Using Microwaves

Microwaves can be used to demonstrate the wave properties reflection, refraction, diffraction, interference and polarisation.The transmitter produces 3.0cm microwaves.A receiver connected to a meter measures the intensity of the waves.The receiver is placed in the path of the microwave beam from the transmitter. The signal decreases with distance from the transmitter.A metal plate is placed between the transmitter and receiver can show that microwaves do not pass through metal.Metal plates are used to make two narrow slits so the microwaves pass through the slits.The receiver is used to find areas of cancellation and reinforcement.