L25Note_Refraction(9)

L25Note_Refraction(9) - 1 1 PHYS 112, SP08, Cui Lecture 25,...

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Unformatted text preview: 1 1 PHYS 112, SP08, Cui Lecture 25, 04/14/08 Refraction • Refraction • Total Internal Reflection • 22.3 & 22.7 2 PHYS 112, SP08, Cui Lecture 25, 04/14/08 Review • Ray Model – light travels in straight line • Law of Reflection • Plane mirror ' 1 1 θ θ = angle of reflection The angle between the reflective ray and the normal to the surface. angle of incidence The angle between the incident ray and a line perpendicular to the surface – the normal to the surface. 3 PHYS 112, SP08, Cui Lecture 25, 04/14/08 What is θ 1 ? A. 40 ° B. 45 ° C. 50 ° D. 90 ° E. None of the above. 4 PHYS 112, SP08, Cui Lecture 25, 04/14/08 Refraction • When a ray of light traveling through a transparent medium encounters a boundary leading into another transparent medium. – part of the ray is reflected from the boundary (____). – part of the ray transmitted into the second medium (____). • The ray that enters the second medium is _______ at the boundary. • This bending of the ray is called __________ 5 PHYS 112, SP08, Cui Lecture 25, 04/14/08 Reflected and Refracted Rays • Ray 1 is the incident ray • Ray 2 is the reflected ray • Ray 3 is refracted into the lucite • Ray 4 is internally reflected in the lucite • Ray 5 is refracted as it enters the...
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This note was uploaded on 04/27/2008 for the course PHYS 112 taught by Professor Cui during the Spring '08 term at UMBC.

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L25Note_Refraction(9) - 1 1 PHYS 112, SP08, Cui Lecture 25,...

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