- #1
Spinnor
Gold Member
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Suppose I'm alive and well and living in the 17th century and I want to make observations of times when Jupiter's moon Io disappears behind Jupiter. The best way to do this is to use the regular motion of the stars in the sky as a clock? What kind of accuracy could the best equipment of my day produce? I'm guessing the limit might be how well one could divide a large circle into equal parts?
Thanks for any help.
Thanks for any help.