Experiment: Planck’s constant (230 V, 50/60 Hz)

Experiment: Planck’s constant (230 V, 50/60 Hz), 8000700 [UE5010200-230], Fundamentals of Atomic Physics
£ 1,052.64 (includes VAT at standard rate)
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Objective: Determine Planck’s constant using the decelerating voltage method

In a modified version of a classic set-up, light of known frequency passes through a ring-shaped anode to collide with a cathode, where it causes electrons to be released due to the photo-electric effect. The energy of the electrons can be determined by applying a decelerating voltage, which compensates for the flow of electrons towards the anode until no electrons are flowing. This demonstrates that the cut-off value of the decelerating voltage which corresponds to a current of zero is not dependent on the intensity of the light. The energy of the electrons is therefore similarly independent of intensity. By obtaining the cut-off voltages for light of varying frequency, it is possible to calculate Planck’s constant.

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Planck’s Constant Apparatus (230 V, 50/60 Hz), 1000537 [U10700-230], Fundamentals of Atomic Physics

Planck’s Constant Apparatus (230 V, 50/60 Hz)

1000537 [U10700-230]
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£ 1,052.64
Item No.: 8000700 [UE5010200-230]
Brand 3B Scientific
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