Electromagnetic Waves (1961)

The film explains the concept of electromagnetic waves, particularly focusing on their applications in radar, radio, and television. It describes how a crystal set functions as a simple radio receiver and introduces microwaves as shorter electromagnetic waves. The program demonstrates properties of these waves, including diffraction and interference, using various experiments. It concludes with an overview of radar technology, illustrating how it tracks aircraft by emitting and receiving electromagnetic waves, which are visualized on a screen in the radar control room.

Keywords
electromagnetic waves, radar, microwaves, crystal set, radio, television, diffraction, interference, transmitter, receiver, navigation

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