A street in Belfast, Northern Ireland, in the city's Titanic Quarter has been named after the physicist John Stewart Bell, who died in 1990 at the age of 62.
John Stewart Bell, the second of four children of John and Annie Bell (née Brownlee), was born in Belfast on 28 July 1928. The families of both his parents were Protestant, his father's family coming from Fermanagh and his mother's from Tyrone. Originally, Annie Bell's family had come from Scotland and John Bell's second Christian name was that of her family. At home, John Bell was always known as Stewart, only becoming John when he went to university. John Bell's family were not well off, his father being sent out to work before he was twelve years old to help the family finances. However, John Bell's father and mother always impressed on John, his elder sister Ruby and his two younger brothers David and Robert the importance of education. Later, David, through evening study, became a qualified electrical engineer and a professor at Lambton College in Canada, writing several very successful textbooks; Robert is now a successful Northern Ireland businessman.
John Stewart Bell (1928-1990) was one of the most important figures in twentieth-century physics, famous for his work on the fundamental aspects of the century's most important theory, quantum mechanics. While the debate over quantum theory between the supremely famous physicists, Albert Einstein and Niels Bohr, appeared to have become sterile in the 1930s, Bell was able to revive it and to make crucial advances - Bell's Theorem or Bell's Inequalities. He was able to demonstrate a contradiction between quantum theory and essential elements of pre-quantum theory - locality and causality. The book gives a non-mathematical account of Bell's relatively impoverished upbringing in Belfast and his education. It describes his major contributions to quantum theory, but also his important work in the physics of accelerators, and nuclear and elementary particle physics.
John Bell’s mother was highly supportive of him and, from an early age, he was extremely interested in physics. However, the family’s lack of money meant that Bell was lucky to be able to get through secondary education and then go on to university. At Queen’s University Belfast, he had excellent teachers, including Karl George Emeléus and Peter Paul Ewald, and performed exceptionally well. He became extremely concerned about the structure of quantum theory and its Copenhagen interpretation, or orthodox interpretation, particularly its lack of realism and determinism, the fact that it dealt only with the results of measurement rather than the actual physical state of any system, and the ‘shifty split’ between the system, which was treated by quantum theory, and the apparatus, which was treated by classical theory. In opposition to John von Neumann’s approach to quantum measurement, he supported the idea of hidden variables in quantum theory.