Einstein Explains His Famous Formula, E=mc², in Original Audio

Last week we played for you the only known record­ing of Sig­mund Freud’s voice (1938). Now it’s time to revive the voice of anoth­er intel­lec­tu­al giant, Albert Ein­stein. In this record­ing, the physi­cist offers the briefest expla­na­tion of the world’s most famous equa­tion, E=mc2. When was this record­ed? We’re unfor­tu­nate­ly not sure. Let’s just say some­where between 1932 (a date Ein­stein men­tions in the clip) and his death in 1955. Some­where in those 20+ years, give or take a few. Don’t miss the recent­ly-opened Ein­stein archive and many free Physics cours­es in our col­lec­tion of Free Online Cours­es from top uni­ver­si­ties.

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