Einstein Photoelectric Effect & Metal Work Function Calculator
Calculate maximum photoelectron kinetic energy (KEmax in eV), stopping potential (V0 in Volts), threshold wavelength (λ0 nm), and quantum photon absorption limits.
Max Photoelectron Kinetic Energy (KEmax)
Calculator Inputs
Max Photoelectron Kinetic Energy (KEmax)
Stopping Potential (V0 in Volts)
Threshold Cutoff Wavelength (λ0 nm)
Photon Energy E
Photoelectric Emission Active: Incident photon energy strictly surpasses the surface work function (E > Φ), instantly liberating photoelectrons.
Photon Energy vs Work Function & Kinetic Energy
Standard quantum mechanics and modern physics tool for Einstein's Nobel-winning photoelectric equation.
Calculation Methodology
Einstein's Photoelectric Equation: KEmax = E_photon - Φ. Where incident photon energy is E = 1239.84 / λ(nm) [eV], and Φ is the metal surface work function (eV). If E < Φ, no photoemission occurs (KEmax = 0). Stopping Potential: V0 = KEmax (Volts). Threshold Cutoff Wavelength: λ0 = 1239.84 / Φ (nm).
Frequently Asked Questions
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