of Southern California. Environmentalist and Brady Bunch actor Christopher Knight will be joining me. Ask Us Anything!

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• AskScience AMA Series: I'm Eric Noel Muñoz and I helped in the eradication of "Killer Algae" on the coast of Southern California. Environmentalist and Brady Bunch actor Christopher Knight will be joining me. Ask Us Anything!
• Why are planets not tidally locked with the sun?
• Is it possible to strengthen your muscles (the obviously visible ones, like biceps and abdominal) by only contracting them?
• Is 'not not and not not not' the same as 'not'?
• Is the effectiveness of fast-mimicking diets (or intermittent water fasting) well established for the prevention of some chronic diseases?
• Why does redshift/blueshift occur? Gravity bends light (gravitational lensing) so could something also stretch/tighten it?
• Why can't iodine (I2) be mixed with water?
• Why do we see only one side of the moon ever?
• How is blood flow directed within the brain?
• What's the longest single cell in the world?
• Do countries that don't use the Latin alphabet, like China and Japan, have their own coding languages?
• Quantum entanglement and the so called spooky action at a distance: what makes it different from two deterministic correlated events?
• How do ALVAC and AIDSVAX work to prevent HIV infection?
• Why do our brains have certain parts for doing certain things, and why are those parts located where they are?
• How tall could humans feasibly build a building on earth at this point in time?
• Is it possible to replace someones blood type if you slowly drain all their blood and replace all the bone marrow with new marrow etc?
• Why does my Lifestraw (filtration system) filter out harmful bacteria, but not salty water?
• I read that whitening toothpastes use a slight abrasive, which can eat away at enamel. Is a whitening toothpaste that claims to protect enamel lying then, or is that possible?
• What would it look like at the edge of the universe?
• If you were to get a particle accelerator that you could open instantly so the sped up particle lets say a proton could fly out and you collided it with a thick plate of metal what would happen, and would the results vary for different metals?
• What were the treatments for Syphilis prior to antibiotics?
• How much force does it take to split or fuse an atom? If I could magically grip and align an atom or 2 in my hands, could my bare hands split or fuse it?
• Are there cases where a common ancestor, as well as descendants, have existed simultaneously?
• If an atom were at absolute zero, would it be possible to know both its position and velocity?

AskScience AMA Series: I'm Eric Noel Muñoz and I helped in the eradication of "Killer Algae" on the coast of Southern California. Environmentalist and Brady Bunch actor Christopher Knight will be joining me. Ask Us Anything! Posted: 20 Jul 2016 05:00 AM PDT Hi, my name is Eric Noel Muñoz. A life-long ocean lover with a degree in physical geography from San Diego State University, I wrote about how Agua Hedionda Lagoon in northern San Diego County eradicated an invasive species of seaweed between 2000 and 2006 which was most likely released from a home aquarium. This strain of Caulerpa taxifolia (nicknamed "Killer Algae" for good reason) is a mutant genetic clone of a natural counterpart; it has no predators, keeps fish away, grows rapidly and smothers reef or rocky substrate, and reproduces via fragmentation. First detected in the Mediterranean Sea and now in over half a dozen countries there, it also is in Southern and Eastern Australian wetlands. As a Carlsbad city planner and later lagoon foundation president, I had many roles in the eradication effort and outreach efforts from 2000 through 2015. The book is a personal account which covers the issue from many angles and includes time spent in New Zealand, Australia, Croatia, France, and Monaco. Our local effort—the only known successful eradication of an invasive marine species—is put into a global context and outlines the success of our rapid response that combined funding, science, and policy. You can check out my book Caulerpa Conquest: A Biological Eradication on the California Coast on Amazon or directly from the publisher, Open Books Press. You can watch my 3-minute TED animated video here: Attack of the Killer Algae - Eric Noel Muñoz For my AMA session, I will be joined as necessary by a consulting biologist/scuba diver who was part of the eradication team, Robert Mooney, Ph.D, of Marine Taxonomic Services in San Marcos, CA. Christopher Knight, environmental activist and Peter Brady from The Brady Bunch will be on from 12:30 to 1:00 PST and can chime in on any questions about his work with community outreach regarding Caulerpa taxifolia. I look forward to your questions on everything from our efforts in California to the situation in the Mediterranean and in Australia, plus whatever else you might think up. I'll be on from noon to 2 p.m. PST. AMA! submitted by /u/AskScienceModerator [link] [comments]

