In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat previously thought impossible, as light typically passes through other light ...

The laser’s early years were full of scientific creativity, public-relations spin and intense rivalry. Pauline Rigby describes how a then little-known scientist became the first person to design and ...

In a recent study, researchers from the University of Ottawa have demonstrated a remarkable new phenomenon: a laser beam casting a visible shadow. Typically, photons - light particles - pass through ...