Conceptual Physics (12th Edition)

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

Chapter 30 - Reading Check Questions (Comprehension): 10

Answer

A mercury-vapor lamp puts out a greater fraction of its energy as visible light than an incandescent bulb lamp does. It is a more efficient lamp. The rest of the energy is "wasted" as heat, or emitted as frequencies of electromagnetic radiation that are invisible.

Work Step by Step

This is discussed on page 565.
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