who was the first person who invented the light bulb
Thomas Alva Edison
title: Henry Woodward (inventor) text: necessary components to make the first practical electric light bulb. What is known about Woodward's discovery is that it was patented in Canada and the United States prior to a patent being granted to Edison and it is known that the patent for the Canadian discovery was purchased by Edison when he was making his original investigations and before he obtained his patent. Ricketts, Bruce. The First Electric Light Bulb Henry Woodward (inventor) Henry Woodward was a Canadian inventor and a major pioneer in the development of the incandescent lamp. On July 24, 1874, Woodward and his partner, Mathew Evans, title: Incandescent light bulb text: involving the use of carbon filaments. He died shortly after obtaining the patent, and his invention was never produced commercially. Little else is known about him. In 1851, Jean Eugène Robert-Houdin publicly demonstrated incandescent light bulbs on his estate in Blois, France. His light bulbs are on display in the museum of the Château de Blois. In 1859, Moses G. Farmer built an electric incandescent light bulb using a platinum filament. He later patented a light bulb which was purchased by Thomas Edison. In 1872, Russian Alexander Lodygin invented an incandescent light bulb and obtained a Russian patent in 1874. title: Incandescent light bulb text: 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 title: Incandescent light bulb text: less expensive to produce than Davy's platinum-dependent bulb. However, having perfected the device to his own satisfaction, he turned to the problem of wireless telegraphy and did not develop the electric light any further. His claims are not well documented, although he is credited in "Challoner et al." with being the inventor of the "Incandescent Light Bulb". In 1838, Belgian lithographer Marcellin Jobard invented an incandescent light bulb with a vacuum atmosphere using a carbon filament. In 1840, British scientist Warren de la Rue enclosed a coiled platinum filament in a vacuum tube and passed an electric current through it. title: Henry Woodward (inventor) text: of a practical form of the incandescent lamp." The drawings from Woodward's 1876 United States patent are almost identical to those that appeared in Woodward and Evan's 1874 Canadian patent. The carbon burner, a "most important feature of a practical lamp" differs widely from Edison's filament. Several earlier inventors working on the light bulb had progressed as far in their work as Woodward and Evans: Marcellin Jobard in 1838, C. de Changy in 1856, John Wellington Starr in 1845 and Joseph Swan in 1860. Each contributed to the development of the incandescent lamp, but it was Edison who assembled the