who invented bulb?

It was Thomas Alva Edison who developed the first light bulb in 1879 and began selling it a year later in 1880, British inventors were demonstrating that electric light was possible with the arc lamp. After the first steady electric light was produced in 1835, scientists all over the world experimented with the filament (the part of the bulb that produces light when heated by an electrical current) and the bulb's environment for the next 40 years. (whether the bulb is evacuated or filled with an inert gas to prevent the filament from oxidising and burning out.)

The bulb was invented by Thomas AlvaEdison. He was born on 11 February, 1847 in the canal town of Milan. He was known as the America's greatest inventor. He created the world's first industrial research laboratory. His mother name was Nancy, had been a school teacher and his father was Samuel. Edison began working like selling newspaper, magazines and candy. He also printed a newspaper in the train and learned enough telegraphy.