Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 28 - Quantum Mechanics of Atoms - Search and Learn - Page 828: 8

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The uncertainty principle says that position and momentum are uncertain. In other words, the more precisely you make a measurement of the position, the less precisely you know the momentum (i.e., the greater the uncertainty in the measurement of the momentum). Similarly, the more precisely you determine the momentum, the greater the uncertainty in your determination of the position. The equation for Heisenberg’s uncertainty principle, 28-1, states that when simultaneously measuring position and momentum, there is a minimum value for the product of their uncertainties. Another form of the uncertainty principle (page 808) relates the energy of a system and the time interval required to make that measurement.
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