Quantum physics is based on quantum theory. The first idea about quantum theory was from Max Planck in 1900. He proposed that energy was not emitted continuously but rather in quanta in black body radiation. He was awarded the 1918 Nobel Prize in physics for this work. In 1905, Albert Einstein extended this idea to the photoelectric effect, which treated light as a flow of particles called photons. This was further proved by the Compton experiment on photon scattering. Einstein was awarded the 1921 Nobel Prize partly because of this work. Erwin Schrödinger developed Schrödinger's equation and wave mechanics at the beginning of the last century. Werner Heisenberg developed matrix mechanics and the uncertainty principle at about the same time. These two mechanics were proven equivalent later. Paul Dirac developed a relativistic version of quantum theory. Their theories became the basis of today's quantum mechanics. Schr...