Dr. Eynian's Chatter Video

​I failed to cite the source of the animation I used on an earlier post because I couldn't remember were I found it. Fortunately, Dr. Mahdi Eynian of University West in Sweden saw the post and contacted me. He reposted his video along with his very informative narration on YouTube. Take special note of his description of process damping. Thanks Dr. Eynian, I am, as we say in America, very red-faced.