Oscillations
and Waves > Waves > Interference and Diffraction
DCS#
3B50.20
RIPPLE TANK
APPARATUS
ripple tank
202-17-B
wave generator
202-17-E1
power supply
202-08-D
overhead projector
200
DESCRIPTION
Two point sources tap the surface of
the water
in the tank, producing an interference pattern that can be projected on
the screen. Vary the voltage to adjust the frequency.
NOTES
There are four holes for the
probes.
The two on either end are in phase with each other. Use the two
middle
holes for sources 180 degrees out of phase.
Fill the tank to about half-way up
the beveled
side. Wet the water line with liquid soap to reduce reflections.