Why are planets not tidally locked with the sun? Posted: 20 Jul 2016 03:40 AM PDT We only see one side of the moon because it's tidally locked with the earth. Why do other orbiting bodies not tidally lock with their centers? (i.e. planets and the sun) submitted by /u/Neotheo [link] [comments]

Is it possible to strengthen your muscles (the obviously visible ones, like biceps and abdominal) by only contracting them? Posted: 19 Jul 2016 09:54 PM PDT If for example, you just sit through classes with your hands on your desk and your arms in a constant flex... assuming you are determined enough not to let loose, is it possible to strengthen them this way? submitted by /u/51707 [link] [comments]

Is 'not not and not not not' the same as 'not'? Posted: 20 Jul 2016 06:58 AM PDT Dunno if /r/asklogic exists is frequented or is populated but I was wondering; there can be 'not' and there can be 'not not' but can there also be a third of 'not not and not not not' or is the third the same as the first or second? submitted by /u/twurk [link] [comments]

Is the effectiveness of fast-mimicking diets (or intermittent water fasting) well established for the prevention of some chronic diseases? Posted: 19 Jul 2016 08:36 PM PDT And is there strong evidence to suggest the body selectively targets unfit cells for removal on these diets? A few papers I found: A Periodic Diet that Mimics Fasting Promotes Multi-System Regeneration, Enhanced Cognitive Performance, and Healthspan A Diet Mimicking Fasting Promotes Regeneration and Reduces Autoimmunity and Multiple Sclerosis Symptoms Autophagy and Aging: The Importance of Maintaining "Clean" Cells And some documentaries: Catalyst: Live Long Die Young Eat, Fast And Live Longer With Michael Mosley submitted by /u/UncertainHeisenberg [link] [comments]

Why does redshift/blueshift occur? Gravity bends light (gravitational lensing) so could something also stretch/tighten it? Posted: 19 Jul 2016 08:02 PM PDT I have long thought that the redshift/blueshift stuff was light being subjected to the rigors of space over light years. If it can observably change directions, surely it can stretch or contract given the right environmental conditions IMO. What would that imply given what we know about the current size of the universe? submitted by /u/Dusbowl [link] [comments]

Why can't iodine (I2) be mixed with water? Posted: 20 Jul 2016 07:40 AM PDT According to the Iodine MSDS, it says iodine must never be mixed with water, i would like a simple explanation as to why it is like that. Thank you and please. Edit: Im on mobile, so I cant see flairs, sorry about that. submitted by /u/TheDartron123 [link] [comments]

Why do we see only one side of the moon ever? Posted: 19 Jul 2016 05:37 PM PDT I know the rotational period and period of revolution for the moon are the same, but why is this the case? What caused them to be the same? submitted by /u/woofwoofwolf [link] [comments]

How is blood flow directed within the brain? Posted: 19 Jul 2016 09:47 PM PDT Neural imaging scans work by showing us how different parts of the brain get different amounts of blood flow depending on how much they're being used at the moment. So, somehow, different parts of the brain with a lot of activity get more blood, and parts with less activity get less. But ... how? How is this blood flow directed within the brain? How do different veins or arteries know to open or constrict in time to keep up with the brain's rapidly changing demands? Is there some structure in the brain that basically controls all of this, or is it somehow distributed to all the different parts, each one taking what it needs? submitted by /u/the_ocalhoun [link] [comments]

What's the longest single cell in the world? Posted: 19 Jul 2016 08:40 PM PDT I'm assuming it's probably going to be a neuron in a blue whale ... but how long is it? submitted by /u/the_ocalhoun [link] [comments]

Do countries that don't use the Latin alphabet, like China and Japan, have their own coding languages? Posted: 19 Jul 2016 01:45 PM PDT Do they have their own languages they have built? Thanks. submitted by /u/Skipthechip [link] [comments]

