Learning on ScreenCrystal Growth from the Vapour / Formation and Morphology of Germanium Sulphide Crystals / Variation of the Pulling Rate
- Synopsis
- Sublimation of germanium sulphide (GeS) crystals in the ampoule point within a cylindrical growth oven at approximately 5400c. The variation of the pulling rate of 1mm/d over 3,10,30 to 100mm/d gives large differences in the growth form of the GeS-crystals, GeS-nuclei, growth front, secondary nucleation, needle form growth. Time-lapse. Animated film of the experimental technique.
- Language
- English
- Country
- Germany
- Medium
- Video; Videocassette. VHS. b&w. 9 min.
- Year of production
- 1977-8
- Availability
- Sale; 1996 sale: £20.00 (+VAT +p&p)
- Subjects
- Chemistry
- Keywords
- crystals; germanium sulphide
Credits
- Writer
- E Schönherrl; G Lamprecht
Production Company
Distributor
- Name
Learning on Screen - the British Universities and Colleges Film and Video Council
- services@bufvc.ac.uk
- Web
- http://bufvc.ac.uk External site opens in new window
- Phone
- 020 3743 2345
- Address
- York House
221 Pentonville Road
London
N1 9UZ - Notes
- The Learning on Screen distribution library is currently only available in part. Please contact us with any individual queries. The two series of InterUniversity History Film Consortium films which make extensive use of archive footage been digitised for free, online viewing by UK HE institutions - see Learning on Screen InterUniversity History Film Consortium Films (qv).
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