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:
“Loosened from the minor’s tether;
Free to mortgage or to sell,
Wild as wind, and light as feather
Bid the slaves of thrift farewell.”
—Samuel Johnson (1709–1784)
“Stern Daughter of the Voice of God!
O Duty! if that name thou love,
Who art a light to guide, a rod
To check the erring, and reprove;”
—William Wordsworth (1770–1850)
“Sitting by a lamp more often brings
Not peace, but other things.
Beyond the light stand failure and remorse....”
—Philip Larkin (1922–1986)