Prout’s hypothesis

1815 Prout’s hypothesis

The book of science

Tom Sharp

William Prout physics

Prout’s hypothesis

Proton, neutron


Others proposed even more outlandish theories about the structure of the atom, including plum puddings, cubes, knots, and tiny planetary rings or solar systems. Prout’s hypothesis was a persuasive approximation of reality; Francis W. Aston was awarded the Nobel Prize in Chemistry in 1922 partly for the “whole-number rule,” a refinement of Prout’s hypothesis that took the existence of isotopes into account.

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