we have the wave equation as follows with non zero phase constant:(adsbygoogle = window.adsbygoogle || []).push({});

y(x,t) = ym * sin(k( x - PHI/k) - wt)

or

y(x,t) = ym * sin(kx - w(t + PHI / w))

I don't understand where did the PHI /k or PHI / w came from ??

I understand how did we derive the wave equation but I don't understand this part.

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# Question about phase constant

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