Explore the fascinating realm of gravitational particle production in this comprehensive lecture by Edward KOLB. Delve into the intricate connections between Quantum Field Theory and General Relativity, tracing the historical development of this phenomenon. Examine Schrodinger's groundbreaking 1939 paper and uncover the alarming implications it presented. Investigate the Schwinger effect, critical electric fields, and the small circle approximation. Learn about cutting-edge applications in high-powered lasers and strong electric fields. Discover how these concepts apply to an expanding Universe and the intriguing Swiggler Effect. Gain a solid foundation in Quantum Field Theory notation and the Einstein tensor. This 1 hour and 53 minute lecture, presented at the Galileo Galilei Institute, offers a deep dive into the theoretical underpinnings and practical implications of gravitational particle production.