|Title||Unpublished paper, 'On the dispursive [sic] powers of the ordinary and extraordinary spectra found by rock crystal and Iceland spar' by John I Cooper|
|Date||4 June 1832|
|Description||Cooper writes on dispersive spectroscopy using triangular prisms formed of rock crystal [quartz] and Iceland spar [calcite]. He sets out to show that the spectra formed by the double refraction of rock crystal and Iceland spar, which he refers to as ordinary and extraordinary spectra, differ from one another in their ability to disperse rays of light.|
Subject: Physics / Optics
John George Children's initials appear next to the date received.
Communicated by J G [John George] Children. Received by the Royal Society 7 June 1832.
Written by Cooper in Lambeth [London].
|Physical description||Ink on paper|
Fellows associated with this archive
|NA3175||Children; John George (1777 - 1852); chemist||1777 - 1852|
|NA8298||Wollaston; William Hyde (1766 - 1828); chemist, physicist and physiologist||1766 - 1828|