who invented electricity bulb

The invention of the electric light bulb was a cumulative effort by several inventors over many years. While Thomas Edison is widely credited with inventing the practical and commercially viable incandescent light bulb in 1879, many other inventors contributed to its development. These include Alessandro Volta, Humphrey Davy, James Bowman Lindsay, Warren de la Rue, William Staite, Joseph Swan, and Lewis Latimer. Joseph Swan created a successful incandescent filament electric lamp and demonstrated it publicly before Edison finalized his design. Edison improved upon previous designs by using a thin carbon filament and a better vacuum, which made his bulb last longer and be commercially viable. Lewis Latimer, an African-American inventor, patented a method for making carbon filaments that lengthened the bulb's lifespan. Thus, the electric bulb was not the invention of a single person but a series of advancements by multiple inventors, with Edison and Swan being the most pivotal in creating practical versions used widely.