Yes, she knows but not without complaint. That lab coat is not her fault, it is mine. Clumsiness in the lab shows how dangerous AgNO3 can be!!! So, I show it to my students in the form of ruined lab coat and clothes. Don't forget the condition of my sweat shirt!!!

Autographs are available. Sorry, I did not think of that (old age I guess). Send me the cover insert from the front of either or both of the DVDs in an envelope and I will return them with autographs.