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Time and timekeeping
On Wednesday, November 1, 2017 at 1:02:26 AM UTC-6, Gerald Kelleher wrote:
Celestial sphere ideology is always the same, it assigns relevance to circumpolar motion and models the motions of the Earth on the assertions even though they defy experience. Yes, the movement of the stars around Polaris is certainly not as relevant to the experience of our daily lives as the 24 hour cycle of night and day. But just as the distinction between Ptolemy and Copernicus isn't evident in normal experience, why should the physical dynamics of the Earth be in our ordinary experience either? The Earth beneath my feet doesn't feel like it's moving at over 1,000 miles per hour! The Sun's apparent motion in the sky is subject to the Equation of Time, but stellar circumpolar motion is even and regular. So it is the latter that is a simple motion - and the former is a compound motion. The Equation of Time tells us that about the apparent Sun just as retrogrades tell us that about the apparent motions of the planets. They don't even do this anymore as they conjured up a new proposal that the Earth turned 360 degrees in 24 hours but back in the year 1820 as the website Martin Brown referenced. No, you're just drawing an unwarranted conclusion from an oversimplification. John Savard |
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