Refractive Index of Air Calculator is a web-based tool for calculating the index of refraction of air and wavelength of light in air as a function of various input parameters, using the Ciddor Equation or a modified version of the Edlén Equation.
Web Site Home: Engineering Metrology Toolbox
Technical Inquiries: Daniel S. Sawyer, Group Leader
Engineering Physics Division
Physical Measurement Laboratory
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The National Institute of Standards and Technology (NIST) is an agency of the U.S. Department of Commerce.
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(301) 975-NIST (6478) TTY (301) 975-8295
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Date Created: Wednesday, November 22, 2000
Last Updated: Wednesday, November 24, 2004
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