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 9
... doubt on this point , because we are absolutely certain that the sun is self - luminous . Again , we observe the spectrum of the moon to be exactly similar to the solar spectrum , only , of course , much less brilliant . And here also ...
... doubt on this point , because we are absolutely certain that the sun is self - luminous . Again , we observe the spectrum of the moon to be exactly similar to the solar spectrum , only , of course , much less brilliant . And here also ...
Página 10
... doubt as to the real nature of the object which is the source of light . Secondly , when an electric spark flashes through any vapour , its light gives a spectrum which indicates the nature , not only of the vapour through which the ...
... doubt as to the real nature of the object which is the source of light . Secondly , when an electric spark flashes through any vapour , its light gives a spectrum which indicates the nature , not only of the vapour through which the ...
Página 11
... doubts might very reasonably have been entertained respecting the exactness of the observations on which the discovery rests . It was suggested many years ago , long indeed before the true powers of spectroscopic analysis had been ...
... doubts might very reasonably have been entertained respecting the exactness of the observations on which the discovery rests . It was suggested many years ago , long indeed before the true powers of spectroscopic analysis had been ...
Página 15
... doubt had been felt by astronomers that the zodiacal light really indicates the presence of minute bodies travelling in more or less eccentric paths round the sun . And it was confidently expected that whenever a spec- troscope of ...
... doubt had been felt by astronomers that the zodiacal light really indicates the presence of minute bodies travelling in more or less eccentric paths round the sun . And it was confidently expected that whenever a spec- troscope of ...
Página 16
... doubt whatever ; nor do we doubt that the interpretation will involve the explanation of a whole series of phenomena which have lately per- plexed astronomers . Recalling the association between auroras and terrestrial magnetism , and ...
... doubt whatever ; nor do we doubt that the interpretation will involve the explanation of a whole series of phenomena which have lately per- plexed astronomers . Recalling the association between auroras and terrestrial magnetism , and ...
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Términos y frases comunes
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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