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diameter
has definitions from the fields of mathematics,geometry
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[ noun ] the length of a straight line passing through the center of a circle and connecting two points on the circumference
Synonyms Used in print (Cornell H. Mayer, "Radio Emission of the Moon...)No attempts to measure the radio_emission of the remaining planets have been reported , and , because of their distances , small diameters , or low_temperatures , the thermal radiation at radio wave_lengths reaching the earth from these sources is expected to be of very low intensity . The maximum angular diameter of any planetary disk as observed from the earth is about 1 minute_of_arc . It should be possible , however , to put useful limits on the diameters of the radio_sources by observing with large reflectors or with interferometers . Recent interferometer measurements ( Radhakrishnan and Roberts , 1960 ) have shown the 960 - Mc emission of Jupiter to be partially polarized and to originate_in a region of larger diameter than the visible disk . 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 . |
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[ noun ] (mathematics,geometry) a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
Used in print (Raymond C. Binder et al., editors, Proceedings...)The rest of the surface had a temperature which decreased towards the outer diameter of the plug . Related terms |
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