A dense concentration of very small particles will reflect more light
even if there is less total material, than a loose collection of big ones.
Ode
At 01:42 PM 2/1/2011 -0800, you wrote:
I just took some photos of the tyndall with a laser pen in the dark of
several liquids. One thing I noticed that was the tyndall of tap water
was not actually that bright. It was pretty dim in fact. The tyndall of
a roughly 10ppm CS that went a little wrong was MUCH stronger. This CS
was still mostly clear but was just borderline starting to turn
yellowish. I always assumed tap water would have strong tyndall. I took
all the photos in mason jars.
~David
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