What is electromagnetic radiation spectrum? - Definition from Whatis.com

Definition

electromagnetic radiation spectrum

The electromagnetic radiation spectrum is the complete range of the wavelengths of electromagnetic radiation, beginning with the longest radio waves (including those in the audio range) and extending through visible light (a very small part of the spectrum) all the way to the extremely short gamma rays that are a product of radioactive atoms.

Electromagnetic radiation results from the physics of the electromagnetic field.

This was last updated in December 2000

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