The Aurora BorealisR. Paul, Trench, Trübner & Company, Limited, 1896 - 264 pagini |
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Pagina v
... added general remarks on this phenomenon , and discussed the principal observations collected at that date , and the various hypotheses put forward to account for them . Since then no general work on the subject has appeared.
... added general remarks on this phenomenon , and discussed the principal observations collected at that date , and the various hypotheses put forward to account for them . Since then no general work on the subject has appeared.
Pagina 45
... hypothesis which attributes to atmospheric air a certain number of the lines in the spectrum of the aurora . According to the observations of Herschel , Saussure , Vogel , C. Gyllenskioeld , & c . , the spectrum of lightning gives seven ...
... hypothesis which attributes to atmospheric air a certain number of the lines in the spectrum of the aurora . According to the observations of Herschel , Saussure , Vogel , C. Gyllenskioeld , & c . , the spectrum of lightning gives seven ...
Pagina 58
... hypothesis ; on the contrary , it is certain that the aurora has a considerable depth , so that its lower border , or what appears such to each station , corresponds in fact , as a result of perspective , to different points . And ...
... hypothesis ; on the contrary , it is certain that the aurora has a considerable depth , so that its lower border , or what appears such to each station , corresponds in fact , as a result of perspective , to different points . And ...
Pagina 62
Alfred Angot. observer , but necessitates , on the other hand , an hypothesis which is at least disputable . This second method consists in measuring the apparent width of the auroral bands , which pass through the zenith , at their ...
Alfred Angot. observer , but necessitates , on the other hand , an hypothesis which is at least disputable . This second method consists in measuring the apparent width of the auroral bands , which pass through the zenith , at their ...
Pagina 63
... hypothesis of Nordenskioeld requires more confirmation . But it will be seen that it leads , with regard to the height of the aurora , to a conclusion similar to that arrived at by other methods . In contradiction to all these ...
... hypothesis of Nordenskioeld requires more confirmation . But it will be seen that it leads , with regard to the height of the aurora , to a conclusion similar to that arrived at by other methods . In contradiction to all these ...
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Termeni și expresii frecvente
Aosta appear April arcs Atlantic aurora borealis berg Berlin Berlin.-6th Berne Béziers Birr Castle Bologna Bonn Boringen Bossekop Bravais Breda Breuillepont Brighton Brussels Carlisle cirrus clouds colour crown Crumpsall Crumpsall Hall Dantzig Denainvilliers Durham earth Edition electricity Emden England Erfürt Europe Franecker frequency Geneva Gosport Göttingen Greenwich Gurzelen Hague Hamburg Hawarden height Helmstædt hemisphere hypothesis Iena July June Kendal Keswick kilometres Koenigsberg Kremsmunster Leipzig Lemstroem Lichtenberg light Lobau London luminous Lynn Regis magnetic disturbance magnetic meridian magnetic perturbation Mairan Manchester Mannheim Marseilles maxima maximum mean latitudes Moncalieri Montmorency movement Munster Naugard Neighbourhood North Shields observed Oxford Padua Paris Parma Peckeloh period phenomena phenomenon Plymouth polar aurora Prague Ratisbon rays relation Rochelle Rome Sagan seen Sept Silloth Sparendam spectrum Stonyhurst summit sun spots telluric currents terrestrial magnetism theory tion Tübingen Utrecht variation Vienna Volpeglino winter Wittenberg zenith zone Zurich Zwanenburg
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Pagina 5 - ... others, so low that they might be taken for the reflection of a distant burning homestead or city. This is what happened under Tiberius, when the cohorts hurried to the succour of the colony of Ostia, believing it to be on fire. During the greater part of the night the heaven appeared to be illuminated by a faint light resembling a thick smoke.