Planck's Constant Apparatus

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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

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  • 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.

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Planck's Constant Apparatus