The sun emits light across the electromagnetic spectrum including all the colors of visible light. (Image credit: NASA's Imagine the Universe) ...

The electromagnetic spectrum is a rainbow of light waves that surround us — but we only see a small part of it. From radio waves to gamma rays, each type of light has its own properties and uses. By ...

Infrared is in the range of the electromagnetic spectrum between microwaves and visible light. IR has frequencies from about 30 to 400 THz and wavelengths of about 0.00003 to 0.004 inch (740 ...