Reflection and Transmission:

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incident from less dense to more dense: reflected part inverted ( $180^\circ$ phase change) transmitted part slows down (v_A > v_B)
incident from more dense to less dense: reflected part no phase change transmitted part speeds up (v_A > v_B)

**Figure 14:** Reflection and transmission on a string
$\begin{figure} \begin{center} \leavevmode \epsfxsize=6 cm \epsfbox{figs/sho7.eps} \end{center}\end{figure}$

gabor@theory.uwinnipeg.ca
2001-01-05