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Chapter 5: 1-4 Homework

Course Materials are always under revision! Weblecture content may change anytime prior to two weeks before scheduled chat session for content.

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Scholars Online Astronomy - Chapter 5: 1-4: The Nature of Light and Matter


Reading Preparation

Reading: Astronomy, Chapter 5: Sections 1-4 The Nature of Light and Matter

Study Notes: notes on your assigned reading from the text

Key Formulae to Know

  • Light speed: c   =   λ ν   ν   =   c λ   λ   =   c ν
  • Temperature conversion T F   =   9 5   T C   +   32 T C   =   5 9   ( F     32 ) T K   =   T C   +   273.15
  • Wien's Law λ max   =   0.0029   Km T K
  • Stefan-Boltzman Law (for blackbodies) F   =   σ T K 4 σ   =   5.67     10 8   W m 2 K 4

Web Lecture

Read the following weblecture before chat: Light and how it tells us what's out there (Part 1)

Study Activity

Planetarium program: Use your planetarium program or Wikipedia to lookup the temperatures and wavelength of maximum intensity of the following stars: Altar, Procyon, Epsilon Indi, Tau Ceti, Epsilon Eridani, Laland 21185, the sun. Plot the wavelength vs temperature vs temperature roughly on a graph. What relationship do you find?

Optional websites:

Chat Preparation Activities

Chapter Quiz

Lab Work

Read through the lab for this week; bring questions to chat on any aspect of the lab, whether you intend not perform it or not. If you decide to perform the lab, be sure to submit your report by the posted due date.