Is Visible Light an Electromagnetic Wave That the Human Eye Can Perceive?
Yes, visible light is the portion of the electromagnetic spectrum that the human eye can perceive. There is no precise range of the visible spectrum; the average human eye can perceive electromagnetic waves with wavelengths between 400 and 760 nm, but some people can perceive electromagnetic waves with wavelengths between about 380 and 780 nm.
The human eye with normal vision is most sensitive to electromagnetic waves with a wavelength of about 555 nm, which are in the green region of the optical spectrum. The range of light waves that many other organisms can see is different from that of humans. For example, some insects, including bees, can see the ultraviolet wave band, which is very helpful for finding nectar.
Electromagnetic waves with different wavelengths cause the human eye to perceive different colors.
Color | Wave Range |
Red | 770~622 nm |
Orange | 622~597 nm |
Yellow | 597~577 nm |
Green | 577~492 nm |
Blue | 492~455 nm |
Violet | 455~350 nm |
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