The gas in the tube is stimulated, by an electrical discharge in the case of a helium-neon laser, and the stimulated photons bounce back and forth between the mirrors until some finally blast out ...

Expert sommeliers can take a whiff of a glass of wine and tell you a lot about what's in your pinot noir or cabernet sauvignon. A team of physicists at CU Boulder and the National Institute of ...

When we see a CO 2 laser cutter build around these parts ... We’ll further assume that stealing nitrogen for the lasing gas mix from car tires was just prank, but we did like the rough-and ...