An Account of the Astronomical Discoveries of Kepler Including An Historical R
An Account of the Astronomical Discoveries of Kepler Including An Historical R
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For this purpose, draw from C the thod tode- line CD, bisecting AB in D. Then, since AC = . J 666. 6, and AD = 50O, the angle CAD will be found = 72 23', and thence ACB = 2ACD = 34 54'. Therefore, since Mars, when seen from the sun in 4s. 17 is in the line BC, and ACB is n: 34 s. 54', he will, at the time when AC is =2 BC, be seen from the earth in 5s. 21 54': and, since CAB = 72 23', the sun will a, t the same time be in 8s. 4 27'. Or, if the earth should be in the point H of her orbit, the pl...anet would be seen from the earth in 3s. 12 6', and the sun in Os. 28 33'.
When C represents the opposite limit, the con- figuration will be somewhat different. For, then CB, according also to T. Brahe's theory, is z^ }375: and CAB will therefore be found = 68 4 1 ', and ACB = 42 28'. Consequently, in this li- mit, the planet will be seen from the earth in gs. 4 22', and the sun in 6s. 25 5 i ', when AC becomes equal to BC ; or, in lls. 29 28', while the sun is in 2s. 6 9'.
As the invariable inclination of the planetary orbits OF KEPLER, orbits to the ecliptic, which was established by this investigation, may justly be ranked among Kep- ler's great discoveries, the methods of investigation merit a particular detail.
What to read after An Account of the Astronomical Discoveries of Kepler Including An Historical R?
You can find similar books in the "Read Also" column, or choose other free books by Robert Small to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
For this purpose, draw from C the thod tode- line CD, bisecting AB in D. Then, since AC = . J 666. 6, and AD = 50O, the angle CAD will be found = 72 23', and thence ACB = 2ACD = 34 54'. Therefore, since Mars, when seen from the sun in 4s. 17 is in the line BC, and ACB is n: 34 s. 54', he will, at the time when AC is =2 BC, be seen from the earth in 5s. 21 54': and, since CAB = 72 23', the sun will a, t the same time be in 8s. 4 27'. Or, if the earth should be in the point H of her orbit, the pl...anet would be seen from the earth in 3s. 12 6', and the sun in Os. 28 33'.
When C represents the opposite limit, the con- figuration will be somewhat different. For, then CB, according also to T. Brahe's theory, is z^ }375: and CAB will therefore be found = 68 4 1 ', and ACB = 42 28'. Consequently, in this li- mit, the planet will be seen from the earth in gs. 4 22', and the sun in 6s. 25 5 i ', when AC becomes equal to BC ; or, in lls. 29 28', while the sun is in 2s. 6 9'.
As the invariable inclination of the planetary orbits OF KEPLER, orbits to the ecliptic, which was established by this investigation, may justly be ranked among Kep- ler's great discoveries, the methods of investigation merit a particular detail.
What to read after An Account of the Astronomical Discoveries of Kepler Including An Historical R?
You can find similar books in the "Read Also" column, or choose other free books by Robert Small to read onlineMoreLess
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