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Page v
... TElescope - NOTIONS OF GRAVITY BY HORROCKS , ETC. 7. SIR ISAAC NEWTON - LAW OF UNIVERSAL GRAVI- TATION 8. NEWTON'S PAGE vii I 7 13 23 333 46 51 SUCCESSORS HALLEY , --- EULER , LA- 60 GRANGE , LAPLACE , ETC. 9. DISCOVERY OF NEW PLANETS ...
... TElescope - NOTIONS OF GRAVITY BY HORROCKS , ETC. 7. SIR ISAAC NEWTON - LAW OF UNIVERSAL GRAVI- TATION 8. NEWTON'S PAGE vii I 7 13 23 333 46 51 SUCCESSORS HALLEY , --- EULER , LA- 60 GRANGE , LAPLACE , ETC. 9. DISCOVERY OF NEW PLANETS ...
Page vi
... Telescope - SpECTROSCOPE Book IV . THE PHYSICAL PERIOD 12. THE SUN · 13. THE MOON AND PLANETS PAGE 73 86 3883 94 107 14. COMETS AND METEORS 15. THE STARS AND NEBULÆ - 120 125 BIBLIOGRAPHY INDEX · 147 151 PREFACE AN attempt has been made ...
... Telescope - SpECTROSCOPE Book IV . THE PHYSICAL PERIOD 12. THE SUN · 13. THE MOON AND PLANETS PAGE 73 86 3883 94 107 14. COMETS AND METEORS 15. THE STARS AND NEBULÆ - 120 125 BIBLIOGRAPHY INDEX · 147 151 PREFACE AN attempt has been made ...
Page 35
... telescopes and accurate clocks . He invented the method of sub - dividing the degrees on the arc of an instrument by ... telescope not having been invented , he could not use a telescopic - sight as we now do in gunnery . This not only ...
... telescopes and accurate clocks . He invented the method of sub - dividing the degrees on the arc of an instrument by ... telescope not having been invented , he could not use a telescopic - sight as we now do in gunnery . This not only ...
Page 36
... telescope or a clock , and reading his account of the labour he bestowed upon each observation , we must all agree that Kepler , who inherited these observations in MS . , was justified , under the conditions then existing , in ...
... telescope or a clock , and reading his account of the labour he bestowed upon each observation , we must all agree that Kepler , who inherited these observations in MS . , was justified , under the conditions then existing , in ...
Page 45
... telescope made with both lenses convex ( not a Galilean telescope ) can have cross wires in the focus , for use as a pointer to fix accurately the positions of stars . An Englishman , Gascoigne , was the first to use this in practice ...
... telescope made with both lenses convex ( not a Galilean telescope ) can have cross wires in the focus , for use as a pointer to fix accurately the positions of stars . An Englishman , Gascoigne , was the first to use this in practice ...
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Common terms and phrases
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