p An easy-to-understand guide to the complex subject of quantum physics. pp Quantum physics is how scientists describe the world of the very small. For other people, however, the rules of quantum physics seem to violate all logic How can a particle be in more than one place at the same time How can it tunnel through an impenetrable barrier How can a cat in a box be both alive and dead This book explains the complexities of quantum physics in bite-sized lessons that make it clear and accessible to all readers. pp The sections and chapters are pp 1. Atoms -- quantum quantum physics in everyday life the periodic table atoms and nuclei isotopes hydrogen atom energy levels and spectra 2. Photons -- photoelectric effect thermal emission and the Planck distribution wave particle duality Young's slit experiment 3. Quantum devices -- superconductors transistor, diode light-emitting diode laser 4. Spin -- spin fermions exclusion principle Fermi Dirac distribution Bose-Einstein statistics 5. Wave