Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3758Chemical news office., 1932 |
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Strona 257
... Optical Society , The Society of Public Analysts , The Geological Society of London , The Chemical Society of Japan ... 267 ... 265 266 Notices of Books 270 ... ... ... Notices ... ... ... ... 266 Patents and Trade Marks ... ... ... 271 ...
... Optical Society , The Society of Public Analysts , The Geological Society of London , The Chemical Society of Japan ... 267 ... 265 266 Notices of Books 270 ... ... ... Notices ... ... ... ... 266 Patents and Trade Marks ... ... ... 271 ...
Strona 260
... optical parts should be made , if possible , in America , and various glass manufacturers were consulted in efforts to obtain such a disc as would be suitable for astronomical purposes , and to be not less than 61 - inchs in diameter ...
... optical parts should be made , if possible , in America , and various glass manufacturers were consulted in efforts to obtain such a disc as would be suitable for astronomical purposes , and to be not less than 61 - inchs in diameter ...
Strona 261
... optical purposes and found satisfactory . Much credit is due to the Bureau of Standards for its part in making possible the completion . of the Perkins telescope . The glass disc was removed from the optical shops at Washington to the ...
... optical purposes and found satisfactory . Much credit is due to the Bureau of Standards for its part in making possible the completion . of the Perkins telescope . The glass disc was removed from the optical shops at Washington to 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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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