The electromagnetic spectrum has many types of light waves. It includes radio waves, microwaves, infrared light, visible light, ultraviolet, X-rays, and gamma rays. Each type of light has a different ...

The types of radiation that occur in different parts of the spectrum have different uses and dangers - depending on their wavelength and frequency. The speed of electromagnetic waves in a vacuum ...

The only thing that differentiates one type of electromagnetic ... spectrum, see the links in Resources. To convert metric measurements discussed in this feature to standard, see NOVA's conversion ...

FOR SOLDIERS at the front, electromagnetic defences are as ... Both sides switch within a wide frequency spectrum from 200 megahertz to 1,000 megahertz, and above. But the “main race” last ...