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radiomicrometer
radiomicrometer n.
Brit. 
/ˌreɪdɪəʊmʌɪˈkrɒmᵻtə/
, /ˌreɪdɪəʊmʌɪˈkrɒmᵻtə/U.S. /ˌreɪdioʊˌmaɪˈkrɑmədər/
[compare French radiomicromètre (1890)] now historical an instrument for measuring very weak infrared or microwave radiation./ˌreɪdioʊˌmaɪˈkrɑmədər/ΘΚΠ
the world > physical sensation > sight and vision > optical instruments > instruments for measuring > [noun] > light or radiation
phaometer1747
photometer1779
diaphanometer1789
lucimeter1825
refractometer1842
Abbe refractometer1876
dietheroscope1877
reflectometer1879
radiomicrometer1887
holophotometer1888
flicker photometer1896
microphotometer1899
diffractometer1909
spot meter1952
photopolarimeter1971
the world > matter > physics > electromagnetic radiation > radio wave > microwave > [noun] > instrument for measuring
radiomicrometer1887
the world > matter > physics > electromagnetic radiation > light > chromatism > [noun] > spectrum > instrument for measuring
radiomicrometer1887
1887 C. V. Boys in Proc. Royal Soc. 42 189 (title) Preliminary note on the ‘radio-micrometer’.
1908 Rep. Brit. Assoc. Advancem. Sci. 1907 621 The first thing is to tune up the receiver accurately. This can be done by a Duddell radio-micrometer.
1944 H. Laurens in O. Glasser Med. Physics 594 The non-selective type of radiation detector is exemplified by a radiometer, radiomicrometer, thermopile or bolometer.
1999 J. Hecht City of Light (2004) iii. 31 Boys used them in an instrument he called a ‘radiomicrometer’, with which he could detect the heat from a candle nearly two miles (three kilometers) away.
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