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:
“For all this sea-hoard of deciduous things,
Strange woods half sodden, and new brighter stuff:
In the slow float of differing light and deep,
No! there is nothing! In the whole and all,
Nothing that’s quite your own.
Yet this is you.”
—Ezra Pound (1885–1972)
“When it is dark in the east, it is light in the west; when things are dark in the south there is still light in the north.”
—Chinese proverb.
“So fallen! so lost! the light withdrawn
Which once he wore!
The glory from his gray hairs gone
Forevermore!”
—John Greenleaf Whittier (1807–1892)