Gravity, Black Holes, and the Very Early Universe: An Introduction to General Relativity and Cosmology (Repost)

In the early 1900s, Albert Einstein formulated two theories that would forever change the landscape of physics: the Special Theory of Relativity and the General Theory of Relativity. By 1925, quantum mechanics had been born out of the dissection of these two theories, and shortly after that, relativistic quantum field theory. We now had in place some important ties between the laws of physics and the types of particle interactions the new physics was uncovering.
Gravity is one of the four types of forces that are found throughout the universe. In fact, although it is a relatively weak force, it operates at huge distances, and so must be accounted for in any cosmological system. Unfortunately, gravity continues to defy our neat categorization of how all the forces in nature work together.

Professor Tai Chow, from the California State University at Stanislaus in Turlock, lays out for us the basic ideas of Einstein, including his law of gravitation, explains the physics behind black holes, and weaves into this an absorbing account an explanation of the structure of the universe and the science of cosmology, including presenting the various models of the Big Bang, the Inflationary Universe, and the Unification of Forces. Travel with him down this engaging path to reach some fascinating conclusions, which raise even more interesting questions for the future of astronomy and physics.

Says Dr. Mark Silverman of Trinity College in Hartford, Connecticut:

"The author … introduces the mathematical methods essential to understanding and applying general relativity…but leaves to more advanced references derivations that a beginning student would likely find overly long and tedious…. In this way the student can concentrate on learning physics ….A strong point [is] the comprehensive discussion of the physics of black holes. Here again the author has hit just the right level of presentation: sufficient mathematical detail to demonstrate …the physical attributes of black holes…yet not so much mathematics as to lose track of the physics in an impenetrable forest of equations. An equally strong point is the discussion of the most exciting contemporary issues in astrophysics apart from black holes…"

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