| 单词 | radiomicrometer | 
| 释义 | > as lemmasradiomicrometer   radiomicrometer  n.  Brit. , U.S. [compare French radiomicromètre (1890)]			 now historical an instrument for measuring very weak infrared or microwave radiation. 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. < as lemmas | 
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