The National Geographic Magazine, Volume 111National Geographic Society, 1957 - Geography Indexes kept up to date with supplements. |
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Page 436
From a radio as small as your hand GO ... to one as big as the world Zenith extra quality means finer performance ENITH ZENITH The Zenith Royal " 500 " Transistor Pocket Radio is a tiny , tubeless radio so powerful it per- forms where ...
From a radio as small as your hand GO ... to one as big as the world Zenith extra quality means finer performance ENITH ZENITH The Zenith Royal " 500 " Transistor Pocket Radio is a tiny , tubeless radio so powerful it per- forms where ...
Page 565
... radio sta- tions in the ionosphere . Radio sig- nals bounce back and forth between the ionosphere and the ground , skipping from one continent to an- other . X rays and ultraviolet rays produce these radio - reflecting elec- trons at ...
... radio sta- tions in the ionosphere . Radio sig- nals bounce back and forth between the ionosphere and the ground , skipping from one continent to an- other . X rays and ultraviolet rays produce these radio - reflecting elec- trons at ...
Page 568
... radio fade - outs from the flare ? They showed that X rays - not Lyman alpha rays are probably chiefly responsible for radio fade - out during a flare . Surpris- ingly , our rocket found no increase in Lyman alpha at all , but detected ...
... radio fade - outs from the flare ? They showed that X rays - not Lyman alpha rays are probably chiefly responsible for radio fade - out during a flare . Surpris- ingly , our rocket found no increase in Lyman alpha at all , but detected ...
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