' This is about gob-smacking science at the far end of reason Take it nice & easy & savour the experience of your mind being blown without recourse to hallucinogens' Nicholas Lezard Guardian For most people quantum theory is a byword for mysterious impenetrable science & yet for many years it was equally baffling for scientists themselves In this magisterial book Manjit Kumar gives a dramatic & superbly-written history of this fundamental scientific revolution & the divisive debate at its core Quantum theory looks at the very building blocks of our world the particles & processes without which it could not exist Yet for 60 years most physicists believed that quantum theory denied the very existence of reality itself In this tour de force of science history Manjit Kumar shows how the golden age of physics ignited the greatest intellectual debate of the twentieth century Quantum theory is weird In 1905 Albert Einstein suggested that light was a particle not a wave defying a century of experiments Werner Heisenberg's uncertainty principle & Erwin Schrodinger's famous dead-&-alive cat are similarly strange As Niels Bohr said if you weren't shocked by quantum theory you didn't really understand it While Quantum sets the science in the context of the great upheavals of the modern age Kumar's centrepiece is the conflict between Einstein & Bohr over the nature of reality & the soul of science ' Bohr brainwashed a whole generation of physicists into believing that the problem had been solved' lamented the Nobel Prize-winning physicist Murray Gell-Mann But in Quantum Kumar brings Einstein back to the centre of the quantum debate Quantum is the essential read for anyone fascinated by this complex & thrilling story & by the band of brilliant men at its heart