Unit Description and Pretest: Visibility

What will I learn in this unit?
Unit 3 of Module 7 looks at the issue of visibility, discussing these topics:

  1. scattering light
  2. fog
  3. haze
  4. smog
  5. measuring visibility
    • extinction coefficient (bext)
    • visual range (vr)
    • deciview (dV)
    • cumulative frequency


Do I need to do this unit?

Answer these five questions to test your knowledge the material in this unit. A score of four (4) correct or better indicates you have sufficient mastery of the information in this unit!


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