A little physics lesson

You may or may not remember I left these guys dangling sometime before Xmas last year. This is how they got there.

Happy New Year...

Well, this is pretty much a little picture of the holiday I just had. Except I haven't actually drunk a pina colada since I was about 18. The break had a good effect on my head so I thought I'd start on an optimistic note. It's good to be back.