David Tytler was an avid amateur astronomer as a child; lying outside on the ground on winter nights counting meteors. He obtained a BSc and PhD in astronomy from University College London and used the Palomar 200 inch telescope in San Diego county while at CalTech. He was a Professor of Astronomy at Columbia University, a Sloan Fellow and since 1989 a Professor of Physics at UC San Diego where he has taught introductory physics including waves to thousands of undergraduate students. Waves are a part of classical physics which has been has been well understood for over a century. Waves are transient disturbances that carry energy and information, large distances through matter and space. David has been a scientific consulting collaborator with Jacob Jonas The Company since 2015.