The memoirs of Louis Essen : father of atomic time /National Physical Laboratory & Ray Essen.

Memoirs of Louis Essen (1908-1997), an experimental physicist who worked at the British National Physical Laboratory from 1929 to 1990. Primarily known as the inventor of the Atomic Clock (in 1955) he also worked on microwave radio frequency testing during the Second World War, oscillators, measuring the speed of light and radio time (and many more). Later in his career he became a critic of Einstein's Relativity which did not please the wider scientific community. The book contains written memoirs by Essen but also discussions by the author expanding on Essen's notes. Contains many colour images and diagrams of physics paraphernalia.