Nature, Količina 80Sir Norman Lockyer Macmillan Journals Limited, 1909 |
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Zadetki 1–3 od 89
Stran 188
... record beginning inch from the margin . The record then traces its spiral groove until it is 2 inches from the centre , so the record has a breadth of a little more than 2 inches , or , say , 3 inches . The diameter at the beginning of the ...
... record beginning inch from the margin . The record then traces its spiral groove until it is 2 inches from the centre , so the record has a breadth of a little more than 2 inches , or , say , 3 inches . The diameter at the beginning of the ...
Stran 189
... Record of vibrations of human voice. in an inch , or in the fraction of an inch . Thus , suppose ten marks in one inch , then the frequency would be more than 300 vibrations per second . A diffi- culty arises when we find a complete ...
... Record of vibrations of human voice. in an inch , or in the fraction of an inch . Thus , suppose ten marks in one inch , then the frequency would be more than 300 vibrations per second . A diffi- culty arises when we find a complete ...
Stran 190
... Record of vibrations of human voice , in the experiment of using the gramophone as a phonau- tograph . Examine with magnifying glass . starting , the resonator of both gramophones was removed , and the circular openings at the base of ...
... Record of vibrations of human voice , in the experiment of using the gramophone as a phonau- tograph . Examine with magnifying glass . starting , the resonator of both gramophones was removed , and the circular openings at the base of ...
Vsebina
Blaise E Syntheses by Means of the Mixed Zinc Organo | 29 |
lings Sir W T ThiseltonDyer 349 Flora of Ngami extraordinaria 137 | 102 |
Blennerhassett Sir Rowland Death and Obituary Notice | 103 |
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acid agricultural algæ amount apogamy appears April Archibald Geikie astronomical British carbon cent centre chemical chemistry cholesterol College colour contains dealing described direction discussion effect electric engine expedition experimental experiments fact feet gases given gives Greenwich mean heat helium hydrogen illustrated important inches interest investigation ionisation Island J. J. Thomson Karl Pearson laboratory large number lectures lines London magnetic March matter ment method miles Museum nature observations Observatory obtained original oxygen paper parthenogenesis photographs physical plants plates Poldhu position practical present pressure produced Prof published radiation radio-active radium radium bromide rays recent record reference regard Royal Society schools scientific secondary South species spectroheliograph stars steam surface tantalum technical temperature theory thorium tion tube University uranium various velocity Victoria Land volume