I apologize for my original
explanationregardingthe perceived edge of a shadow, it was
wrong. The corrected first paragraph should read as follows:
On a brightday with
clear skies, the perceived edge of a shadow appearsnear
theinner edge of the penumbra (near the umbra.)
With
Pete:
I'd love to test what you said about the cloud shadow shift
but we haven't seen clouds around here for awhile.
John
John L. Carmichael Jr.Sundial Sculptures925 E.
Foothills Dr.Tucson Arizona 85718USA
Tel: 520-696-1709Email: [EMAIL PROTECTED]Website: http://www.sundialsculptures.com
I apologize for my original explanation regarding the perceived edge of a shadow, it was wrong. The corrected first paragraph should read as follows:
On a bright day with clear skies, the perceived edge of a shadow appears near the inner edge of the penumbra (near the umbra). With increasing
