Who invented the electric light?

Swan and Edison invented incandescent lamp at the same time. But not electric lights. Invention and improvement of electric lamp: 1808, British chemist David made the first arc lamp in human history; 1809, the first incandescent lamp was made by Delilah, an Englishman. From 1809 to 1878, inventors have tried out countless incandescent lamps with different structures and filament materials in the past 70 years. 1879, Edison led his creative team and started to invent practical incandescent lamps, which cost 50,000 US dollars and took 1 year, with seven main assistants participating. 1600 materials were tested, and a carbon filament lamp with a life of 170 hours was invented. Later, circuit fuses, lamp holders, lamp holders and other accessories were invented. The invention of bamboo carbonized lamp cost 6,543,800 dollars, and 20 people went around the world to find suitable bamboo. By 1883, Edison bulb company has obtained 2 15 patents. /question/193139.html/child/science/5000/148.htm He devoted himself to the study of making electricity generate light from childhood, and he and Edison invented the practical incandescent lamp almost at the same time. Originally, Swan and Edison had a dispute over the patent right of invention. Later, they settled out of court and cooperated in Britain.