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physioscopy
physioscopy n.
Brit. 
/ˌfɪzɪˈɒskəpi/
, /ˌfɪzɪˈɒskəpi/U.S. /ˌfɪziˈɑskəpi/
rare the representation in art of various phenomena of perspective, light, and colour as perceived in nature./ˌfɪziˈɑskəpi/ΚΠ
1904 H. Spencer Autobiogr. II. xlvi. 193 (note) Under ‘physioscopy’ I propose to include the rendering of the phenomena of linear perspective, of aerial perspective, of light and shade, and of colour in so far as it is determined not by artistic choice, but by natural conditions.
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