Are any two electrons, or other pair of fundamental particles, identical? |
- Are any two electrons, or other pair of fundamental particles, identical?
- Are photons taking longer to travel due to expansion of universe?
- Will a black hole eventually "fill up" or does more "stuff" going in increase its gravitiational pull and therefore make it bigger?
- What happens to compounds with unstable isotopes after decay?
- Is light mass-less? (other Qs)
- If humans could digest petrol/gas how much energy could we gain from it? How much would it take to make us go for a day?
- Ask Anything Wednesday - Engineering, Mathematics, Computer Science
- Given that a black hole can be completely described by mass, spin, and charge, would it even be possible to discern a black hole with equal mass spin and charge as an electron from an actual electron?
- Can planetary rings cause tidal forces on their planet?
- What is the difference between Hox Genes, Regulatory Genes and Gene Switches?
- If force is equal to mass times acceleration, why will getting hit by a fast-moving car destroy me but a glacier's slower but much more massive hit just unnoticeably nudge me along?
- If a calorie is a unit of energy (to take 1 litre of water up 1 degree celcius), how can there be zero calorie Energy Drinks? Are they a scam?
- What is actually an electromagnetic field?
- Why does the d sub-level split its energy when ligands are bound to transition metals?
- How does our body tolerance to a certain compounds work?
- Do doublecortin-positive cells have to match the host to be effective in healing the brain?
- Why can we see the colours of lasers?
- What makes topical analgesics work in some places but not others?
- Do we know for certain that nutrinos do not travel faster than light?
- How does a pigeon's vision and balance switch between walking mode and flying mode?
| Are any two electrons, or other pair of fundamental particles, identical? Posted: 17 Feb 2016 03:45 AM PST If we were to randomly select any two electrons, would they actually be identical in terms of their properties, or simply close enough that we could consider them to be identical? Do their properties have a range of values, or a set value? [link] [comments]  |
| Are photons taking longer to travel due to expansion of universe? Posted: 16 Feb 2016 06:30 AM PST As universe exapnds, so does distance between any two points (it's how I understand it, please correct me if I'm wrong). does that mean that photons have a longer distance to travel as it goes? [link] [comments]  |
| Posted: 16 Feb 2016 07:16 AM PST I know Hawking radiation can eventually disperse a black hole, but is this the only way a black hole can cease to exist? [link] [comments]  |
| What happens to compounds with unstable isotopes after decay? Posted: 17 Feb 2016 02:46 AM PST My chemistry knowledge is scarce, but for example: If PuO2, with plutonium 238 that decays into some other element that doesn't bond that well with oxygen (or simply loses a valence electron), what happens to that oxygen? Does this spawn oxygen ions? Would it be an endo- or exothermic reaction? [link] [comments]  |
| Is light mass-less? (other Qs) Posted: 17 Feb 2016 04:22 AM PST Does it lose energy as it moves? If it has mass, how does it not lose energy or speed over time? [link] [comments]  |
| Posted: 16 Feb 2016 06:11 AM PST |
| Ask Anything Wednesday - Engineering, Mathematics, Computer Science Posted: 17 Feb 2016 07:05 AM PST Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Engineering, Mathematics, Computer Science 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: 16 Feb 2016 11:21 AM PST |
| Can planetary rings cause tidal forces on their planet? Posted: 16 Feb 2016 11:02 AM PST Basically, assuming no "moon(s)" orbiting the planet, would planetary rings (such as those around Saturn) cause tidal forces on the planet, in lieu of a moon? [link] [comments]  |
| What is the difference between Hox Genes, Regulatory Genes and Gene Switches? Posted: 16 Feb 2016 12:59 PM PST I am having difficulty differentiating the three. Are Hox Genes and Gene Switches both Regulatory Genes or are they something different? My sources don't specify clearly enough. [link] [comments]  |
| Posted: 16 Feb 2016 10:53 AM PST Wouldn't that imply the amount of force applied by the car is much more than that of the glacier? Is there a factor like the change in my own acceleration or that the mass I should use is actually my own (and not that of the car's or glacier's) that I'm not accounting for? [link] [comments]  |
