quark
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Black holes and quark confinement
From a variety of experiments, physicists learned roughly 30 years ago that protons, neutrons, pions, and other strongly interacting particles are made from quarks (and antiquarks, and gluons).Soft QuarkXPress v.8.0
New Version of QuarkXPress Delivers a Modern, Intuitive Interface for Faster Design with Fewer Clicks, Precise Typographic Control, Built-in Flash Authoring, and Global Publishing Capabilities.