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File:Saturn Robert Hooke 1666.jpg

Summary

Description
English: Old drawing of Saturn by Robert Hooke. R indicates Saturn's globe, the two letters a indicate the expected overlap of the globe on the rings. Hooke's shading on the rings to the right of the right-hand a only (i.e. not at the left-hand a), indicates the shadow of the globe on the rings.

The two letters b indicate the expected overlap of the rings on the globe. Hooke's shading on the globe between the right-hand and left-hand bs could indicate the shadow of the rings on the globe, or the faint C-ring faintly blocking part of the globe.

The abbreviations marked around Saturn indicate directions: Sep. for Septentrional or northern; Mer. for Meridional; Occ. for Occidental or western; and Ori. for Oriental or eastern.
Date 1666 (volume 1)
Source Philosophical Transactions (Royal Society publication)
Author Robert Hooke

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