Contact and tip info

Doug Sweetser email: twitter: visualphysics

If it is really important to you, a Google/Zoom meeting can be arranged.

Web sites

  •, the mothership of my private research project.

  • Numbers 101, a visual introduction to space-time numbers, aka quaternions.

  • Measurement 101, a site dedicated to my new proposal for quaternion gravity

  • has a collection of analytic animations generated with a user-hostile set of tools I wrote.

Tip Jar

This is a part-time job for me that eats real money (~$60k over 2 decades).$VisualPhysics