John Clive Ward (1 August 1924 – 6 May 2000) was a British-Australian physicist. His most famous creation was the Ward–Takahashi identity, originally known as "Ward Identity" (or "Ward Identities"). This celebrated result, in quantum electrodynamics, was inspired by a conjecture of Dyson and was disclosed in a one-half-page letter typical of Ward's succinct style. In their recent book entitled Quantum Electrodynamics, Greiner and Reinhardt state in their discussion of charge renormalisation: "Yet the Ward Identity has a much more fundamental significance: it ensures the universality of the electromagnetic interaction."
In his book The Infinity Puzzle, Frank Close devotes a whole chapter to this Ward creation and entitles it The Identity of John Ward, in which he writes: "Ward Identities lie at the very foundations of renormalization."
Andrei Sakharov classified Ward as one of the "titans" of quantum electrodynamics alongside Dyson, Feynman, Schwinger, and Tomonaga. In this regard, it has been said that physicists have made use of his principles and developments "often without knowing it, and generally without quoting him."
John Clive (6 January 1933 – 14 October 2012) was an English author and actor. He is best known for his international best selling historical and social fiction, such as KG200 and Borossa.
Clive was also known as an actor, who started his career at the age of fifteen. Later he appeared on the West End stage, in plays such as Absurd Person Singular, The Wizard of Oz, Under Milk Wood, The Bandwagon at the Mermaid Theatre, The Winslow Boy, Young Woodley and Life With Father. Clive's character acting has led him to appear in comic and serious roles in films, such as The Italian Job,Yellow Submarine, The Pink Panther Strikes Again, A Clockwork Orange and The Young Indiana Jones Chronicles. He also appeared in two of the Carry on series of comedy films; Carry On Abroad, and Carry On Dick
Other notable film appearances include the Ealing Studios comedy The Magnet, credited as Clive Kendall. In the Beatles' animated film Yellow Submarine, he featured as the voice of John Lennon. His television appearances also included Robert's Robots, Rising Damp, The Dick Emery Show, The Perils of Pendragon, The Sweeney, Great Expectations and The History of Mr Polly. He appeared in the first Wednesday Play, Wear a Very Big Hat, broadcast by BBC 1 in 1964. Clive also featured in, Lady Windermere's Fan, One Way Out and The Ten Percenters.