vertically-aligned set LED, easy and dramatic demonstration of the relationship between the color and wavelength of light, spectral range of each LED can be investigated with spectrometer, or just viewed for comparisons with each other
Light source in metal housing on magnetic foil for experiments demonstrating ray optics on a whiteboard.With the help of rotating mirrors, the beams can be masked out individually. Lamp: 12V, 55W; Cord: 1.5 m w/ 4 mm plug