Kids Physics Light Spectrum Science Toys Glass Reflecting Triangular Color Prism Specification Material: Glass Size: 5 x 3 x 2.5 cm Angle: 60 degrees Packaging Dimensions: 8 x 6 x 5 cm Recommended Ages: 4 Years and up Shipping list1 x Triangular Color Prism Features: 1. Make a Rainbow by refraction easily and can also be used for some cool photography effects 2. Cool Science Experiment You Can Do at Home - You can explain to kids that light is actually made up of a spectrum of colors and talk about how rainbows form and then cement the information with a demonstration. 3. Suitable for physics class experiment and children's extracurricular science activity. 4. Kids can study physics knowledge by playing with this triangular prism. Note Due to photo lighting problems, the color of the picture may be slightly different. Due to manual measurement, the size may have an error of 1-2cm.