basic

Work Function Photoelectric Threshold Calculator

Threshold λ = hc/φ — minimum wavelength to eject electrons.

Calculates the threshold frequency and wavelength for the photoelectric effect from a metal work function, and the minimum photon energy required.

10 of 10 free calculations left today. Sign up for more.
Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

E = hν = hc/λ; threshold when E = φ

In depth

Calculates the threshold frequency and wavelength for the photoelectric effect from a metal work function, and the minimum photon energy required.