Air Optics Workbench - yonggang@aurora.tech Feb 2026

Refractive Index (n)--
dn/dT (Sensitivity)--
dn/dP (Sensitivity)--

Estimated Measurement Uncertainty

If your sensors have an accuracy of ±0.1°C and ±10Pa, the uncertainty in n is approximately: --

Calculation based on root-sum-square (RSS) of partial derivatives.

Principles & Standards

This engine implements the Ciddor (1996) standard for the refractive index of air, utilizing the Buck Equation for water vapor pressure. The temperature coefficient dn/dT is crucial for compensating laser distance measurements in industrial metrology.

Citations: Ciddor, P. E., "Refractive index of air: new equations for the visible and near infrared," Applied Optics 35, 1566-1573 (1996).