Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3758Chemical news office., 1932 |
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Strona 260
... designed to contain a 60 - inch mirror , but upon realiza- tion that there were in existence two or three even this amount has proved adequate to other telescope mirrors of 60 - inch diameter , Professor Perkins insisted that the ...
... designed to contain a 60 - inch mirror , but upon realiza- tion that there were in existence two or three even this amount has proved adequate to other telescope mirrors of 60 - inch diameter , Professor Perkins insisted that the ...
Strona 261
... designed and executed by the Warner and Swasey Company , of Cleve- land . Temporary use of the mounting was assured through the loan of a 60 - inch mirror belonging to the Harvard Observatory . When the decision was reached that the ...
... designed and executed by the Warner and Swasey Company , of Cleve- land . Temporary use of the mounting was assured through the loan of a 60 - inch mirror belonging to the Harvard Observatory . When the decision was reached that the ...
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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