1. Charles Hakes Fort Lewis College1

2. Charles Hakes Fort Lewis College2

3. Charles Hakes Fort Lewis College3 Chapter 2 Light and Matter

4. Charles Hakes Fort Lewis College4 Outline Logistics Lab Notes Light and Matter Waves

5. Charles Hakes Fort Lewis College5 Logistics Test 1 will be Friday next week. 3 minute paragraphs Re-use pages add dates Avoid “about” say something specific.

6. Charles Hakes Fort Lewis College6 Lab Notes Binocular Lab tomorrow (7:00) (weather?)

7. Where does the full moon rise in Durango on June 21? A) North of east (by more than 5°) B) Within 5.2° of due east C) South of east (by more than 5°) D) Not enough information

8. Where does the full moon rise in Durango on June 21? A) North of east (by more than 5°) B) Within 5.2° of due east C) South of east (by more than 5°) D) Not enough information Charles Hakes Fort Lewis College

9. Charles Hakes Fort Lewis College9 Review We don’t constantly have eclipses because the moon’s orbit is tilted 5 degrees. We can see more lunar eclipses than solar. You can only have a chance for an eclipse every six months. The moon has to be crossing the ecliptic on a full or new moon (for an eclipse) http://faculty.fortlewis.edu/hakes_c

10. Charles Hakes Fort Lewis College10 More Moon info… The moon is a quarter the size of the Earth (in diameter) The scale difference between the book to reality is substantially different... With each orbit the moon makes around the earth it rotates once. This is why we always see the same side of the moon....why they call it waxing.

11. Where does the full moon rise in Australia on June 21? A) North of east (by more than 5°) B) Within 5.2° of due east C) South of east (by more than 5°) D) Not enough information Charles Hakes Fort Lewis College

12. Where does the full moon rise in Australia on June 21? A) North of east (by more than 5°) B) Within 5.2° of due east C) South of east (by more than 5°) D) Not enough information Charles Hakes Fort Lewis College

13. Charles Hakes Fort Lewis College13 Chapter 2 The Ring Nebula

14. Charles Hakes Fort Lewis College14 Chapter 2 The Ring Nebula

15. Charles Hakes Fort Lewis College15 Figure 2.1 Andromeda Galaxy

16. Charles Hakes Fort Lewis College16 Radiation Astronomical objects are VERY far away. How do we learn about them?

17. Charles Hakes Fort Lewis College17 Radiation Astronomical objects are VERY far away. How do we learn about them? Answer - light electromagnetic radiation rays waves

18. Charles Hakes Fort Lewis College18 Figure 2.8 Electromagnetic Spectrum

19. Charles Hakes Fort Lewis College19 Figure 2.2 Water Wave

20. Charles Hakes Fort Lewis College20 Waves Waves - a disturbance making a distinctive, repeating pattern. The disturbance is what moves - not the medium.

21. Charles Hakes Fort Lewis College21 Types of Waves Transverse waves in solids example earthquakes

22. Charles Hakes Fort Lewis College22 Types of Waves Transverse waves in solids example earthquakes Compressional waves in solids or liquids or gasses example sound

23. Charles Hakes Fort Lewis College23 Types of Waves Transverse waves in solids example earthquakes Compressional waves in solids or liquids or gasses example sound Electromagnetic waves in nothing (vacuum)

24. Charles Hakes Fort Lewis College24 Wave Properties Period how long one cycle is units are seconds Frequency = 1/period units are Hertz (per second, 1/sec, or sec -1 ) wavelength wave speed (velocity) amplitude

25. Charles Hakes Fort Lewis College25 Figure 2.3 Wave Properties

26. Charles Hakes Fort Lewis College26 Wave Properties Wavelength x frequency = velocity

27. Charles Hakes Fort Lewis College27 Wave Properties Wavelength x frequency = velocity = c

28. Charles Hakes Fort Lewis College28 Which wave is fastest when traveling through space? A) Light from a light bulb B) Green laser C) FM radio waves D) X-rays from a dentist office E) They are all the same speed

29. Charles Hakes Fort Lewis College29 The Speed of Light 299,792.458 km/sec (~= 3.00x10 8 m/s) It’s not just a good idea. It’s the law!

30. Charles Hakes Fort Lewis College30 History of The Speed of Light

31. Charles Hakes Fort Lewis College31 Figure 2.4 Charged Particles

32. Charles Hakes Fort Lewis College32 Figure 2.5 Magnetism

33. Charles Hakes Fort Lewis College33 Figure 2.6 Electromagnetic Wave

34. Charles Hakes Fort Lewis College34 Figure 2.7 Visible Spectrum

35. Charles Hakes Fort Lewis College35 Figure 2.8 Electromagnetic Spectrum

36. Charles Hakes Fort Lewis College36 Which list is in the correct order of electromagnetic radiation wavelength, going from shortest to longest? A) infrared, ultraviolet, gamma, radio B) gamma, x-ray, ultraviolet, visible C) radio, infrared, visible, ultraviolet D) radio, x-ray, ultraviolet, visible E) red, violet, blue, green

37. Charles Hakes Fort Lewis College37 Which is correct A) wavelength / velocity = frequency B) wavelength / velocity = period C) wavelength * frequency = period D) wavelength * velocity = frequency

38. Charles Hakes Fort Lewis College38 Three Minute Paper Write 1-3 sentences. What was the most important thing you learned today? What questions do you still have about today’s topics?