Chapter 6 LIGHT AND TELESCOPES

        Section 6-1: Radiation: Information from Space
        - Read pp 102-106
        - Study Figures 6-1, 6-2, 6-3 (top panel)
  
        Section 6-3: Special Instruments
        - Read pp 116-117 (only need to read about The Spectrograph)
        - Study Figure 6-15

        Summary
        Sec 6-1: bullets 1-4 (of 5)
        Sec 6-3: bullet  3   (of 3)

        New Terms:
        - electromagnetic radiation
        - wavelength
        - photon
        - nanometer
        - angstrom
        - spectrograph  
        - grating