Probe Proves Einstein Right

A set of orbiting gyroscopes known as Gravity Probe B has detected a slight sag and twist in the space-time while in orbit around Earth, confirming predictions from Einstein's general theory of relativity with an experiment under development for more than 50 years.

Relativistic Effects in Car Batteries

New calculations reveal that the heavier lead nuclei in conventional lead-acid car batteries attract electrons more powerfully, reaching 60% the speed of light and enabling the generation of 2 V, as opposed to lighter elements such as tin that are too weak to provide similar attractive force.