The electromagnetic spectrum depicts the range of all possible frequencies of electromagnetic radiation.
The Electromagnetic Spectrum
The electromagnetic spectrum describes all of the kinds of light, including those the human eye cannot see. In fact, the majority of "light" in the Universe is invisible to our eyes. The light we can see, made up of the individual colors of the rainbow, represents only a very small portion of the electromagnetic spectrum.
Other types of light include radio waves, microwaves, infrared radiation, ultraviolet rays, X-rays and gamma rays — all of which are imperceptible to human eyes.
All of these electromagnetic waves can help extend our human senses, transmit tremendous amounts of information, and when use appropriately have already profoundly helped meet our human needs.
Some Important Uses
of the Electromagnetic Spectrum
Radio WavesAM Radio Waves
Cell Phones
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Microwaves
Microwaves can cook your food:
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Infrared Radiation
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Visible Light
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Ultraviolet (UV)
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X-Rays
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Gamma Rays
*All electromagnetic waves are used to study outer space!
Video Guide:
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Topic Tips
- The electromagnetic spectrum depicts the range of all possible frequencies of electromagnetic radiation. All of which have unique applications that extend our human senses and meet human needs.