Memorise Flashcards
1
Q
Wavelength of Sodium Light
A
589.3 nanometres
2
Q
Uniaxial
A
One optic axis (equal to the C-axis)
3
Q
Biaxial
A
More than one optic axes (2-3). C axis is not the optic axis. 2v angle where the optic axes meet the C-axis
4
Q
Optic Axis
A
A direction in a DR stone where it appears to be SR
5
Q
A