I am grateful and relieved to know that my concerns were misplaced! Or maybe not as I adore catastrophic errors. They teach us so much! Indeed they teach us almost everything. I won't, well ~ maybe I will, mention the Hubble telescope and a failed Mars lander. Closer to home ~ the Millennium Bridge. It would, of course, have been better if the video (to which I referred) had also made the point about the EOT adjustment. But I suppose that in a short video even I can forgive. Regards Andrew P.S. As to Oscar ~ I am still in something of a state of shock/recovery. I promise a considered reply.
_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of JOHN DAVIS Sent: 15 July 2008 14:08 To: John Goodman; sundial@uni-koeln.de Subject: RE: Solar synchronizer (Andrew Pettit) Dear colleagues, You may be interested to know that the 3-D cam for the EoT mechanism (looking like a piece of modern sculpture) was on show at the 2008 BSS Conference at Latimer. A photograph of it is in the report of the conference in the BSS Bulletin, 20(ii), June 2008. Regards, John Davis ---------------------------- John Goodman <[EMAIL PROTECTED]> wrote: The equation of time is not ignored by the Long Now clock. In one of their FAQs they state: > The clock is projected to be accurate to within one day every 20,000 > years, but just in case it isn't, a solar synchronizer will correct > the time shown on the clockface. A lens on top of the clock will > advance or retard the display by phase-locking to the local noontime > sun. The digital mechanical design also allows the clock to adjust > for leap days, leap years, leap centuries-even for the precession of > the equinox The mechanism for accommodating the EOT is described and pictured here: http://www.longnow.org/press/articles/ArtSoftwareDev.php#sidebar Dr J Davis Flowton Dials
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