The wave simulator, created by Paul Falstad, can be used to create a wide range of demos with reflectors, lenses, cavities, and point sources. Common examples such as multiple source and multiple slit interference,...

This animated gif illustrates the changing voltages when an operational amplifier (op-amp) becomes saturated. This animation would be useful for visually respresenting Finley's law. Voltages and parts of the circuit of...

This is an animation of a Schmitt trigger circuit with clean input voltage. Voltages and parts of the circuit of this 3-D animated gif are highlighted with different colors. Current is displayed by green arrows...

This site, by Andrew Davidhazy at the Rochester Institute of Technology, describes how to make interesting and artistic photographs of a vibrating string. Davidhazy explains how the string is vibrated, how the string is...

This website, from Physclips, provides a general explanation of the Foucault pendulum, which is a laboratory demonstration of the earth's rotation. Some historical material is presented, along with a discussion of the...