History of Astronomy |
From inside the book
Results 1-5 of 17
Page
... lunar tablesof Hansen, andto findamore accurate value for the secular acceleration of the moon's longitude and the node of her orbitthanany that could be obtained from modern observationsmade with instruments of the highest precision ...
... lunar tablesof Hansen, andto findamore accurate value for the secular acceleration of the moon's longitude and the node of her orbitthanany that could be obtained from modern observationsmade with instruments of the highest precision ...
Page
... The solar year, the lunar month, and the day were the units, and itis owing to their incommensurability thatwe find so manycalendars proposedand in useat different times. The only object to be attained by comparing the.
... The solar year, the lunar month, and the day were the units, and itis owing to their incommensurability thatwe find so manycalendars proposedand in useat different times. The only object to be attained by comparing the.
Page
... lunar tables. Fragments of alibraryat Agadehave been preservedat Nineveh, fromwhich we learn thatthe starcharts were even then dividedinto constellations, which were known by the names which they bear to this day,and that the signs of ...
... lunar tables. Fragments of alibraryat Agadehave been preservedat Nineveh, fromwhich we learn thatthe starcharts were even then dividedinto constellations, which were known by the names which they bear to this day,and that the signs of ...
Page
... lunar eclipse at Babylon inthe seventhyear ofCambyses, onthe fourteenth day of theJewish month Tammuz." Ptolemy, inthe Almagest (Suntaxis), says it occurred inthe seventh yearof Cambyses, onthenight ofthe seventeenthand eighteenthof the ...
... lunar eclipse at Babylon inthe seventhyear ofCambyses, onthe fourteenth day of theJewish month Tammuz." Ptolemy, inthe Almagest (Suntaxis), says it occurred inthe seventh yearof Cambyses, onthenight ofthe seventeenthand eighteenthof the ...
Page
... Lunar tables. Making use ofChaldæan eclipses, he was able to get an accurate value ofthe moon's mean motion. [Halley, in 1693, compared this valuewith his own measurements, and so discovered the acceleration of themoon's mean motion ...
... Lunar tables. Making use ofChaldæan eclipses, he was able to get an accurate value ofthe moon's mean motion. [Halley, in 1693, compared this valuewith his own measurements, and so discovered the acceleration of themoon's mean motion ...
Other editions - View all
Common terms and phrases
Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldæans Chinese comet confirmed Copernicus detected diameter discovered discovery distance earth eclipse epicycles equatoreal excentric explain fixed stars FOOTNOTES Frauenhofer fromthe Galileo Greenwich Halley havebeen heavenly bodies heavens heliometer Herschel Hipparchus Huggins hydrogen hypotheses inequality instruments inthe isthe John Herschel Jupiter Jupiter's Kepler lawof Lick Observatory light lines lunar Mars mathematical mean motion measured Mercury meteor miles moon moon's nebula Newton ofthese onthe orbit parallax perihelion period photographic physical planet planetary position predicted proper motion Ptolemy records reflector refractor retrograde retrograde motion revolve rotation round satellites Saturn seems solar system spectra spectroscope spectrum spots stellar sun's sunspot supposed surface telescope terrestrial thatthe theearth themoon theory thesame thesolar thesun tobe tothe Tycho Brahe Uranus velocity Venus Verrier William Herschel withthe zenith