Used for the famous Michelson-Morley Experiment, which showed that the measured speed of light is unaffected by the Earth's motion through space, this interferometer arrangement has become a standard for simple optical determinations of minute quantities. Now you can use this inexpensive kit with a laser pointer to have your students learn the principles of interference by division of intensity and apply the technique to measure the diameter of a human hair, construct a seismograph to detect weak vibrations, measure the coefficients of expansion of different metals, and confirm Michelson and Morley's conclusion.

The set includes:

• A baseplate
• Six magnetic supports
• A short focal length lens
• Two front silvered mirrors
• A beam splitter
• A laser pointer holder
• A manual