Upon conquering Special Relativity, Albert Einstein spent almost a decade trying to integrate it into the framework of gravity. His breakthrough was to realize that "A falling man doesn't feel his own weight." This set him off to reconfigure gravity not as a force, but rather as the pure geometry of space and time. This is the eighth of the videos in my new series of Cosmology. I'm going through Dr. Barbara Ryden's textbook "Introduction to Cosmology". I used this textbook at William Paterson University. This course will cover the current state of the science of Cosmology. Here are the topics of this video: Introductory Cosmology Chapter 03: Newton versus Einstein Section 03: The General Way of Einstein Some things covered: Defining The Equivalence Principle Extrinsic Versus Intrinsic Curvature The Weak Equivalence Principle The Einstein Equivalence Principle Local Lorentz Invariance Local Positional Invariance The Einstein Equivalence Principle Metric Theories of Gravity The Strong Equivalence Principle Thought Experiments for the Einstein Equivalence Principle Gravitational Redshift The Pound-Rebka Experiment Tests of the various form of the Equivalence Principle Curved Spacetime and Geodesics Textbook: Get Preview Content!