# 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="https://refractiveindex.info/download/data/2017/ohara_2017-11-30.agf">OHARA Zemax catalog 2017-11-30</a> (obtained from <a href="http://www.ohara-inc.co.jp/en/product/optical/list/">http://www.ohara-inc.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2017/ohara_2017-11-30.pdf">OHARA glass data sheets</a>
COMMENTS: |
    Low Softening Temperature
DATA:
  - type: formula 2
    wavelength_range: 0.28 2.4
    coefficients: 0 1.26144128 0.00572512582 0.782115273 0.0219829752 1.15823645 88.04822
  - type: tabulated k
    data: |
        0.280 4.2271E-06
        0.290 2.6295E-06
        0.300 1.8538E-06
        0.310 1.3016E-06
        0.320 9.4491E-07
        0.330 6.5247E-07
        0.340 4.3972E-07
        0.350 2.8727E-07
        0.360 1.8642E-07
        0.370 1.3865E-07
        0.380 8.2769E-08
        0.390 5.9534E-08
        0.400 4.4878E-08
        0.420 3.0216E-08
        0.440 2.4596E-08
        0.460 1.4672E-08
        0.480 1.1476E-08
        0.500 7.9657E-09
        0.550 4.3790E-09
        0.600 4.7770E-09
        0.650 5.1751E-09
        0.700 5.5732E-09
        0.800 6.3694E-09
        0.900 7.1656E-09
        1.000 7.9617E-09
        1.200 9.5541E-09
        1.400 3.3473E-08
        1.600 5.1032E-08
        1.800 1.7293E-07
        2.000 6.0004E-07
        2.200 1.7476E-06
        2.400 7.6486E-06
CONDITIONS:
    temperature: 298
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 7.54e-06 1.03e-08 1.85e-11 6.57e-07 6.38e-10 0.204
    nd: 1.764500
    Vd: 49.096913
    density:
      - value: 4290
    thermal_expansion:
      - temperature_range: 243 343
        value: 5.7e-06
    dPgF: -0.0092
    resistance:
        climatic: 2.0
        acid: 52.2
        phosphate: 2.0