The National Geographic Magazine, Volume 98National Geographic Society, 1950 - Geography Indexes kept up to date with supplements. |
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Page 411
... light comes from atoms in the cloud which glow from the heat of near - by stars . It also reflects light from stars in its vicinity . Some astronomers think such clouds may be the raw material from which stars are formed , or the ...
... light comes from atoms in the cloud which glow from the heat of near - by stars . It also reflects light from stars in its vicinity . Some astronomers think such clouds may be the raw material from which stars are formed , or the ...
Page 412
... light fogs their plates . which gives an indication of their tem- perature , and this in turn is an impor- tant clue to their life history . Red light also penetrates better through the dark clouds of dust and gas that hide or dim the light ...
... light fogs their plates . which gives an indication of their tem- perature , and this in turn is an impor- tant clue to their life history . Red light also penetrates better through the dark clouds of dust and gas that hide or dim the light ...
Page 417
... light of celestial bodies passes before it falls upon the mirror at the lower end ( page 419 ) . This lens has a rise in the center , dips down into a concave hollow all around , then rises again at the edge . Light rays passing through ...
... light of celestial bodies passes before it falls upon the mirror at the lower end ( page 419 ) . This lens has a rise in the center , dips down into a concave hollow all around , then rises again at the edge . Light rays passing through ...
Contents
Copraship Voyage to Fijis Outlying Islands By Marjory C Thomas 121 | viii |
Down the Susquehanna by Canoe By Ralph Gray With 45 illustrations in color from | xvi |
Here Come the Marines By Frederick Simpich 647 | xxii |
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