Quick Answer: The Glass Prism is an equilateral (60°-60°-60°) prism of optical crown glass. Its optical faces are polished and its edges fine-ground.
Last updated: October 2026
Key Features
Optical crown glass
Equilateral triangular form, 60°-60°-60°
Polished optical faces
Fine-ground edges
Technical Specifications
Specification
Value
Material
Optical crown glass
Geometry
Equilateral (60°-60°-60°)
Finish
Polished faces, fine-ground edges
About This Product
An equilateral prism is the standard piece for refraction and dispersion practicals. Students trace rays through it to find the angle of deviation and minimum deviation, calculate the refractive index of the glass, and split white light into its spectrum. Educational Instrument can arrange export supply of the Glass Prism to New Zealand, Palestine, Guinea-Bissau, Kyrgyzstan, Barbados and Central African Republic.
Frequently Asked Questions
What are the angles of the Glass Prism?
It is an equilateral prism, with all three angles at 60°.
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