The National Geographic Magazine, Volume 92National Geographic Society, 1947 - Geography Indexes kept up to date with supplements. |
From inside the book
Results 1-3 of 70
Page 300
... earth . Such data furnish clues not only to what is happening on the sun itself but help explain the structure and ... earth's own atmosphere are affected by the sun's rays , by noting what happens in the atmosphere when those rays are ...
... earth . Such data furnish clues not only to what is happening on the sun itself but help explain the structure and ... earth's own atmosphere are affected by the sun's rays , by noting what happens in the atmosphere when those rays are ...
Page 399
... earth is the master clock by which all other clocks are set . It is accurate to within one part in 30 million . This nightly task of timing the earth's rota- tion is carried out at the U. S. Naval Observa- tory , official keeper of the ...
... earth is the master clock by which all other clocks are set . It is accurate to within one part in 30 million . This nightly task of timing the earth's rota- tion is carried out at the U. S. Naval Observa- tory , official keeper of the ...
Page 673
... earth in its path , and then for hours or days our planet is drenched with this shower of electrified particles . When one of these streams approaches the earth , it encounters an invisible field of mag- netic force that forms a sort of ...
... earth in its path , and then for hours or days our planet is drenched with this shower of electrified particles . When one of these streams approaches the earth , it encounters an invisible field of mag- netic force that forms a sort of ...
Contents
Adventures with the Survey Navy By Irving Johnson 131 | xxi |
Carnival in San Antonio Texas By Mason Sutherland With 19 illustrations in color | xxvii |
Desert River San Juan Through Navajo Land By Alfred M Bailey With 11 illus | xxxiii |
Copyright | |
3 other sections not shown
Other editions - View all
Common terms and phrases
ACADEMY accredited Admiral Cruzen American Angle Inlet Antarctic Antarctica aurora Bay of Whales Beach beautiful bird boat booklet building camera camp Canyon Catalog clocks coast color Company Delhi Dept early earth east eclipse Electric expedition explorers feet film flowers forms garden Geographic Society Kodachrome Geographic-It identifies glacier Hill Hodeida Indian Island Lake land light Little America live look Luis Marden Mention the Geographic-It miles MILITARY modern Mohawk mountains Music NATIONAL GEOGRAPHIC MAGAZINE National Geographic Society névé Office picture plane plants Plate Pole Polident radio region River rock Ross Ross Sea San'a sand School ships snow South species Staff Photographer summer Ta'izz tion tower town U. S. Navy United Valley Volkmar Wentzel walls Washington watch winter Yemen York