The Prout converter

Prout to eV and Joules conversion and backwards

Willian Prout

Following the classification of the chemical elements by Antoine Lavoisier and the uncovering of the alkalis by Humphry Davy, the latter made the assumption that the undecompounded substances might be made of hydrogen with another principle yet unknown in the separate form. William Prout expanded on this idea, remarking atomic weights might be multiples of that of hydrogen.

The proton was named in 1920 by Ernest Rutherford to give credit to Prout. Similarly, the Prout measurement unit was named after Prout by Enos E. Witmer


Prout's Hypothesis Nature - 04 February 1933

Proceedings of the American Physical Society Physical Review - 15 April 1949

Proton or prouton ? American Journal of Physics - August 1997