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Grade________________

MatSE 430

2nd Quiz - 1998

Closed book, notes.....20 minutes max

1. Discuss briefly the main sources of contrast for SEM (2) and TEM (1). Explain why there are differences in the ways in which the contrast arises.

2. Discuss briefly and give drawings for the difference in the setup of the TEM for BF, DF, and ED.

3. Contrast methods of specimen preparation for SEM and TEM.