Science and technology in the United States finish. For example, the British engineer Joseph Swan built an incandescent electric lamp in 1860, almost 20 years before Edison. But Edison's light bulbs lasted much longer than Swan's, and they could be turned on and off individually, while Swan's bulbs could be used only in a system where several lights were turned on or off at the same time. Edison followed up his improvement of the light bulb with the development of electrical generating systems. Within 30 years, his inventions had introduced electric lighting into millions of homes. Another landmark application of scientific ideas to practical uses was the
Moscow Electric Lamp Plant Moscow Electric Lamp Plant Moscow Electric Lamp Plant () is a company based in Moscow, Russia. The Moscow Electric Lamp Production Association has been a leader in the development and production of vacuum tubes for both civil and military use. It is a major producer of cathode ray tubes (CRTs) for color television receivers, and for many years was one of the largest producers in Russia of photoelectronic multiplier tubes (used in light sensing devices). The Association includes three major production facilities: the Moscow Electrovacuum Instrument Plant, which is co-located with the association; the Khromatron Plant, located elsewhere in Moscow;