Nature of Light and Geometric Optics: Reflection, Refraction, and Dispersion, Study notes of Physics

Download Nature of Light and Geometric Optics: Reflection, Refraction, and Dispersion and more Study notes Physics in PDF only on Docsity! Nature of Light and Laws of Geometric Optics The nature of light Reflection Refraction Index of refraction Huygens’ Principle Dispersion and Prisms Total Internal Reflection The Nature of Light Light as Particles Tactile Theory (Ancient Greeks) Emission Theory (al-Haitham) Newton Light as Waves (ω, k) Huygens Maxwell Quantum Theory (E = hf) Photons Reflection Specular Reflection Diffuse Reflection 11 θθ =′ Double Reflection Refraction constant sin sin 1 2 1 2 == v v θ θ h Light Propagation Through a Slab 1 2 1 2 sinsin θθ n n = 2 1 2 3 sinsin θθ n n = 11 2 1 1 2 3 sinsinsin θθθ == n n n n h 2cosθ hx = αsinxd = 21 θθα −= ( )21 2 sin cos θθ θ −= hd d x θ2 α θ1 Huygens Principle Old »—rAi—+' wave front New wave front | | New | Wave | Old ) Wave fro nf | front Huygens’ Principle Applied to Reflection and Refraction AC CA′ =1sinθ AC AD =′1sinθ ADCA =′ 11 θθ ′= AC tv Δ = 11sinθ AC tv Δ = 22sinθ 2 1 2 1 2 1 sin sin nc nc v v == θ θ 2211 sinsin θθ nn = Angle of Deviation δ α θ1 θ4 αθθδ −+= 41 Total Internal Reflection °= 90sinsin 21 nn cθ 1 2sin n n c =θ Only for n1 > n2 Critical Angle, θc View From a Fish Eye °= === 8.48 752.0 33.1 1sin 1 2 c c n n θ θ For θ<θc : The fish sees above the water For θ=θc : The fish sees the shoreline For θ>θc : The fish sees the pond bottom