# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: "<a href=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20b.agf\">SCHOTT Zemax catalog 2017-01-20b</a> (obtained from <a href=\"http://www.schott.com/advanced_optics/english/download/\">http://www.schott.com</a>)<br>See also <a href=\"http://refractiveindex.info/download/data/2017/schott_2017-01-20.pdf\">SCHOTT glass data sheets</a>"
COMMENTS: "lead containing        "
DATA:
  - type: formula 2 
    range: 0.39 2.5
    coefficients: 0 1.73848403 0.0136068604 0.311168974 0.0615960463 1.17490871 121.922711
  - type: tabulated k
    data: |
        0.390 5.7169E-06
        0.400 2.0492E-06
        0.405 1.3908E-06
        0.420 4.7684E-07
        0.436 2.0932E-07
        0.460 9.0600E-08
        0.500 3.8663E-08
        0.546 1.9224E-08
        0.580 1.6691E-08
        0.620 1.7842E-08
        0.660 1.8993E-08
        0.700 1.5652E-08
        1.060 1.0137E-08
        1.530 8.8461E-08
        1.970 4.5507E-07
        2.325 2.6396E-06
        2.500 3.9335E-06
SPECS:
    n_is_absolute: false
    λ_is_vacuum: false
    temperature: 20.0 °C
    coefficients_of_thermal_dispersion: 1.12e-05 1.81e-08 -5.03e-11 1.46e-06 1.58e-09 0.282
    n_d: 1.78472
    V_d: 25.76
    glass_code: 785258.474
    glass_status: standard
    density: 4.74 g/cm<sup>3</sup>
    coefficient_of_thermal_expansion_1: 6.1e-06 K<sup>-1</sup>
    coefficient_of_thermal_expansion_2: 6.8e-06 K<sup>-1</sup>
    ΔP_gF: 0.0142
    climatic_resistance: 1.0
    stain_resistance: 0.0
    acid_resistance: 1.0
    alkali_resistance: 1.2
    phosphate_resistance: 1.0
