Light

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)