Discussion: Veritasium's newest YouTube video on simulating quantum mechanics with oil droplets! |
- Discussion: Veritasium's newest YouTube video on simulating quantum mechanics with oil droplets!
- Pilot wave theory, a theory involving highly complex and non-linear differential equations, is fully equivalent to matrix mechanics, a theory involving only linear differential equations. Does this have implications for our ability to solve non-linear differential equations?
- Were hands on criticality experiments ever considered safe?
- Can someone explain Maxwell's Equations?
- How steep is the Mariana Trench?
- If Quantum mechanics describe the smallest known particles and how they behave, why wouldn't these mechanics control how physics work on a larger scale?
- If conventional current, is opposite of the electron flow, then is it true that ground doesn't necessarily dissipate charge, but is an unlimited source of electrons?
- What's the tallest we could build a skyscraper with current technology?
- Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
- Serious, simple yes or no question: Could a torch light accurately be referred to as a "photon cannon"?
- In females usually only one of both X chromosomes is active, the other one is completly silenced through a process called Lyonization. Now if this is the case, then what exactly is the problem in a XO situation (Turner-syndrome)?
- How are smelting furnaces designed to withstand the heat during operation?
- How much does glucose consumption vary from brain to brain and how much could it effect overall metabolism?
- Would it be possible to see the sun rising over the horizon of Earth from space?
- Why does the bond angle go from 104.5 to 109.5 when water freezes to form ice?
- How do Feynman-Diagrams work?
- Would sending a heavy metal into a star's core cause it to die?
- How do websites know your language?
| Discussion: Veritasium's newest YouTube video on simulating quantum mechanics with oil droplets! Posted: 02 Nov 2016 08:05 AM PDT Over the past ten years, scientists have been exploring a system in which an oil droplet bounces on a vibrating bath as an analogy for quantum mechanics - check out Veritasium's new Youtube video on it! The system can reproduce many of the key quantum mechanical phenomena including single and double slit interference, tunneling, quantization, and multi-modal statistics. These experiments draw attention to pilot wave theories like those of de Broglie and Bohm that postulate the existence of a guiding wave accompanying every particle. It is an open question whether dynamics similar to those seen in the oil droplet experiments underly the statistical theory of quantum mechanics. Derek (/u/Veritasium) will be around to answer questions, as well as Prof. John Bush (/u/ProfJohnBush), a fluid dynamicist from MIT. [link] [comments]  |
| Posted: 03 Nov 2016 02:51 AM PDT |
| Were hands on criticality experiments ever considered safe? Posted: 03 Nov 2016 02:18 AM PDT I was reading a Wikipedia article yesterday about the deaths of Harry Daghlian and Louis Slotin, at Los Alamos during the early days of the Manhattan project. https://en.m.wikipedia.org/wiki/Demon_core The experiments they were conducting seem ludicrously unsafe, to the point were accidents were inevitable. The article says that the accident prompted the researchers to design remote testing equipment for future use. Prior to the accidents, was this the standard approach for this type of experiment? I can see that plutonium decays into alpha particles, which are relatively easy to shield against and a gap of air could have been enough to protect them from the spontaneous radiation but the whole point of the experiment was to produce more neutrons. Were the researchers arrogant, ignorant, or just plain stupid? It sounds like Slotin was arrogant but Daghlian's exposure was a completely avoidable accident. I can't find a good source of information on the rationale for the experiments online and hope that someone knows. Thanks in advance. [link] [comments]  |
| Can someone explain Maxwell's Equations? Posted: 03 Nov 2016 12:46 AM PDT Reference Image: https://goo.gl/o7vnv6 I am interested in the Integral form specifically. Can someone explain what each equation means, and how it can be used/applied? Bonus Question: I can't for the life of me figure out what ds represents [link] [comments]  |
| How steep is the Mariana Trench? Posted: 02 Nov 2016 07:44 PM PDT If the oceans were suddenly drained and I was standing in say Challenger's Deep. What would I see, spectacular canyon walls going up around me, or would it just be a long sloping plain? How would the scenery vary around the trench? [link] [comments]  |
| Posted: 02 Nov 2016 05:38 PM PDT |
| Posted: 02 Nov 2016 07:32 PM PDT |
| What's the tallest we could build a skyscraper with current technology? Posted: 03 Nov 2016 08:09 AM PDT Assuming an effectively unlimited budget but no not currently in use technologies how high could we build an office building. Note I'm asking about an occupied building, not just a mast. What would be the limiting factor? [link] [comments]  |
| Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Posted: 02 Nov 2016 08:04 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Biology, Chemistry, Neuroscience, Medicine, Psychology 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! [link] [comments]  |
| Posted: 02 Nov 2016 05:24 PM PDT |
| Posted: 02 Nov 2016 02:54 PM PDT In both situations the cell end up with only one active but healthy X-chromosome - how is this not the same situation? [link] [comments]  |
| How are smelting furnaces designed to withstand the heat during operation? Posted: 02 Nov 2016 04:25 PM PDT In particular I was watching some industry advert on electric arc furnaces. I thought, "how cool is that?" Then I thought "How the hell does the crucible not melt?" I'm guessing there's some kind of fancy chemical treatment on the inside and a cooling system on the outside. [link] [comments]  |
| Posted: 02 Nov 2016 12:32 PM PDT Alternatively: could person A who is mentally 'slow' have a slow metabolism whereas person B that is mentally 'busy' have a fast metabolism? [link] [comments]  |
| Would it be possible to see the sun rising over the horizon of Earth from space? Posted: 02 Nov 2016 04:55 PM PDT Today I watched a live feed of the Earth from the ISS with the camera facing the horizon. When the ISS entered the dark side of the Earth, it switched to the camera pointing straight at Earth so the horizon wasn't visible during sunrise. I was wondering if this was because it's not possible to see the sun rise over the horizon or if it was for some other reason? [link] [comments]  |
| Why does the bond angle go from 104.5 to 109.5 when water freezes to form ice? Posted: 02 Nov 2016 02:51 PM PDT |
| Posted: 02 Nov 2016 01:15 PM PDT We just introduced Feynmandiagrams in my particle physics course and i go get the basics. currently we are only doing them for QED so there are only a couple of rules.(like 1 vertex) but i have trouble understanding the difference between t and u channel. Both Møller scattering and Compton scattering have Diagrams with the u channel, but bhabha scatterin doesnt. is that because the electron and positron cant cross eachother without annihilating or am i taking the picture too seriously there? also does the s channel exist for anything else than particle-antiparticle scattering? https://en.wikipedia.org/wiki/Mandelstam_variables https://en.wikipedia.org/wiki/M%C3%B8ller_scattering [link] [comments]  |
| Would sending a heavy metal into a star's core cause it to die? Posted: 02 Nov 2016 04:11 PM PDT I was watching Science Channel and a point was made that the production of Iron is what causes the death of a large star. If we were to send iron to the core of a star, could we essentially force the commencement of the death of that star? [link] [comments]  |
| How do websites know your language? Posted: 02 Nov 2016 05:05 PM PDT I understand that they can usually access things like your language settings and stuff but: Tried accessing reddit in incognito mode today (for reasons) on my phone which I bought in the uk, which is completely in English (including the keyboard), signed in with a gmail.co.uk account, on a uk broadband etc. and reddit pulled up the login page in my language which freaked me out a little. IIRC, this also happened on a couple other sites. How do they know? [link] [comments]  |
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