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
A Lad an' a Lamp A Lad an' a Lamp A Lad an' a Lamp is a 1932 "Our Gang" short comedy film directed by Robert F. McGowan. It was the 119th (32nd talking episode) "Our Gang" short that was released. The film has been criticized as containing racist humor. Fascinated by the story of Aladdin and his magic lamp, the gang gather together with several gasoline and kerosene lamps and lanterns and a few electric lamps hoping that by rubbing them vigorously, a genie will appear. Thanks to a series of coincidences—not least of which involves a friendly stage magician—the kids become convinced that