Planck's Constant Determination Box

Supplier: VWR International

Planck's Constant Determination Box

Planck's Constant Determination Box

PH1365

470018-432EA 146.55 CAD

470018-432

Planck's Constant Determination Box

Educational Materials Physics Educational Materials Modern Physics Learning Activities

This box shows Planck's Constant in action.

For Determining Approximate Value of Planck's Constant
Seven LEDs from 470 nm to 940 nm
Users Can Plot a Graph of Energy Input

This apparatus is designed to determine the approximate value of Planck's Constant using the elbow voltage in the characteristic curves of a number of LEDs. There are seven LEDs mounted on the box with sockets for voltage and current measurements. By monitoring the voltage at which each LED begins to emit light, users can plot a graph of energy input as a function of light emitted frequency and deduce an approximate value of Planck's Constant.

An external power supply for 9V is required. A 9V battery with suitable connecting cords can also be used.

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