Note: This review is not intended to reteach the chapter. See your notes, text, labs and projects for
           a full selection of testable topics.

1. What type of demonstration reveals light's dual nature?
2. a) Who first suggested the speed of light? b) Who refined its value?
3. a) Light is one example of what type of energy?
    b) Light makes up about what percentage of this type of energy?
4. Which color has the: a) longest wavelength? b) highest frequency?
5. Overall, what type of electromagnetic energy has the: a) longest wavelength b) highest frequency?
6. a) Contrast transparent, translucent and opaque objects. b) Contrast luminous and illuminated.
7. A black object is difficult to see at night. Why?
8. a) Who first studied light in a systematic fashion?
    b) What did his prism reveal about the makeup of white light?
    c) What colors are required to create white light?
9. Our eye can detect about how many colors?
10. Which rainbow colors: a) are pure? b) have components?
11. a) Sketch the solar spectrum b) Which wavelength is refracted the most? (Which color is this?)
12. What color(s) do you see when you look through a: red    filter at: white    light?
                                                                                    yellow            blue
                                                                                    cyan               green
                                                                                    blue                magenta
13. a) What colors result from mixing the following lights: red + green, yellow + blue, red + cyan?
      b) Why do any two secondaries make white light?
      c) Why do complimentary lights make white light?
14. a) Redo Q. 13. with paints. b) How do the additive and subtractive primaries relate?
15. Sketch and label the formation of:
      a) the three types of emission spectra.
      b) an absorption spectrum.
16. a) A solar eclipse creates what two types of shadows?
      b) How do these shadows differ?
17. Define: rectilinear propagation.
18. Contrast a polarizer and an analyser.
19. Name two ways of producing polarized light.
20. Describe how pieces of stressed plastic and polarization are part of the history of modelling.
21. A 300 cd lamp creates what illumination on a screen 7 m away?
22. A surface receiving 60 lux from a 90 cd source would be how far away from it?
23. A surface would receive 45 lux when it is 9 m away from a source of what intensity?
24. a) A photometer at 40 cm is equally illuminated by two lamps, a 70 cd lamp at 5 cm and a
          mystery lamp at 90 cm. Find the intensity of the second lamp.
      b) A photometer at 50 cm is equally illuminated by two lamps, a 90 cd lamp at 10 cm and a
          mystery lamp at 100 cm. Find the intensity of the second lamp.
25. a) A 30 cd lamp at 0 cm and a 45 cd lamp at 90 cm equally illuminate a photometer located
          where?
      b) A 70 cd lamp at 0 cm and a 55 cd lamp at 90 cm equally illuminate a photometer located
          where?
26. a) A screen 4 m from a 400 cd lamp receives seven times the illumination as a second screen at
          what distance from the same lamp?
      b) A screen 2 m from a 300 cd lamp receives eight times the illumination as a second screen at
          what distance from the same lamp?