UNIT:	Water waves
PURPOSE:	Illustrate circular and planar waves, interference, reflection
EQUIPMENT:	1. Ripple tank  2. Wave generator 3. Accessories: probes, barriers, wetting agent (soap) 4. Stand with a clamp 5. Variable low-voltage power supply (0-6V, 0-1A) 6. Overhead projector
SUGGESTIONS:	See the attached instructions
DISCUSSION:	See attached.

Instructions-1

Instructions-2

Instructions-3
 

1. Set-up
2. Pouring in the water colored with cranberry juice
3. Close-up of the hand-held wave generator
4. One Huygens source
5. Two Huygens sources
6. Hand-held wave generator with attachment for a planar wave
7. Planar wave