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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MOB/040" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Spectra apparatus by Joseph von Fraunhofer</dc:title>
  <dc:description>Spectra apparatus, including a  telescope, eyepieces, reflecting prisms and slides, and a mahogany carry case. For investigating the properties of coloured spectra and exhibiting the fixed lines therein.</dc:description>
  <dc:date>late 18th century</dc:date>
</rdf:Description>