This video segment adapted from Shedding Light on Science illustrates the dispersion of light through a prism and how raindrops refract sunlight to form rainbows. [3:55]

From radio waves to gamma rays, this video segment from NASA introduces the seven categories of the electromagnetic spectrum and how each type of radiation is part of our everyday lives. [2:58]

A tour of radio waves in the electromagnetic spectrum. [3:38]

NASA's Fermi Gamma-Ray Telescope is finding hundreds of new objects at the very edge of the electromagnetic spectrum. Many of them have one thing in common: Astronomers have no idea what they are. [3:27]

The Sun is constantly broadcasting information about its activity in the form of light waves. Find out why there's more to see than what meets the eye. [2:56]

Provides an introduction to light and the electromagnetic spectrum, and how light behaves as both a wave and a particle. [9:36]

In the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an ecectric current. He also found that electric fields sometimes act like magnetic fields, and developed...

This lesson will introduce the shape of waves, including amplitude and frequency. It will also describe how the shape of waves changes from one type to the next. It is 3 of 5 in the series titled "Wave Shape."

Professor Dave explains what we mean by wave-particle duality and how this relates to the photoelectric effect. He discusses how this relationship was discovered through the work of Max Planck and Albert Einstein. [3:55]