<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/FS/7/2/40/3" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from Simon to Prof Patrick Blackett re He3</dc:title>
  <dc:description>Simon states that the concentration of He3 found in the atmosphere could be explained by a nitrogen nucleus, struck by a fast neutron, producing three alpa particles and a Hydrogen 3 which would then decay into He3</dc:description>
  <dc:date></dc:date>
</rdf:Description>