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:
“The starting point of the human and the end,
That in which space itself is contained, the gate
To the enclosure, day, the things illumined
By day, night and that which night illumines,
Night and its midnight-minting fragrances,
Night’s hymn of the rock, as in a vivid sleep.”
—Wallace Stevens (1879–1955)
“With the supermarket as our temple and the singing commercial as our litany, are we likely to fire the world with an irresistible vision of America’s exalted purpose and inspiring way of life?”
—Adlai Stevenson (1900–1965)