The man who proved Einstein was wrong

This article describes John Bell's contribution to our understanding of quantum reality and the experiment which followed two decades later to test his ideas. This issue was to discover whether the ''action at a distance'', which Albert Einstein himself considered and abhorred, actually exists thus proving the underlying strangeness of the quantum view of the world. This is in marked contrast to our instinctive, albeit inaccurate perspective that a clockworld Newtonian determinism underlies the quantum levels of reality. The experiment, by Alain Aspect, in Paris, considered orthogonal components of electron spin and proved Bell right. The universe really is as strange as quantum theory suggests. An elementary particle does not possess absolute momentum or mass. These are probabilities, resolved only by the act of measurement. (UK)