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[ noun ] a metric unit of length equal to one thousandth of a meter
Synonyms Used in print (Frank Getlein and Harold C. Gardiner, S.J., Movies,...)The film consists_of a series of still , transparent photographs , or `` frames '' , 35 - mm. - wide . (Cornell H. Mayer, "Radio Emission of the Moon...)Radio_observations of the moon have been made over the range of wave_lengths from 4.3 mm to 75 cm , and the results are summarized in Table 1 . Observations have also been made at 1.5 mm using optical techniques ( Sinton , 1955 , 1956 , ; see_also chap. 11 ) . In the observations at 4.3 mm ( Coates , 1959 a ) , the diameter of the antenna beam , 6 ' .7 , was small enough to allow resolution of some of the larger features of the lunar surface , and contour diagrams have been made of the lunar brightness distribution at three lunar phases . Very recently , observations have been made at 8 - mm wave_length with a reflector 22 meters in diameter with a resultant beam width of only about 2 ' ( Amenitskii , Noskova , and Salomonovich , 1960 ) . Related terms |
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