TERRELL-PENROSE EFFECT

 

The Terrell-Penrose effect describes the visual appearance of objects moving at relativistic speeds. Unlike the Lorentz contraction’s prediction of length shortening in the direction of motion, these objects appear rotated to a stationary observer.

A sphere moving at a speed of v = 0.999 c

Adapted from Hornof, D., Helm, V., de Dios Rodriguez, E. et al. A snapshot of relativistic motion: visualizing the Terrell-Penrose effect. Commun Phys 8, 161 (2025). https://doi.org/10.1038/s42005-025-02003-6.

A cube moving at a speed of v = 0.8 c

Adapted from Hornof, D., Helm, V., de Dios Rodriguez, E. et al. A snapshot of relativistic motion: visualizing the Terrell-Penrose effect. Commun Phys 8, 161 (2025). https://doi.org/10.1038/s42005-025-02003-6.