2 Pack 6-inch Crystal Optical Glass Triangular Prism for Photography, Kids, Science, Teaching Light Spectrum, Physics and Taking Photos Pictures (Set of 2, 150mm)

I tutor a 14 year old boy in the eighth grade. His science class is very weak so I purchased these prisms to illustrate refraction of sunlight. I stood with the Sun behind me, put the prism over my shoulder and directed the spectral display onto the shadow in front of me. It was beautiful- Violet, Blue , green,yellow, red. Note- these things are glass and the corners are very fragile. Don't just toss them around they will chip easily.

Good and heavy - robust

Bought to use for experiments in the Physics unit with my Grade 8 class. Great quality for the price. Prisms refract sunlight well and all students were able to see a rainbow.

2 high quality glass prisms that are fun to play with. Make rainbows or make periscopes. Or build your own mad scientist optical lab for fun.

They work wonderful and are as advertised. However the shipping method for them is pretty lack luster. They came in these flimsy cardboard boxes and one of my prism ended up chipping. Because I'm using these for a classroom I cannot let kids handle or maneuver the broken one.