Nature, Volume 109Sir Norman Lockyer Macmillan Journals Limited, 1922 |
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Página 509
... records . The variation of the magnetic activity throughout the day , and even over short periods of an hour or so , has also been studied , the latter with the aid of the quick - speed records arranged to be taken simultaneously for ...
... records . The variation of the magnetic activity throughout the day , and even over short periods of an hour or so , has also been studied , the latter with the aid of the quick - speed records arranged to be taken simultaneously for ...
Página 651
... records , regarded as records of the progressive enfeeble- ment of the larger disturbance of the true earthquake , would represent the cryptoseism , or unfelt earth - bearing on the problems of geology , as we usually limit quake , and ...
... records , regarded as records of the progressive enfeeble- ment of the larger disturbance of the true earthquake , would represent the cryptoseism , or unfelt earth - bearing on the problems of geology , as we usually limit quake , and ...
Página 653
... records which fulfil these primary equirements , but there is another even more important . In all records there is a noticeable variation in frequency at different times of the day , moreover , the nature of this diurnal variation has ...
... records which fulfil these primary equirements , but there is another even more important . In all records there is a noticeable variation in frequency at different times of the day , moreover , the nature of this diurnal variation has ...
Índice
Fouriers Series and Integrals and the Mathematical Chéveneau C An Optical Method for the Determination | xxxiii |
Fleming A P M and J G Pearce Research in Industry HillTops Vol 3 510 | xxxv |
Hannay A H Standards and Principles in Art 256 | xlii |
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