The Quantum Age

Book excerpt: The stone age, the iron age, the steam and electrical ages all saw the reach of humankind transformed by new technology. Now we are living in the quantum age, a revolution in everyday life led by our understanding of the very, very small. Quantum physics lies at the heart of every electronic device from smartphones to lasers; quantum superconductors allow levitating trains and MRI scanners, while superfast, ultra-secure quantum computers may soon be a reality. Yet quantum particles such as atoms, electrons and photons remain mysterious, acting totally unlike the objects we experience directly. With his trademark clarity and enthusiasm, acclaimed popular science author Brian Clegg reveals the amazing world of the quantum that lies all around us.