Re: Golden Ratio and Sundials

On Wed, Jun 21, 2017 at 5:27 PM, Brooke Clarke wrote: > Hi Roderick: > > I also have a book on this number that makes the case that there is no > such ratio. > Your book is mistaken. If A/B = (A+B)/A, then A/B is the golden ratio. If a line-segment is divided into two

Re: Golden Ratio and Sundials

Hi Brooke, Thanks, I can see that your information is from Da Book. Roderick. - Reply message - From: "Brooke Clarke" To: "'Sundial Mailing List'" Subject: Golden Ratio and Sundials Date: Thu, Jun 22, 2017 7:27 AM Hi Roderick: I also have a

Solstice sundial

This dial tells you that it is the solstice. https://apod.nasa.gov/apod/ap170621.html --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: Golden Ratio and Sundials

Hi Roderick: I also have a book on this number that makes the case that there is no such ratio. For example if you look at a photograph of something where do you put the markers to make the measurement? It's interesting that 4x5, 8x10 film cameras have aspect ratios of 1.25. 35mm film

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