Question #77116
1 Answer
Jan 29, 2018
The antenna "oscillate" when at a natural harmonic wavelength.
Explanation:
ALL electromagnetic radiation is detected by the resonance, or synchronized vibrations of receptors. If you don't have a receptor with the correct multiple (or fraction) of a particular energetic wavelength, you won't "detect" or recognize the wave.
Radio-telescopes are built as antennas sensitive to radio-frequencies. Any radio-frequencies moving through space that impinge on the earth can then be detected by those radio-telescopes.
https://public.nrao.edu/telescopes/radio-telescopes/
