Lexic.us

Definition of Twilight vision

1. Noun. The ability to see in reduced illumination (as in moonlight).

Medical Definition of Twilight vision

1. Vision when the eye is dark-adapted. See: dark adaptation, dark-adapted eye. Synonym: night vision, rod vision, scotopia, twilight vision. (05 Mar 2000)

Lexicographical Neighbors of Twilight Vision

Literary usage of Twilight vision

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text-book of psychology by Edward Bradford Titchener (1910)
"Daylight and twilight vision. — The human eye is a single sense-organ, and all its sensations are of one general kind. ..."

2. A Text-book of Psychology by Edward Bradford Titchener (1909)
"Daylight and twilight vision. — The human eye is a single sense-organ, and all its sensations are of one general kind. But it is also an extremely elaborate ..."

3. The American Naturalist by American Society of Naturalists, Essex Institute (1907)
"In this twilight vision the fovea is far less sensitive to light than the more peripheral parts of the retina. Moreover all objects appear in shades of gray ..."

4. General Psychology by Walter Samuel Hunter (1919)
"twilight vision is a matter of the lower sensitivity of the black- white .substance found in the rods; thus a light too faint to affect the color-substance ..."

5. Lectures: On Illuminating Engineering Delivered at the Johns Hopkins by Johns Hopkins University, Illuminating Engineering Society (1911)
"The interesting theory of silhouetting as a feature of street illumination, which has been recently advanced, really concerns chiefly twilight vision and ..."

6. The Art of Illumination by Louis Bell (1912)
"At 0.5 meter-candle one has certainly not passed fully into conditions of twilight vision. Color perception, though much impaired, has not disappeared, ..."

7. Behavior: An Introduction to Comparative Psychology by John Broadus Watson (1914)
"In birds with twilight vision. — In fish. — In reptiles and in amphibia. III. Darkness-adaptation: monochromatic light. — In birds. ..."

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