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陽子の大きさは,陽子の大きさです

Randolf Pohl1, Aldo Antognini, François Nez

  • 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany. randolf.pohl@mpq.mpg.de

Nature
|July 9, 2010
PubMed
まとめ

研究者は,陽子の質素を測定した.

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Electron Behavior00:54

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Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.
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Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
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Electrons are negatively charged subatomic particles attracted to and orbit around the positively-charged nucleus of an atom. They reside in spaces associated with energy levels called shells and are further organized into subshells and orbitals within each shell.
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