British chemist and physicist Sir Joseph Wilson Swan was the man who invented the incandescent light bulb. At a lecture on 18 December 1878 in Newcastle Swan demonstrated his light bulb. Businessman and American inventor Thomas Alva Edison wasn’t the inventor of the incandescent light bulb. In 1878 Edison just began to experimenting with electrical illumination system. On 22 October 1879 Edison got a patent. Also in the same year he successfully tested his first lamp. The very first patent was taken by James Bowman Lindsay in 1835. In 1840 Frederick de Moleyns also was working with incandescent light bulb, but he abandoned his work with electric light and went to solve problems with wireless telegraphy which was also in the inventive step.
The list of 22 inventors of incandescent lamp exist, but the major goes to Sir Joseph Wilson Swan and the second place goes to Thomas Alva Edison.
Who invented the incandescent light bulb