Image: Quarter of circle of Jonathan Sisson-MGR Lyon-IMG 9912
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Description: Quarter of a circle, by Jonathan Sisson. Brass, 1742. Classified as a Historic Monument. Lent by University Claude-Bernard Lyon 1 (Observatoire astronomique de Saint-Genis-Laval). Used by Jérôme de Lalande to measure the distance between the earth and the moon in 1751. On display at Lyon.
Title: Quarter of circle of Jonathan Sisson-MGR Lyon-IMG 9912
Credit: Own work
Author: Rama
Permission: You may select the license of your choice.
Usage Terms: Creative Commons Attribution-Share Alike 2.0 fr
License: CC BY-SA 2.0 fr
License Link: https://creativecommons.org/licenses/by-sa/2.0/fr/deed.en
Attribution Required?: Yes
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