Night vision is the ability to see in low light conditions. Whether by biological or technological means, night vision is made possible by a combination of two approaches: sufficient spectral range, and sufficient intensity range. Humans have poor night vision compared to many animals, in part because the human eye lacks a tapetum lucidum.
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Famous quotes containing the words night and/or vision:
“Already I am no longer looked at with lechery or love.
My daughters and sons have put me away with marbles and dolls,
Are gone from the house.
My husband and lovers are pleasant or somewhat polite
And night is night.”
—Gwendolyn Brooks (b. 1917)
“And taken by light in her arms at long and dear last
I may without fail
Suffer the first vision that set fire to the stars.”
—Dylan Thomas (1914–1953)