1. Compare the technique of identifying chemicals by their spectral line patterns with that of identifying people by their fingerprints. 2. Suppose you look up at the night sky and observe some of the...

1. Compare the technique of identifying chemicals by their spectral line patterns with that of identifying people by their fingerprints.

2. Suppose you look up at the night sky and observe some of the brightest stars with your naked eye. Is there any way of telling which stars are hotter and which are cooler? Explain.

3. How can we exclude Earth’s atmosphere as the source of the iron absorption lines in Figure 4-6?

Figure 4-6