I've been interested in sundials for a long time but I've never built one. As an engineer by trade, I have some understanding of the math, but never actually having used the equations for a real project my understanding hasn't been tested. :-)
We recently bought a house that has a perfect location for a vertical declining sundial. The wall faces almost directly south - it is 17 deg. off with a bearing of N73W - and faces a school. So I'd like to set up the sundial with the summer vacation marked. I can't find any information on how to calculate the position for a specific date on a vertical declining sundial. I'm at 44°03′07″N 123°05′12″W <http://stable.toolserver.org/geohack/geohack.php?pagename=Eugene%2C_Oregon¶ms=44_03_07_N_123_05_12_W_type:city>. I would appreciate any help getting started. Thanks, --Yan -- o__ ,>/'_ o__ (_)\(_) ,>/'_ o__ Yan Seiner (_)\(_) ,>/'_ o__ Personal Trainer (_)\(_) ,>/'_ o__ Professional Engineer (_)\(_) ,>/'_ Who says engineers have to be pencil necked geeks? (_)\(_) "I worry about my child and the Internet all the time, even though she's too young to have logged on yet. Here's what I worry about. I worry that 10 or 15 years from now, she will come to me and say 'Daddy, where were you when they took freedom of the press away from the Internet?'" --Mike Godwin, Electronic Frontier Foundation --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
