

The rotation of the soap film produces a radial thickness gradient, which leads to rings of color around the soap film. The center becomes black when it is less than one-quarter wavelength thick.
Demonstration of thin film interference. Read More
Demonstrate a well-known interference pattern. Read More
Demonstrate interference by a variable thickness wedge. Read More
Demonstration of interference by a thin film. Read More
Show how a quarter-wavelength coating prevents reflectinon. Read More
Show how dichroic filters work. Read More
Very simple and clear demonstration of soap film interference. Read More
Demonstrate soap film interference in a complicated way. Read More
Demonstrate circular soap film interference patterns. Read More
Show soap film interference and minimum energy soap surfaces. Read More
Large interference demonstration for lecture hall use. Read More
Demonstrate iridescence from thin film interference. Read More