Description
Colorful cardboard eyeframe holds 2 double-axis diffraction gratings (each 13,500 lines/inch) which split light from any source into its spectral components. Interesting information on frame adds to the fun.
Colorful cardboard eyeframe holds 2 double-axis diffraction gratings (each 13,500 lines/inch) which split light from any source into its spectral components. Interesting information on frame adds to the fun.