This evening I was sitting in front of my iMac and under my screen I had 4 Lithium Ion batteries that had been used up. I held one AA battery up and announced, "Hey this battery is much lighter than the regular batteries!" C comes over non-chalantly and says, "Of course it's lighter, it's Lithium. Lithium only has 3 electrons, and 3 protons in it's atomic structure." I agreed with him, "Yeah, Lithium is much lighter than the regular stuff in the other batteries, what was it? Nickel/Cadmium?"
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