Point particle of point charges cannot be maintained in an equilibrium configuration solely by the electrostatic interaction of the charges. In quantum mechanics, there is a distinction between an elementary particle (also called "point particle") and a composite particle. An elementary particle, such as an electron, quark, or photon, is a particle with no internal structure. Whereas a composite particle, such as a proton or neutron, has an internal structure (see figure). However, neither elementary nor composite particles are spatially localized, because of the Heisenberg uncertainty principle. The particle wavepacket always occupies a nonzero volume. For example, see atomic orbital: The electron
George (given name) to a variety of regional forms. George (given name) George is a widespread masculine given name, derived from the Greek () through the Latin . Its popularity is due to the widespread veneration of the Christian military saint Saint George (George of Lydda, d. 303). The Greek name as given in the Roman era may ultimately derive from the name of Zeus Georgos, an epithet of Zeus in his aspect as the god of crops. Even though the saint has been considered a patron saint of England since the 15th or 16th century, the given name was rarely given in