. . . . "d(104) from the hexagonal cell of each COD entry with formula C Ca O3 in R-3c (gamma 120), median compared with the claimed 3.07 angstrom." . . "Measured: 3.04721 d(104) of calcite, median over ambient R-3c COD cells (angstrom) (n = 43). Interpretation: Bragg's wavelength for the palladium line was 1.7 per cent low (0.576 against 0.5859 angstrom), so a spacing computed from it is expected to be about 1-2 per cent high; the two per cent threshold is set to the claimed number, not corrected for the wavelength. The correction is reported alongside." . "Claim test of bragg1915-06: supports, confidence 0.85" . . . "Planned datasets: cod-search-api" . "claim-test/0.1.0" . "physical" . "Relative difference above 0.05: refutes. Between 0.02 and 0.05: mixed. Fewer than 3 qualifying entries: inconclusive." . "Bragg's palladium wavelength was 1.7 per cent low, so his spacing is expected to be about that much high; the threshold was set on the claimed number without correction." . "Deviation: COD writes the space group with a setting suffix ('R -3 c :H'); the suffix is stripped before matching the pre-registered symbol, and the hexagonal setting is enforced by gamma = 120 as pre-registered." . "Median d(104) computed from the hexagonal cells (1/d^2 = 4/3 (h^2+hk+k^2)/a^2 + l^2/c^2) over COD entries with formula C Ca O3, space group R -3 c (hexagonal axes, gamma = 120), ambient conditions: |3.07 - d| / d < 0.02: supports." . "Relative difference above 0.05: refutes. Between 0.02 and 0.05: mixed. Fewer than 3 qualifying entries: inconclusive." . "0.85"^^ . . "supports" . "If the calcite cleavage-rhombohedron spacing is 3.07 x 10^-8 cm, the modern d(104) (hexagonal setting of R-3c calcite) is within two per cent of 3.07 angstrom." . "d(104) from the hexagonal cell of each COD entry with formula C Ca O3 in R-3c (gamma 120), median compared with the claimed 3.07 angstrom." . "Median d(104) computed from the hexagonal cells (1/d^2 = 4/3 (h^2+hk+k^2)/a^2 + l^2/c^2) over COD entries with formula C Ca O3, space group R -3 c (hexagonal axes, gamma = 120), ambient conditions: |3.07 - d| / d < 0.02: supports." . "true"^^ . . "" . "CC0 (COD data are public domain)" . . "Dataset: Crystallography Open Database (COD) search API and CIF files" . . . "sha256:5d6d717fc520ff36fbec86564f9eb53563f67c40b2c92a12818dcfac1edb54ba" . . "delphisci claim tester (claude-fable-5.1; crystals-and-form-tests-1)" . . . "claude-fable-5.1" . . . . . . . . . "2026-11-08T16:24:31.804Z"^^ . . . . . "Claim test of bragg1915-06: supports, confidence 0.85" . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyFHtPB6p0mCjDozxlOY9CmO3nBm7Te3jFbXyLmM+G1tGe47Da0jYIbhkl9Oo1ZjxmCa3LCwlEqK8gj6hEIcL4ahW30JXh9HycfKVk1bugkzMEV15tJdTzAU3sGMFnbNsn43xY2LFLy45tApkRm5byEiM7oRRrooIdwoQKnP4Wzq/bfAoJ9qvW+MGkelyOTd1jbSt+KfmT7xKmDfWzAHddUlWwMX2QJOLxDaffOteTop6ZRgPiNmPJKA/S62Gac9XtSYT3oDkZ6/nr5cxxNLpOyxTf5FPISiCe11xYO/unYjY+mwnOfA8yhJIyx1l0O9I0vpOpn+E5TvyHJV+oSTrvwIDAQAB" . "nX8kw7xPuQFF9pFbeKlqADBxy4bIAoSqIHmpoFfv6tbp653HRgpUDq4/phoSUXUzKLdjxiA0VcHz0gxbl8Y2jyAOuHCXKGSOW7Dg7XaYtXmeyKEm/6c4ptGoME0YXkdZHU3CC8WjVROtqzglRIw15iSZ+vu5GW8CHwSvOPhPYWR8cKylq/oI0EPjSqXKHBReaLi3r39OKgUrFXx7CCl0N+rVgj6YCCLDXdtGoInKnWhIyuxGzyp/oicCnmrI1/mDh62bJ/u0StlaDrDOzm8CtMVejEktHsneL2UwaLQbd/apeZp8yeSmWD3Yw86zgnJ7bERFA6b5Nh5NWp/NTJ8jFg==" . . .