The Nature of the α Particle from Radioactive Substances

by Ernest Rutherford, Thomas Royds

$1,250 · Offered by Sophia Rare Books

First edition

London: Taylor & Francis, 1909. First edition of the full account of the first experimental proof that α particles are helium nuclei — the experiment in which Rutherford and his assistant Thomas Royds let the α particles from radium emanation pass through the wall of a thin glass tube into an evacuated vessel that had held no helium, sparked the gas that collected there, and saw the spectrum of helium. A

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