Over the past 4 decades Dr. Heimerl led a multifaceted professional life, earning a Ph. D. degree in physical-chemistry, next studying the stability of the Martian atmosphere, and then publishing in the fields of: physics and chemistry of the earth’s upper atmosphere, modeling ozone combustion, and muzzle flash chemistry and its suppression. He published a history and a detailed understanding of the physical and chemical mechanisms involved in “Muzzle Flash and Blast”. Subsequently, Dr. Heimerl led a team to develop a low vulnerability, large caliber gun propellant. Then he led a second team to desensitize ammonium nitrate. Further, using well-known mathematical techniques, test-retest visual acuity measurements using a Snellen eye chart can be made more precise by up to a factor of two. This effective Snellen fraction tool is posted on the Salus University web site at: www.salus.edu. In an effort to improve the general understanding of basic arithmetic, i.e., a knowledge of addition, subtraction, multiplication, division, squares, and square roots, Dr. Heimerl authored this monograph: Basic Arithmetic & Algebra. A Focused Review, whose focus is the solution to the quadratic equation.