Variable Angle Glass Prism, 20° x 20° x 140°

This glass prism has angles of 20° x 20° x 140°, manufactured from optical borosilicate crown glass with a refractive index of approximately 1.510. The prism measures approximately 32mm x 32mm. The asymmetric angle configuration produces a different dispersion pattern than standard equilateral (60°) prisms, making it useful for demonstrating how prism geometry affects light refraction and spectral separation in optics experiments.