Sarah Schechner and Sundials: Here is a link to a picture of the Porter sundial, with details of its fate.
http://palomarskies.blogspot.com/2009/04/russell-porters-missing-sundial.html Gordon Uber http://palomarskies.blogspot.com/2009/04/russell-porters-missing-sundial.html ---- "Schechner wrote: > I agree that it looks like a cylindrical equatorial dial, but it is only > vaguely similar to Porter's. Look at the difference in the gnomon and its > alignment. I'll try to dig up a better photo of Porter's dials. > > Cheers, > Sara > > -----Original Message----- > From: LJ Coletti [mailto:l...@groknet.net] > Sent: Thursday, May 20, 2010 4:04 PM > To: Schechner, Sara > Cc: sundial@uni-koeln.de > Subject: Re: Russell Porter Sundial? > > Sara, > > That looks similar to a cylindrical equatorial dial done by Porter while > at CalTech. The dial incorporated EoT correction and was, apparently, > stolen (URL below). > > http://pr.caltech.edu/periodicals/caltechnews/articles/v42/sundial.html > > Luke Coletti > > On 5/20/2010 12:34 PM, Schechner, Sara wrote: > > I have never seen this form associated with Russell Porter, but will check > > further. However, I think we need more information to tell the > > conventional type. For example, is the long rod the gnomon, and is it to > > scale with the arc? What do the hour lines look like? Does the sundial > > include both wooden objects set up as a pair, or just a single one? > > > > Sara > > > > Sara J. Schechner, Ph.D. > > David P. Wheatland Curator of the Collection of Historical Scientific > > Instruments > > Department of the History of Science, Harvard University > > Science Center 251c, 1 Oxford Street, Cambridge, MA 02138 > > Tel: 617-496-9542 | Fax: 617-496-5932 | sche...@fas.harvard.edu > > http://www.fas.harvard.edu/~hsdept/chsi.html > > > > > > > > -----Original Message----- > > From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On > > Behalf Of > > Sent: Thursday, May 20, 2010 2:45 PM > > To: sundial@uni-koeln.de > > Subject: Russell Porter Sundial? > > > > Friends, > > > > Is there a conventional name (like horizontal', equatorial', polar' and > > so on) for the sundial constructed as shown below? > > > > Am I right thinking that the name of this construction is "Russell sundial"? > > I mean Prof. Russell Porter, the Palomar Mountain Observatory. > > > > Any help, please. > > > > Aleks > > www.sundials.ru > > > > > > --------------------------------------------------- > > https://lists.uni-koeln.de/mailman/listinfo/sundial > > > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
