far far away's latest activity
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.That’s what I thought at first. But the issue is that the wave equation we usually deal with is the linear wave equation. In reality...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.What do you mean? we can simply set $$u(x, t) = δ(x-ct)$$ This represents a delta pulse moving to the right at speed c. Isn’t this...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.Thanks. Indeed, the size doesn’t matter. However, if that is taken as the definition, then in my view it’s not a simple or elegant one...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.Yes, it's from Wikipedia https://en.wikipedia.org/wiki/Wave And it does use the word equilibrium.
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.I made that definition up myself, and I apologize — that was my mistake. Logically, I shouldn’t have done that. What I was really trying...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.I definitely agree with you that "a theory is an attempt to describe the way Nature behaves". However, the statement “the words you use...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.Thank you, but the resource you shared reads more like an extended introduction or overview of the concept of equilibrium rather than a...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.I beg your pardon, I think your reasoning is flawed. What I quoted is very simple: Notice that there is no strict, universal definition...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.The equilibrium situation is something we can define ourselves. It's the baseline or "rest state" against which disturbances are...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.If you define a mass density field M(x,t) with equilibrium M=0, then the particle corresponds to a localized disturbance (M=1 at its...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.But this also means a particle can be viewed as a wave if we take the statement from Wikipedia as the definition of waves.
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.OMG, thanks, that makes sense now. It means we have no rigorous definition here.
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.Okay, so now the problem becomes that a particle itself doesn’t necessarily have to propagate, right? Then what if I narrow the...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.I understand that physics is grounded in empiricism, and I’m not denying that. But a physical theory, in addition to being based on...
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Ffar far away replied to the thread Graduate Does a moving particle count as a wave?.You're trying to say that a wave must be periodic/oscillating? I don't think so.