This is a ball and stick model. The large, dark colored balls are carbon atoms. The
smaller white ones are hydrogen. The sticks represent bonds. A chemists tinker toy set.
Between the two carbon atoms clostest to this text is a bond a different color, this is how the double bond is represented. As the image is rotated in the succeeding pages one can see that atoms hidden behind other atoms appear.
I have found that Safari does not render well some of the pages. Use FireFox. I have only tested this with a Mac
I have made some progress in animating the sequence of graphic images in this and the following pages.
Interestingly enough some drama inserted itself into my path as I was taking my laptop to a local meeting of a group of friends of mine at Schreoeder's on Front Street in San Francisco. A replay of a movie I had been in before which I talk about elsewhere