Let's see if this article <http://gizmodo.com/scientists-observe-ball-lightning-in-nature-for-the-fir-1504306477>helps. I put the article into a hotlink. Here it is as a Tiny URL: *https://tinyurl.com/kcfh2uc <https://tinyurl.com/kcfh2uc>* *Dave* _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla