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? |
- 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?
| Posted: 22 Apr 2017 09:07 AM PDT |
| 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? [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. [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? [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. [link] [comments]  |
| Does the curve of your eyeball have an impact on what you see? Posted: 22 Apr 2017 07:29 PM PDT |
| 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? [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? [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? [link] [comments]  |
| 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]  |
| Posted: 22 Apr 2017 04:55 PM PDT |
| Posted: 22 Apr 2017 01:48 PM PDT |
| Posted: 22 Apr 2017 10:08 AM PDT |
| 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. [link] [comments]  |
| Posted: 22 Apr 2017 02:02 PM PDT |
| Posted: 22 Apr 2017 04:50 PM PDT |
| 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? [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? [link] [comments]  |
| Posted: 22 Apr 2017 06:46 AM PDT |
| 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 [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? [link] [comments]  |
| 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? [link] [comments]  |
| Posted: 22 Apr 2017 06:47 PM PDT |
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