Fresnel lens with 2.8-cm waves
Experiment no.: 5.8.6
A metal plate with removable rings of equal surface area serves as a Fresnel lens for 2.8-cm microwaves. Different arrangements of metal rings and ring-shaped openings enable variation of the destructive and constructive interference of the waves.
Comment: The video shows a slightly different set-up.
Comment: The video shows a slightly different set-up.
Videos for this experiment
Embedded videos are provided via YouTube in enhanced privacy mode.
When playing or opening, data may be transmitted to YouTube/Google.
Images for this experiment
Documents for this experiment
Experimental set-up
Arrangement of Fresnel zone plates
Relative phases of ring openings
Amplitudes and intensities
Two waves meet
Superposition principle
Path difference
Interferometer