| Posted: 16 Feb 2016 11:58 AM PST |
| What is actually an electromagnetic field? Posted: 16 Feb 2016 09:35 AM PST We know what a gravitational field is: the curvature of space-time. However whenever I look for information of electromagnetic fields, the conclusion I get is that a charged particle can make other particles to move without touching them. I know that the answer for this is "the particles do touch each other because their magnetic fields touch" however, this always seemed to me an explanation as magical as the "invisible force working at distance" that Newton described to explain how gravity works. Einstein in the other hand, explained that there is not a force working at distance, but that gravitational fields are nothing but the curvature of space-time. Is there an explanation like this for electromagnetic fields? I mean, do we know what is actually happening to the space between the particles interacting through their electromagnetic fields? [link] [comments]  |
| Why does the d sub-level split its energy when ligands are bound to transition metals? Posted: 16 Feb 2016 07:57 AM PST I teach IB Chemistry HL and one of the required topics to teach is the spitting of the d-level orbitals when transition metals ions are bound to ligands. This is a topic I never learned myself in college and I don't like teaching something I do not know more in depth than what I am requiring of my students. I understand that the charges affect the differently shaped orbitals different affecting their energy levels but that is the extent of what I know. Can someone please explain or point me to some resources to fully understand what is happening here? Thank you! [link] [comments]  |
| How does our body tolerance to a certain compounds work? Posted: 16 Feb 2016 09:32 AM PST More precisely, I would like to know why paracetamol is not bound to tolerance, while caffeine is. How and why does our body adapt to these things? Or does not adapt. I was looking for this information on the worldwide intranet but could not find a proper answer... maybe reddit will help me :) [link] [comments]  |
| Do doublecortin-positive cells have to match the host to be effective in healing the brain? Posted: 16 Feb 2016 07:27 AM PST Trying to understand this TEDX. Wondering if the cells can be donated from another brain potentially. [link] [comments]  |
| Why can we see the colours of lasers? Posted: 16 Feb 2016 09:09 AM PST Why can we see lasers when they go through dense gases (and not with a naked eye)? Is it possible to change the colour of a laser by changing the gas you are using to see it? [link] [comments]  |
| What makes topical analgesics work in some places but not others? Posted: 16 Feb 2016 09:01 AM PST I got Salonpas pain relief patches because i have a stiff neck and a pull or something in my arm. On my neck I feel heat and cooling sensations but on my arm, I feel nothing. What's the difference? [link] [comments]  |
| Do we know for certain that nutrinos do not travel faster than light? Posted: 16 Feb 2016 04:04 PM PST I was watching Cosmos the other day and NdT was talking nutrinos. He explained that we were able to detect nutrinos from a supernova prior to arriving light from the explosion. He explained a theory that posited that the nutrinos were released at the speed of light a moment before everything else while everything else accelerated slowly within the star until reaching the surface and then accelerating to the speed of light. Thus giving the nutrinos a head start. My question is this: was the basis for this theory that the cosmic speed limit of light speed must be true and so nutrinos must have come out earlier, or have we independently verified that they were released earlier than the other stuff? My concern is that our limited ability to test nutrinos may cloud our reasoning and that they may exceed the speed of light. But that we aren't taking that into account in our research. Thanks! [link] [comments]  |
| How does a pigeon's vision and balance switch between walking mode and flying mode? Posted: 16 Feb 2016 07:58 AM PST When they're flying, their head is like a steady cam, maintaining a set position despite their body orientation. When walking, they're like a heavy metal drummer slamming their head forward and back as they walk. If they can see/balance/find-food with their head shaking like that, why do they need a steady cam mode? [link] [comments]  |
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