History of Astronomy |
From inside the book
Results 1-5 of 13
Page 36
... atmospheric refraction which makes the altitude of a star seem greater than it really is . Tycho Brahe was able to correct the lunar theory by his observations . Copernicus had introduced two epicycles on the 36 THE DYNAMICAL PERIOD.
... atmospheric refraction which makes the altitude of a star seem greater than it really is . Tycho Brahe was able to correct the lunar theory by his observations . Copernicus had introduced two epicycles on the 36 THE DYNAMICAL PERIOD.
Page 75
... atmosphere so far as it could affect naked - eye observations . The azimuth circle of Tycho's largest quadrant had a diameter of nine feet , and the quadrant a radius of six feet . He introduced the mural quadrant for meridian ...
... atmosphere so far as it could affect naked - eye observations . The azimuth circle of Tycho's largest quadrant had a diameter of nine feet , and the quadrant a radius of six feet . He introduced the mural quadrant for meridian ...
Page 88
... atmosphere are against the use of such large apertures , unless it be on high mountains . During the last half century excellent specula have been made of silvered glass , and Dr. Common's 5 - foot speculum ( removed , since his death ...
... atmosphere are against the use of such large apertures , unless it be on high mountains . During the last half century excellent specula have been made of silvered glass , and Dr. Common's 5 - foot speculum ( removed , since his death ...
Page 91
... atmosphere . He suggested that the others were due to absorption in the sun's atmosphere . Thereupon Professor J. D. Forbes pointed out that during a nearly total eclipse the lines ought to be strengthened in the same way ; as that part ...
... atmosphere . He suggested that the others were due to absorption in the sun's atmosphere . Thereupon Professor J. D. Forbes pointed out that during a nearly total eclipse the lines ought to be strengthened in the same way ; as that part ...
Page 96
... atmosphere , as clouds are melted and again given out by our air ; or , if the reader pleases , upon the annihilation and reproduction of parts of this resplen- dent covering , is left for theory to guess at.3 Ever since that date ...
... atmosphere , as clouds are melted and again given out by our air ; or , if the reader pleases , upon the annihilation and reproduction of parts of this resplen- dent covering , is left for theory to guess at.3 Ever since that date ...
Other editions - View all
Common terms and phrases
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