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At 02:13 AM 4/28/02, Bill wrote:
*** If there were underwater floodlights, then the path length of light
passing through water and then entering your eye is certainly less than the
depth of the pool.
Ooo, good point. I never noticed the halved path length caused by
underwater lighting. I think the light is still decreasing linearly at
those depths, so an internally-illuminated pool 10 meters deep would look
approximately as blue as a top-illuminated pool 5 meters deep.
...
William J. Beaty SCIENCE HOBBYIST website
billb@eskimo.com http://amasci.com
EE/programmer/sci-exhibits science projects, tesla, weird science
Seattle, WA 206-789-0775 sciclub-list freenrg-L vortex-L webhead-L
My attention monitor tripped on this linear suggestion. I assume
by contrast, an exponential decrease of light in an ordinary absorber.
Who will recall the relevant facts for me, please?
Brian Whatcott
Altus OK Eureka!