beta-decay interaction
91Steven Weinberg — Infobox Scientist box width = 300px name = Steven Weinberg imagesize = 200px caption = Steven Weinberg birth date = birth date and age|1933|5|3 birth place = New York City, New York, USA residence = United States nationality = United States… …
92Timeline of particle discoveries — This is a timeline of subatomic particle discoveries, including all particles thus far discovered which appear to be elementary (that is, indivisible) given the best available evidence. It also includes the discovery of composite particles and… …
93Ultracold neutrons — (UCN) are free neutrons which can be stored in traps made from certain materials. The storage is based on the reflection of UCN by such materials under any angle of incidence. Properties The reflection is caused by the coherent strong interaction …
94Argon — This article pertains to the chemical element. For other uses, see Argon (disambiguation). Argon (pronEng|ˈɑrgɒn) is a chemical element designated by the symbol Ar. Argon has atomic number 18 and is the third element in group 18 of the periodic… …
95gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …
96Force carrier — This article is about force mediating particles in general. For the specific particles that mediate the electromagnetic, strong, and weak interactions, see gauge boson. In particle physics, quantum field theories such as the Standard Model… …
97quantum field theory — Physics. any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated. [1945 50] * * * Theory that brings quantum …
98Selenium — (pronEng|səˈliniəm) is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature …
99particle — 1. A very small piece or portion of anything. 2. An elementary p. such as a proton or electron. [L. particula, dim. of pars, part] alpha p. (α) a p. consisting of two neutrons and two protons, with a positive charge (2e+); emitted energetically… …
100weak force — noun Date: 1968 a fundamental physical force that governs interactions between hadrons and leptons (as in the emission and absorption of neutrinos) and is responsible for particle decay processes (as beta decay) in radioactivity, that is 10 5… …
