$GOODJING 2Pack Optical Glass Triangular Prism,2'' 3'' Crystal Prism Refractor for Spectral Physics Teaching Prism Photography$

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Optical glass material: This prism is made of high quality K9 crystal instead of plastic or acrylic. The crystals we use for prisms are lead-free and therefore safe and reliable.
Triangular prisms are used to disperse light, that is to break light up into its spectral components(the colors of the rainbow). Help showing/presenting what a rainbow made of.
Triangular prisms can be used in teaching experiments to embody abstract optical phenomena and help students better understand the course through experimental specific operations.
Package Includes: There are two size(2 inch and 3 inch) of prism for you, which can meet your different needs.
Wide application:Our prism can be used in class for teaching children about light spectrum, photography, home or wedding decor or using as a pendant as part of a chandelier.