
It's a bit hard to explain what's going on, I sort of understand it.
Here's a low-cylindery version from the other side, I think it's the same but half out of phase.

If you look at it perfectly side on, it barely moves.
edit: like so

( ,
Thu 19 Aug 2010, 21:09,
archived)
Here's a low-cylindery version from the other side, I think it's the same but half out of phase.

If you look at it perfectly side on, it barely moves.
edit: like so
