Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Lecture #11 Refraction, Dispersion, Total Internal Reflection February 23rd Spring 2015 Prof. Liviu Movileanu Room 211, Physics Bldg., Major Concepts of Physics PHY102

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 1.The refraction of light: Snell’s law 2. Conceptual examples 3. Dispersion/Rainbows 4. Total internal reflection/Demos/Applications 5. Announcements/Reading assignments Lecture objectives

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Wavefronts and rays at a glass-air boundary

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Laws of refraction 2. The incident ray, the transmitted ray, and the normal all lie in the same plane – the plane of incidence. 3. The incident and transmitted rays are on opposite sides of the normal. 1.

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University All rays lie in the same plane

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Indices of refraction of various materials

Major Concepts of Physics PHY102 – Lecture #  Syracuse University Conceptual example 23.2

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Conceptual example

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Physics at home 10

Mirage seen in the desert in Namibia Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 11

Superior mirage seen in Finland Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 12

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Dispersion of white light by a prism

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University How does a rainbow work?

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University

Major Concepts of Physics PHY102 – Lecture #  Syracuse University Total Internal Reflection (TIR)

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University Total Internal Reflection in Prisms 1 2

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University TIR applications – Fiber Optics

Major Concepts of Physics PHY102 – Lecture #  Syracuse University Conceptual example 23.3

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 20

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 21 Conceptual example 23.3

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 22

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University TIR Applications: Endoscope & Arthroscope

Major Concepts of Physics PHY 102 – Lecture #  Syracuse University 1.Reading Assignment 1.Reading Assignment: Chapter 23 rd Section 23.3 The refraction of light Section 23.4 Total internal reflection Conceptual examples 23.2 – The refraction of light Conceptual example 23.3 – Total internal reflection 2. Homework. 2. Homework. HW #4 assignment is due on this week’s lab (Please come to see me, if you have questions). 3. This week’s workshop: 3. This week’s workshop: Reflection, Image Formation on Plane and Concave MirrorsAnnouncements