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[ noun ] half the maximum intensity
Used in print (Cornell H. Mayer, "Radio Emission of the Moon...)The half-intensity diameter of the antenna beam was about 9 ' , and the angle subtended by the moon included the entire main beam and part of the first side lobes . The half-intensity diameter of the main lobe of the antenna was about 18 ' .5 , and the brightness temperature was reduced by assuming a Gaussian_shape for the antenna beam and a uniformly bright disk for the moon . Related terms |
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