visible light

Eyes can detect

Visible light is the portion of the electromagnetic spectrum that human eyes can detect—wavelengths roughly between 380 and 700 nanometers.

This narrow band produces the colors we perceive, from violet at the short end to red at the long end.

Visible light from the sun takes about eight minutes to reach Earth.

Beyond this range lie ultraviolet and infrared, invisible to us without instruments.

color

hue

Color's specific character

shade · tone · pigment · palette · rainbow · prism · wavelength · red · orange · yellow

spectrum

wavelength

Spatial repetition interval

refraction · diffraction · electromagnetic · infrared · ultraviolet · dispersion · frequency · absorption · transmission · spectroscopy

optics

refraction

Wave bending between media

polarization · interference · lens · prism · mirror · fiber optics · transparency · translucency · opacity · medium

sources

sunlight

Radiance from our star

firelight · moonlight · starlight · torchlight · bioluminescence · incandescence · fluorescence · phosphorescence · LED · filament

brightness

luminance

Light per unit area

illumination · brilliance · dimness · glare · dazzle · lux · exposure · contrast · blinding · faint

vision

eye

Organ of sight

cones · pupil · cornea · lens · optic nerve · sight · perception · scotopic · afterimage · blind spot

Categories
Opposites
visibility to human eye

visible lightinfrared

Heat-bearing electromagnetic waves

ultraviolet · ultraviolet light · infrared light · radio waves · gamma rays

presence vs absence of illumination

visible lightdarkness

Total absence of light

dark · blackness · pitch black · shadow · gloom

Family

light, vision, visible, visual, invisible, visionary, visibly, visualize, visibility

Familiarity
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