Photoelectric effect
K_max = hf − φ with φ in eV.
Calculator
How to use
Photoelectric
φ in eV; f in Hz.
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
K_max = hf − φ with φ in eV.
φ in eV; f in Hz.
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
Model / formula
K_max = hf − φ (φ in eV here)
Result
K_max = 0.1814 eV (2.9064e-20 J) f₀ = 5.5614e+14 Hz (threshold)