Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 30 - Think and Explain: 55

Answer

Different fluorescent minerals contain molecules with different sets of energy levels.

Work Step by Step

The different sets of energy levels cause different colors to be emitted as excited electrons (excited by the incoming ultraviolet light) fall back to their original ground state.
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