4.5 Light Is a Form of Energy

Electromagnetic Waves

Changing electric field generates a changing magnetic field. The interplay between the two results in electromagnetic waves. Duration 4:18.

Electromagnetic Radiation

There is a very close relationship between electricity and magnetism. They may regenerate each other to give rise to electromagnetic radiation. Duration: 6:21.

The Electromagnetic Spectrum

The electromagnetic spectrum includes everything from radio waves to gamma waves, including a region known as visible light. Duration: 7:25

What Is White, What is Black?

Using a prism, a sheet of diffraction grating plastic or a spectroscope, white light can be broken into its separate components. Duration: 5:35.