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Page v
... TELESCOPE - NOTIONS OF GRAVITY BY HORROCKS , ETC. 7. SIR ISAAC NEWTON - LAW OF UNIVERSAL GRAVI- 23 33 46 TATION 51 8. NEWTON'S SUCCESSORS HALLEY , EULER , LA- GRANGE , LAPLACE , ETC. 60 9. DISCOVERY OF NEW PLANETS - HERSCHEL , PIAZZI ...
... TELESCOPE - NOTIONS OF GRAVITY BY HORROCKS , ETC. 7. SIR ISAAC NEWTON - LAW OF UNIVERSAL GRAVI- 23 33 46 TATION 51 8. NEWTON'S SUCCESSORS HALLEY , EULER , LA- GRANGE , LAPLACE , ETC. 60 9. DISCOVERY OF NEW PLANETS - HERSCHEL , PIAZZI ...
Page vi
... TELescope - SpeCTROSCOPE Book IV . THE PHYSICAL PERIOD 12. THE SUN · PAGE 73 86 3 94 13. THE MOON AND PLANETS - 14. COMETS AND METEORS 107 120 15. THE STARS AND NEBULĘ - n 125 INDEX 147 PREFACE An attempt has been made in these pages to ...
... TELescope - SpeCTROSCOPE Book IV . THE PHYSICAL PERIOD 12. THE SUN · PAGE 73 86 3 94 13. THE MOON AND PLANETS - 14. COMETS AND METEORS 107 120 15. THE STARS AND NEBULĘ - n 125 INDEX 147 PREFACE An attempt has been made in these pages to ...
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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accepted accurate ancient appear astronomers attraction bodies bright calculations called catalogue cause centre century Chinese circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect elements enabled epicycles equal error explain fact fixed follow force four Galileo gave give given gravitation heavens held Herschel increased interesting Jupiter Kepler knowledge known later LIBRARIES light lunar Mars mass mathematical mean measured method miles moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planet planetary pole position predicted progress proper motion proved records researches revolve ring rotation round Royal satellites seems seen showed SIGILLUM solar system spectroscope spectrum stars studied sun's supposed surface tables telescope theory tion trace true Tycho Brahe UNIVERSITY VERITAS