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In particle physics, neutron (TR:13) (LH:29) (TL:42), from neutral-, meaning: “charge zero” + -on, meaning: “subatomic particle”, symbol n, is a bound state particle comprised of two down quarks and one up quark, bound together by the exchange force mediated by gluons.


In 1920, the "neutron" was introduced, in namesake, as a theoretical particle by Ernest Rutherford.

In 1932, the neutron was discovered, based on data by Ettore Majorana and James Chadwick.

The neutron, eventually, was classified as a type of "baryon".


The following are related quotes:

“The answer to the question: ‘what are we made of’, the answer is: protons and neutrons, the heavy particles, or baryons, and electrons, the light particles, or leptons.”
— Michael Robinson (1999), The Nine Number of the Cosmos (pgs. 6-8)[1]

End matter

See also


  1. Rowan-Robinson, Michael. (1999). The Nine Numbers of the Cosmos (pgs. 6, 8). Oxford.

External links

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