🌊 Double Slit Experiment

Observe wave interference creating bright and dark fringes on a screen

Difficulty: ● Hard

📐 Physics Formulas
d sin(θ) = mλ
Bright fringes (constructive)
d sin(θ) = (m + ½)λ
Dark fringes (destructive)
Δφ = 2π(Δr / λ)
Phase difference
I = 4I₀ cos²(πd sin(θ)/λ)
Intensity pattern
📚 Key Concepts
  • Light acts as both particle and wave
  • Two slits create two coherent sources
  • Path difference causes interference pattern
  • Bright fringes: waves arrive in phase
  • Dark fringes: waves arrive out of phase
🔬 Try This
  • Increase wavelength to see wider spacing
  • Decrease slit separation for fewer fringes
  • Watch wavefronts interfere in real-time
  • Observe the intensity pattern on screen
  • Toggle between wave and screen view
⚙️ Experiment Parameters
Wavelength (λ) 40 nm
Slit Separation (d) 100 px
Slit Width 10 px
Wave Amplitude 30
Frequency 2.0 Hz
Show Wavefronts
Show Barrier
Show Screen Pattern
0
Visible Fringes
0
Fringe Spacing (px)
0
λ/d Ratio
0
Max Intensity