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单词 flash-meter
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flash-meter
flash-meter n. a device similar to the shutter of a camera which permits momentary exposure of slides for teaching purposes.
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society > leisure > the arts > visual arts > photography > viewing of photographs > [noun] > projecting on to screen > projector > parts of
tinter1891
projection lens1894
lamp-house1912
slide carrier1953
flash-meter1957
slide changer1959
1957 D. T. Herman et al. in S. Saporta & J. R. Bastian Psycholinguistics (1961) 538/2 A Keystone Model 1045 projector equipped with an Ilex flashmeter was used.
1959 J. W. Brown et al. A-V Instructional Materials Man. iv. 157 Keystone overhead projector setup, with tachistoscope (flash meter) and mask in place, ready to project reading slides.
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更新时间:2025/1/3 19:21:58