Conceptual Physics (12th Edition)

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

Chapter 19 - Think and Do: 30

Answer

This is a hands-on demonstration. Try this with your friends, and be prepared to explain the physics of the demonstration to them. By rubbing your wet finger around the rim of a wine glass or a metal bow, you can produce standing waves and produce a pure note.
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