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Prout (unit)
Obsolete unit of energy
The prout is an obsolete unit of energy, whose value is: 1 prout = 2.9638 × 10 − 14 J {\displaystyle 1\ {\text{prout}}=2.9638\times 10^{-14}\ {\text{J}}} This is equal to one twelfth of the binding energy of the deuteron.
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The "prout" is a unit of nuclear binding energy, and is 1/12 the binding energy of the deuteron, or 185.5 keV. This unit is named after William Prout, who first proposed a quantum of mass. "Proutons" was an early candidate for the name of what are now called protons. This unit was used in the mid-19th century by several physicists, including Marignac, who first proposed it in 1844.
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