January 2012
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Wacky Physics: Why Do Particles Have Flavors? →
livescience.com
“The building blocks of matter — fundamental particles — come in many more flavors than the basic few that make up the atoms we’re familiar with.
Flavor is the name scientists give to different versions of the same type of particle. For instance, quarks (which make up the protons and neutrons inside atoms) come in six flavors: up, down, top, bottom, strange and charm. Particles called leptons, a category that includes electrons, also come in six flavors, each with a different mass.”
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