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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/P1/77" 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 Ignatius Pardies to Henry Oldenburg, dated at Paris</dc:title>
  <dc:description>Encloses Pardies' comments on Newton's objections to his theory on colour and light (see EL/P1/79 and EL/N1/38 for Newton's letter); discusssing the mathematics relating to the harmonics of Samuel Moreland's trumpet and the hyperbolic figure created; Pardies hopes that he will be able to speak about the trumpet and its shape after completion of  'Mechanics' </dc:description>
  <dc:date>21 May 1672</dc:date>
</rdf:Description>