Matthias Heidrich, PhD, is the author of several reference books on physics and mathematics. He studied physics and mathematics at the University of Heidelberg. After five research years at CERN in Geneva, he joined Swisslife in Zurich in 1997 to dedicate himself to insurance mathematics. In 2002, Matthias Heidrich became a teacher for physics and mathematics at AKAD in Zurich. Since 2004, he has taught physics and related subjects at Kantonsschule Wil (Switzerland) in German and English language.