Question

What is a maser? Who developed it?

Answer 1

Maser produces electromagnetic waves which was developed by Charles H. Townes, James P. Gordon, and H. J. Zeiger

Explanation:

Charles H. Townes, James P. Gordon, and H. J. Zeiger developed this maser at Columbia University in 1953.

Maser produces the sound of the electromagnetic waves which is done through amplication.