The American laboratory Livermore discovers a new way to create a coherent light: physicists have managed to bomb the common salt of the kitchen with shock waves. Coherent light has all waves in phase, so there are no negative interferences between them and, since all interferences are positive, this light has a great intensity. Until now the laser was the only coherent light that was known, but these physicists have shown that there is another way to produce this type of light.