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:
“I see my light come shining
From the west unto the east
Any day now, any day now,
I shall be released.”
—Bob Dylan [Robert Allen Zimmerman] (b. 1941)
“Think what a mean and wretched place this world is; that half the time we have to light a lamp that we may see to live in it. This is half our life. Who would undertake the enterprise if it were all?”
—Henry David Thoreau (1817–1862)
“The Athanasian Creed is to me light and intelligible reading in comparison with much that now passes for science.”
—Samuel Butler (1835–1902)