What is a prism? A place for light waves that commit minor refractions! The thorough resource includes three hands-on investigations covering light reflection and refraction; mirrors, lenses, and images; and optical systems. Subject...

Online physics text that illustrates and explains the various characteristics of waves such as amplitude, period, frequency, wavelength, and speed. Includes interactive exercises.

Learn about light properties through practice with formulas. This resource shows the relationship between the speed of light, its wavelength, and its frequency. A fairly simple, but important relationship.

Two wave graphs depicting a sine wave and relating the various characteristics (wavelength, amplitude, frequency, and period) of a wave to each other. The site includes an interactive JavaScript form in which the visitor enters one...

At this tutorial, a happy bug in the center of a circular water puddle is used to describe the Doppler effect.