In 1916, with general relativity barely a year old, Albert Einstein sat down to explain his theory to readers with no more than ‘a standard of education corresponding to that of a university matriculation examination.’ Relativity: The Special and General Theory is the result: trains and embankments, falling lifts and light rays, building step by step to curved spacetime itself.
No populariser has ever matched the theory’s own author for authority, and few for clarity. Download the free EPUB and take the twentieth century’s greatest idea from the source.