radio_observation has definitions from the field of physics
[ noun ] (physics) an observation made with a radio telescope

Used in print

(Cornell H. Mayer, "Radio Emission of the Moon...)

Radio_observations of Venus and Jupiter have already supplied unexpected experimental data on the physical conditions of these planets .

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 .

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