Quantum entanglement and the so called spooky action at a distance: what makes it different from two deterministic correlated events? Posted: 19 Jul 2016 06:39 PM PDT I tried asking a (probably stupid) question on the AMA with the quantum researchers that was held yesterday, but I guess I was too late to the party, so here it goes: What is the difference between a particle being in a superposition of states and simply having it's current state unknown to us (but determined)? To give an example, we could theoretically create a machine that splits a ball in half, sending one half spinning clockwise and the other anticlockwise (randomly). If we find one half of the ball, we would be able to know that the other half is spinning in the opposite direction. However, I understand that those two parts of this microscopic ball aren't entangled. How different to this system are entangled particles and why? Is it related to bell's theorem (if so, I'll probably need a very simplified explanation on that)? submitted by /u/daemienus [link] [comments]

How do ALVAC and AIDSVAX work to prevent HIV infection? Posted: 20 Jul 2016 05:45 AM PDT Recently CNN published a news that a new vaccine regiment of ALVAC and AIDSVAX has managed to score a modest rate of vaccination of about 30% at the end of the trial in Thailand, and now the researchers are going to run another trial in South Africa (source: CNN). Being very curious, I looked for paper. To my disappointment, most papers give the highlight on statistical analysis, much less on the molecular virology of the vaccines. Those papers are: Vaccination with ALVAC and AIDSVAX to Prevent HIV-1 Infection in Thailand, NEJM (10.1056/NEJMoa0908492) Statistical Interpretation of the RV144 HIV Vaccine Efficacy Trial in Thailand: A Case Study for Statistical Issues in Efficacy Trials, JID (10.1093/infdis/jiq152) Safety and Reactogenicity of Canarypox ALVAC-HIV (vCP1521) and HIV-1 gp120 AIDSVAX B/E Vaccination in an Efficacy Trial in Thailand, PLOS One (10.1371/journal.pone.0027837) If anyone could provide the molecular biology aspect of the vaccines, ALVAC and AIDSVAX, that would be extremely helpful! submitted by /u/aifrantz [link] [comments]

Why do our brains have certain parts for doing certain things, and why are those parts located where they are? Posted: 19 Jul 2016 11:08 PM PDT submitted by /u/Blenhurp [link] [comments]

How tall could humans feasibly build a building on earth at this point in time? Posted: 19 Jul 2016 10:01 AM PDT submitted by /u/CocaineChronicles [link] [comments]

Is it possible to replace someones blood type if you slowly drain all their blood and replace all the bone marrow with new marrow etc? Posted: 19 Jul 2016 01:08 PM PDT submitted by /u/Grakin99 [link] [comments]

Why does my Lifestraw (filtration system) filter out harmful bacteria, but not salty water? Posted: 19 Jul 2016 07:47 PM PDT If I was to venture a guess, it would be because the salt attaches to the H2O molecules, where bacteria does not actually bind to them. However I'm not really sure so I thought I'd ask! Thanks in advance! submitted by /u/Aistadar [link] [comments]

I read that whitening toothpastes use a slight abrasive, which can eat away at enamel. Is a whitening toothpaste that claims to protect enamel lying then, or is that possible? Posted: 19 Jul 2016 08:27 AM PDT submitted by /u/Ipquarx [link] [comments]

What would it look like at the edge of the universe? Posted: 19 Jul 2016 04:37 PM PDT If the universe is expanding in all directions at the speed of light then what would it look/be like to stand at the very edge? Would you witness anything happening as the universe expanded or would it seem as if nothing new had formed or changed at all? submitted by /u/atomicfilm [link] [comments]

If you were to get a particle accelerator that you could open instantly so the sped up particle lets say a proton could fly out and you collided it with a thick plate of metal what would happen, and would the results vary for different metals? Posted: 19 Jul 2016 02:10 PM PDT submitted by /u/shabalaba51 [link] [comments]

What were the treatments for Syphilis prior to antibiotics? Posted: 19 Jul 2016 07:41 PM PDT Before antibiotics, how did physicians combat syphilis? I'm particularly curious about how they did in the 19th and early 20th century. submitted by /u/TheFlyin-Hawaiian [link] [comments]

