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:
“The pursuit of perfection, then, is the pursuit of sweetness and light.... He who works for sweetness and light united, works to make reason and the will of God prevail.”
—Matthew Arnold (1822–1888)
“Dear friend,
I will have to sink with hundreds of others
on a dumbwaiter into hell.
I will be a light thing.
I will enter death
like someone’s lost optical lens.”
—Anne Sexton (1928–1974)
“After I went to bed I had a curious fancy as to dreams. In sleep the doors of the mind are shut, and thoughts come jumping in at the windows. They tumble headlong, and therefore are so disorderly and strange. Sometimes they are stout and light on their feet, and then they are rational dreams.”
—James Boswell (1740–1795)