Wavelength(m)	n	k
# material: BaTiO3
# source: S.H. Wemple, M. Didomenico Jr., I. Camlibel. Dielectric and optical properties of melt-grown BaTiO3. J. Phys. Chem. Solids 29, 1797-1803 (1968)
# conditions: Ordinary ray (o). Room temperature.
# upstream: polyanskiy/refractiveindex.info-database@ff11b58 main/BaTiO3/nk/Wemple-o.yml
# type: formula 1
# coefficients: 0.0 4.187 2.23e-07
# coefficient_unit: m
# note: dispersion fit; k is 0 across the range it covers
# range: 4.0000e-07 - 7.0000e-07 m
# converted: 2026-07-31 (wavelength um -> m)
