the electron and nucleus
91Nuclear fission — For the generation of electrical power by fission, see Nuclear power. Splitting the atom redirects here. For the EP, see Splitting the Atom. Nuclear physics Radioactive decay Nuclear fission Nuclear fusio …
92Particle in a spherically symmetric potential — In quantum mechanics, the particle in a spherically symmetric potential describes the dynamics of a particle in a potential which has spherical symmetry. The Hamiltonian for such a system has the form:hat{H} = frac{hat{p}^2}{2m 0} + V(r)where m 0 …
93Beta particle — Beta particles are high energy, high speed electrons or positrons emitted by certain types of radioactive nuclei such as potassium 40. The beta particles emitted are a form of ionizing radiation also known as beta rays. The production of beta… …
94Bohr radius — Unit of length name=Bohr radius m=0.000000000052917720859 accuracy=6In the Bohr model of the structure of an atom, put forward by Niels Bohr in 1913, electrons orbit a central nucleus. The model says that the electrons orbit only at certain… …
95CNO cycle — Overview of the CNO I Cycle. The CNO cycle (for carbon–nitrogen–oxygen) is one of two sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain. Unlike the proton–proton chain reaction, the CNO… …
96Muon — The Moon s cosmic ray shadow, as seen in secondary muons generated by cosmic rays in the atmosphere, and detected 700 meters below ground, at the Soudan II detector Composition Elementary particle Statistics …
97Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …
98pair production — Physics. the simultaneous creation of a particle and its antiparticle by a nucleus or particle in an excited state, as when a photon is absorbed. [1930 35] * * * Formation of an electron and a positron from high energy electromagnetic radiation… …
99Heisenberg's microscope — exists only as a thought experiment, one that was proposed by Werner Heisenberg, criticized by his mentor Niels Bohr, and subsequently served as the nucleus of some commonly held ideas, and misunderstandings, about Quantum Mechanics. Basic ideas… …
100Bohr, Niels — ▪ Danish physicist Introduction in full Niels Henrik David Bohr born Oct. 7, 1885, Copenhagen, Den. died Nov. 18, 1962, Copenhagen Danish physicist who was the first to apply the quantum theory, which restricts the energy of a system to… …
