6F10.18 Lantern Slide Colors
A diffraction grating is held in front of a lantern projector with seven slits, one side with primary additive colors, the other with subtractive, and the center white.
6F10.18 Lantern Slide Colors
A diffraction grating is held in front of a lantern projector with seven slits, one side with primary additive colors, the other with subtractive, and the center white.