In a message dated 3/27/01 0:38:19 AM EST, [email protected] writes:

<< The milky appearance also occurs when the concentration of particles is 
high and the particle size is very small.
 
 
 frank key
  >>

Frank: How do you explain the milky appearance for very small particles, or 
very large ones, for that matter, if, as Marshall says, light from the 
visible part of the spectrum of not adsorbed in either case? Roger


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