Ball, R[obert] S[tawell], Sir, 1840- [from old catalog] · New York, H. Holt and company · leaf 91
iscoveries which have im-mortalised the name of Kepler is thus stated. The path of a planet round the sun is an ellipse inone focus of which the centime of the sun is situated. Thus let s (fig. 21) represent the centre of thesun, then the ellipse abpq denotes the path of theplanet. In the majority…
Astronomy
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