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| physical object > natural object > particle > charged particle > electron > free electron |
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| free electron comparison table | ||||||||||||||||||||
| Subject | has location | has material | is part of | has volume | is a kind of | has frequency | has temperature | has quantum behavior | has wavelength | has velocity | has spin | obey | has momentum | has extent | has mass | has definition | has charge | has angular momentum | has antiparticle | is accelerated by |
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| delta-ray | or center of gravity | element | free electron | inversely proportional to the wavelength | Fermi-Dirac statistics | inversely proportional to its momentum | 1/2 | uncertainty principle | A recoil electron ejected from an atom by an energetic charged particle. Delta-rays appear as branches in the main track of a cloud chamber. | -1 | positron | electric or magnetic fields |
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