It was August 20,2020

Yes, it was a 20-20-20 day.

Physics One is now for sale, paperback, for under $20. For the last year and a third I’ve been working on physics writing, notably Physics One and a review volume on computer simulations of polymer dynamics, so the gears have to shift a bit before the pace picks up.

I am also working on a volume listing of board games on military matters. It has some time to go.