John is a Senior R&D Engineer at Modern Hydrogen. He has twenty years of experience working in the field of vacuum tubes and cathodes, ranging from CRT manufacturing to field emission to mass spectrometers and ion thrusters. John is a coinventor on four patents and coauthor on six publications. He has helped startups bring products from concept to prototype to market and has designed and assembled hardware that has flown to Venus! He holds a BS in physics from Truman State University.

John’s interests include planetary science, movies, science fiction, and travel. He enjoys spending time with his family hiking, canoeing, and visiting waterfalls.