The book "Calculation The Exact Value Of Gravitational Constant" by Abed El Karim Abou Layla offers an innovative perspective on determining the gravitational constant G. Despite the over three-hundred-year history of Newton's law of universal gravitation, the exact value of G remains an unresolved problem in physics. This academic book presents a theoretical law that allows for the determination of G in a simple and comprehensible manner. This represents a significant advancement as it links three different physical disciplines – mechanics, electromagnetism, and thermodynamics. The book is aimed at both experienced physicists and laypeople, making it accessible to a wide audience. It is of particular importance for universities and research centers, including institutions like NASA.