Hi all and thanks to everyone who responded to my questions. All very
interesting.
John I have never see a spiral clock face. Very interesting thanks. Learn
something every day.
That had me thinking. I think I have seen somewhere where there is a spiral
sundial. Where a spot of light marked the time on the numbers on the spiral.
Wonder if it was a Golden Ratio spiral.
Have fun,
Roderick Wall.
----- Reply message -----
From: "John Carmichael" <jlcarmich...@comcast.net>
To: "'rodwall1...@gmail.com'" <rodwall1...@gmail.com>, <sundial@uni-koeln.de>
Subject: Golden Ratio and Sundials
Date: Sat, Jun 24, 2017 2:34 AM
Rod:
Do a goggle image search on “spiral clock face”. A similar sundial face design
could be made. Time marks and numerals could be adjusted to be in the proper
positions to be a functional sundial.
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of
rodwall1...@gmail.com
Sent: Wednesday, June 21, 2017 2:04 PM
To: sundial@uni-koeln.de
Subject: Golden Ratio and Sundials
Hi all,
I have been reading a book on the Golden Ratio which is 1.6180339887. It
describes how the Golden Ratio describes how the spiral of a sea shell is
produced. And how nature uses the Golden Ratio on the size of leaves etc.
Does anyone know if sundials have ever been produced useing the Golden Ratio.
The Golden Ratio goes back in history so one wonders if it was ever applied to
sundials.
The book describes that the short and long sizes of credit cards are close to
being the Golden Ratio.
LongSide/ShortSide = Golden Ratio.
Regards,
Roderick Wall.
---------------------------------------------------
https://lists.uni-koeln.de/mailman/listinfo/sundial
