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:

    “I learn to affirm
    Truth’s light at strange turns of the mind’s road,
    wrong turns that lead
    over the border into wonder....”
    —Denise Levertov (b. 1923)

    “The light that shined upon the summit now seems almost to shine at our feet.”
    —Woodrow Wilson (1856–1924)

    “Let the light be called Day so that men may grow corn or take busses.”
    —Anne Sexton (1928–1974)