Planck's Constant Apparatus

• Compact, easy-to-use apparatus
• Accurate results with less than 5% error
•  Measures Planck’s constant and estimates the work function of cesium

The Planck’s Constant Apparatus is a compact unit containing an enclosed vacuum photocell with an attachment for illuminating light sources, a high stability power supply for applying a variable stopping voltage to the cell and a nanoammeter for measuring the resulting photocurrents.

High quality stabilized LED supply and amplifier yield results for h to better than 5%
All materials included are packed in a compact, lightweight unit.

INSTRUCTIONS FOR USE PLEASE CLICK HERE