Scientific men have explored rivers, seas, mountains, jungles; with heavy drills they have probed into the earth, with powerful telescopes into the skies. Of the sac of gases about the earth they have learned little. Reason: the density of the atmosphere decreases so rapidly that at eight miles it will barely support an airplane, at 23 miles a small free balloon has reached its roof.
Above the upper reaches of the stratosphere, higher than man has ever studied, stretches the Kennelly-Heaviside layer of ionized ether which acts as a conductor (or reflector)...
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