John, No doubt it could be of some benefit in the business of solar energy panels.
However, I think professionals will know about ER as Energy Rating. I don't know if this is the same as the Efficiency Rating for Sunlight on a plane as we talk about it. Is there a professional in solar panels that reads this list?. Perhaps he or she could give a better answer how they calculate the best position for a panel at a given latitude. Best, Fer. PS The stained glass sundial page is nice to look at. Do you see the flies on some dials? Fer J. de Vries De Zonnewijzerkring mailto:[EMAIL PROTECTED] http://www.de-zonnewijzerkring.nl Home mailto:[EMAIL PROTECTED] http://www.iae.nl/users/ferdv/index-fer.htm Eindhoven, Netherlands lat. 51:30 N long. 5:30 E ----- Original Message ----- From: "John Carmichael" <[EMAIL PROTECTED]> To: <sundial@rrz.uni-koeln.de> Sent: Sunday, July 20, 2003 5:10 AM Subject: Re: Sundial Efficiency Rating > Fer, this is my last question on the Efficiency Rating of solar illumination > idea. > > If you don't think a sundial's ER is a very useful concept in dialing, do > you think would it be a useful tool for designers and installers of solar > energy panels? > > John > > John L. Carmichael Jr. > Sundial Sculptures > 925 E. Foothills Dr. > Tucson Arizona 85718 > USA > > Tel: 520-696-1709 > Email: [EMAIL PROTECTED] > Website: <http://www.sundialsculptures.com> -