Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 69American Philosophical Society, 1930 |
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... mirror , and this mirror body will have to include in it two new pioneer charac- teristics . The first , its great size , far beyond anything before contemplated . It will be twice the diameter of the existing 100 - inch mirror at Mount ...
... mirror , and this mirror body will have to include in it two new pioneer charac- teristics . The first , its great size , far beyond anything before contemplated . It will be twice the diameter of the existing 100 - inch mirror at Mount ...
Сторінка 9
... mirror . We now feel that our task is indeed an enlargement of the scale of our operations . We do not , however , minimize the obstacles which will have to be overcome in enlarging to the great scale on which we must work when ...
... mirror . We now feel that our task is indeed an enlargement of the scale of our operations . We do not , however , minimize the obstacles which will have to be overcome in enlarging to the great scale on which we must work when ...
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... mirror will be the same , except for a great enlargement of scale , as it would be with a glass mirror , but there will not be the disadvantage of changes of temperature disturbing the accuracy of the work or its possibility . The ...
... mirror will be the same , except for a great enlargement of scale , as it would be with a glass mirror , but there will not be the disadvantage of changes of temperature disturbing the accuracy of the work or its possibility . The ...
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facing 131 | 4 |
Ten Unsolved Mysteries of the Stellar Universe By HARLOU | 13 |
THE AMERICAN PHILOSOPHICAL SOCIETY HELD AT PHILADELPHIA | 17 |
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