Conceptual Physics (12th Edition)

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

Chapter 21 - Reading Check Questions (Comprehension) - Page 401: 19

Answer

Phonograph records capture sound by analog means, reproducing the motions of a needle vibrating against a rotating platter. CDs capture sound by digital means, adding sine waves of various amplitudes to reproduce the complex, original periodic sound wave.

Work Step by Step

This is discussed on pages 397-400.
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