THE AMATEUR SCIENTIST.

The article focuses on visual spectacles produced by lasers. Lasers have been used to enhanced lightings of a stage set for concerts and other performing arts presentations. Laser beams directed upward through a thick fog of dry ice vapor make the beam more visible because small droplets of the fog scattered the light. Multicolor lasers can split the cone into different colors by putting into the beam a dispersing device. Also, the explosion of gunpowder serves the purpose of putting into the air a number of particles that will scatter the laser light.