How much force does it take to split or fuse an atom? If I could magically grip and align an atom or 2 in my hands, could my bare hands split or fuse it? Posted: 19 Jul 2016 10:20 AM PDT Let's assume that my fingers can magically grip atoms, and that I can align them with perfect precision. How much strength would it take to rip one apart or combine two atoms? How much would the required force vary for different elements to split or fuse them? Bonus question, would the energy released from the reaction be visible or perceptible to me? How much would the energy released vary from the fission or fusion or different atoms? submitted by /u/Xasten [link] [comments]

Are there cases where a common ancestor, as well as descendants, have existed simultaneously? Posted: 19 Jul 2016 07:27 PM PDT So in evolution, two species might share common ancestry. What I am wondering is if there are times where these common ancestors continue to exist after their descendants have "evolved" into their current form. If so, are there any more extreme cases, where it might have gone back many ascendants? submitted by /u/Dreadsin [link] [comments]

If an atom were at absolute zero, would it be possible to know both its position and velocity? Posted: 19 Jul 2016 11:48 AM PDT submitted by /u/thermochromatic [link] [comments]

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If somebody across from me on a large field shot a gun while holding a walkie talkie with the speak button on, would you hear the sound first on the walkie talkie or from the sound itself?

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• If somebody across from me on a large field shot a gun while holding a walkie talkie with the speak button on, would you hear the sound first on the walkie talkie or from the sound itself?
• Why is it that human brains are able to "auto-pilot" certain commands, such as play the piano, video games, sports etc... But when we start to think about it, we completely lose rhythm?
• Do lucid dreamers have a better chance of waking up from a coma?
• How does a fan cool down a room?
• Do light particles weigh anything?
• When was it known that Jupiter was a gas giant? What did scientists think it might be like before then?
• What does the electric field for an electron "look like" in quantum mechanics?
• Why does Dyslexia exist?
• How does Google know my location even when I am using a laptop or a device with no GPS?
• What dictates the throttle ranges of rocket engines?
• What does your skin use to detect temperature changes?
• How will a curveball behave in vacuum?
• Will a morbidly obese mother birth an obese child, and if so, can it be prevented by switching diets?
• A question about the effects of gravity on small objects in space?
• [Physics] Why isn't Lithium used instead of Uranium in fission reactors?
• A few math questions based off Fermat's last theorem?
• Why does the digital root of every multiple of *n*-1 equal *n*-1 when working in base *n*?
• [Physics] How was it discovered that crystals have a lattice formation?
• How and why does temperature affect the resistivity of metal wires?
• Does such an element, which would go from gaseous state to solid as the temperature rises, exist?
• What conditions optimize cardiovascular recovery?
• What is the maximum limit for massive solid planets?
• Why do enantiomers rotate light?

If somebody across from me on a large field shot a gun while holding a walkie talkie with the speak button on, would you hear the sound first on the walkie talkie or from the sound itself? Posted: 19 Jul 2016 01:58 AM PDT So it was sports day yesterday at the school I volunteer at and I had this thought while watching the races getting started on the other side of the track. If a race was started with the starting button and the person with the start gun was holding a walkie talkie (radio) with the speak button activated, would I hear the sound first, or the projection of sound coming from the radio I was holding? I know nothing about waves and frequencies so I'm sorry if this is a dumb question. I'm training to be a music teacher so it isn't really my forte. submitted by /u/DCFC3112 [link] [comments]

Why is it that human brains are able to "auto-pilot" certain commands, such as play the piano, video games, sports etc... But when we start to think about it, we completely lose rhythm? Posted: 18 Jul 2016 06:38 AM PDT Examples of this : Stepmania by Staiain Arcade basketball player Intense badminton ralley submitted by /u/Fidel-Sarcastro [link] [comments]

Do lucid dreamers have a better chance of waking up from a coma? Posted: 18 Jul 2016 08:14 AM PDT submitted by /u/bfern00 [link] [comments]

How does a fan cool down a room? Posted: 19 Jul 2016 02:09 AM PDT like i understand how a ceiling fan can push hot air where you want i (heat rises etc.) but how does a desk fan which simply circulates air make a room feel colder? does it? is this just an illusion? submitted by /u/Cheesmanjc [link] [comments]

Do light particles weigh anything? Posted: 19 Jul 2016 01:26 AM PDT If they do, does a collective of particles exert a strong enough force to push an object. How much of a force does our sun exert on humans? submitted by /u/InfoNazi [link] [comments]

