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
How to Dismantle an Atomic Bomb How to Dismantle an Atomic Bomb How to Dismantle an Atomic Bomb is the 11th studio album by Irish rock band U2. It was released on 22 November 2004 on Island Records and Interscope Records. Much like their previous album, "All That You Can't Leave Behind", "How to Dismantle an Atomic Bomb" exhibits a more mainstream rock sound after the band experimented with alternative rock and dance music in the 1990s. The album was produced by Steve Lillywhite, with additional production from Chris Thomas, Jacknife Lee, Nellee Hooper, Flood, Daniel Lanois, Brian Eno, and Carl Glanville. Looking for a more