-The diagram illustrates a light source,a gas cloud,and three different lines of sight the observer is located at the numbered positions) .Along which line of sight would an observer see an emission spectrum?

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-The diagram illustrates a light source,a gas cloud,and three different lines of sight the observer is located at the numbered positions).Along which line of sight would an observer see an emission spectrum?

-The Diagram Illustrates a Light Source,a Gas Cloud,and Three Different