All Questions
Tagged with speed-of-light quantum-mechanics
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Is there a good quantum explanation of refraction? [duplicate]
I'm aware of the classical explanation of refraction which deals with light being a wave that gets "slowed" down while passing from a medium to another. One problem that I have with this ...
- 99
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Why the photons are deflected during the refraction? [duplicate]
From what I learnt, when photons are passing throw a denser environnement with an positive angle (from the atmosphere to water for exemple), they are slow down. But I can't understand how this ...
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286
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Velocity of de-Broglie Wave
I have been trying to figure out the solution to this problem of finding the "velocity" of de-Broglie's wave. I have tried to see answers from countless sources but none of them helped. My ...
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If a photon is absorbed, does the associated wave function disappear instantaneously, or at the speed of light?
I came to this question while thinking about light with extreme wavelengths. Say we had light (em radiation) with a wavelength of 100's of thousands of kilometres and we absorbed a photon of it on ...
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In the early universe (quark-gluon plasma), was there such a thing as a gluon wave like an EM wave and gravitational wave?
I have read this question:
Participating in strong interactions between the quarks, they are "trapped" within a very tiny region of spacetime that we call "hadron". We don't see ...
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When travelling through a material, does light bend around the atoms, or does it travel slower in a straight line?
When comparing the speed of light through a material medium as opposed to through a vacuum, the speed through the material (e.g. glass or air) will be slower.
Is this because:
The light has to bend ...
- 870
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Is the speed of light the same in a true vacuum and a false vacuum? [closed]
Is there a difference in the speed of light in a true vacuum vs. a false vacuum?
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Can we measure a lower limit of the velocity with which a quantum mechanical wave function collapses?
According to the Copenhagen interpretation of quantum mechanics, a wave function collapses immediately and everywhere. This seems to imply that this happens at an infinite velocity. However, if the ...
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Shorter wavelength of photon in detecting a particle
I came across a post on this in the community but wasn't satisfied with the answer,so i am making a new post. Why do we need short wavelength to measure the position of a particle accurately?
The ...
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2
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How to measure static mass of light?
I am learning quantum chemistry using a book.
In this book the author deduce
$$p=\frac{h}{\lambda}$$
using three equations below
$$E^2=m_0^2c^4+p^2c^2$$
$$E=\frac{hc}{\lambda}$$
$$m_0=0$$
But how ...
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Does a solar panel encased in glass give off less power?
The speed of light in glass is about 2/3 c. If we encase a solar panel in glass, does it give off less power because of this reduced speed of light? (and ignoring other things like the reflectivity ...
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Is quantum uncertainty of particle location bound by the speed of light?
If I measure the location of a quantum particle and then measure its location 1 second later, is there a probability larger than zero that I find it in a location farther away from the first location ...
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1
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Classically, is the notion of a photon superfluous according to special relativity?
The invariant spacetime interval of a lightlike path is zero. So a photon is always exchanged between particles that are actually zero interval from each other. Then, is the concept of the photon ...
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How is the wave function for a particle affected, when the particle is near lightspeed?
Apologies in advance. I'm new to QM, but find it extremely interesting.
I thought it to be interesting, to see if a particle, subject to quantum mechanics, would still behave so, if the mass becomes ...
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Are photon wavelength and energy indirect measurements of one-way speed of light?
First, measure the wavelength ($\lambda$) of an EM wave with, say, a chocolate bar in a microwave oven.
Then, measure its average photon energy and get the wave frequency ($\nu=\frac{E}{h}$).
Now you ...
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