Posted by Jeff Shaw on June 13, 2003 at 21:04:12:
In Reply to: 8PM last night... posted by Ross-O on June 13, 2003 at 14:41:13:
Hey Board...
Is there a method scientific or otherwise, for determining visability?
How does that differ at night?
I remember my kid telling me about lowering disks in the water at CIMI...