Add new comment

Permalink

Hi guys,

First, thanks for a great article.

As I read it, the idea is that an "average" (180cm) person's shadow hits the ellipse at the right time if they stand on the right date.

Just to confirm, this is different to a "traditional" sundial where it is the edge of the gonome that casts the shadow. In an Analemmatic it is the top of the (vertical) pointer that should intersect with the ellipse?

I ask because I want to use this to make a dial with a fixed pointer (the top will be a literal point), but curved hour lines so that given the date one can tell the time.

m.rik.rutter@gmail.com

Filtered HTML

  • Web page addresses and email addresses turn into links automatically.
  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.
  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.