Pete,

You'll have to use the Mie solution to Maxwell's equations to solve that. The following online calculator will assist you.

http://www.lightscattering.de/MieCalc/eindex.html

Dave


At 01:03 AM 7/28/2008, you wrote:
Dear cs'ers,
I recently had the opportunity to play with a spectrophotometer.Using the instruction book procedures gave the following readings: I took readings at wavelengths for blue(470nm),green(555nm),yellow(585nm),orange(610nm) and red(650nm).The results indicated a figure for Absorption(A) and Transmission(T) %.
Blue;A=0.143 T=71.8
,Green;A=0.136 T=73.2
 Yellow;A=0.118 T=75.9
 Orange;A=0.115 T=76.8
 Red;A=0.093 T=80.7
My question for those familiar with this apparatus is;
What particle size could be ascertained from these results?
My cs production method uses 27v and halts at 8mA using spiral shaped electrodes spaced 25mm apart.Results are a clear solution (no colour) but a slight tyndall effect observable via high power(1w) leds
Thank you for taking time to reply.
pete




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