Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3758Chemical news office., 1932 |
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Strona 261
... passed the tests of experts on November 10-15 , 1931 . Meanwhile progress had gone on with the construction of the Observatory and the telescope mounting . The mounting for the telescope was designed and executed by the Warner and ...
... passed the tests of experts on November 10-15 , 1931 . Meanwhile progress had gone on with the construction of the Observatory and the telescope mounting . The mounting for the telescope was designed and executed by the Warner and ...
Strona 262
... passing through a central hole in the large mirror 9 inches in diameter , to the eye - piece or to the photographic plate . In this latter arrangement the magnifying power is increased nearly five times , as the equivalent focus of this ...
... passing through a central hole in the large mirror 9 inches in diameter , to the eye - piece or to the photographic plate . In this latter arrangement the magnifying power is increased nearly five times , as the equivalent focus of this ...
Strona 265
... passed through several hundred feet of salt , many of the beds of which were pure white , coarsely crystalline , and virtually free from impurities . Traces of potash were found . in the salt and it is possible that local con ...
... passed through several hundred feet of salt , many of the beds of which were pure white , coarsely crystalline , and virtually free from impurities . Traces of potash were found . in the salt and it is possible that local con ...
Spis treści
The Story of the Perkins Reflector | 260 |
Decline in U S Phosphates Output | 266 |
Mohlers Test for Benzoic Acid Edward T Illing B Sc F I C | 269 |
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