Wool
This is a photograph of the prepared "wool" slide from the
Cargille Hair Standard set. The plane of focus is the
surface of the hair showing the cuticle pattern.
Transmitted Crossed Linear Polarized Light
Definition/Function:
Significance in the Environment:
Characteristic Features:
Wool has a refractive index along its length of about 1.56 and perpendicular to its
length of about 1.55.
It has a birefringence of about 0.01 and a positive sign of elongation.
Associated Particles:
References: