Interferometric measurements to determine the refractive indices
of the nematic liquid crystals EBBA and BEPC as a function of temperature are described utilizing modified Rayleigh and conoscopic interferometers. Theory is presented relating the refractive indices and density to the orientational order, local field parameter and molecular
properties. The results of simple thermal expansivity measurements
are also given for EBBA.
The Lorentz-Lorenz coefficient for SF₆, and GeH₄, has been
determined from refractive index and density measurements. The method
utilizes a prism shaped high pressure cell which can be removed from
a temperature controlled holder and weighed on a precision balance.
The results indicate a variation of 0.5% for SF₆, and 0.8% for GeH₄,
over the density range covered. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/20911 |
| Date | January 1977 |
| Creators | Palffy-Muhoray, Peter |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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