The Definition of Spacetime

Exploring the concepts of space and time, the book introduces a "frozen universe" to define a segment of time between two events. It presents a unique perspective on an absolute stationary point in the universe. The narrative features notable figures, including Tang Ke-Yun, who demonstrated that gravity travels at the speed of light, and Stephen Hawking, a renowned physicist. Through these discussions, the book delves into profound scientific theories and their implications for our understanding of the universe.