Reference Terms
from Wikipedia, the free encyclopedia


The proton is a subatomic particle with an electric charge of one positive fundamental unit and a mass of 938.3 MeV/c2, or about 1836 times the mass of an electron.

The proton is observed to be stable, with a lower limit on its half-life of about 1035 years, although some theories predict that the proton may decay.

Note:   The above text is excerpted from the Wikipedia article "Proton", which has been released under the GNU Free Documentation License.
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