Physics Lab
PHOTOELECTRIC EFFECT
Einstein's revolutionary equation explains how light ejects electrons from metal surfaces. Explore the quantum nature of light and energy quantization.
Einstein's Photoelectric Equation:
KE_max = hf − φ
h = Planck's constant (6.626×10⁻³⁴ J·s) | f = frequency | φ = work function
Main Scene
Photocurrent
0.00 µA
Stopping Voltage
0.00 V
NO EMISSION
Wavelength
500 nm
Intensity
50%
Stopping Voltage
0.0 V
Metal
Photon Energy
2.48 eV
Work Function
2.3 eV
KE (max)
0.18 eV
Threshold λ₀
540 nm
KE (max) vs Frequency
Photocurrent vs Intensity
Photocurrent vs Stopping Voltage