Explores the transformation of Newton's second law in the context of Einstein's relativity and Lorentz transformations, discussing the equivalence of physical quantities in different inertial frames.
Explores gravitational motion equations, energy conservation, angular velocity, orbits, relativity effects, black holes, time dilation, cosmology, and rotational equilibrium.
Introduces scalar gravity, covering covariant derivatives, Ricci tensor, Einstein Equivalence Principle, and the generalization of Newtonian gravity equations.