Quantum Mechanics and Classical Physics: What lies in the middle? |
- Quantum Mechanics and Classical Physics: What lies in the middle?
- Why can our eyes precisely lock onto objects, but can't smoothly scroll across a landscape?
- Is the sun perfectly round?
- [Astronomy] Excluding polar regions, can planet have a night and day that are not equal in length?
- Do people bleed slower in space?
- In the post red giant stage of a star, why do the outer layers drift into space and not collapse onto the white dwarf?
- How do centipedes sense moisture?
- How do spacecraft get rid of excess heat?
- Is there a sonic boom equivalent in water?
- Why is vision grainy at night or in dark areas?
- Why is Jupiter too small to become a star but Trappist-1 is a star despite being the same size?
- Do GPS Satellite s need to know their exact distance from the surface of the earth?
- How is the speed of a space probe measured?
- How is it possible that the behavior of light can be explain by both waves and particles?
- What would happen to a flame if the ambient temperature was the same as the flame?
- Is there a limit to possible telescope resolutions?
- Did cosmic background radiation light up the whole universe?
- How to derive the Relativistic Doppler shift in Energy?
- Do electrons move at Absolute zero?
- Is there a top speed to the expansion of the Universe?
| Quantum Mechanics and Classical Physics: What lies in the middle? Posted: 27 Feb 2017 06:34 PM PST If quantum mechanics helps physicist to describe nature at the atomic level (eg. subatomic particles) and classical physics helps physicist describe nature at a macro level (eg. celestial bodies) is there a point at which one can use both to describe or calculate for something? What is the smallest thing we can describe using classical physics and what is the largest thing we can describe using quantum mechanics? Does something like that even exist? Or does the opposite exist, where one can't describe something using quantum mechanics or classical physics? [link] [comments]  |
| Why can our eyes precisely lock onto objects, but can't smoothly scroll across a landscape? Posted: 28 Feb 2017 04:54 AM PST |
| Posted: 28 Feb 2017 04:13 AM PST I was watching sunrise this morning through very dense fog, and the sun appeared as a perfectly round circle. Is the sun actually a perfect sphere or is it somewhat oval, etc [link] [comments]  |
| [Astronomy] Excluding polar regions, can planet have a night and day that are not equal in length? Posted: 28 Feb 2017 06:43 AM PST Nighttime and daytime are not exactly equal but it's very close at the equator. Is it possible for the planet to slow down somewhat while rotating to give each cycle significant differences. [link] [comments]  |
| Do people bleed slower in space? Posted: 27 Feb 2017 11:08 PM PST My limited understanding would lead me to guess that the blood vessels are still applying pressure that would force the blood out, even in a zero gravity environment. But does the lack of pressure from gravity cause the pressure to be substantially less? I remember reading that blood pressure in general is lower in space. [link] [comments]  |
| Posted: 27 Feb 2017 03:37 PM PST |
| How do centipedes sense moisture? Posted: 28 Feb 2017 06:18 AM PST I assume they do because I've found them in crazy places they would never otherwise be - I never saw any in my house until I ran a humidifier in my daughter's room for a day or two, then we found two in her room. Once I had a cup of water next to my bed and the next morning there was a centipede in it (different house). And of course I think it's well known that they lurk in showers and damp basements and garages. I'm terrified of those guys and if there's a way to keep them away from me without bug-bombing my living space I'd love to hear it. [link] [comments]  |
| How do spacecraft get rid of excess heat? Posted: 28 Feb 2017 12:13 AM PST I've read the wiki article as a start but finding visuals would also be nice. Are there also hypothetical methods of venting heat in space that we currently don't have the technology for? [link] [comments]  |
| Is there a sonic boom equivalent in water? Posted: 27 Feb 2017 02:21 PM PST |
| Why is vision grainy at night or in dark areas? Posted: 27 Feb 2017 03:12 PM PST |
| Why is Jupiter too small to become a star but Trappist-1 is a star despite being the same size? Posted: 27 Feb 2017 03:28 PM PST Over the years I've read about how Jupiter is like a mini star that never grew large enough to form and make our system a binary. However, my understanding is that Trappist-1 is a brown dwarf that's the same size as Jupiter so how did it form? If it was originally a larger star that shrunk then why didn't it swallow the other planets near it when it was bigger? [link] [comments]  |
| Do GPS Satellite s need to know their exact distance from the surface of the earth? Posted: 28 Feb 2017 05:14 AM PST |
| How is the speed of a space probe measured? Posted: 27 Feb 2017 01:01 PM PST We often hear that "probe A" is leaving the solar system at a speed of XXX km/h with a very specific speed. But if I remember my science courses correctly speed is always relative to something. And that something moves in space (e.g. the Earth moves around the Sun, the Sun moves in the Galaxy etc.). Shouldn't this influence the speed given for a probe (or even a space rocket)? Thank you for your answers ! [link] [comments]  |
| How is it possible that the behavior of light can be explain by both waves and particles? Posted: 27 Feb 2017 05:58 PM PST Since waves and particles have different properties, how is it that light can be identified as both? [link] [comments]  |
| What would happen to a flame if the ambient temperature was the same as the flame? Posted: 27 Feb 2017 02:27 PM PST So in a normal combustion the flame points upward because hot air rises, what would happen if the ambient temperature was the same as the flame with no external factors. What would the flame do? [link] [comments]  |
| Is there a limit to possible telescope resolutions? Posted: 27 Feb 2017 01:31 PM PST Telescopes in space are becoming better and better. I wonder if there is any limit to the detail an image of a distant object can have? Leaving problems caused by an exoplanet's atmosphere and too much light from a nearby star beside - would it theoretically be possible to get a detailed image from an object (like an exoplanet) lightyears away? Or does anything about light limit the available detail on a far distance? [link] [comments]  |
| Did cosmic background radiation light up the whole universe? Posted: 28 Feb 2017 03:13 AM PST If cosmic background radiation started off as short wavelength radiation, and is now radio/microwave radiation, was there a time when it was visible light and the whole universe had a background glow? [link] [comments]  |
| How to derive the Relativistic Doppler shift in Energy? Posted: 27 Feb 2017 02:21 PM PST In his paper "On the Electrodynamics of Moving Bodies" Einstein presents a derivation of the doppler effect on light energy by first deriving the change in amplitude. After that imagines a plane wave of light, moving in the universe at an angle from the x-axis. He then imagines an imaginary sphere moving with the light in one frame of reference, such that the sphere always encloses the same 'bit' of light. He applies the Lorentz Transformation to the sphere, obtaining an equation for an ellipsoid in the other frame of reference. By multiplying the ratio between volumes by the ratio between amplitudes he gets the ratio between the energy of the light in both frames of reference. The problem is I have no idea how to take the volume of the ellipsoid. Anyone know how to do it or another easier way of finding the energy ratio (without Planck's constant)? [link] [comments]  |
| Do electrons move at Absolute zero? Posted: 28 Feb 2017 02:28 AM PST |
| Is there a top speed to the expansion of the Universe? Posted: 27 Feb 2017 01:31 PM PST It is evident that the universe is expanding and this process is accelerating. My questions are thus; 1) What is causing the acceleration of the expansion of space-time, and 2) Is there a point when the expansion speed will exceed the speed of light, perhaps causing stars and other sources of light to vanish from the sky? [link] [comments]  |
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