History of Astronomy |
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Page 2
... sun spots ; while De la Rue , Loewy , and Balfour Stewart ' thought they found a connection between sun - spot displays and the planetary I Trans . R. S. E. , xxiii . 1864 , p . 499 , On Sun Spots , etc. , by B. Stewart . Also Trans ...
... sun spots ; while De la Rue , Loewy , and Balfour Stewart ' thought they found a connection between sun - spot displays and the planetary I Trans . R. S. E. , xxiii . 1864 , p . 499 , On Sun Spots , etc. , by B. Stewart . Also Trans ...
Page 95
... spot disappears at the western limb of the sun , it is never seen again . In other cases , after a fortnight , it reappears at the eastern limb . The faculæ , or bright areas , which are seen all over the sun's surface , but specially ...
... spot disappears at the western limb of the sun , it is never seen again . In other cases , after a fortnight , it reappears at the eastern limb . The faculæ , or bright areas , which are seen all over the sun's surface , but specially ...
Page 96
... sun - spots have never ceased from Galileo's time to ours . He supposed them to be clouds . Scheiner said they were the indications of tumultuous movements occasionally agitating the ocean of liquid fire of which he supposed the sun to ...
... sun - spots have never ceased from Galileo's time to ours . He supposed them to be clouds . Scheiner said they were the indications of tumultuous movements occasionally agitating the ocean of liquid fire of which he supposed the sun to ...
Page 97
... solar surface , and , after many years of work , arrived at a law of frequency which has been more fruitful of results than any discovery in solar physics . In 1843 he announced a decennial period of maxima and minima of sun - spot ...
... solar surface , and , after many years of work , arrived at a law of frequency which has been more fruitful of results than any discovery in solar physics . In 1843 he announced a decennial period of maxima and minima of sun - spot ...
Page 98
... sun - spots . But quite lately Schuster1 has given reasons for admitting a number of co - existent periods , of ... spot period . All modern total solar eclipse observations seem to show that the shape of the luminous corona surrounding ...
... sun - spots . But quite lately Schuster1 has given reasons for admitting a number of co - existent periods , of ... spot period . All modern total solar eclipse observations seem to show that the shape of the luminous corona surrounding ...
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accurate observations Airy astro Astronomer Royal Astronomia Nova astronomical units attraction axis bright calculations Cape Cassini catalogue centre century comet compute Copernicus diameter discovered discovery earth eclipse epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Laplace Lick Observatory light line of apses line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor method miles a second moon moon's nebulæ Newton Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil records refractor retrograde retrograde motion revolution revolve round ring rotation round the sun satellites seems showed Sirius solar system spectra spectroscope spectrum spots stellar sun-spots sun's surface supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith