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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/O2/120" 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 Henry Oldenburg to Christian Huygens, dated at London</dc:title>
  <dc:description>Concerns a demonstration of the cycloid; recounts the principle of the demonstration of the synchronism of vibrations in a cycloid; transcribes William Brouncker's letter about his demonstration; concerning circular pendulums and pendulum clocks for use at sea</dc:description>
  <dc:date>23 June 1673</dc:date>
</rdf:Description>