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The subatomic particles considered important in the understanding of chemistry are the electron, the proton, and the neutron. Nuclear physics deals with how protons and neutrons arrange themselves in nuclei. The study of subatomic particles, atoms and molecules, and their structure and interactions, requires quantum mechanics.
Feynman diagrams are often confused with spacetime diagrams and bubble chamber images because they all describe particle scattering. Feynman diagrams are graphs that represent the interaction of particles rather than the physical position of the particle during a scattering process. Unlike a bubble chamber picture, only the sum of all the ...
Elementary particles are particles with no measurable internal structure; that is, it is unknown whether they are composed of other particles. [1] They are the fundamental objects of quantum field theory. Many families and sub-families of elementary particles exist. Elementary particles are classified according to their spin.
Download as PDF; Printable version; In other projects ... Pages in category "Subatomic particles" The following 10 pages are in this category, out of 10 total.
In particle physics, the term particle zoo [1] [2] is used colloquially to describe the relatively extensive list of known subatomic particles by comparison to the variety of species in a zoo. In the history of particle physics , the topic of particles was considered to be particularly confusing in the late 1960s.
Ordinary nucleons (symbol N, meaning either a proton or neutron), by contrast, have a mass of about 939 MeV/c 2, and both intrinsic spin and isospin of 1 / 2 . The Δ + (uud) and Δ 0 (udd) particles are higher-mass spin-excitations of the proton (N +, uud) and neutron (N 0, udd), respectively. The Δ ++ and Δ −
The Xi baryons or cascade particles are a family of subatomic hadron particles which have the symbol Ξ and may have an electric charge (Q) of +2 e, +1 e, 0, or −1 e, where e is the elementary charge. Like all conventional baryons, Ξ particles contain three quarks.
According to the IUPAP, the symbol s is the official name, while "strange" is to be considered only as a mnemonic. [2] The name sideways has also been used because the s quark (but also the other three remaining quarks) has an I 3 value of 0 while the u ("up") and d ("down") quarks have values of + 1 / 2 and − 1 / 2 respectively.