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seen Oct 15 at 21:27

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accepted about superposition of two sinusoidal waves
Oct
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comment about superposition of two sinusoidal waves
Oh, I see, that's how we average them in time. Thanks a lot
Oct
9
comment about superposition of two sinusoidal waves
Thanks Rob. I see your point now. Yes, it doesn't make sense to have different unit on both side since the intensity should be defined as the amplitude square (without time). But then how to get $I = I_1 + I_2 + 2\sqrt{I_1I_2}\cos(\phi_1-\phi_2)$ in the wiki en.wikipedia.org/wiki/Interference_%28wave_propagation%29 ?
Oct
9
comment about superposition of two sinusoidal waves
Thanks for the reply. If I integrate from 0 to a unit time, i.e. 0 to 1, the sin term will remain in the result !?
Oct
9
comment about superposition of two sinusoidal waves
that's my question, where it comes wrong with the math? I did the integral myself and with mathematica, I got the same answer :(
Oct
9
comment about superposition of two sinusoidal waves
intensity is proportional to $A^2$
Oct
9
revised about superposition of two sinusoidal waves
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asked about superposition of two sinusoidal waves
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accepted why stopping potential in the photoelectric effect is negative?
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8
comment trying to understand the electricl potential and potential energy
Thanks. I understood that only the potential difference matters. But my question is asking if I choose the different zero potential, the absolute potential energy will be same but the sign might flipped, so what does it mean by the sign in that case?
Oct
8
asked why stopping potential in the photoelectric effect is negative?
Oct
8
asked trying to understand the electricl potential and potential energy
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