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antenna
has definitions from the fields of zoology,physics,electronics
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[ noun ] (physics,electronics) an electrical device that sends or receives radio or television signals
Synonyms Used in print (Cornell H. Mayer, "Radio Emission of the Moon...)Not all the observers have used the same procedures or made the same assumptions about the lunar brightness distribution when reducing the data , and this , together with differences in the methods of calibrating the antennae and receivers , must account_for much of the disagreement in the measured radio_brightness temperatures . 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 . 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 antenna patterns and the power gain at the peak of the beam were both measured ( Mayer , McCullough , and Sloanaker , 1958 b ) , so that the absolute power sensitivity of the antenna beam over the solid_angle of the moon was known . The antenna patterns and the power gain at the peak of the beam were both measured ( Mayer , McCullough , and Sloanaker , 1958 b ) , so that the absolute power sensitivity of the antenna beam over the solid_angle of the moon was known . |
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[ noun ] sensitivity similar to that of a receptor organ
Synonyms Examples "he had a special antenna for public relations" Used in print (Gibson Winter, The Suburban Captivity of the...)This means that the antennae of the congregation are extended into the community , picking_up the wave_lengths of those who will fit into the social and economic level of the congregation ; the mission of the church is actually a process of informal co-optation ; the lay ministry is a means to recruit like-minded people who will strengthen the social_class nucleus of the congregation . (The Department of State: A Fresh Look at the...)The policy officer lives with his antennae alerted for the questions which fall within his range of responsibility . Related terms |
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