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Classical Particles

In this course, we are going to concentrate, almost exclusively, on the behaviour of non-relativistic particles of non-zero mass (e.g., electrons). In the absence of external forces, such particles, of mass $m$, energy $E$, and momentum $p$, move classically in a straight-line with velocity
v = \frac{p}{m},
\end{displaymath} (71)

and satisfy
E = \frac{p^2}{2 m}.
\end{displaymath} (72)

Richard Fitzpatrick 2010-07-20