Photoelectric Effect Calculator

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Calculates the kinetic energy of electrons ejected from a material when light shines on it, based on photon energy and work function.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Photon Energy (eV) and Work Function (eV) in the units shown.

Step 2

Read Kinetic Energy (eV) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Photon Energy (eV): 2.2 eV; Work Function (eV): 2.3 eV

Kinetic Energy (eV): -0.1 eV

Photon Energy (eV): 3.5 eV; Work Function (eV): 2.3 eV

Kinetic Energy (eV): 1.2 eV

Photon Energy (eV): 2 eV; Work Function (eV): 2.2 eV

Kinetic Energy (eV): -0.2 eV

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