History of Astronomy |
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Page 107
... Cassini made a chart of the full moon . Since then we have the charts of Schröter , Beer and Mädler ' Langrenus ( van_Langren ) , F. Selenographia sive lumina austriae philippica ; Bruxelles , 1645 . ( 1837 ) , and of Schmidt , of ...
... Cassini made a chart of the full moon . Since then we have the charts of Schröter , Beer and Mädler ' Langrenus ( van_Langren ) , F. Selenographia sive lumina austriae philippica ; Bruxelles , 1645 . ( 1837 ) , and of Schmidt , of ...
Page 109
... be a bar to the discovery of markings by which the axis and period of rotation could be fixed . Cassini gave the rotation as twenty - three hours , by observing a bright spot on her surface . Shröter made it 23h . THE PHYSICAL PERIOD 109.
... be a bar to the discovery of markings by which the axis and period of rotation could be fixed . Cassini gave the rotation as twenty - three hours , by observing a bright spot on her surface . Shröter made it 23h . THE PHYSICAL PERIOD 109.
Page 114
... Cassini , with a fine telescope , 35 - feet focal length , observed many spots moving from east to west , whence he concluded that Jupiter rotates on an axis like the earth . He watched an unusually permanent spot during twenty - nine ...
... Cassini , with a fine telescope , 35 - feet focal length , observed many spots moving from east to west , whence he concluded that Jupiter rotates on an axis like the earth . He watched an unusually permanent spot during twenty - nine ...
Page 115
... Cassini's famous spot . The " great red spot " was first observed by Niesten , Pritchett , and Tempel , in 1878 , as a rosy cloud attached to a whitish zone beneath the dark southern equatorial band , shaped like the new war balloons ...
... Cassini's famous spot . The " great red spot " was first observed by Niesten , Pritchett , and Tempel , in 1878 , as a rosy cloud attached to a whitish zone beneath the dark southern equatorial band , shaped like the new war balloons ...
Page 116
... Cassini , who detected bands like Jupiter's belts . Herschel established the rotation of the planet in 1775-94 . From observations during one hundred rotations he found the period to be 10h . 16m . os . , 44. Herschel also measured the ...
... Cassini , who detected bands like Jupiter's belts . Herschel established the rotation of the planet in 1775-94 . From observations during one hundred rotations he found the period to be 10h . 16m . os . , 44. Herschel also measured the ...
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