The idea that objects contract in length when they travel near the speed of light is a widely accepted consequence of Einstein’s special relativity. But if you could observe such an object, it ...

Einstein put forth special relativity, which explains motion at near-light speeds. Although there are many consequences of Special Relativity, this complex theory consists of only two postulates, both ...

IN the discussion on relativity at the Royal Society on February 5 (NATURE, February 12), Mr. Jeans stated that the FitzGerald-Lorentz contraction theory presented grave difficulties in the case of a ...

A snapshot of relativistic motion: Experimental data on the Terrell rotation of a deliberately Lorentz contracted sphere at 0.999 c, moving from right to left. (Courtesy: Dominik Hornof et al., "A ...

If the speed of light is to be the same for all observers, then the length of a meter stick, or the rate of a ticking clock, depends on who measures it. Ch Frame Code Title 1 A Opening Sequence 2 ...