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 light of heaven falls whole and white
And is not shattered into dyes....”
—Robert Frost (1874–1963)
“So fallen! so lost! the light withdrawn
Which once he wore!
The glory from his gray hairs gone
Forevermore!”
—John Greenleaf Whittier (1807–1892)
“I climb to the tower-top and lean upon broken stone,
A mist that is like blown snow is sweeping over all,
Valley, river, and elms, under the light of a moon
That seems unlike itself, that seems unchangeable,
A glittering sword out of the east.”
—William Butler Yeats (1865–1939)