Forensics Unit 5 Part 2 Notes

Bifringence

Bifringence

________: Some substances (synthetic fibers, some crystalline solids) have two different refractive indices depending which way the light passes through the substance.

Gemstones

________ can also be identified through density and refractive index.

Glass

________ does not have birefringence.

Becke line

The ________ is on the side of the substance that has the higher refractive index.

edge of the glass

The Becke line is on the side of the substance that has the higher refractive index. The ________ fades as it gets close to a matching refractive index.

Color fringe high

________: above line.