Roger Bailey wrote:

(snip)
Similarly you can calculate the Sub-style Height, the angle of the gnomon to
the wall, as Sin SH = Cos Dec x Cos Lat. But this is not how Zarbula did it.
He only had available a stick, some string and the sun. I will leave that as
a homework exercise.




Hi Roger,

Are you going to leave us dangling, or are you willing to tell us how Zarbula found SH with a stick, some string and the Sun?

Best wishes,

Mac
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