1 An Analysis of Einstein’s Second Postulate to his Theory of Special Relativity Edward G. Lake* Independent Researcher Racine, WI USA (Dated: May 30, 2017) Abstract An analysis of books, presentations and scientific papers about Albert Einstein’s Second Postulate to his Theory of Special Relativity shows that there is a fundamental disagreement between what Einstein wrote and how what he wrote is being interpreted by mathematician-physicists and taught in colleges and universities around the world. An analysis of the evidence shows that Einstein was correct and the vast majority of interpretations and teachings are incorrect. *sole author – email: detect@outlook.com