The Planetarium and Astronomical Calculator |
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Page 60
... true with respect to the Moon , with this difference only , that as the Sun de- scribes the ecliptic but once a year , he is , during half that time , visible to each pole in its turn , and as long invisible . But , as the Moon goes ...
... true with respect to the Moon , with this difference only , that as the Sun de- scribes the ecliptic but once a year , he is , during half that time , visible to each pole in its turn , and as long invisible . But , as the Moon goes ...
Page 90
... Moon's horizontal parallax , ( 57 minutes and 18 seconds , ) to the distance of the Sun from the earth , which gives ... true mag- nitudes may be ascertained from the apparent , when their true distances are known . Spheres are to ...
... Moon's horizontal parallax , ( 57 minutes and 18 seconds , ) to the distance of the Sun from the earth , which gives ... true mag- nitudes may be ascertained from the apparent , when their true distances are known . Spheres are to ...
Page 96
... true going clock , and true Sun - dial is never the same ; except on the 15th day of April , the 16th of June , the ... Moon , by 96 Sec . 8 Of the Equation of Time .
... true going clock , and true Sun - dial is never the same ; except on the 15th day of April , the 16th of June , the ... Moon , by 96 Sec . 8 Of the Equation of Time .
Page 106
... MOON . It is generally believed that the Moon rises about 50 minutes later every day , than on the preceding ; but this is true only to places on the equator . In places of considerable latitude , there is a remarkable differ- ence ...
... MOON . It is generally believed that the Moon rises about 50 minutes later every day , than on the preceding ; but this is true only to places on the equator . In places of considerable latitude , there is a remarkable differ- ence ...
Page 147
... true . By the following example , it will be found , that by the true motions of the Sun , Moon and nodes , the Eclipse cal- culated , leaves the earth five periods sooner than it would have done , by mean equable motions . To ex ...
... true . By the following example , it will be found , that by the true motions of the Sun , Moon and nodes , the Eclipse cal- culated , leaves the earth five periods sooner than it would have done , by mean equable motions . To ex ...
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Common terms and phrases
angle apogee approach of centres Aries ascending node Astronomers attractive power body calculated centrifugal force Comets conjunction consequently descending diameter as seen difference Dominical letters earth Earth's shadow enter Table equal equator equinox fall fixed stars full Moon Geocentric longitude given gravity greatest grees H M. S. half Heavens heliocentric Herschel horary motion horizon Interrogations for Section Jupiter light longitude lunar Lunar Eclipses mean motion mean new Moon Middle apparent millions of miles minutes Moon in March Moon's mean anomaly Moon's node Moon's orbit Moon's true move nearer north pole Old Style opposite parallax penumbra performs a revolution perigee Pisces planet projectile force rays revolves rise round the Sun satellites Saturn seconds semi-diameter signs and degrees Solar System south pole subtract Sun and Moon Sun's distance Sun's mean anomaly Sun's mean distance Sun's true surface syzygy tance telescope Tides tion velocity Venus visible