1. Physics of Astronomy Spring 2006 Astronomy & Astrophysics Electromagnetism Seminar: Cosmology & Journals Your research Today: short course on LIGHT

2. When shall we have weekly research reports? Mondays after HW session?

3. Seminar

4. Electromagnetism Giancoli = primary source New! Workshop Physics Module 4 by Laws (Dickinson) on reserve in Library Copy or order Workshop Physics  Light (today)  Potentials (next week)  Circuits through Maxwell’s equations □ Look at SYLLABUS together…

5. Light Ch.33 Reflection & Refraction Ch.34 Lenses & optical instruments Ch.35 Interference Ch.36 Diffraction & Polarization Hitting the high points….

6. Ch.33 Reflection

7. Images formed in mirrors

8. Refraction: v = c/n; n 1 sin  1 = n 2 sin  2 Q.13

9. Refraction

10. Total internal reflection

11. Ch.34 Lenses & optical instruments

12. Object far from converging lens forms real image near focal point. Object close to converging lens forms virtual image.

13. Combinations of lenses (1) Find location of Image 1 → (2) Let this be Object 2 → Find Image 2

14. Simple camera and human eye

15. Corrective lenses

16. Magnifying glass

17. Telescope

18. Ch.35 Interference

19. Huyghen’s principle Every point on a wave front can be considered as a source of tiny wavelets that spread our in the forward direction at the speed of the wave itself.

20. Huyghens explains refraction

21. Interference – Young’s double-slit experiment □ First, PREDICT PATTERNS if light is PARTICLES or WAVES

22. Interference – theoretical explanation

23. Interference bright spots

24. Ch.36 Diffraction & Polarization

25. Diffraction through a single slit Diffraction DARK spots at

26. Diffraction through a double slit

27. Diffraction grating

28. Resolution limits

29. Polarization

30. Polarization by reflection