Transmitted 20 Degrees Off Crossed Linear Polarized Light
Significance in the Environment:
This is a common clothing fiber.
Ramie has a refractive index along its length of about 1.59 to 1.60 and perpendicular to its length of about 1.53 to 1.54.
It has a birefringence of up to 0.07 and a positive sign of elongation.