photopicadj.

Brit.

/fəʊˈtɒpɪk/,

/fəʊˈtəʊpɪk/, U.S.

/fəˈtɑpɪk/,

/ˌfoʊˈtɑpɪk/

Origin: Formed within English, by derivation. Etymons: photopia n., -ic suffix.

Etymology: < photopia n. + -ic suffix.

Physiology.

Of, relating to, or designating vision adapted to conditions of bright light. Contrasted with scotopia n.Such vision involves chiefly the cones of the retina, the rhodopsin of the rods being bleached by light.

ΘΚΠ

the world > physical sensation > sight and vision > types of vision > [adjective] > photopic or scotopic

scotopic1913

photopic1915

photoptic1949

1915 J. H. Parsons Introd. Study Colour Vision ii. 17 If the eye has been exposed to bright light it is said to be light-adapted. I shall speak of vision under these circumstances as photopia, and the light-adapted eye as a photopic eye.

1921 London, Edinb., & Dublin Philos. Mag. 6th Ser. 41 298 The entire luminosity curve of photopic vision will be shifted towards the red end of the spectrum.

1965 J. E. Crouch Functional Human Anat. xix. 597/1 The cones are photopic or discriminative and enable us to see details of form, structure, and color.

1990 Perceptual & Motor Skills 71 1254 An alternative designation for the phenomenon is ‘Purkinje shift’, defined..as the change in the wave length of colors that appear brightest when going from the scotopic to the photopic level of illumination.

Derivatives

pho'topically adv.

ΚΠ

1960 Science 12 Feb. 418/1 His deuteranope and protanope showed virtually identical foveal thresholds,..in excellent agreement with our (photopically determined) identity of this section for all subjects at all brightness levels.

1997 Jrnl. Biol. Rhythms 12 556 Stimulation of photopically sensitive photoreceptors (i.e., cones) is sufficient to reset the endogenous circadian melatonin rhythm.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	photopic
释义	photopicadj. Brit. /fəʊˈtɒpɪk/, /fəʊˈtəʊpɪk/, U.S. /fəˈtɑpɪk/, /ˌfoʊˈtɑpɪk/ Origin: Formed within English, by derivation. Etymons: photopia n., -ic suffix. Etymology: < photopia n. + -ic suffix. Physiology. Of, relating to, or designating vision adapted to conditions of bright light. Contrasted with scotopia n.Such vision involves chiefly the cones of the retina, the rhodopsin of the rods being bleached by light. ΘΚΠ the world > physical sensation > sight and vision > types of vision > [adjective] > photopic or scotopic scotopic1913 photopic1915 photoptic1949 1915 J. H. Parsons Introd. Study Colour Vision ii. 17 If the eye has been exposed to bright light it is said to be light-adapted. I shall speak of vision under these circumstances as photopia, and the light-adapted eye as a photopic eye. 1921 London, Edinb., & Dublin Philos. Mag. 6th Ser. 41 298 The entire luminosity curve of photopic vision will be shifted towards the red end of the spectrum. 1965 J. E. Crouch Functional Human Anat. xix. 597/1 The cones are photopic or discriminative and enable us to see details of form, structure, and color. 1990 Perceptual & Motor Skills 71 1254 An alternative designation for the phenomenon is ‘Purkinje shift’, defined..as the change in the wave length of colors that appear brightest when going from the scotopic to the photopic level of illumination. Derivatives pho'topically adv. ΚΠ 1960 Science 12 Feb. 418/1 His deuteranope and protanope showed virtually identical foveal thresholds,..in excellent agreement with our (photopically determined) identity of this section for all subjects at all brightness levels. 1997 Jrnl. Biol. Rhythms 12 556 Stimulation of photopically sensitive photoreceptors (i.e., cones) is sufficient to reset the endogenous circadian melatonin rhythm. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < adj.1915
随便看	reception committee reception counter reception day reception desk reception evening reception hall reception night reception order reception room reception statute reception town receptionism receptionist receptionists receptions receptitious receptive receptive field receptive language receptive measure receptive spot receptively receptiveness receptivenesses receptivities