{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

partialBak - particle with that definite value of x(or p or...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
1 of 1 Quantum Mechanics is fundamentally a probabilistic theory. This indeterminacy was deeply disturbing to some of the founders of quantum mechanics. Einstein and Schodinger were never happy with this postulate. Einstein was particularly unhappy and never accepted QM as The act of measuring the position changes the wavefunction according to postulate 4: Postulate 4: If a measurement of position (or any observable property such as momentum or energy) is made on a system, and the result x (or p or E) is found, then the wavefunction changes instantly, discontinuously, to be a wavefunction describing a
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: particle with that definite value of x (or p or E). We say that the wavefunction collapses to the eigenfunction corresponding to the eigenvalue x. If you make a measurement of position, and find the value x o , then immediately after the measurement is made, the wavefunction will be sharply peaked about that value, like so: Actually, the graph on the right should have a much taller peak because the area under the graph on the right. 2/27/2012 © University of Colorado, Michael Dubson | Ψ | 2 x x | Ψ | 2 x o Before measurement After measurement...
View Full Document

{[ snackBarMessage ]}