Geiger-Nuttall law

== English == === Etymology === Formulated in 1911 by Hans Geiger and John Mitchell Nuttall. === Proper noun === the Geiger-Nuttall law (physics) A rule relating the decay constant of a radioactive isotope with the energy of the alpha particles emitted. Roughly speaking, it states that short-lived isotopes emit more energetic alpha particles than long-lived ones. Synonym: Geiger-Nuttall rule