The Reader's Digest, Volúmenes34-35DeWitt Wallace, Lila Acheson Wallace Reader's Digest Association, 1939 |
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Página 126
... light in the light in the north . I dragged out the signal kite and made a tail of antenna wire and pieces of cloth . Then I soaked the tail in gasoline , lit it , and jerked the kite into the air . The sight of it swaying against the ...
... light in the light in the north . I dragged out the signal kite and made a tail of antenna wire and pieces of cloth . Then I soaked the tail in gasoline , lit it , and jerked the kite into the air . The sight of it swaying against the ...
Página 117
... light of the light of the sun broken up by raindrops into its component colors . The spectroscope , substituting a trans- parent prism for the raindrops , can break up the light from any sub- stance . It can tell us the composi- tion of ...
... light of the light of the sun broken up by raindrops into its component colors . The spectroscope , substituting a trans- parent prism for the raindrops , can break up the light from any sub- stance . It can tell us the composi- tion of ...
Página 118
... light from the moon and the planets is only the sun's light reflected . Then he turned his instrument which we now call a spectroscope toward the stars . Each star star yielded a different pattern . Scientists who developed Fraun ...
... light from the moon and the planets is only the sun's light reflected . Then he turned his instrument which we now call a spectroscope toward the stars . Each star star yielded a different pattern . Scientists who developed Fraun ...
Contenido
Mama Visits the Factory | 10 |
Make a Note of | 17 |
Shield of Our Liberty | 26 |
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