Electromagnetic radiation can only affect CS if it is absorbed. Crystal clear CS will therefore be unaffected by visible light, but yellow CS can be degraded by blue light (which is what yellow absorbs). Now clear CS will generally absorb ultra violet radiation, and can be affected by uv light. However most glass absorbs UV light, so it is blocked from affecting it.

Marshall

8/12/2018 3:40 PM, Jean Baugh wrote:
Hi Ode,

Do you think the glass is stopping the reaction of the sun on the colloidal silver? If you know why, would you please share with us?

Once read a very interesting article about wearing glasses, caused blocking some benefits of the sun.

Thank you,

Jean

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On Aug 12, 2018, at 4:36 AM, Ode Coyote <silverpuppy1...@gmail.com <mailto:silverpuppy1...@gmail.com>> wrote:

Pure silver is not sensitive to light, several silver *compounds* such as silver chloride and silver carbonate ARE. I've left batches of EIS on a sunny windowsill in clear glass for 5 years and they did not change at all. The batches that were not well sealed against air eventually oxidized and turned yellow, some of that yellow plated onto the glass.
Hydrogen Peroxide destroys that particular form of silver oxide.
There are 5 different forms of silver oxide possible, one of which is made by exposure to Hydrogen Peroxide. Take a black electrode and soak it in H2O2...it will become silver dust white very quickly.
Leave it there for many hours and it will turn black again.
Ode