When was it known that Jupiter was a gas giant? What did scientists think it might be like before then? Posted: 19 Jul 2016 05:31 AM PDT I'm guessing it was known for longer than I would expect that Jupiter was large and light for its size. Gas giants are so different from earth, though, I figure classical scientists might not have had it figured out. When did science figure it out? Who did? What were some older theories (based in science, not mythology)? submitted by /u/inlinefourpower [link] [comments]

What does the electric field for an electron "look like" in quantum mechanics? Posted: 18 Jul 2016 09:10 PM PDT I think I have a fairly decent layman's/conceptual understanding of QM. One thing I don't yet understand is the interaction of fields and particle positions. Classically, the electric field produced by an electron is described as vector field where each vector points at the electron, and each vector's length is inversely proportional to the square of its distance from the particle. OTOH, QM says a particle doesn't have a definite position, and instead describes the particle as a function that maps each position in space to the probability that the particle exists at that position. Given that, how does QM describe the electric field produced by an electron, since the electron's position is indefinite? Given the wavefunction for an electron, in which direction do the field's vectors point? Is the field's value at any given point in space actually a function mapping every possible vector to a probability (analogous to the wavefunction mapping every position to a probability)? Or is it a single vector, sort of a weighted average across all the possible positions for the electron? Follow up question: How does a particle's wavefunction interact with a field? Is the entire wavefunction of the particle deformed by the field? E.g. if we pretend the wavefunction is bread dough spread out on a counter, then the field would be a baker pushing/pulling the dough around on the counter, creating heaps and valleys (areas of higher/lower probability). Then, could wavefunction collapse be understood as some sort of process that causes the field to be deformed into something close to a Dirac delta function? Thanks for any answers you might have! submitted by /u/sch1phol [link] [comments]

Why does Dyslexia exist? Posted: 18 Jul 2016 09:44 PM PDT Preface: I'm not saying dyslexia doesn't exist, I'm asking about how it does. Humans have only had written language for a very short period of time and literacy has only just recently become widespread in the past few centuries. How is it that there is a hereditary literacy disability? Does dyslexia have geographical or genetic group of origin like say, cystic fibrosis. submitted by /u/READERmii [link] [comments]

How does Google know my location even when I am using a laptop or a device with no GPS? Posted: 19 Jul 2016 07:16 AM PDT I have been wondering everytime I open my browser with location services enabled, it knows my location with a high accuracy. How does it manage that? I know my IP address plays a part but, I am sure you cannot just know exactly where I am using my IP address.Thanks in advance ya'll. submitted by /u/iLackLogik [link] [comments]

What dictates the throttle ranges of rocket engines? Posted: 18 Jul 2016 09:55 AM PDT I was reading a controls paper that was modeling the Apollo LM lander, and it mentions on Page 14 that "The [LM] engine was not throttleable in the range from 60% to 90%." Does anyone know why at this specific range? I thought that throttleability was usually based on a lower-bound, like 20% to 100%, where you can't throttle below 20% because the engine will flame-out. But this implies that you can throttle on either side of that range, just not within it. submitted by /u/raddy13 [link] [comments]

What does your skin use to detect temperature changes? Posted: 19 Jul 2016 03:44 AM PDT The only difference between hot and cold objects to my knowledge is that the atoms/molecules inside the object are moving slower when it's cold and faster when it's hot. How does our skin detect the change in speed of something so small, or is there something I'm missing? submitted by /u/mrgreencannabis [link] [comments]

How will a curveball behave in vacuum? Posted: 19 Jul 2016 03:09 AM PDT Is it possible to throw a ball that will have a modified trajectory based on its angular momentum in a vacuum? Is the curving only due to air pressure? All the answers I found online indicate that it will not work in vacuum, but wouldn't it be the same principle as a gyroscope? An angular momentum vector that acts on the trajectory? submitted by /u/Mephisto6 [link] [comments]

Will a morbidly obese mother birth an obese child, and if so, can it be prevented by switching diets? Posted: 18 Jul 2016 11:27 PM PDT Additionally, would switching diets be dangerous for the mother? I'd understand if going from an extremely fat-rich diet for years to a nearly fat-free diet would be dangerous. And maybe one last thing, would a C-section still be possible, with all the excess fat on the belly? submitted by /u/Sabreling [link] [comments]

