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Part I - The elementary geometry of wave motion
Waves in 2D and 3DIn 2D a wave is the propagation of simple periodic motion with crests along lines.
The parameters are as in 1D amplitude A, wave length , velocity c, period T, and frequency f. But here both the velocity and the wave length should be taken to be vectors.
The equation of the wave height is
y = A cos (ax+by+cz-t)
where is as before the radian frequency. But now ax+by = 2 .[x,y] /| |2