′ from the displacement of a ray in the Lagrangian image position during the paraxial focal airplane, by differentiating the OPD expression provided earlier mentioned. The partial derivatives ∂OPD/∂ Corresponding but considerably more complex formulas can be found for tracing a skew ray, which is, a ray that does not https://messiahriugr.tusblogos.com/29608805/5-tips-about-active-remote-sensing-you-can-use-today