Star-land; being talks with young people about the wonders of the heavens (1899)
Ball, Robert Stawell, Sir, 1840- [from old catalog] · Boston and London, Ginn & company · leaf 263
st try again ;and after another guess or two, we see that a pole 40feet long will exactly answer. We do not use thismethod of guessing in algebra, because solving the 250 STAR-LAND. simple equation is a much better method. Adams andLeverrier found that to discover the unknown planetwas a question… … Fig. 71. — Orbits of Uranus and Neptune. of Uranus, and then suppose that a planet was revolv-ing in that circle. Its effect upon Uranus would thenbe calculated, and it would be found whether the ob-served irregularities could be in this manner accountedfor. The first planet they tried was not the…
Astronomy
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