Diffraction Grating - Rainbow Peepholes - Fun with Diffraction grating, Fireworks and laser Shows and Raves - Fun alternative to Fireworks Glasses (20 Peepholes per order)

Ideal teacher incentive: Rainbow Peepholes can be a great incentive for teachers to use in the classroom. Students will be amazed by the rainbow starbursts created by the gratings, which can make learning about light and color more engaging and memorable.

High-quality diffraction grating: Rainbow Peepholes are made with a 13,500 line/inch diffraction grating, which provides clear and detailed rainbow starbursts.

Easy to use: Rainbow Peepholes are user-friendly and require no additional setup or special knowledge. Simply look through the peephole at any light source and enjoy the stunning rainbow effects.

Affordable and durable: Made with heavy cardboard, Rainbow Peepholes are both affordable and durable, making them a cost-effective option for teachers and individuals who need to purchase multiple gratings.