Dr Needham's fourth volume traces the development of physics and physical technology in ancient and medieval China. It is conveniently divided into three separate parts, the present volume, IV:1, dealing with physics as such, IV:2 with mechanical engineering and IV:3 with civil engineering and nautics.
Joseph Needham was a British biochemist, historian and sinologist known for his scientific research and writing on the history of Chinese science and technology. He was elected a fellow of the Royal Society in 1941, and a fellow of the British Academy in 1971. In 1992, Queen Elizabeth II conferred on him the Companionship of Honour, and the Royal Society noted he was the only living person to hold these three titles.