Light Science for Leisure Hours, a Series of Familiar Essays on Scientific Subjects Natural Phenomena EtcLongmans, Green, and Company, 1871 - 316 páginas |
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Página 28
... side of the mean position of the needle , and as the excursions are small , never exceeding the fifth part of a degree , while the mean position of the needle lies some 20 ° to the west of north , it is clear that the excursions are ...
... side of the mean position of the needle , and as the excursions are small , never exceeding the fifth part of a degree , while the mean position of the needle lies some 20 ° to the west of north , it is clear that the excursions are ...
Página 32
... side of the globe , and passing out of the Arctic Sea by Spitzbergen and down the Atlantic , on the other . ' Colonel Sabine discovered that the intensity of the magnetic action varies during the course of the year . It is greatest in ...
... side of the globe , and passing out of the Arctic Sea by Spitzbergen and down the Atlantic , on the other . ' Colonel Sabine discovered that the intensity of the magnetic action varies during the course of the year . It is greatest in ...
Página 48
... side began to prevail . One by one , his antagonists gave way ; new processes have confirmed his results , figure ... side by side with this inquiry , another had been in progress . A crowd of diligent labourers had been searching with ...
... side began to prevail . One by one , his antagonists gave way ; new processes have confirmed his results , figure ... side by side with this inquiry , another had been in progress . A crowd of diligent labourers had been searching with ...
Página 64
... side . That is the primary reason of her being so much considered by astronomers . But there is another of equal importance . Venus travels nearer than our earth to the sun . And thus there are occasions when she gets directly between ...
... side . That is the primary reason of her being so much considered by astronomers . But there is another of equal importance . Venus travels nearer than our earth to the sun . And thus there are occasions when she gets directly between ...
Página 69
... side of the earth has to bring his observations into comparison with those made by an observer at the other side of the earth . Each uses the local time of the place at which he observes , and it has been calculated that for the result ...
... side of the earth has to bring his observations into comparison with those made by an observer at the other side of the earth . Each uses the local time of the place at which he observes , and it has been calculated that for the result ...
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appearance arctic Arica astronomers Atlantic aurora auroral light Author bright line cause chromosphere circumstance coloured comet consider continually course crater Crown 8vo Crozet Island cyclones depths destructive disturbance doubt earth earthquake eclipse effects Encke enormous equator equatorial eruption evidence fact feet force gradually Greenland Gulf Stream Halley's method heat HISTORY horse Illustrations interesting Ischia islands John Herschel JOHN STUART MILL land lava length less magnetic needle Maps Maury miles moon motion mountain nature nearly North Pole northern observations ocean odds pass peculiarity planet Post 8vo present reached recognised region remarkable result revised says scientific sea-wave Second Edition seems seen ship shores Sir Charles Lyell solar spectroscope spectrum Spitzbergen storm sun's distance supposed surface swept terrestrial theory tion transit transit of Venus vapour Venus Vesuvius volcanic vols voyagers westerly whole winds Woodcuts zodiacal light
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