A colleague at work tested two batteries by bouncing them in front of me. Had he merely told me about the bounce effect I would have been extremely skeptical, s

A colleague at work tested two batteries by bouncing them in front of me. Had he merely told me about the bounce effect I would have been extremely skeptical, so I'm glad he didn't give me the opportunity to get egg on my face! I found and submitted this article when looking for the physical basis of the effect afterwards. I guess I was one of that day's lucky 10,000! https://xkcd.com/1053/ https://xkcd.com/1053/