Light
Visible light (commonly referred to simply as light) is electromagnetic radiation that is visible to the human eye, and is responsible for the sense of sight. Visible light has a wavelength in the range of about 380 nanometres to about 740 nm – between the invisible infrared, with longer wavelengths and the invisible ultraviolet, with shorter wavelengths.
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Famous quotes containing the word light:
“Accursed who brings to light of day
The writings I have cast away.”
—William Butler Yeats (1865–1939)
“With his head over his shoulder turned,
He seemed to find his way without his eyes,
For out o’ doors he went without their help,
And to the last bended their light on me.”
—William Shakespeare (1564–1616)
“If we see light at the end of the tunnel,
It’s the light of the oncoming train.”
—Robert Lowell (1917–1977)