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:
“[T]hat moment of evening when the light and the darkness are so evenly balanced that the constraint of day and the suspense of night neutralize each other, leaving absolute mental liberty. It is then that the plight of being alive becomes attenuated to its least possible dimensions.”
—Thomas Hardy (1840–1928)
“The liveliness of literature lies in its exceptionality, in being the individual, idiosyncratic vision of one human being, in which, to our delight and great surprise, we may find our own vision reflected.”
—Salman Rushdie (b. 1947)