Explore the fundamentals of Transmission Electron Microscopy (TEM) in this comprehensive 58-minute lecture from the NACK - Nano-Educators Topical Seminar Series. Delve into the inner workings of transmission electron microscopes, including their parts, terminology, and comparison with other microscopy techniques. Learn about electromagnetic lenses, electron paths, image formation, and various imaging modes such as bright field and dark field. Witness a live microscope demonstration and gain insights into sample preparation techniques for both hard materials and biological specimens. Discover the applications of TEM grids, Bragg diffraction, and Selected Area Electron Diffraction. This in-depth presentation covers essential topics for understanding and utilizing TEM in nanoscale research and analysis.