Hemp Fiber
                
              
              
                Transmitted Crossed Linear Polarized Light
                
Definition/Function:
                Significance in the Environment:
                This is a common clothing fiber.
                Characteristic Features:
                Hemp has a refractive index along its length of about 1.58 to 1.59 and perpendicular to
                its length of about 1.53 to 1.54.
                It has a birefringence of up to 0.05 and a positive sign of elongation.
                Associated Particles:
                References:
                DuPont Company Techinical Bulletin X-156: IDENTIFICATION OF FIBERS IN TEXTILE MATERIALS,
                December 1961.