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Derive and/or show the following equations
a. Clearly show the derivation of Bragg's law (for constrictive interface)

b. Show the Laue condition and its relation with Bragg's law

2.
Derive and/or show the following equations (5 pt.)
a. Clearly show the derivation of Bragg's law (for constrictive interface) (3 pt.)
b. Show the Laue condition and its relation with Bragg's law (2 pt.)

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