Astronomy   View all facts   Glossary   Help
physical object > natural object > particle
Next natural objecttheoretical celestial body    Upnatural object    Previous natural objectcollection of particles   

particle comparison table
Subject is not accelerated by has desintegration energy is part of has quantum behavior has acceptance statu obey has synonym has mass has decay product has definition has charge has lifetime is accelerated by
antiparticle     uncertainty principle   Particles with identical mass and spin as those of ordinary matter, but with opposite charge. Antimatter has been produced experimentally, but little of it is found in nature. Why this should be so is one of the questions that must be answered by any adequate theory of the early universe.   
boson   Bose-Einstein statistics uncertainty principle   A particle, or pattern of string vibration, with a whole number amount of spin; typically a messenger particle.   
charged particle     uncertainty principle   A particle with non-zero chargenon-zero electric or magnetic fields
element  Universe  uncertainty principleatom  The fundamental unit of a chemical element. An atom consists of a nucleus, which may contain protons and neutrons, and electrons, which occupy shells that surround the nucleus and are centered on it.   
elementary particle     uncertainty principle   A particle considered to be fundamental, i.e. not composite, a particle which cannot be separated into components   
fermion   Fermi-Dirac statistics exclusion principle   Elementary particle with fractional spin. The proton, electron, neutron, and other elementary particles are all fermions.   
hypothetical particle    hypotheticaluncertainty principle       
massless particle     uncertainty principle 0 A particle with zero mass   
molecule     uncertainty principle   The smallest unit of a chemical compound. A molecule is composed of two or more atoms, linked by interactions of their electrons.   
neutral particleelectric or magnetic fields    uncertainty principle   A particle with zero charge0  
radioactive particle the total energy produced when the particle decays   uncertainty principle  the products produced immediately after decayA particle which can produce harmful radioactivity directly through its decay or by interacting with other particles. The average time in which a particle decays 
secondary cosmic ray     uncertainty principle   Atomic fragment - mainly muons - produced by collisions between primary cosmic rays and the molecules in Earth's atmosphere.   
virtual particle     uncertainty principle   Quantum uncertainties in energy make it possible for virtual particles to be constantly created and annihilated during elementary particle interactions. Elementary particles are able to make use of these virtual particles within their interactions.   

Next natural objecttheoretical celestial body    Upnatural object    Previous natural objectcollection of particles