Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c9.59
Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c9.59
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c9.59
The other inequality coincides with that of the planet's centre, or that which arises from the eccentricity of its orbit, and it is given near the truth for all the planets, except Mercury, by which, as is no wonder, the first astronomers were, every where, greatly deceived. Of this inequality, it is supposed, just as in the cases of the sun and moon, that it is always as the sine of the planet's distance from the point of its slowest motion, or from what we call its *aphelion*, and is consequently greatest at 90° from that point.