Chimeglass · Crystal Chorus

ACTUAL OPEN-SOURCE COMPUTATION
https://github.com/henriquemiranda/phononwebsite
Commit cc5d0c7801bcef5b1b43c67fbaa7c4e2d1806b5f
Observed November 8, 2026: 114 GitHub stars; latest source commit October 21, 2026, 21:50:53 +02:00.
BSD-3-Clause, Copyright (c) 2018 Henrique Miranda. Full license in LICENSE.txt. Attribution does not imply endorsement.

The actual dynamical-matrix assembly from src/dynamicalmatrix.js is adapted into dynamical.mjs: mass normalization, phase-weighted force-constant summation, complex Hermitian symmetrization and acoustic-sum-rule helpers are retained. Non-analytical corrections (NAC) are explicitly unsupported in this ideal chain; the unused NAC/WASM imports and eigensolver tail are omitted. No Highcharts, Three.js, database client, export/capture code, real-material datasets, screenshots, analytics or original UI are bundled.

ORIGINAL MODEL AND INTERFACE
physics.mjs constructs an ideal two-atom, nearest-neighbor periodic mass-spring chain in the source payload format. Two weights (mass 1,2,4,8) and two positive spring stiffnesses (1,2,3) define a cell. The source assembles a 6x6 Cartesian dynamical matrix. The longitudinal x indices yield a 2x2 Hermitian problem, solved analytically for eigenvalues and mass-weighted eigenvectors. The other Cartesian components are unused. Mode animation uses physical displacement eigenvectors divided by sqrt(mass) with the corresponding Bloch phase, magnified for viewing.

Original interactive additions: glass charm controls, local two-branch dispersion plot, wave-vector/branch exploration, pause and single-step, mapped audible tone preview, seven finite design commissions, mass allowances, explicit target checks, one-component nudges, undo/reset, and device-local recipe/seal saves. New code is also BSD-3-Clause.

INTERPRETATION
All values are dimensionless. This is an ideal infinite periodic harmonic chain, not a calibrated real-material simulation or a measured finite-sample sound-transmission curve. A gap contains no allowed propagating mode at any wave vector. A tone above both branches is not counted as a band-gap solution. Target checks use a 0.025 margin from band edges. The visible four-cell strip repeats conceptually without limit. Audible preview maps omega to 180+160*omega Hz, and is silent for the zero-frequency translation.

The concept differs from spatial active-resonator cancellation, infrared spectral-bin filtering and FFT harmonic reconstruction: the central interaction here is building an alternating unit cell and exploring its source-computed acoustic/optical normal modes and band gap.

GENERATED ART
Four original local glass charm assets (seed.webp, shell.webp, fern.webp, moon.webp) were cropped and optimized from a cohesive transparent atlas generated by OpenAI's built-in GPT image tool. They are the actual animated lattice weights, cell selectors, commission icons and earned seals. No upstream or third-party artwork is reused. System fonts only.

RUNTIME
Flat static HTML/CSS/ES modules and local WebP assets, relative paths at site root. No backend, persistent server, external asset/API, authentication, browser secrets, popups or downloads. Recipes, undo history and seals remain in localStorage on this device. Audio starts only after a user gesture and is synthesized locally at low gain. The hosting platform may inject its own overlay/telemetry outside this bundle.

Metadata tags: github-source, game.