This demonstration shows the interference pattern caused by a soap film. Because of the different thicknesses of the film a rainbow is observed from the different wavelengths of the light.
Setup:
Set up the rod attached to the demo table. Place the platform on the rod. Attach a short rod with a right angle clamp to the top of the rod.
Place the light source on the platform.
Attach the lens to a ring stand and place to one side of the platform.
Place the liquid mixture (water, dish soap, glycerine) on the platform.
Hang the metal loop from the short rod.
To create the film, carefully dip the metal loop in the liquid.
Turn on the light and adjust the lens to project a clear image.
Notes:
Be careful, the lamp gets warm.
Courses Used In:
Coming Soon
Discussion and Polling Questions:
Coming Soon
Equipment Needed:
Lamp
Box Platform
Ring Stand
Lens
Metal Rod
Metal Platform
Short Metal Rod
Right Angle Clamps
Metal Loop
Liquid Mixture - Water, Dish Soap, Glycerine