Masse R. Physics. Gravity and Mass 2ed 2023

Textbook in PDF format

What is gravity ? What is mass ? Although the motion of a body under the action of gravity is well understood, at the same time and on a more fundamental level, much about the true nature of the physical force known as gravity has remained a deep mystery. Similarly, no clear definition of mass has emerged despite years of study. It is the purpose of this book to explore the natures of gravity and of mass.
Newton’s Force Law of Gravity.
Poisson’s Field Equation of Gravity.
Einstein’s General Theory of Relativity.
Aether Field Equation of Gravity.
Advance of Mercury’s Perihelion.
The Nature of Mass.
The Nature of Inertia.
Equation of Motion.
Dark Matter.
Appendix A Vector Field Operations.
Appendix B The Greek Alphabet.
Appendix C Vector Identities.
Appendix D Helmholtz’s Vortex Theorems.
Appendix E Physical Constants.
References