Dear Peter, In answer to your questions:
i) A correction for longitude is not necessary since the sundial display can be rotated freely on the end of the angled mounting bar (which will remain positioned parallel to the axis of the earth), and thus can be set to any desired time, including local time, mean time, and daylight savings time. There is no built-in correction for the equation of time. ii) Currently we only have sundials for the northern hemisphere. Perhaps we will build a version for the southern hemisphere soon (with a modified mask that contains the numbers in reverse order), but at this point we have no immediate plans to do so. Daniel -----Original Message----- From: Peter Mayer [mailto:[EMAIL PROTECTED] Sent: Thursday, May 10, 2001 8:51 PM To: '[email protected]' Cc: Scharstein, Daniel Subject: Re: Digital sundial available! Dear Daniel, > >I am pleased to announce that our digital sundial is finally available. >I hope that many of you will find this interesting, and I look forward to >any feedback you may have! It's most interesting. I do have two questions. i) It looks as though the dial shows local apparent time. Are you including a correction for longitude when you construct them? (I imagine that correcting for the EoT is out of the question) ii) do you have plans to make versions for the Southern Hemisphere? Peter Mayer ---------------------------------------------------------------------- Peter Mayer | [EMAIL PROTECTED] Politics Department | University of Adelaide | 'phone:+61.8 8303 5606/5610 Adelaide, SA 5005 | FAX: (+61.8) 8303 3446 AUSTRALIA | ----------------------------------------------------------------------
