Question

what is wavefront ? in 30 words minimum​

Answer 1

In physics, a wavefront of a time-varying field is the set of all points where the wave has the same phase of the sinusoid. The term is generally meaningful only for fields that, at each point, vary sinusoidally in time with a single temporal frequency. Wavefronts usually move with time.

Answer 2

Answer:

a wavefront of a time-varying field is the set (locus) of all points where the wave has the same phase of the sinusoid.[1] The term is generally meaningful only for fields that, at each point, vary sinusoidally in time with a single temporal frequency (otherwise the phase is not well defined).

Wavefronts usually move with time. For waves propagating in a unidimensional medium, the wavefronts are usually single points; they are curves in a two dimensional medium, and surfaces in a three-dimensional one.