1. Diffraction and the X-Ray Powder Diffractometer.- 2. The TEM and its Optics.- 3. Scattering.- 4. Inelastic Electron Scattering and Spectroscopy.- 5. Diffraction from Crystals.- 6. Electron Diffraction and Crystallography.- 7. Diffraction Contrast in TEM Images.- 8. Diffraction Lineshapes.- 9. Patterson Functions and Diffuse Scattering.- 10. High-Resolution TEM Imaging.- 11. Dynamical Theory.- Further Reading.- References and Figures.- A. Appendix.- A.1 Indexed Powder Diffraction Patterns.- A.3 Mass Attenuation Coefficients for Characteristic K?? X-Rays.- A.3 Atomic Form Factors for X-Rays.- A.4 X-Ray Dispersion Corrections for Anomalous Scattering.- A.5 Atomic Form Factors for 200 keV Electrons and Procedure for Conversion to Other Voltages.- A.6 Indexed Single Crystal Diffraction Patterns: fcc, bcc, dc, hcp.- A.7 Stereographic Projections.- A.8 Examples of Fourier Transforms.- A.10 Numerical Approximation for the Voigt Function.- A.11 Debye-Waller Factor from Wave Amplitude.- A.12 Review of Dislocations.- A.13 TEM Laboratory Exercises.- A.13.1 Preliminary - JEOL 2000FX Daily Operation.- A.13.2 Preliminary - Philips 400T Daily Operation.- A.13.6 Laboratory 4 - Contrast Analysis of Defects.- A.14 Fundamental and Derived Constants.