Lighthouses have guided mariners safely home for centuries, with the first lighthouse reportedly constructed in ancient Egypt (although it was later destroyed). Although GPS is now in everything from ...

KITTERY, Maine — Our cultural image of the classic New England lighthouse typically includes the rotating beam which guided mariners to safety for generations. This traditional system was restored ...

By striking a gold nanorod off-center with an electron beam, researchers found a simple way to make light spin.

A few decades ago, lightbars were the only form of emergency lighting on a patrol vehicle aside from (maybe) a spotlight. Those early lightbars had one or two rotating lights that weren’t very bright, ...