06. Light at an interface (Fermat's principle, evanescent waves, Fresnel equations)

Many thanks to Zheng Xi for his helpful feedback 0:26 Law of reflection and refraction (Snell's Law) in ray optics 1:21 Critical angle and Total Internal Reflection 2:22 Fermat's Principle: deriving Snell's Law 4:13 Fermat's Principle: deriving the law of reflection 5:40 Why Fermat's Principle works 7:49 Fermat's Principle: focusing mirrors 9:48 Law of reflection and refraction (Snell's Law) in scalar wave optics 12:29 Critical angle, (Frustrated Total Internal Reflection), evanescent waves 16:17 Continuity of the tangential electric and magnetic field at an interface 18:08 Relation between the electric and magnetic field 19:43 S- and P-polarization 21:25 Deriving the Fresnel equations 25:49 Plotting the coefficients and finding the Brewster angle Other sources: 8.03 - Lect 18 - Index of Refraction, Reflection, Fresnel Equations, Brewster Angle    • 8.03 - Lect 18 - Index of Refraction, Refl...   (15:02 - Snell's law and Total Internal reflection) Total Internal Reflection - Dr. Kapolka Explains Frustrated Total Internal Reflection    • Total Internal Reflection - Dr. Kapolka Ex...   Optics: Reflection at the air-glass boundary | MIT Video Demonstrations in Lasers and Optics    • Optics: Reflection at the air-glass bounda...   (2:45 - Brewster Angle)