When a cup filled with cold water is exposed to air, the water in the air condenses onto the side of the cup. If the cup of cold water is not exposed to air, no condensation will form. The fast-moving ...

Now, Rafi Weill, Baruch Fischer and Omri Gat have theoretically suggested the occurrence of light condensation in a laser system far simpler than that of a random resonator — namely an actively ...