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Updated: May 19, 2025
A differential method of determining the amount of aberration, struck out by M. Loewy of Paris, avoids most of the objections to the absolute method previously in vogue; and the upshot of its application in 1891 was to show that Struve's constant might better be retained than altered, Loewy's of 20·447" varying from it only to an insignificant extent.
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