photochromaticadj.

Brit.

/ˌfəʊtə(ʊ)krəˈmatɪk/, U.S.

/ˌfoʊdoʊkrəˈmædɪk/

Origin: Formed within English, by compounding; perhaps modelled on a French lexical item. Etymons: photo- comb. form, chromatic adj.

Etymology: < photo- comb. form + chromatic adj., perhaps after French photochromatique (1848 or earlier).

Of or relating to the action of light in causing a change of colour or a perception of colour; spec. (of lenses) exhibiting photochromism, photochromic.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > light > chromatism > [adjective]

dispersive1802

chromatic1841

photochromatic1856

society > leisure > the arts > visual arts > photography > [adjective] > colour

heliochromic1855

photochromatic1856

isochromatic1884

photo-trichromatic1896

colour1898

Lippmann1902

panchromatic1903

Lumière1907

lenticular1936

the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [adjective] > of chemical action of light > of change of colour by

photochromatic1856

photochromic1881

phototropic1900

tenebrescent1953

1856 Proc. Royal Soc. 1854–5 7 118 The general photochromatic effects of the higher degrees of light, such as from a clear sky in full sunshine, were far more uniform than those from inferior light.

1888 R. Meldola Chem. of Photogr. (1889) viii. 322 Other investigators..have confirmed the general result that silver chloride can be made susceptible of photochromatic impressions.

1971 Amer. Jrnl. Optometry 48 659 (title) The effects of combining optical coating and photochromatic lenses.

1990 Omni July 24/2 They work like photochromatic sunglasses... They open and shut according to the intensity of the light.

1997 D. A. Rochefort From Poorhouses to Homelessness (ed. 2) ii. 29 Such treatments as music therapy and ‘photochromatic therapy’ (which exposed patients to sunlight filtered through colored glass).

1999 IEEE Trans. Consumer Electronics 45 97/1 A category of new photochromatic storage material has been found suitable for rewritable digital video disc (DVD).

Compounds

photochromatic interval n. Psychology the difference between the minimum light stimulus needed for monochromatic vision and the minimum needed for colour vision.

ΚΠ

1912 K. Dunlap Syst. Psychol. iv. 65 The interval, therefore, between the light-threshold and the color-threshold, is called the photochromatic interval.

1945 Science 29 June 656/1 In this instance the photochromatic interval decreases sharply in the yellow and orange.

1997 G. A. Gescheider Psychophysics (ed. 3) ii. 18 The size of the photochromatic interval varies with wavelength, being smallest for the long wavelengths.

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

单词	photochromatic
释义	photochromaticadj. Brit. /ˌfəʊtə(ʊ)krəˈmatɪk/, U.S. /ˌfoʊdoʊkrəˈmædɪk/ Origin: Formed within English, by compounding; perhaps modelled on a French lexical item. Etymons: photo- comb. form, chromatic adj. Etymology: < photo- comb. form + chromatic adj., perhaps after French photochromatique (1848 or earlier). Of or relating to the action of light in causing a change of colour or a perception of colour; spec. (of lenses) exhibiting photochromism, photochromic. ΘΚΠ the world > matter > physics > electromagnetic radiation > light > chromatism > [adjective] dispersive1802 chromatic1841 photochromatic1856 society > leisure > the arts > visual arts > photography > [adjective] > colour heliochromic1855 photochromatic1856 isochromatic1884 photo-trichromatic1896 colour1898 Lippmann1902 panchromatic1903 Lumière1907 lenticular1936 the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [adjective] > of chemical action of light > of change of colour by photochromatic1856 photochromic1881 phototropic1900 tenebrescent1953 1856 Proc. Royal Soc. 1854–5 7 118 The general photochromatic effects of the higher degrees of light, such as from a clear sky in full sunshine, were far more uniform than those from inferior light. 1888 R. Meldola Chem. of Photogr. (1889) viii. 322 Other investigators..have confirmed the general result that silver chloride can be made susceptible of photochromatic impressions. 1971 Amer. Jrnl. Optometry 48 659 (title) The effects of combining optical coating and photochromatic lenses. 1990 Omni July 24/2 They work like photochromatic sunglasses... They open and shut according to the intensity of the light. 1997 D. A. Rochefort From Poorhouses to Homelessness (ed. 2) ii. 29 Such treatments as music therapy and ‘photochromatic therapy’ (which exposed patients to sunlight filtered through colored glass). 1999 IEEE Trans. Consumer Electronics 45 97/1 A category of new photochromatic storage material has been found suitable for rewritable digital video disc (DVD). Compounds photochromatic interval n. Psychology the difference between the minimum light stimulus needed for monochromatic vision and the minimum needed for colour vision. ΚΠ 1912 K. Dunlap Syst. Psychol. iv. 65 The interval, therefore, between the light-threshold and the color-threshold, is called the photochromatic interval. 1945 Science 29 June 656/1 In this instance the photochromatic interval decreases sharply in the yellow and orange. 1997 G. A. Gescheider Psychophysics (ed. 3) ii. 18 The size of the photochromatic interval varies with wavelength, being smallest for the long wavelengths. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < adj.1856
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