This gets into colloid chemistry, which is a very interesting subject, but can get technical, depending on your background. Basically, the yellow color comes from certain wavelengths of light being absorbed by the silver ions, so the opposite color appears. It has to do with the size of the particles- or rather the mix of ions and particles, and the effect is not dependant on the element, but on the size.

that is my understanding at any rate. The yellow color denotes a slightly larger size predominating in the jar, but it is still very very tiny, and also effective. I would hesitate to use a strongly golden colored solution, but a with a faint yellow I would not hesitate.

kathryn

On Jun 25, 2008, at 7:29 AM, Mary Ellen Murphy wrote:

There are several different answers as to yes or no the the using the yellow
sivler.  Anybody really know for sure
Mary Ellen


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