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
Scarlett (given name) Scarlett (given name) Scarlett is a feminine name derived from an English surname with an occupational meaning, referring to a person who sold cloth of scarlet. It gained popularity due to the character Scarlett O'Hara in Margaret Mitchell's best-selling novel "Gone with the Wind" and the film adaptation. The name was the 17th most popular name given to baby girls in the England and Wales in 2013 and the 30th most popular name given to baby girls in the United States in 2014. The name also has associations with the bright red color scarlet and, indirectly, with the Biblical scarlet