Science, Том 13Moses King, 1889 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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Стр. 34
... Light without Heat . PROFESSOR BRACKETT of Princeton College delivered an inter- esting address before the New York Electric Club some weeks ago . The part of his lecture which treated of the production of light without heat gave an ...
... Light without Heat . PROFESSOR BRACKETT of Princeton College delivered an inter- esting address before the New York Electric Club some weeks ago . The part of his lecture which treated of the production of light without heat gave an ...
Стр. 55
... light , the public , not sat- isfied with this improvement , demands that gas , in turn , shall make room for some other agent . The electric light has proved itself the only agency for the accomplishment of the difficulty of still ...
... light , the public , not sat- isfied with this improvement , demands that gas , in turn , shall make room for some other agent . The electric light has proved itself the only agency for the accomplishment of the difficulty of still ...
Стр. 371
... light on the face , no reflected light on the head , and the whole against a gray background . Then try the same head up- turned in profile , with no reflected light , and with a black back- ground . Then , again , SINGLE COPIES , TEN ...
... light on the face , no reflected light on the head , and the whole against a gray background . Then try the same head up- turned in profile , with no reflected light , and with a black back- ground . Then , again , SINGLE COPIES , TEN ...
Содержание
SINGLE COPIES TEN CENTS | 16 |
In Two Volumes Large 12m0 | 67 |
ELECTRICAL TESTING BUREAU | 92 |
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