Nature, Volume 93Sir Norman Lockyer Macmillan Journals Limited, 1914 |
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Página 112
... means of multiplying frequency by means The invention by R. Goldschmidt B ww 2 FIG . 1. — The liquid microphone of Dr. J. Vanni bounces off on to another inclined metal plate . A. which is in mechanical or electrical connection with the ...
... means of multiplying frequency by means The invention by R. Goldschmidt B ww 2 FIG . 1. — The liquid microphone of Dr. J. Vanni bounces off on to another inclined metal plate . A. which is in mechanical or electrical connection with the ...
Página 334
... means of kites in Germany and in America . About 1890 Mr. Eddy , in America , devised a tailless kite , and raised thermometers by its means ; but the great advance came when the box - kite , invented by Hargrave , of Sydney , was used ...
... means of kites in Germany and in America . About 1890 Mr. Eddy , in America , devised a tailless kite , and raised thermometers by its means ; but the great advance came when the box - kite , invented by Hargrave , of Sydney , was used ...
Página 394
... means of the ear . optophone , " The new instrument is intended to enable totally blind persons to recognise and " read " ordinary letterpress instrument by means of the ear . rapidly rotating disc perforated like a siren disc with ...
... means of the ear . optophone , " The new instrument is intended to enable totally blind persons to recognise and " read " ordinary letterpress instrument by means of the ear . rapidly rotating disc perforated like a siren disc with ...
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GEOLOGICAL SOCIETY at 8 An Apparently Paleolithic Drawing on | 36 |
Note on a Functional Equation | 51 |
RadioActive Elements and the Periodic Table | 121 |
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