Unformatted text preview:  /  dt O d O t > < β β‘ β . Then 2 ) )( ( h β₯ β β t E This is the energytime uncertainty principle where β t is the amount of time it takes for the expectation value of the observable O to change by one standard deviation as follows: t dt O d O β > < β‘ β . If β E is small then the rate of change of all observables must be very gradual or, put the other way around, if any observable is changing rapidly then the βuncertaintyβ in the energy must be large....
View
Full
Document
This note was uploaded on 05/29/2011 for the course PHY 4064 taught by Professor Fields during the Spring '07 term at University of Florida.
 Spring '07
 FIELDS
 mechanics, Momentum

Click to edit the document details