Sci-Supply SS20722 LED Light Array with 11 LED's, Light Wavelength & Planck's Constant

The Sci-Supply SS20722 LED light array is an easy and inexpensive way to demonstrate light wavelength in the classroom. By using the rotary switch on top, you can select any of the 11 LED's individually or all 11 simultaneously. The LED's are clearly identified with wavelength and color and assorted in an ascending order(by wavelength) vertically from the bottom. This device will allow students to observe color diffraction and compare diffraction patterns for each color. The array is powered by an (included) power supply adapter for a standard 110V wall outlet.

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• Power Supply Included, Just Plug into Outlet (N. America) and Go
• 11 Vertically Mounted LED's
• Select LED's Individually or Simultaneously
• Wavelength and Color of Each LED Marked
• Compact Footprint, Ideal for the Classroom!