Lecture
This lecture covers the history of television technology, starting from the first television demonstration in 1939 in Zurich to the development of the Eidophor projector by Professor Fischer. The Eidophor projector revolutionized the projection of video images on large cinema screens, using a rotating disk covered with oil to modulate light intensity. The lecture also discusses the collaboration between Dr. Gretner and Sibat in commercializing the Eidophor projector for educational purposes, leading to the establishment of closed-circuit television systems for teaching in universities and hospitals across Europe. The speaker shares insights into the challenges and advancements in television technology, highlighting the transition from Eidophor projectors to laser projectors in the 1980s.