👉 Fresnel's law is a mathematical formula that describes the behavior of light in a medium. It relates the intensity of light to its frequency and wavelength, as well as to the angle at which it strikes an object. The equation for Fresnel's law is: \[ I = \frac{E}{d} \] Where: - \(I\) is the intensity of the light in watts per square meter, - \(E\) is the electric field strength in units of newtons per cou