Dark Lines in the Spectra Observed from Stellar Atmospheres Indicate

question 10

Multiple Choice

Dark lines in the spectra observed from stellar atmospheres indicate that

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

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