Particle

Definition

In the physical sciences, a particle is a separate part of a larger system. Depending on the system they vary greatly in size or quantity, from subatomic particles like the electron, to microscopic particles like atoms and molecules, to macroscopic particles like powders and other granular materials. Particles can also be used to create scientific models of large objects within very large systems, such as humans moving in a crowd, celestial bodies in orbit, or galaxies in the expansion of the universe.

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Abiogenesis Abstraction Addison-Wesley Aerosol Aerosol impaction Air pollution Animal Antihydrogen Antineutron Antiparticle Antiproton Anyon Arc welding Archaea Astrobiology Astrophysics Atmosphere of Earth Atmospheric particulate matter Atmospheric science Atom Atomic nucleus Atomic physics Axino Axion B meson Bacteria Ballistics Baryon Baseball (ball)Bioaerosol Biodiversity Biological organisation Biology Biosphere Boson Bottom antiquark Bottom eta meson Bottom quark Bound state Brownian motion Buoyancy Calculus Canadian Institute for Theoretical Astrophysics Car accident Carbon-14 Carbon dioxide Celestial bodies Chargino Charm antiquark Charm quark Chemical element Chemical property Chemistry Chris Quigg Classical mechanics Climate Cloud Colloid Composite particle Computational fluid dynamics Computational physics Condensation particle counter Corpuscularianism Cosmic ray Cosmology Crowd simulation Curvaton D meson Dark photon Davydov soliton Debris Delta baryon Density Deposition (aerosol physics)Dilaton Diquark Dispersity Double-charm tetraquark Down antiquark Down quark Dropleton Dual graviton Dust Dynamical system Earth Earth science Ecology Ecosystem Eightfold way (physics)Electron Electron hole Electron neutrino Elementary particle Encyclopædia Britannica Energy Energy state Eta meson Eukaryote Exciton Exotic atom Exotic hadron Exotic matter Expansion of the universe Faddeev–Popov ghost Fauna Fermion Field (physics)Flocculation Flora Fluid parcel Fog Fracton (subdimensional particle)Friction Fungus Future of Earth Gaia hypothesis Galaxies Galaxy Galaxy formation Gas Gauge boson Gaugino Geological history of Earth Geology Ghost (physics)Glueball Gluino Gluon Granular material Graviphoton Gravitation Gravitino Graviton Hadron Haze Helium-4 Heptaquark Hexaquark Higgs boson Higgs mechanism Higgsino History of Earth History of life History of subatomic physics Human Hydrogen nuclei Ideal gas laws Idealization (science philosophy)Identical particles Indoor bioaerosol Infinity Inflaton Interface and colloid science Internal structure of Earth Interstellar gas J/psi meson John Wiley & Sons Kaon Lambda baryon Laser particle counter Lepton Leptoquark Life Liquid List of baryons List of hypothetical particles List of mesons List of particles List of quasiparticles Macroscopic scale Magnetic monopole Magnon Majorana fermion Majoron Malvern Instruments Marine debris Mass Mass-energy equivalence Massless particle Mathematical formulation of the Standard Model Matter McGraw-Hill Mean lifetime Mechanics Meson Mesonic molecule Meteorology Meteors Microscopic scale Microscopy Mist Molecular physics Molecule Moonlight Muon Muon neutrino Muonium N-body simulation Nanometre Nanoparticle Natural environment Nature Nature-based solutions Neutral pion Neutralino Neutrino Neutron Night sky Nuclear physics Nucleon Observationally stable Ocean Omega baryon Omega meson Onium Optical microscope Optical particle counter Orbit Organism Outline of physical science Oxford English Dictionary Oxford University Press Particle (disambiguation)Particle accelerator Particle aggregation Particle chauvinism Particle counter Particle decay Particle detector Particle in a box Particle number Particle physics Particle radiation Particle segregation Particle size Particulate matter Particulates Pentaquark Phi meson Phonon Photino Photon Physical body Physical property Pion Pionium Planetary rings Planets Plant Plasmaron Plasmon Plate tectonics Point particle Polariton Polaron Pomeron Positron Positronium Powder (substance)Preon Primary aerosol Primary particle Prokaryote Protist Proton Protonium Publications of the Astronomical Society of the Pacific Quantum mechanics Quark Quark model Quarkonium Quasiparticle R-hadron Radiation Rain Relativistic particle Rest mass Rho meson Rotation Roton Sand Scalar boson Scanning electron microscope Scanning mobility particle sizer Scientific model Scientific modelling Secondary aerosol Self-propelled particle Sfermion Sigma baryon Skyrmion Smog Smoke Snow Soil Solar wind Solid Soot Space Space debris Spark (fire)Speed of light Sphere Spray (liquid drop)Standard Model Star Statistical mechanics Sterile neutrino Steven Weinberg Stop squark Strange antiquark Strange quark Strong interaction Subatomic particle Sun Sunlight Superatom Superpartner Suspended solids Suspension (chemistry)T meson Tachyon Tau (particle)Tau neutrino Tauonium Tetraquark Thermodynamics Theta meson Tide Time Timeline of atomic and subatomic physics Timeline of particle discoveries Top antiquark Top quark Tornado Transmission electron microscope Trion (physics)Tropical cyclone United States National Research Council Universe University of Florida Up antiquark Up quark Upsilon meson Uranium Virtual particle Virus Volume W and Z bosons Wave–particle duality Weather Wilderness Wildfire Wind World Scientific W′ and Z′ bosons X and Y bosons Xi baryon

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