School of Physics Lecture Demonstration Manual

Wc-4 Two Slit Interference (using microwaves)

Published: Tuesday 14 March 2006 - Updated: Wednesday 30 March 2011

Aim

To demonstrate two slit interference with microwaves.

Apparatus

Diagrams

Click on pictures to enlarge.

Two Slit Interference Diagram

Description

The microwave transmitter is directed towards a large metal screen having two slits separated by a distance comparable to the wavelength (3 cm). As the receiver is moved along the line AB, maxima and minima are observed depending on the path difference of the waves from the two slits.

Safety notes

Electrical safety 

Maintenance 

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