anuttarasammyak's latest activity
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anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.For a wave packet in free space, the state is a superposition of plane waves with different momenta. Each momentum component behaves as... -
anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.If it is a wave packet in free space, it has a velocity corresponding to each momentum component. One may regard it as a kind of...
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anuttarasammyak reacted to renormalize's post in the thread Undergrad Relativity, time, and quantum mechanics with
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OK, it seems clear that viewing a particle in a stationary state as moving with average speed ##\sqrt{⟨\mathbf{V\cdot V}⟩}## is an... -
anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.The decay law $$N=N_0e^{-\lambda t}$$ seems to require rest frame of the particle(s) where ##\lambda## be measured and ##t=\tau##...
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anuttarasammyak replied to the thread Undergrad Why is ##(t_1'-t_2')^2## constant in proof(invariance of intervals)?.As s=s', s is invariant between IFRs, not its time component quantity you refer.
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anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.I have read that muon could be captured by nucleus which shortens its life time. This model seems not appropriate to investigate the...
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anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.$$<T_n>=\frac{1}{2}m<v_n^2>$$ is also only for free particle ?
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anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.Thank you for your reply. Point 2 of post #1 was pointless, so I withdraw it.
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anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.Let me confirm for my understanding. Even in the 1s state of exotic hydrogen atom consisting of proton and muon, does muon not collapse...
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anuttarasammyak replied to the thread Undergrad Relativity, time, and quantum mechanics.Addeentum to 1 of post #1 on proper time in quantum mechanics : Consider a double-slit experiment with an electron beam at fixed...
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anuttarasammyak posted the thread Undergrad Relativity, time, and quantum mechanics in Special and General Relativity.[Mentors’ note: Spun off from this thread] I understand that you are interested in the concept of time in quantum mechanics. Here are...
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anuttarasammyak replied to the thread Another nice problem from Savchenko.Re:#2 2.1 When the rolls heve mass and inertia of rotation $$r_1=r, M_1, I_1$$ $$r_2,M_2, I_2$$ The additional term to Lagrangian is...
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anuttarasammyak replied to the thread Undergrad How many sorts of time are there in physics?.Thank you for a nice list. Looking at this list, I realized that thermodynamic time may be the only one that cannot be defined...
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anuttarasammyak reacted to wrobel's post in the thread Another nice problem from Savchenko with Like.
My version is $$L=mr^2\dot\theta^2(1+\cos\alpha)+mgr\theta\sin\alpha$$ hopefully that is the same:)
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anuttarasammyak reacted to wrobel's post in the thread Another nice problem from Savchenko with Like.
????? By definition, purely translational motion is when all the points of a rigid body move with the same velocity