LED Array, 1 Each

The LED Array by United Scientific is a classroom apparatus that demonstrates the color-wavelength relationship of light. Ten single-color LEDs covering the visible spectrum, plus one white wide-spectrum LED, are mounted in a 33.5 cm column and selected individually or all together with a rotary switch. A 110-240 VAC power supply is included. Physics teachers use it for spectrum and wavelength lessons, often alongside a spectroscope.