Wavefronts and Time-Varying Wave Fields Quiz

Wavefronts are generally meaningful only for fields that vary sinusoidally in time with a single temporal frequency.

The wavefront is the set of all points having the same phase in a time-varying wave field.

Wavefronts usually move with time.

<p>In a unidimensional medium, wavefronts are usually single points; in a two-dimensional medium, they are curves; and in a three-dimensional medium, they are surfaces.</p> Signup and view all the answers

<p>The wavefronts are planes perpendicular to the direction of propagation and move in that direction together with the wave.</p> Signup and view all the answers

<p>1895</p> Signup and view all the answers

<p>10 nanometers to 10 picometers</p> Signup and view all the answers

<p>30 petahertz to 30 exahertz (3×10^16 Hz to 3×10^19 Hz)</p> Signup and view all the answers

<p>medical diagnostics and material science</p> Signup and view all the answers

<p>unidentified radiation</p> Signup and view all the answers