<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/17/351a" 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 William Thomson to Sir John Herschel, dated at Largs by Greenock</dc:title>
  <dc:description>Autograph letter signed by sender. Replies in detail to John Frederick William Herschel's objection to explaining the retardation of the earth's rotation as due to tidal friction, John Frederick William Herschel having urged that this effect should be analyzed in terms of momentum rather than of vis viva [kinetic energy], as William Thomson maintained.</dc:description>
  <dc:date>24 September 1868</dc:date>
</rdf:Description>