later This disc showed my students very well that white light consists of all the colors of the rainbow. However, don't expect to go bright white no matter how fast you spin. It's definitely off-white. The gearbox design at the rear also needs improvement. The central screw holding the disc to the handle loosens with rotation and eventually loosens about a minute after rotation.
Enhancing Learning with Optical Photography Triangular Teaching Education
3 Review
Optical Crystal Photography Prisms Science
3 Review
π Diffraction Grating Slides by Rainbow Symphony
3 Review
πΈ Unleash Your Creative Potential with the Young4Us Triangular Photography Teaching Spectrum
3 Review