Danny Hillis' project for a Millennium Clock sounds very interesting.
His mention of precession really has me wondering now what long term
effect the earth's precession will have on current sundials.
Specifically,
How is the earthÂ’s precessional axis oriented relative to the
earthÂ’s polar axis and to the ecliptic?
If the earth's axis precesses once every 25,860 years, does that
mean that 13,000 years from now it will be summer in the northern
hemisphere in January?
How does this affect the Equation of Time?
Any answers to these questions, or any idea where I can find FAQ's on
precession?
Thanks much! Pete Swanstrom.
