Nature, Volume 108Sir Norman Lockyer Macmillan Journals Limited, 1921 |
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Página 183
... electric power . Much energy is now being utilised in the U.S.A. for purely agricultural purposes . In California , for example , there is in effect one vast system of electrical supply extending over a distance of 800 miles with 7200 ...
... electric power . Much energy is now being utilised in the U.S.A. for purely agricultural purposes . In California , for example , there is in effect one vast system of electrical supply extending over a distance of 800 miles with 7200 ...
Página 546
... electric field on which the alternations of light depend were stated in a general way by Sir J. J. Thomson in his " Discharge of Electricity through Gases , ' but in the December issue of the Philosophical Maga- zine he gives these ...
... electric field on which the alternations of light depend were stated in a general way by Sir J. J. Thomson in his " Discharge of Electricity through Gases , ' but in the December issue of the Philosophical Maga- zine he gives these ...
Página 568
... Electric Telegraph . IN the issue of NATURE of November 17 , p . 381 , it is stated that " in 1861 telegraphy , the only practical application of electricity , was in private hands . The earliest telegraph was erected on the London and ...
... Electric Telegraph . IN the issue of NATURE of November 17 , p . 381 , it is stated that " in 1861 telegraphy , the only practical application of electricity , was in private hands . The earliest telegraph was erected on the London and ...
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BarrettHamilton and M A C Hinton | 21 |
42s | 266 |
ROYAL AERONAUTICAL SOCIETY at Royal Society of Arts at 5 30 | 296 |
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