The product is the first edition by this publisher of Albert Einstein's book "Grundzüge der Relativitätstheorie" published in 1956. Written in German, the book covers the fundamental principles of the theory of relativity. As a seminal work by one of the most renowned physicists in history, it provides a comprehensive and accessible exploration of the topic of relativity, making it a valuable resource for both students and experts in the field.

Einstein's revelation of general relativity, concisely presented in sixty-four pages of perhaps the most intense mathematical reasoning in the history of human thought. This most famous of all scientific findings finally discredited Isaac Newton's long-held theory that universal gravitation is based on an attractive force between bodies of mass. Einstein, instead, credits the new concept of "curved, four-dimensional space-time" as the real basis for the behavior of our solar system. Einstein's hypothesis was proven by Sir Arthur Eddington on the total eclipse expedition to the island of Principe in 1919. Eddington's results from Principe stimulated world-wide interest in this then-unknown physicist named Albert Einstein and turned him, literally overnight, into the most recognized person on the planet.