Indigo brand BK7 glass prisms for light dispersion experiments, retroreflection. Great prices when you buy just one; unbeatable prices on quantity.
"White" light like sunlight is without doubt as important to life as water. From physics and the stars, to chemistry and materials through to biology and photosynthesis and color vision, understanding the nature of light is a common denominator in all areas of science.
An equilateral glass prism is an inexpensive way to introduce a basic understanding by showing white light refraction or the splitting of sunlight into its constituent colors of violet, blue, green, yellow, orange and red.
A right angle prism can be used to demonstrate reflection and how light behaves on surfaces.
Check out this chandelier made with special 225mm (9") glass prisms. Thanks to Fabray Lighting Design, Comstock Design, TableM, and AdLight for sharing this image & allowing us to show it.
These prisms are made with clear BK7 glass which work well with visible light & refract light it to produce a clear rainbow spectrum.
For the truly curious, you can also show that these prisms separate out light in the infrared region as discovered by William Herschel.