Dark Lines That Appear in the Spectra Observed in Stellar

question 14

Multiple Choice

Dark lines that appear in the spectra observed in stellar atmospheres indicate the fact that

• A) atoms that would produce light of the darkened frequency bands aren't present in the atmosphere.
• B) atoms are present in the atmosphere that have electrons that are absorbing photons of those frequencies.
• C) atoms are present in the atmosphere that have electrons that are emitting photons of those frequencies
• D) atoms that would produce light of the darkened frequency bands are forbidden from doing so because of quantum effects.

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