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Advanced LED Array (Planck's Constant)

Item # 755152

With the Advanced LED Array (Planck's Constant), teachers can discuss diffraction and the relationship between wavelength and color in light. In addition, Planck's constant can be calculated while introducing several of the underlying principles of semiconductors. The array features 11 vertically stacked LED lights attached to a base with power switch, 2 power inputs, and LED common terminal input.

Price

$116.95

In stock and available to ship.
  • Overview

    With the Advanced LED Array (Planck's Constant), teachers can discuss diffraction and the relationship between wavelength and color in light. In addition, Planck's constant can be calculated while introducing several of the underlying principles of semiconductors (e.g., p-n junctions, bandgaps). The activation voltage (Va) of each LED can be measured, which is proportional to the energy of the emitted photons and thus inversely proportional to each LED's wavelength. From these measurements, Planck's constant is determined.

    Use this array to supplement investigations for AP® Physics 2, the Particle Model of Light. It also can be an excellent introduction to Planck's constant for chemistry students. The array features 11 vertically stacked LED lights attached to a base with power switch, 2 power inputs, and LED common terminal input. The included instructions provide the LED wavelengths, or use a spectroscope to determine. DC power supply is needed but not supplied. Dimensions: base, 4-13/16 x 7-3/4"; metal array, 12-3/4" H; base plus array, 14" H.

    AP® is a trademark registered and/or owned by the College Board®, which was not involved in the production of, and does not endorse, this product.

     
  • Features & Specs
    Item# 755152
    Power Requirements 0- to 6-V continuous DC
  • What's Included
    Components Qty Included?
    Advanced LED Array 1 Included
    Banana Plugs, 4 mm 2 Needed, Not Included
    Power Supply (0- to 6-V continuous DC) 1 Needed, Not Included
    Digital Multimeter Needed, Not Included
    Diffraction Grating Film (optional) Needed, Not Included
    Spectroscope (optional) Needed, Not Included
  • Ratings & Reviews
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