There's lots to discover in the electromagnetic spectrum. Here's a tour that begins ... see NOVA's conversion chart. Rick Groleau is managing editor of NOVA Online.

The electromagnetic spectrum consists of a group of radiations that all travel at the speed of light (\(3\times 10^{8},m\,s^{-1}\)). In the middle of the EM spectrum is the visible spectrum ...

The electromagnetic spectrum consists of a group of radiations that all travel at the speed of light (\(3\times 10^{8},m\,s^{-1}\)). In the middle of the EM spectrum is the visible spectrum ...

How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...