Letter from Louis Essen to Carl A Zapffe: Harry Ricker Commentary
Louis Essen
Keywords: Louis Essen, special relativity, Carl Zapffe
This paper presents a transcription of a letter from Louis Essen to Dr. Carl Zapffe. It briefly summarises Dr. Essen's criticism of special relativity in a few lines. Its most memorable statement is that relativity is "not a theory". A commentary by Harry Ricker puts Dr. Essen's letter into perspective.
