Astronomy Today Chaisson McMillan, Prentice-Hall, Inc.

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Extra resources for Astronomy Today Chaisson McMillan, Prentice-Hall, Inc.

Example text

Explain how electron transitions within atoms produce unique emission and absorption features in the spectra of those atoms. Describe the general features of the spectra produced by molecules. List and explain the kinds of information that can be obtained by analyzing the spectra of astronomical objects. HTM (2 of 3) [14/12/2002 2:33:34] Astronomy Today In the previous chapter we saw how light behaves as a continuous wave and how this description of electromagnetic radiation allows us to begin to decipher the information reaching us from the cosmos in the form of visible and invisible light.

Astronomy Today, 3rd Edition hyperlinked electronic textbook. This electronic version of the text includes: --Extensive hyperlinking between the table of contents and chapters; between learning objective and corresponding chapter section; between glossary terms, their definitions and related text discussions; between end-of-chapter exercises and related text discussions. A new navigation system allows you to move around within and across chapters without having to go back to the main table of contents.

Explain what is meant by the term "blackbody radiation" and describe the basic properties of such radiation. Tell how we can determine the temperature of an object by observing the radiation that it emits. Show how the relative motion of a source of radiation and its observer can change the perceived wavelength of the radiation, and explain the importance of this phenomenon to astronomy. Astronomical objects are more than just things of beauty in the night sky. Planets, stars, and galaxies are of vital significance if we are to understand fully our place in the big picture—the "grand design" of the universe.

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