I have no reason at all to want to know these things or have I? Is it time for me to develope an inferiority complex?:D I still say that formula is of little practical use to the average person, to a scientist may be but not us yokels.

It was really just for entertainment, that’s all. The lecturer in the You Tube clip is very smart and knows his beans, but he talks too fast that even most science boffins would have to watch the clip several times over to make head or tail of what he is trying to illustrate. If I was in his class, I would have been completely lost if there wasn’t the means to replay his lecture. 😀