The Gravitation Theory Review
by Alexander G. Kyriakos
Publisher: viXra 2016
Number of pages: 104
In this book we will survey various alternative approaches to the problem of gravitation pursued around the turn of the last century and try to assess their potential for integrating the contemporary knowledge of gravitation.
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by James B. Hartle - arXiv.org
Notes from the lectures on Quantum Cosmology and Baby Universes. The lectures covered quantum mechanics for closed systems, generalized quantum mechanics, time in quantum mechanics, the quantum mechanics spacetime, and practical quantum cosmology.
by Benjamin Crowell - LightAndMatter.com
This textbook is a nonmathematical presentation of Einstein's theories of special and general relativity, including a brief treatment of cosmology. It is a set of lecture notes for the author's course Relativity for Poets at Fullerton College.
This book examines the evolution of the principle of relativity in its classical, special, and general incarnations, with the aim of showing how it has repeatedly inspired advances in our understanding of the physical world.
by Albert Einstein - Princeton University Press
A condensed unified presentation intended for one who has already digested the mechanics of tensor theory and physical basis of relativity. Einstein's little book serves as an excellent tying-together of loose ends and as a survey of the subject.