Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3758Chemical news office., 1932 |
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Strona 260
... telescope . The completion of the 69 - inch mirror for the Perkins telescope brings to fruition the plans of the late Professor Hiram Mills Perkins of ten years standing . Professor Perkins , who for many years was Professor of ...
... telescope . The completion of the 69 - inch mirror for the Perkins telescope brings to fruition the plans of the late Professor Hiram Mills Perkins of ten years standing . Professor Perkins , who for many years was Professor of ...
Strona 261
... telescope mounting . The mounting for the telescope was 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 ...
... telescope mounting . The mounting for the telescope was 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 ...
Strona 262
... telescope , 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 ...
... telescope , 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 ...
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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acid addition Analysis apparently appeared areas atomic attempt B.Sc base Beds Breccia British cent Chemical coal collected colour combination Company completion compounds consideration construction containing countries deposits described designed direct disc effective elements equipment examination Family Allowances feet four gases given glass greater H₂O heat importance inches in diameter industrial infection interest January known largest late latter less lignite lines liquid London manganese manufacturers March Maritime material measurements Meeting ment metal method mirror mounting necessary Observatory observer obtained occur operation optical oxide oxygen passed Patent Perkins placed possible PREPARATION present production Prof Professor Professor Perkins proportion published refuse replace rhenium rocks salt short tons shows skin SOCIETY spectrum standard steam Stocks Street Sulphur Table telescope tion Trade treated treatment tube United volume