Details of exhibit
- Exhibition:
- 1907 Fifty-second Annual Exhibition of the Royal Photographic Society of Great Britain
- Exhibit title:
- Nine photographs of the Optical Phenomena of Crystals in convergent polraised light
- Exhibitor:
- Thomas C. Hughes
- Section:
- Scientific and Technical Photography and its Application to Processes of Reproduction
- Exhibit No.:
- 404
- Description:
- Bi-axial crystal photographed – Nitrate of Potash
Un-axial crystal photographed – Calc spar.
(a) Both crystals with analysing and polarising Nicols crossed.
(b) Both crystals with Nicols parallel.
(c) Bi-axial crystal with Nicols crossed and with the axes of the crystal at 45° to the plane of polarisation.
(d) Both crystals with Nicols crossed, and with a quarter were plate between the crystal and analysing Nicols crossed, and with a quarter wave plate between the polarising Nicol and crystal, also a quarter wave plate between the crystal and analysing Nicol. - Exhibit type:
- Photograph
- Process:
- [Not Listed] ()
- Award:
- none
