History of Astronomy |
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... explain the invariable humility ofthegreat mathematical astronomers. Newton's comparisonofhimself to the child onthe seashore applies tothemall. As each new discovery opens up, itmay be, boundless oceans for investigation, for wonder ...
... explain the invariable humility ofthegreat mathematical astronomers. Newton's comparisonofhimself to the child onthe seashore applies tothemall. As each new discovery opens up, itmay be, boundless oceans for investigation, for wonder ...
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... explain how the sun, having set in the west, could get back to rise intheeast without being seen if itwas always the samesun.It was agreat step to suppose the earthto be spherical, and to ascribe the diurnal motions to itsrotation ...
... explain how the sun, having set in the west, could get back to rise intheeast without being seen if itwas always the samesun.It was agreat step to suppose the earthto be spherical, and to ascribe the diurnal motions to itsrotation ...
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... explains her phases; thatan eclipse ofthe moon happens whenthe earth cutsoff the sun's lightfrom her.He supposed theearth tobeflat, and to floatupon water.He determined theratio ofthe sun's diameter toits orbit,and apparently made out ...
... explains her phases; thatan eclipse ofthe moon happens whenthe earth cutsoff the sun's lightfrom her.He supposed theearth tobeflat, and to floatupon water.He determined theratio ofthe sun's diameter toits orbit,and apparently made out ...
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... explained the return ofthe sun tothe east eachmorning by its goingunder theflat earth in the night.He heldthat in a solar eclipsethe moonhides the sun,and in a lunareclipse the moonenters the earth's shadow—both excellent opinions ...
... explained the return ofthe sun tothe east eachmorning by its goingunder theflat earth in the night.He heldthat in a solar eclipsethe moonhides the sun,and in a lunareclipse the moonenters the earth's shadow—both excellent opinions ...
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... givenillustrates the extraordinarydeductive methodsadopted bytheancient Greeks. But they wentmuch fartherin the same direction. They seemto have beeningreat difficultyto explain how the earth is supported, just as were those who invented.
... givenillustrates the extraordinarydeductive methodsadopted bytheancient Greeks. But they wentmuch fartherin the same direction. They seemto have beeningreat difficultyto explain how the earth is supported, just as were those who invented.
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Airy allthe andthat andthe asthe Astronomer Royal Astronomia Nova astronomical units atmosphere atthe attraction axis bright bythe calculations catalogue centre century Chaldĉans 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