Wonderfulhony Diffraction film sheet A4 size star and smile lines/inch -11inch Length x 8 inches Wide

Description

A4 Size 11 inch *8 inch star and smile lines per inch in diffraction sheet Diffraction Gratings are used for direct viewing and analysis of spectra from different gas tubes and other light sources. such as LED ,table ,candle ... These gratings are the principal component in a spectroscope and are used for experiments pertaining to the study of light and color 0.20mm thickness