This book was published in 1961, in which Dr. Mustafa Mahmoud deals with the theory of relativity by the physicist Albert Einstein, explaining its dimensions in a way that simplifies it and brings it closer to the understanding of non-specialized readers. He also explains the scientific revolution that Einstein brought about Newtonian physics, changing the way we understand the universe. Einstein believed The unity of the universe, that there is a simple law that controls it, and that the human mind is capable of discovering this law that includes space and time, mass and movement of objects, and the fourth dimension that goes beyond the three dimensions that physics knew before the theory of relativity.
