Electromagnetic waves travel at 300,000,000 metres per second (m/s) through a vacuum. Often a phrase is used to help remember the order of the groups of the electromagnetic spectrum such as Roman ...

There's lots to discover in the electromagnetic spectrum. Here's a tour that begins with radio waves and takes you through ... see NOVA's conversion chart. Rick Groleau is managing editor of ...

Let’s explore the amazing world of the electromagnetic spectrum! The electromagnetic spectrum has many types of light waves. It includes radio waves, microwaves, infrared light, visible light, ...

Electromagnetic waves can be separated into seven distinct groups in the spectrum. Each group contains a range of frequencies. For example, visible light contains all the frequencies that can be ...