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    Astronomy Today Study Set 1
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    Exam 18: The Interstellar Medium: Gas and Dust Among the Stars
  5. Question
    Explain How "Forbidden" Lines Appear in Spectra of Emission Nebulae
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Explain How "Forbidden" Lines Appear in Spectra of Emission Nebulae

Question 81

Question 81

Essay

Explain how "forbidden" lines appear in spectra of emission nebulae.

Correct Answer:

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These lines correspond to excited states...

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