On Tue, 23 Jul 2019 at 00:16, Mark Sims <[email protected]> wrote: > Try teflon plumbers tape.
That would have quite an air resistance, so I would have thought it required more work, and hence energy to move the ball. Dave > > -- Dr. David Kirkby, _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
