Question

what is a wavefront?​

Answer 1

Answer:

In physics, the wavefront of a time-varying field is the set (locus) of all points where the wave has the same phase of the sinusoid. ... For waves propagating in an unidimensional medium, the wavefronts are usually single points; they are curves in a two dimensional medium, and surfaces in a three-dimensional one.

Answer 2

Answer:

In physics, the 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

Explanation:

Wavefront is defined as the imaginary surface constructed by the locus of all points of a wave that have the same phase, i.e. have the identical path length from the source of that wave.