Can somebody please shed light on a problem I have encountered with the standard graph of the Equation of Time.
I have used the routines by Fer de Vries to generate the graph and the print outs check out perfectly with all standard references. They all indicate that at this time of the year the correction for the EQT is around +(plus) 7m 42sec - I checked this with the Luke Coletti web site this morning ;-) Now the problem is that all Australian printed references I have checked suggest that this figure should be - (minus) 7m 42sec. My understanding is that the EQT is the EQT irrespective of our position on the globe. I have checked the following so far and all seem to be incorrect: "Sunshine and Shade in Australasia" - CSIRO Tech Report 92/2 page 13. "Sundials Australia" second edition by Folkard, M. and Ward, J. page 58. "Solar Geometry" PLEA Note 1 by Szokolay, S.V. page 7. Steve Szokolay does however acknowledge that "..some texts show the curve with opposite signs.." The EQT graph printed out for this location by Francois Blateyron's program "Shadows" also seems to be "incorrect". Can somebody help me with this one please! John -- John D Hall School of Architecture - University of Tasmania Launceston TAS 7250 - AUSTRALIA Tel (+61) 0363 24 3502 Latitude 41d 26m 1s South Fax (+61) 0363 24 3557 Longitude 147d 7m 49.5s East ---------- >From: "Rudolf Hooijenga" <[EMAIL PROTECTED]> >To: "Sundial List" <[email protected]> >Subject: Summary of special bulletin 99.3 >Date: Fri, 24 Sep 1999 6:48 AM > > Hello fellow dialists, > > I have placed a summary of Bulletin 99.3 of De Zonnewijzerkring on my web > page. > This special bulletin consists of a paper on Greek conical sundials, and a > recapitulative supplement on "Sundials in The Netherlands". > I will translate the entire Jan Kragten paper later. However, amateur that I > am, I have to divide my time between several issues.. it will be a while. > > > Rudolf Hooijenga > [EMAIL PROTECTED] (home) > [EMAIL PROTECTED] (office) > >
