6. The principle of equivalence.

MIT General Relativity, Spring 2020 Instructor: Scott Hughes View the complete course: YouTube Playlist: Introduction to the principle of equivalence: freely falling frames to generalize the inertial frames of special relativity.  Two important variants of the equivalence principle (EP): The weak EP (one cannot distinguish free fall under gravity from uniform acceleration over ’sufficiently small’ regions); the Einstein EP (the laws of physics in freely falling frames are identical to those of special relativity over ’sufficiently small’ regions). License: Creative Commons BY-NC-SA More information at More courses at Support OCW at We encourage constructive comments and discussion on OCW’s YouTube and other social media channels. Personal attacks, hate speech, trolling, and inapp