Rainbow Symphony Diffraction Grating Rainbow Peepholes, 13500 Line/Inch, Made in USA, Package of 100

Diffraction Grating Peephole - Preprinted Rainbow Peepholes. Always in stock and ready to ship. A fun and educational incentive. Great quality diffraction grating for the study of Light and Color. Just look through your Rainbow Peephole at any light source...the rainbow starbursts will amaze you! RAINBOW PEEPHOLES: 13,500 Line/Inch Diffraction Grating - 1 11/16" Diameter, 1/2" Window - Heavy Cardboard.

• DIFFRACTION GRATING: Rainbow Symphony's Double Axis Diffraction Grating Peepholes (13500 line/inch) can be used to replace diffraction glasses. They both have microscopic slits that take light and break it down into its spectral components, allowing you to study light and color in fun and unforgettable way.
• QUALITY MATERIALS: Our diffraction circles were designed to be reusable, with quality double axis, holographic, diffraction grating lenses to separate light from any source, including spectrum gas tubes. Do NOT use to look directly at the sun.
• VIVID COLORS: Experience an array of colors as they view the color spectrum in a new and unique way.
• PARTIES: These handy pocket prism rainbow makers are a hit at any party. Keep entertained with rainbow light.
• MADE IN USA: All of Rainbow Symphony's holographic Peepholes are made in America to ensure the quality.