Diagramas de Epstein

Alguns links sobre os Diagramas de Epstein:

Relativity Visualized (Playlist do Youtube com vídeos de Lewis C. 

Simulações dos Diagramas de Epstein (David Eckstein's Relativity Website)

Epstein Explains Einstein Online (David Eckstein's Relativity Website)

Why are space-proper-time diagrams not used more often? (Physics Forums)