Wuerker said, " but my own theory is this : The energy in the high-frequency radio signal sent from the ground at 2.85 megahertz, that is, 2.85 million cycles per second, is deposited in the ionosphere and causes local heating, which changes the electrical conductivity of the ionosphere at that point.
32.
Wuerker said, " but my own theory is this : The energy in the high-frequency radio signal sent from the ground at 2 . 85 megahertz, that is, 2 . 85 million cycles per second, is deposited in the ionosphere and causes local heating, which changes the electrical conductivity of the ionosphere at that point.
