Ray Optics: EM Wave Optics

This lecture covers radiometry and photometry, including the measurement of electromagnetic radiations and the spectral response of the eye. It delves into the definitions of irradiance and fluence rate, as well as the concepts of laser power distribution and light absorption. The instructor explains the principles of ray optics, the laws of reflection and refraction, and the behavior of light in different optical media. The lecture also explores Maxwell's equations, the electromagnetic spectrum, and the effects of various wavelengths on biological tissues.