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The second overview lecture on thermonuclear fusion and fusion technology, organized with the support of the AV21 Strategy program, was held at the University of West Bohemia in Pilsen. The first part of the lecture describes the basic physical principles of nuclear fusion, summarizes important milestones in its technological and experimental development, and describes potential paths to its successful use in future power reactors. The second part of the lecture is devoted to the technical description of fusion technologies (functional components, building elements, supporting infrastructure) and comments on important design features of current and future Tokamaks. During the final part, Dr. Entler mentions areas of nuclear fusion in which the UWB/FEE is also involved, and answers interesting questions from the audience. Lecture content: 0:00:00 Introduction 0:25:41 Inertial confinement 0:37:02 Magnetic confinement 0:45:34 Stellarators 0:49:02 Tokamaks 1:05:58 ITER 1:40:36 Nuclear zone 1:59:46 Nuclear cycle 2:02:52 DEMO Questions: 2:16:03 How complex is the construction of a fusion power plant in terms of technology and finances? 2:19:18 Are there no large losses when transferring energy at such high temperatures? 2:20:37 What multiple of the input energy will we get at the output of a fusion power plant? 2:22:54 Will the fusion power plant draw that large start-up power directly from the grid or does it have its own sources? 2:26:44 Will tokamaks or stellarators be used more in the future? 2:29:41 Do you think any country will be able to have a fusion power plant in the coming years?