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As you can see from the illustration above, visible light is only a very small portion of all light waves. You may ask yourself why is it that we only see the "visible" portion of light? If you study the illustration above, you will see at the earth's surface almost all the wavelengths with any significant energy are visible (see the green peak). There are some very small amounts of ultraviolet and infrared wavelengths that are present. In some cases, insects and other animals have adapted to see with those wavelengths.
CJ Kazilek, Kim Cooper. (2009, December 17). Light Spectrum . ASU - Ask A Biologist. Retrieved December 13, 2019 from https://askabiologist.asu.edu/spectrum-light
CJ Kazilek, Kim Cooper. "Light Spectrum ". ASU - Ask A Biologist. 17 December, 2009. https://askabiologist.asu.edu/spectrum-light
CJ Kazilek, Kim Cooper. "Light Spectrum ". ASU - Ask A Biologist. 17 Dec 2009. ASU - Ask A Biologist, Web. 13 Dec 2019. https://askabiologist.asu.edu/spectrum-light
The visible light spectrum humans can see is only a small part of all light wavelengths.