1592952558000 1312632483000 term-3424 1616541386866 1312632488000 1616290275822 adlib fitz-online adlib-term-3424 a3c2acef-4ba3-367f-9655-e9490619f5f8 2 1 refraction, double refraction, double term reference term-3425 adlib-term-3425 2bd9205b-8547-35e4-92bf-8866fa63d325 birefringence