Presentation copy of ‘Über die spezielle und die allgemeine Relativitätstheorie’ (On the Special and General Theory of Relativity), by Albert Einstein (1879-1955), published in Braunschweig in 1917. The page is dedicated by Einstein, with an inscription by the recipient Hans Muhsam, which, translated, reads: ‘This copy is the first one which left the printer. It was sent to me by Prof Einstein the moment he had received it, and shortly before I went to France with the army. Hans Muhsam, Berlin, at present at the French Front, April 1917.’ Einstein’s special and general theories of relativity posited the concept that time does not exist at the same rate for everyone and everything. Special Relativity produced the equation which expresses the equivalence between matter and energy: E=mc squared.

Picture Reference: 10411847
Subject: PERSONALITIES > Historical Personalities > Mathematicians
Credit: Science Museum Library

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