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.
Read more about Light.
Famous quotes containing the word light:
“Are not the days of my life few? Let me alone, that I may find a little comfort before I go, never to return, to the land of gloom and deep darkness, the land of gloom and chaos, where light is like darkness.”
—Bible: Hebrew, Job 10:20.
“A lover may bestride the gossamers
That idles in the wanton summer air,
And yet not fall; so light is vanity.”
—William Shakespeare (1564–1616)
“A light exists in spring
Not present on the year
At any other period.”
—Emily Dickinson (1830–1886)