Teaching aids…Michel-levy birefringence colour chart
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 73 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0072-1050
No coin nor oath required. For personal study only.
✦ Synopsis
The Chart (dimensions: 22 x 15 cm), is designed and priced to suit students, so that they can buy their own copies for use in optical mineralogy classes. The Chart has both crossed and parallel polar colours, as well as the usual peripheral information for mineral identification. f20 per 100 ($47 U.S. per 100) plus postage. Orders dispatched by Air Parcel unless otherwise instructed. Postage extra.
FILMS
These are super 8 mrn copies of the Kodachrome films used in teaching mineralogy in the Geology Department of the University of Liverpool. Each film runs for about four to five minutes at standard speed. They are a concentrated series of optical experiments run off at such a rate that for use in instruction they have to be frequently stopped to allow students to study the images and the teacher to point out the various features. The films contain no explanations or even sub-titles, but an explanatory sheet is supplied with each. They are ideal for illustrating lectures, for demonstrations during practicals, and for tests, especially when used with reversible variable speed projectors. They are described in the Journal of Geological Education 1974,22,102-3.
Optical Mineralogy
Series -8 films €65 ($150 U.S.) Quartz wedge, Figure recognition 1, Figure recognition 2 -U-conoscope, Magnitude of 2V, Determinations of Optic Sign, Determination of sign of elongation, Dispersion, and Plagioclase determination.