Behold the almost completed manuscript for the physics text. It finished at 420 pages, around 175 figures, and a lot of words.

I would estimate that it will be available in August if not sooner.

And note bargain prices on two of my books:

Mistress of the Waves — now $1.00 amazon.com/dp/B008J4NLWI
Designing Wargames – Introduction — now $1.50
amazon.com/Designing-Wargames-Introduction-Studies-Design-ebook/dp/B00JX4EUVO