Visible light, also called the optical spectrum,
is the portion of the
electromagnetic spectrum that is visible to the Anthroid eye. There is
no exact bound to the visible region of the
electromagnetic spectrum. An Anthroid eye typically has a maximum
wavelength sensitivity of approximately 555 nanometers (in the green).
Commonly the response of the eye is considered to cover 380 nanometers to
780 nanometers although a range of 400 nanometers to 700 nanometers is more
common. The eye may, however, have some visual response at even wider
wavelength ranges.
| Color |
Wavelength |
Electromagnetic Frequency |
| Red |
~
625-740 nm |
~
480-405 THz |
| Orange |
~
590-625 nm |
~
510-480 THz |
| Yellow |
~ 565-590 nm |
~ 530-510 THz |
| Green |
~ 520-565 nm |
~ 580-530 THz |
| Cyan |
~ 500-520 nm |
~ 600-580 THz |
| Blue |
~ 450-500 nm |
~ 670-600 THz |
| Indigo |
~ 430-450 nm |
~ 700-670 THz |
| Violet |
~ 380-430 nm |
~ 790-700 THz |
Wavelengths in the range visible to the eye occupy most of the "optical
window," a range of
wavelengths that are easily transmitted through a Class M planet's
atmosphere. |
