This proposed warplane checks the boxes on a wish list of 21st Century attributes – utmost stealthiness, ultra-high speed, a ramjet engine, the ability to fire and shoot down hypersonic weapons ...

UC Berkeley scientists used lasers to create a new color, “olo,” letting humans see a vivid blue-green never seen before.

The ground-based laser would then fire for up to an hour, using adaptive optics to counter the effect of the Earth’s atmosphere on the beam. The parabolic reflector on the spacecraft would then ...

Despite what many expect, laser beams don’t remain as straight lines forever. All light diverges over a distance. This makes it hard to create a laser which can do damage from more than around a ...

Directed energy weapons use focused beams for non-contact disruption and precision targeting. Learn how they work and where ...