Beobachtung der Sonnenflecken etc
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ProF.Dr SpΓΆrer
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Article
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1879
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John Wiley and Sons
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English
β 306 KB
The observations were macie bj7 transits over a square-bar micrometer, one of the diagonals representing an hour circle. and 3. d are the observed differences uncorrected for differential refraction, which is included in the reduction to apparent place. Cambridge, U. S., Sept. 15. l"7. The quantiti