Conceptual Physics (12th Edition)

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

Chapter 31 - Think and Discuss: 72

Answer

It is because the wavelengths of everyday moving objects is extraordinarily small.

Work Step by Step

The de Broglie wavelength can be written as h/mv. The momentum term for everyday things is huge relative to that of subatomic particles because the mass term is so many times larger. The large momenta result in incredibly short wavelengths. See footnote 3 on page 590.
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