Microwave interference with single and double slits.

Microwave interference with single and double slits. In this demo, the transmitter beams 3 cm microwaves at either a single or double adjustable slit made of aluminum. (The distance between slits can be 5 cm. or 10 cm.) The diffraction patterns are detected by the receiver mounted on a moveable swinging-arm assembly. Maximas are represented by by a loud tone (or can be displayed on the milliammeter), and minimas are silent. If the distance between slits is 10 cm., and the distance from the slits to the receiver is about a meter, then maximas occur about every 30 cm.