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
Edison State Park Edison State Park The Edison State Park is located in the Menlo Park section of Edison, New Jersey. It is located on Christie Street, the first street in the world to be lit up by lightbulb, just off Lincoln Highway, near the Metropark Train Station. It covers a total area of . The park commemorates the site where the famous inventor Thomas Alva Edison had his Menlo Park laboratory. In his laboratory, Edison invented over 600 inventions such as the incandescent electric light and the phonograph, the latter being the first object to record and play sound. The research and