Barry Gershenfeld wrote: > I once made a power resistor (DC) using a glass of salt water and two > wires. Later, someone told me the reason the water was turning green > was that I was generating chlorine! Far more likely the green color came from the copper that was removed from one of the electrodes. Most copper compounds are bluish to greenish when dissolved in water. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .