Calculate the maximum kinetic energy of photoelectrons emitted when light strikes a metal surface. This calculator uses Einstein's photoelectric equation KE_max = hf - φ to determine electron energy.
Enter your values below
Frequency of the incident light
Minimum energy to eject an electron (e.g., cesium ≈ 2.1 eV)
Default: 4.136×10⁻¹⁵ eV·s
How this calculator works
Maximum kinetic energy equals photon energy (Planck's constant times frequency) minus the work function of the metal.
Common questions about this calculator
These calculators are for educational and informational purposes only. While we strive for accuracy, results should be verified for critical applications. Always consult authoritative sources for engineering or scientific work.
