Incandescent light bulb street in the world to be lit by an incandescent lightbulb was Mosley Street, Newcastle upon Tyne, United Kingdom. It was lit by Joseph Swan's incandescent lamp on 3 February 1879. Thomas Edison began serious research into developing a practical incandescent lamp in 1878. Edison filed his first patent application for "Improvement In Electric Lights" on 14 October 1878. After many experiments, first with carbon in the early 1880s and then with platinum and other metals, in the end Edison returned to a carbon filament. The first successful test was on 22 October 1879, and lasted 13.5 hours. Edison continued
Edison, the Man perfects the phonograph with his devoted staff. Trouble arises when Bunt brags to reporters that Edison has invented the electric light. Since he hasn't yet, he is condemned by the scientific community (encouraged by Taggart, whose gas stocks are threatened by the announcement). Edison “leaves science behind”, and with a Herculean trial-and-error effort, finally succeeds in inventing a practical electric light. His subsequent plans to light New York are again hindered by Taggart, who arranges it so that Edison is only given six months to complete the entire task. Nevertheless, Edison finishes the job just in time. “I’m an inventor.