Product Family Description:
• 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.