′ on the displacement of the ray with the Lagrangian image stage while in the paraxial focal aircraft, by differentiating the OPD expression given higher than. The partial derivatives ∂OPD/∂ In 1841 Gauss released a now well known treatise on optics where he demonstrated that, as far as paraxial rays https://receiverendplate31085.ampedpages.com/a-simple-key-for-satellite-communicator-unveiled-56915738