Scientists Unveil Lasers Capable of Casting Shadows

Scientists have demonstrated that lasers can cast shadows, a phenomenon previously thought impossible, by using a green laser to block a blue laser in a ruby crystal. This discovery, published in Optica, challenges traditional notions of shadows and could impact technologies using lasers, like fiber optics. The experiment raises questions about whether the shadow is cast by the laser itself or the ruby crystal, expanding possibilities for laser control.