N-Slit Wave Interference & Full Angular Dispersion Simulation

Main Projection Plane | Click & Drag to Pan
Path Diff to 1st Maxima (n=±1)
Path Diff to Other Side Maxima (|n|≥2)
Primary Maxima
Central White Light Peak

Slit Geometry

Number of Slits (m): 2
Slit Width (w): 10.00 µm
Slit Distance (d): 20.00 µm

Optics & Screen Setup

Wavelength (λ): 550 nm
Screen Distance (L): 1.50 m
Screen Length (s): 0.50 m

View & Display Options

Main Canvas Zoom: 1.0x
180° Window Zoom: 1.0x
180° Angular Map (-90° Left to +90° Right) | Linear Projection View (Scaled by L)
180° Linear Projection View | Dynamic Fringe Spacing vs. L
Total Maxima (Visible)
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Small-Angle Error (n=1)
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Primary Maxima Analysis & Small-Angle Approximation Error Table (Scrollable)
Order (n) Distance Δx (|y|) θ Exact [arcsin(nλd)] θ Approx [ΔxL] Error (%) Path Diff (Δs)