Linked Questions
13 questions linked to/from Do gases have phonons?
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Misunderstood of wave-particle dualism? [duplicate]
Reading about dual nature of light, and atomic transitions, it seems to me, maybe wrongly, that the dual nature depends on the way we look at the phenomena.
Suppose a water wave travels and reach ...
user153036
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0
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Is there a quasi-particle corresponding to sound wave in air medium? [duplicate]
I have seen many quasi-particle here in this list. Is there any quasi-particle concept for sound wave in air medium?
If it exists, what's the purpose and usefulness of it?
If it does not exist, is ...
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answers
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Can low-frequency electromagnetic radiation be ionizing?
I've read from several sources that electromagnetic radiation begins to have an "ionizing" effect right around the time the frequency passes the uv spectrum and into x-ray/gamma ray spectrum. [1] [2] [...
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Is the wavefunction of particles inside a gas spread or localized?
For an individual free particle that starts localized, the wave function packet spreads over time, so the particle becomes less localized. Suppose now that we have a gas of those particles inside a ...
user83548
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3
answers
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Phonons in non-crystalline media
Do sound waves in a gas consist of phonons?
What about a glass? Or other non-crystalline materials such as quasicrystals?
How does the lack of translational symmetry affect the quantization of the ...
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3
answers
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Does sound show wave-particle duality?
We know that light and electrons both show wave-particle duality. Or in other words we can say that they can be both seen as a wave and a particle. Can a similar theory be applicable for sound? Can ...
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2
answers
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Is there a "Planck's constant" equivalent for phonons, sound particles
As per de Broglie's Law, every wave has a particle nature associated with it. I tried to find what sound particles are called, and I got that they are phonons.
Now, I am curious about what it's ...
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5
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1
answer
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Examples of a lower energy state being a lower entropy state?
I have heard that in quantum mechanics, the term "lower-energy state" is often used as a stand-in for a concept that should really be called "higher-entropy" state. There isn't a law that says that ...
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4
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Does anything exist only as ‘‘pure wave’’ without wave-particle duality?
Are sound waves “pure waves”? Or does sound also have a particle nature according to wave-particle duality?
user181531
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Speed of sound in solid -- temperature dependence
Let $v$ denote the speed of sound in a fixed solid, at a fixed temperature $T$. This will depend on properties of the solid (such as the bulk modulus and density).
Given an increase in $T$, does $v$ ...
- 2,788
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1
answer
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How does the diffraction occur in Raman-Nath diffraction?
We are doing an experiment that is called the Raman-Nath experiment, in which we calculate the speed of sound with the interaction between ultrasonic sound waves and light.
The experiment manual can ...
- 12.1k
5
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1
answer
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Mermin-Wagner theorem and SSB in 2D: is there sound in low dimensional solids
The Mermin-Wagner theorem states that there cannot be any spontaneous symmetry breaking happening in systems with short range interactions below dimension 3. Moreover, we know that Goldstone boson, ...
- 1,748
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Are sound waves in fluids also Goldstone modes?
One usually says that sound waves in a crystal, ie. phonons, are Goldstone modes of the broken translation symmetries. However, fluids have sound waves and also translation invariance. In fact, it's ...
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