This podcast is an excerpt from David Bohm's book on the theory of special relativity. It explores the difficulties encountered by classical physics in the face of Maxwell's electrodynamics, leading to the Michelson-Morley experiment and the theories of Lorentz and Fitzgerald. The book then presents Einstein's conception, the Lorentz transformation, and mass-energy equivalence (E=mc²), while emphasizing the relative nature of the concepts of space and time, as well as the role of invariants in physics. Finally, it discusses the perception and significance of Minkowski diagrams in understanding the reconstruction of the past.