• basic phenomena of electron interference
• electron coherence
• interaction of electron waves with an object
• propagation of the object wave in space
• Kirchhoff Diffraction Integral
• Fresnel approximation
• Fraunhofer approximation
• Fourier transforms: general properties and waves
• electron diffraction and the phase problem
• electron imaging by a lens: Fourier Optics
• wave optical Transfer of object information
• electron holography: principles