how does the phase decrease as the wave moves in the direction.delta of phase angle is directly proportional to delta of displacementphase angle=-k x where k is propagation constant and -undicates decrease in phase in the direction of wave.plz explain

Dear student,

The phase of a wave refers to a sinusoidal function such as the following:

where A, f, and are constant parameters. These functions are periodic with period , and they are identical except for a displacement of along the axis. The term phase can refer to several different things:

• It can refer to a specified reference, such as , in which case we would say the phase of is , and the phase of is .
• It can refer to , in which case we would say and have the same phase but are relative to different references.

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All the best.

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Sagar Singh

B.Tech, IIT Delhi