# Third-party notices

The application code in this repository (`index.html`, `styles.css`, `app.js`,
`physics.js`, `shaders.js`, `periodic-layout.js`) is licensed under the MIT
License (see `LICENSE`). `atoms-data.js` contains third-party data, described
below. The following third-party material is used.

## Wavefunction data (`atoms-data.js`)

Slater-type-orbital expansion coefficients for the ground states of the neutral
atoms H–Lr (Z = 1–103).

- T. Koga, Y. Kanayama, S. Watanabe and A. J. Thakkar, "Analytical Hartree–Fock
  wave functions subject to cusp and asymptotic constraints: He to Xe, Li⁺ to
  Cs⁺, H⁻ to I⁻", *Int. J. Quantum Chem.* **71**, 491–497 (1999).
- T. Koga, K. Kanayama, T. Watanabe, T. Imai and A. J. Thakkar, "Analytical
  Hartree–Fock wave functions for the atoms Cs to Lr", *Theor. Chem. Acc.*
  **104**, 411–413 (2000).
- The original data is distributed by A. J. Thakkar's group
  (<https://ajit.ext.unb.ca/download.htm>; `k99light.zip`, `k00heavy.zip`),
  which states no usage terms on that page. Please cite the papers above when
  you use the data.
- The coefficient tables in this repository were taken from
  <https://github.com/JFurness1/AtomicOrbitals> (`literature_data/k99l` and
  `literature_data/k00heavy`) by James Furness and Susi Lehtola, which is
  released under CC0 1.0 (public-domain dedication). A CC0 dedication by the
  repository's authors cannot extend to rights held by third parties; the
  coefficients are numerical facts published in the papers above.

## three.js r128 (loaded from a CDN, not included in this repository)

MIT License — Copyright © 2010-2021 three.js authors
(<https://github.com/mrdoob/three.js/blob/r128/LICENSE>). If you self-host
`three.min.js`, keep the licence header at the top of the file.

## Colour map

The colour map in the shaders is a simplified, hand-coded approximation inspired
by the "inferno" map of Stéfan van der Walt and Nathaniel Smith (Matplotlib,
CC0; <https://bids.github.io/colormap/>). No Matplotlib data is included.

## Other references

Element names and the periodic-table layout follow IUPAC
(<https://iupac.org/what-we-do/periodic-table-of-elements/>). Further scientific
references (Slater 1930, Roothaan 1951, CODATA 2018, Levoy 1988, Max 1995) are
listed in the application's help dialog (F1, "References" tab); they are cited
for the methods used, and no text or data from them is included.