530 nm
|
Photon Energy: 2.34 eV
Drag the 3D Metal Target vertically across bright & dark fringes to see individual photon hits & photoelectron emission!
Screen Interference Intensity Profile & Photon Hits Accumulation
I ∝ cos²(π d y / λD)
— Theoretical wave intensity (continuous)
■ Accumulated photon impacts
Light Source Controls
530 nm
200nm (UV)
400nm
550nm
750nm (IR)
Medium
25 µm
40 cm
20 cm (closer)
80 cm (farther)
Photoelectric Detector Metal
Center
Work Function (W):
2.10 eV
Photon Energy (hν):
2.34 eV
Max Electron KE:
0.24 eV
Photocurrent:
0.00 µA
Status:
Emitting Electrons
Wave-Particle Duality Concept:
Light travels as continuous interference waves through the slits, but hits the detector as discrete quanta (photons). Photoelectrons are ejected instantly only if the photon energy E = hν exceeds the metal work function W (so KEmax = hν − W), regardless of wave intensity. Photocurrent scales with intensity and local fringe brightness.