Physics Lab

DOUBLE SLIT DIFFRACTION

Interactive simulation of wave interference and diffraction patterns. Explore Huygens principle, constructive/destructive interference, and how light behaves when passing through single or multiple slits.

How it works: Light waves passing through narrow slits diffract and create an interference pattern on a distant screen. The bright and dark bands represent constructive and destructive interference — where waves add up or cancel out.

Wave Visualization

Fringe Spacing (Δy): —

1st Minimum at θ: —

Screen Intensity: —

Controls

Slit Mode

Wave Properties

Wavelength (λ): 550 nm

Slit Separation (d): 2.0 μm

Slit Width (a): 0.5 μm

Screen Distance (L): 0.5 m

Number of Slits (N): 2

Animation

Wave Speed: 1.0×

Display

Show individual slit waves

Show diffraction envelope

Show path difference lines

Central Peak

100%

Visibility

High