At 11:05 AM 11/22/02 +0000, you wrote:
Hi all
I was wondering if someone could explain the
reason why the following occurs:
With the use of a pola you can see a
rainbow in water fountains? Is it the light
reflected off the water spray?
You'd see that anway, just the polarizer increases the contrast
When you use a pola shooting at height (from an
aircraft) you can see strong colours on the ocean
below...
This is due to cross polarization of the window, windows are made of
plastics, and the internal stresses align molecules and polarize the light
in different colors. Is pretty much the same you'll see watching cars on
the street with a polarizer filter, some will look pink and some others
blue depending on how the glass was made and wether it has a film of plastic.
Many thanks
Steve.
Pablo Coronel
Ph.D. Candidate
Food Science Department
North Carolina State University
Room 39 Schaub Hall, Box 7624
Raleigh, NC, 27695
Phone (919) 515-4410
Fax (919) 515-7124
e-Fax (419) 818-7590
e-mail pcorone@unity.ncsu.edu
http://www4.ncsu.edu/~pcorone
