The radio wave receiver of the radio astronomical observatory is located on the seashore at an altitude of n=2 m above sea level. When a radio star rises above the horizon, emitting electromagnetic waves with a wavelength of L = 21 cm, the receiver registers alternating maxima and minima. The recorded signal is directly proportional to the intensity of electromagnetic waves entering the receiver, the electric vector of which oscillates in a direction parallel to the water surface.
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