Double-Slit Interference

A CAELIX lattice-field experiment in local wave propagation, masked geometry and emergent fringe structure

Run Experiment

Open the live browser experiment as a single-run view.

What Is It?

This experiment is the first visible interference test in the browser suite. It uses a two-dimensional telegraph-mode mediator field, with a masked wall and two apertures carved through it.

A sinusoidal source drives waves on one side of the wall. The pattern on the far side forms through local neighbour coupling alone. No diffraction equation is evaluated. No Fourier transform is used. No analytic interference pattern is imposed.

What It Tests

The purpose is not to reproduce the quantum double-slit experiment in full. This is a controlled lattice analogue. It asks a narrower and more useful question: can a local field update on a masked lattice produce a coherent fringe structure when waves are forced through two apertures?

That makes the experiment a baseline check for CAELIX interference behaviour. If fringes appear here, the result can be inspected as a consequence of local propagation, boundary geometry and source phase. If they do not, later claims about interference-like behaviour elsewhere have no footing.

How It Works

The field is stored as a scalar disturbance and velocity pair, conventionally written as φ and v. Each cell updates from its local neighbours under a telegraph-style stencil. A hard wall is represented by a binary mask: blocked cells are clamped to zero, while two narrow slit regions are left open.

The source is placed on the incident side of the wall. Once driven, the field spreads, reaches the barrier, passes through the two openings and overlaps behind the wall. The visible pattern is a consequence of local propagation and phase interaction across the grid.

What Is Not Hard-Coded

No diffraction formula is evaluated.
No analytic wave solution is imposed.
No FFT or global propagation solve is used.
No fringe pattern is painted into the render path.

The renderer only displays the current field state. The wall, slits, source and local update rule do the work.

Why It Matters

Double-slit behaviour is a useful early benchmark because it is visually familiar but mechanically unforgiving. A local field model either produces phase-structured overlap behind the apertures, or it does not.

For CAELIX, the point is not that this proves quantum mechanics from a browser animation. It does something smaller and more honest: it shows that interference-like structure can be made to arise in a finite lattice field from local rules, masked geometry and phase-coherent driving.