particle
51Particle-Induced X-ray Emission — or Proton Induced X ray Emission (PIXE) is a technique used in the determining of the elemental make up of a material or sample. When a material is exposed to an ion beam, atomic interactions occur that give off EM radiation of wavelengths in the …
52Particle statistics — refers to the particular description of particles in statistical mechanics. The three main types of particle statistics are:* For classical systems: Maxwell Boltzmann statistics (M B statistics)::ar{n} = frac{1}{e^{left(epsilon mu ight)/k T* For …
53Particle aggregation — in materials science is direct mutual attraction between particles (atoms or molecules) via van der Waals forces or chemical bonding. When there are collisions between particles in fluid, there are chances that particles will attach to each other …
54Particle size (grain size) — Particle size, also called grain size, refers to the diameter of individual grains of sediment, or the lithified particles in clastic rocks. The term may also be applied to other granular materials. This is different from the crystallite size,… …
55particle accelerator — particle accelerators N COUNT A particle accelerator is a machine used for research in nuclear physics which can make particles that are smaller than atoms move very fast …
56particle beam weapon — noun A weapon whose destructive force consists of a beam of high energy subatomic particles • • • Main Entry: ↑particle …
57particle size — noun (geology) The general dimensions, eg average diameter or volume, of grains in a rock or sediment • • • Main Entry: ↑particle …
58Particle physics — Par ti*cle phys ics, n. That branch of physics which investigates the nature of matter, and in particular the properties and behavior of the elementary particles (fundamental particles), of which matter is composed. Included in this field is the… …
59Particle Image Velocimetry — (PIV) ist ein berührungsloses optisches Verfahren zur Bestimmung von Geschwindigkeitsfeldern in der Strömungsmechanik. In kurzem zeitlichen Abstand werden Partikel im Fluid fotografiert. Aus den Partikelpositionen auf den Bildern kann die… …
60Particle shape — Particle shape. См. Форма частиц. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …
