The National Geographic Magazine, Volume 112National Geographic Society, 1957 - Geography Indexes kept up to date with supplements. |
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Page lix
Quality by Zenith in the Radio for Travelers THIS TINY , TUBELESS 7 TRANSISTOR RADIO PERFORMS WHERE OTHERS FAIL ZENITH ZENITH ROYAL " 500 " POCKET RADIO Plays in trains , planes , boats , automobiles . ⚫ 7 transistors ( not just 4 or 5 ) ...
Quality by Zenith in the Radio for Travelers THIS TINY , TUBELESS 7 TRANSISTOR RADIO PERFORMS WHERE OTHERS FAIL ZENITH ZENITH ROYAL " 500 " POCKET RADIO Plays in trains , planes , boats , automobiles . ⚫ 7 transistors ( not just 4 or 5 ) ...
Page 109
... radio . I watched the needle of our radio compass trying to search out the direc- tion from which the signals were coming , but it swung back and forth through a range of 60 degrees , refusing to make up its mind . Still , its average ...
... radio . I watched the needle of our radio compass trying to search out the direc- tion from which the signals were coming , but it swung back and forth through a range of 60 degrees , refusing to make up its mind . Still , its average ...
Page 799
... radio communications . Such radio communications are possible in the first place because ultraviolet rays of ex- tremely short wave length ionize air particles in the upper ionosphere . This ionization pro- vides a veritable sea of ...
... radio communications . Such radio communications are possible in the first place because ultraviolet rays of ex- tremely short wave length ionize air particles in the upper ionosphere . This ionization pro- vides a veritable sea of ...
Contents
Across the Frozen Desert to Byrd Station Tractorborne Explorers | vi |
To the Men at South Pole Station By Rear Admiral Richard E Byrd | 1 |
Fledgling Wings of the Air Force By Thomas W McKnew | 266 |
Copyright | |
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aboard Admiral Admiral Dufek Africa Air Force Alan Villiers American Antarctic Antarctica beach birds boat booklet butterfly Byrd Byrd Station camera Canada Catalog City coast color Dept desert elephant Exakta expedition explorers feet fish flamingos forest Fundy Grosvenor Hopi Indian Kachinas Kodachromes land light Little America living Long Island look Luis Marden mahout Mayflower Mayflower II McMurdo MELVILLE BELL GROSVENOR Mention the National miles MILITARY Mountains NATIONAL GEOGRAPHIC MAGAZINE National Geographic Society National Geographic-It identifies Navy night Nomad North painting Palm Park photographs Pitcairn Pitcairn Island plane polar Prince Philip Pueblo radio River Robert College rock Royal sail School Scotland Scott ship Siple snow South Pole Station Thomas tide tion trees United Valley visitors Washington watch weather West White Sands wind winter yacht York Yukon