Abstract
An equation describing the effect of temperature on the isothermal piezo-optic coefficient under normal pressure has been established for water, at 5893 AA wavelength and for temperatures below 65 degrees C. This (along with other optical data) allowed the author to test various refringency laws. It is shown that the so-called 'invariants of refraction' given in literature are not satisfactory. The theoretical formula given by Lucas (1974) leads to results that disagree with the experimental data. The semi-empirical formula of Eisenberg (1965) only give correct values for the refractive index and thermo-optical coefficient of water; in the case of the piezo-optic coefficient there is, however, a discrepancy with reference values at the highest temperatures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
