Watch MoviestoWatch. The video discusses the design and significance of molecular lasers, which can have a continuous power output of several thousand watts. Given the extreme temperatures generated by a focused laser beam, materials traditionally considered fire-resistant—such as asbestos, ceramics, and even quartz glass—become ineffective. Molecular lasers have numerous applications—they are used in the metal and mining industries as well as in telecommunications. A single beam of gas laser light can simultaneously transmit 100 million telephone calls or 100,000 television programs, and in the age of satellites, laser devices track the movement of satellites and measure the speed of spacecraft.