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--- classes:2009:fall:phys4101.001:q_a_1005 [2009/10/05 10:27] – x500_stans028
+++ classes:2009:fall:phys4101.001:q_a_1005 [2009/10/05 20:08] (current) – yk
@@ Line 40: / Line 40: @@
 On page 78 Griffiths says that κ is real.  How can κ be real if E is positive?  Can E be negative?
-====Links====
+===Captain America - 10:43- 10/05/09===
+In the example here we are only considering bound states, which all have a negative E value by the definition of bound states (since the potential is defined as 0 and the bottom of the well is defined as <math>-V_0</math>).  κ is only real in these situations, and for scattering states where the E is positive κ will have an imaginary term I believe.
+==== time to move on ====
+It's time to move on to the next Q_A: [[Q_A_1007]]
+--------------------------------
 **Return to Q&A main page: [[Q_A]]**\\
 **Q&A for the previous lecture: [[Q_A_0930]]**\\