Letters from Grenada

confessions of a reformed tourist

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Posts tagged equinox

the sunwheel project

Yesterday was – as I already mentioned – the autumnal equinox, and while I was a work my mom took Jack to see the “Stonehenge” at UMass Amherst.
It’s called The Sunwheel project, and it was dreamed up by Professor of Astronomy Judith S. Young. She writes:
Through the Sunwheel, which concretely illustrates the variations in the [...]

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on the equinox

The two revolutions, I mean the annual revolutions of the declination and of the centre of the Earth, are not completely equal; that is the return of the declination to its original value is slightly ahead of the period of the centre. Hence it necessarily follows that the equinoxes and solstices seem to anticipate their [...]

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