Niobium, also known as columbium, is the chemical element with the symbol Nb and the atomic number 41. It is a rare, soft, grey, ductile transition metal.

일반 예시Nb632.8 nm에서의 굴절률 및 소광 계수는2.82677및2.860968. Below are files of complete refractive index and extinction coefficients. If the file is not available for download, you can request our proprietary file by clicking "Request".

Refractive Index Reference - J. H. Weaver, D. W. Lynch, and C. G. Olson, Phys. Rev. B7, 4311 (1973)

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