
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?
1.0 Definition, Scope, and History
1.1 Quantum physics is a branch of physics which is the fundamental theory of nature at small scales and low energies of atoms and subatomic particles. An atom is defined as the smallest unit of matter that has the properties of a chemical unit. They consist of a nucleus of protons and neutrons (making up around 99.94% of the mass) and one or more electrons (hydrogen ion excepted). Protons, neutrons, and electrons are fermions, contrasted with bosons. Fermions obey the Pauli exclusion principle and includes all quarks and leptons (electrons, muons, tau, and neutrinos). Bosons include photons, gluons, guage bosons, and the Higgs boson.
1.2 Quarks are elementary subatomic particles for protons and neutrons, both of which have an internal structure. Electrons are elementary particles in their own right with no internal structure. There are six types of quarks, known as flavors: up, down, strange, charm, top, and bottom. Up and down quarks, found in protons and neutrons, have the lowest masses of all quarks. The heavier quarks rapidly change into up and down quarks through a process of particle decay. Gluons "glue" quarks together.
1.3 Quantum mechanics gradually arose from the wave nature of light began in the 17th and 18th centuries, when several scientists proposed a wave theory of light; in 1838, Michael Faraday discovered cathode rays, and in 1859 the statement of the black-body (thermal) radiation problem by Gustav Kirchhoff. Max Planck's provided a solution in 1900 to the black-body radiation problem, Albert Einstein in 1905 offered a quantum-based theory to explain the photoelectric effect, and Niels Bohr's a new model of the atom included quantized electron orbits in 1913.