Ye Old Shoppe

T-shirts and prints

Really, there is nothing old fashioned. Most of the merchandize is available at

The t-shirts with shipping run about $30. That is not a great price. The reason is that these are created one at a time off of a high quality t-shirt printer instead of doing a run of a few hundred using screen printing technology. RedBubble overs a variety of items with the images which have a range of prices. I am taking ~$4/shirt. Note that I have spent on the order of $60k over the years doing the research required to generate the content.

My Digital Books

From, a PDR, epub, or Mobi file:

Doing Physics with QUaternions, $9.99

Doing Special Relativity with Quaternions, $1.99

Amazon Books

The Theoretical Minimum: What You Need to Know to Start Doing Physics
Leonard Susskind and George Hrabovsky

Quantum Mechanics: The Theoretical Minimum
Leonard Susskind and Art Friedman

Special Relativity and Classical Field Theory: The Theoretical Minimum
Leonard Susskind and Art Friedman

Spacetime Physics
Edwin F. Taylor and John A. Wheeler