Triangular Optical Prism - Make a Rainbow Size:L With 10 piano keys

With 10 piano keys

which is conducive to exercise children's spatial imagination

Suitable for kids (18 months – 7 years)

Strap&Safe™ is a lightweight

Triangular Optical Prism - Make a Rainbow Size:L With 10 piano keysRainbows always appear after the rain and it is always a sight to behold for kids and adults alike. But what if it doesn't rain, will that make you not see a rainbow? Worry no more for this Triangular Optical Prism will always allow you to see the colors of the rainbow whenever you feel like it. This Triangular Glass Prism is a transparent, triangular device. As light passes through a prism, the light bends due to the process called refraction of