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ScienceWeek |
 | | All particles in nature are either fermions or bosons, with fermions (always elementary particles) having half-integer spin (spin-states characterized by half-integer multiples of Planck's constant divided by 2 pi), and bosons (all other particles) having integer spin (spin-states characterized by integer multiples of Planck's constant divided by 2 pi). |
 | | In general, bosons are particles that obey Bose-Einstein statistics, and they include photons, pi mesons, all nuclei having an even number of particles, and all particles with integer or zero spin. |
 | | Bosons are particles that obey Bose-Einstein statistics, and they include photons, pi mesons, all nuclei having an even number of particles, and all particles with integer spin. |
| www.scienceweek.com /2003/sw030404.htm (10906 words) |
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