Electron
The electron (seembol:
e−
) is a subatomic particle wi a negative elementary electric charge.[1] Electrons belang tae the first generation o the lepton pairticle faimily,[2] an are generally thoucht tae be elementary pairticles acause thay hae na kent components or substructur.[3] The electron haes a mass that is approximately 1/1836 that o the proton.[4] Quantum mechanical properties o the electron include an intrinsic angular momentum (spin) o a hauf-integer value in units o ħ, which means that it is a fermion. Bein fermions, na twa electrons can occupy the same quantum state, in accordance wi the Pauli exclusion principle.[2] Electrons an aa hae properties o baith pairticles an waves, an sae can collide wi ither pairticles an can be diffractit lik licht. Experiments wi electrons best demonstrate this duality acause electrons hae a tiny mass.
References
[eedit | eedit soorce]- ↑ "JERRY COFF". Retrieved 10 September 2010.
- ↑ a b Curtis, L.J. (2003). Atomic Structure and Lifetimes: A Conceptual Approach. Cambridge University Press. p. 74. ISBN 0-521-53635-9.
- ↑ Eichten, E.J.; Peskin, M.E.; Peskin, M. (1983). "New Tests for Quark and Lepton Substructure". Physical Review Letters. 50 (11): 811–814. Bibcode:1983PhRvL..50..811E. doi:10.1103/PhysRevLett.50.811.
- ↑ "CODATA value: proton-electron mass ratio". 2006 CODATA recommended values. National Institute of Standards and Technology. Retrieved 18 Julie 2009.