1. Major Concepts of Physics PHY 102 – Lecture #11 1 2015  Syracuse University Lecture #11 Refraction, Dispersion, Total Internal Reflection February 23rd Spring 2015 Prof. Liviu Movileanu lmovilea@syr.edu Room 211, Physics Bldg., 443-8078 Major Concepts of Physics PHY102

2. Major Concepts of Physics PHY 102 – Lecture #11 2 2015  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

3. Major Concepts of Physics PHY 102 – Lecture #11 3 2015  Syracuse University Wavefronts and rays at a glass-air boundary

4. Major Concepts of Physics PHY 102 – Lecture #11 4 2015  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.

5. Major Concepts of Physics PHY 102 – Lecture #11 5 2015  Syracuse University All rays lie in the same plane

6. Major Concepts of Physics PHY 102 – Lecture #11 6 2015  Syracuse University Indices of refraction of various materials

7. Major Concepts of Physics PHY102 – Lecture #11 7 2015  Syracuse University Conceptual example 23.2

8. Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University Conceptual example 23.2 8

9. Major Concepts of Physics PHY 102 – Lecture #11 9 2015  Syracuse University

10. Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University Physics at home 10

11. Mirage seen in the desert in Namibia Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University 11

12. Superior mirage seen in Finland Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University 12

13. Major Concepts of Physics PHY 102 – Lecture #11 13 2015  Syracuse University Dispersion of white light by a prism

14. Major Concepts of Physics PHY 102 – Lecture #11 14 2015  Syracuse University How does a rainbow work?

15. Major Concepts of Physics PHY 102 – Lecture #11 15 2015  Syracuse University

16. Major Concepts of Physics PHY102 – Lecture #11 16 2015  Syracuse University Total Internal Reflection (TIR)

17. Major Concepts of Physics PHY 102 – Lecture #11 17 2015  Syracuse University Total Internal Reflection in Prisms 1 2

18. Major Concepts of Physics PHY 102 – Lecture #11 18 2015  Syracuse University TIR applications – Fiber Optics

19. Major Concepts of Physics PHY102 – Lecture #11 19 2015  Syracuse University Conceptual example 23.3

20. Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University 20

21. Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University 21 Conceptual example 23.3

22. Major Concepts of Physics PHY 102 – Lecture #112015  Syracuse University 22

23. Major Concepts of Physics PHY 102 – Lecture #11 23 2015  Syracuse University TIR Applications: Endoscope & Arthroscope

24. Major Concepts of Physics PHY 102 – Lecture #11 24 2015  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