In a message dated 4/9/2005 11:58:53 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
Hi Anselmo &all,
In my webpage www.fransmaes.nl/sundials/ - "Analemmatic" - "extra info" -
"The human scale", I calculated the shadow paths for a 2 meter gnomon (human
with hands above head) in dials of 6 and 10 meter major axis, for latitudes
of 35, 45 and 55 deg.
I find it no problem to extend the symmetry line through my shadow
accurately by half my height (the summer case). In fact, I find it more
difficult to make an accurate reading when my body's shadow (in winter) is
falling on the ellipse.
>From my graphs and these considerations, I would say that 7 meter is about
the maximum. When you set the date scale on a 30 cm step, you could add 15%,
making 8 m (25 ft) the maximum.
Best regards,
Frans Maes