A question about the effects of gravity on small objects in space? Posted: 19 Jul 2016 02:58 AM PDT So let's assume that we have several household objects of varying size and density and we are observing them in the vacuum of outer space. Would the more massive objects show any signs of having gravity? Would the less dense objects begin to be attracted to the denser ones like it happens with stars/planets/everything else in space? I have an image in my mind of these objects sort of bunching together around the densest of them, in a similar way to how planets were initially formed from particles and other bodies of rock/ice etc. TL;DR: Do objects with mass create gravity regardless of their size? Would a bowling ball attract marbles in a vacuum as a result of its own (minuscule) gravity? submitted by /u/BlackKnightGlaive [link] [comments]

[Physics] Why isn't Lithium used instead of Uranium in fission reactors? Posted: 19 Jul 2016 06:19 AM PDT I was looking at the binding energy curve per nucleon the other day on a whim and noticed that it seemed like not only was the binding energy for Lithium was lower than Uranium, but its release of energy would be higher than Uranium (eyeballing a ∆E~1.7 MeV for Lithium vs ∆E~1 MeV for Uranium using the graph on this page for reference: https://en.wikipedia.org/wiki/Nuclear_binding_energy). That being said, why is it Uranium was chosen over something like Lithium, which I'm guessing is probably more abundant as well. submitted by /u/TRMac_Attack [link] [comments]

A few math questions based off Fermat's last theorem? Posted: 18 Jul 2016 04:00 PM PDT Hi Askscience, I was watching a documentary on Fermat's Theorem and it stated that it has been shown that:   an=bn+cn   has no solution where n is greater than 2. However, by doing a little guess and check I found that by adding a 3rd base term that the equation becomes solvable for n=3 or in generic terms:   an=bn+cn+dn   with the simplest solution being:   63=53+43+33   My question is this also solvable for n=4? If not does adding another term alleviate this problem? And then if that's true does the number of base terms needed to solve the equation for exponent (n) equal to the n you are looking for e.g. n=4 means you need 4 terms on the right hand side. Is there any use for this in mathematics? Thanks! submitted by /u/PM_ME_FIT_TITS [link] [comments]

Why does the digital root of every multiple of *n*-1 equal *n*-1 when working in base *n*? Posted: 19 Jul 2016 01:11 AM PDT submitted by /u/skine09 [link] [comments]

[Physics] How was it discovered that crystals have a lattice formation? Posted: 18 Jul 2016 02:22 PM PDT submitted by /u/yosimba2000 [link] [comments]

How and why does temperature affect the resistivity of metal wires? Posted: 18 Jul 2016 09:09 PM PDT submitted by /u/Ldogzilla [link] [comments]

Does such an element, which would go from gaseous state to solid as the temperature rises, exist? Posted: 19 Jul 2016 02:33 AM PDT I am wondering whether there is an element in the periodic table which would go in reverse through the three stages of matter, gas to solid, as the temperature rises? submitted by /u/-jack [link] [comments]

What conditions optimize cardiovascular recovery? Posted: 18 Jul 2016 08:20 AM PDT Biologically/scientifically speaking, what can one do to create the optimal conditions for cardiovascular recovery after years of bad habits, smoking, and sedentary activity (e.g. supplements like CoQ10 and L-Carnitine, dietary changes, etc.) to supplement the obvious increase in activity and smoking cessation? submitted by /u/thoughtacademy [link] [comments]

What is the maximum limit for massive solid planets? Posted: 18 Jul 2016 08:34 PM PDT So for those who don't know, massive solid planets are possible: https://en.wikipedia.org/wiki/Exoplanet#Massive_solid_planets Since Gas planets turn into Brown dwarfs at 13 Jupiter masses, do massive solid planets (or Rock Giants) that lack hydrogen envelopes not turn into Brown dwarfs? Or do they become a strange boiling super massive ball? submitted by /u/LeoBattlerOfSins_X84 [link] [comments]

Why do enantiomers rotate light? Posted: 18 Jul 2016 11:40 PM PDT What about the mirrored structure allows them to rotate light in equal but opposite degrees? submitted by /u/yosimba2000 [link] [comments]

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