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telephotometer
telephotometer n.
Brit. 
/ˌtɛlᵻfə(ʊ)ˈtɒmᵻtə/
, /ˌtɛlᵻfə(ʊ)ˈtɒmᵻtə/U.S. /ˌtɛləfəˈtɑmədər/
Physics an instrument for measuring the intensity of light from a distant source./ˌtɛləfəˈtɑmədər/ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > intensity of light, luminosity > [noun] > degree of intensity > instrument
photometer1779
photoscope1872
spectrophotometer1881
light meter1889
Hefner1891
illuminometer1895
luxmeter1910
lumeter1911
telephotometer1915
1915 Theosophical Path Aug. 122 The telescope, telecamera, telespectroscope, telephotospectroscope, telephotometer, telebolometer and telemicrometer; these, and a hundred more adjunct instruments, have discovered many laws.
1931 Monthly Weather Rev. 1930 (U.S.) 58 440/2 In the measurements over the sea..the telephotometer, the range finder, and the theodolite were set up on the point of the mole.
1949 Proc. Inst. Electr. Engineers 96 ii. 456/2 It was possible to calibrate the telephotometer in daylight by reference to tungsten-filament standard lamps of 1-, 2- and 5-kW sizes over ranges varying from 1 500 to 5 000 ft.
2004 R. W. G. Hunt Reprod. Colour (ed. 6) vi. 58 The densities and log scene luminances were measured using the same telephotometer.
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