The truth about bulb inventer।thomas edison never invented a bulb।

 do you know? In fact, Thomas Edison never invented the bulb.

        Friends have always taught you in school or college Thomas Edison invented the bulb and also told how it came to be Guys, this is the biggest mistake because Thomas Edison never invented the bulb In reality, Thomas Edison only explained how a bulb can be lit for a long time In fact, the invention of the bulb was invented by Joseph Swann before Thomas Edison If you go to google for more information, you will find that the bulb was invented by Joseph Swann before Thomas Elva Edison So friends, if anyone ever asks you who invented the bulb, tell them it was done by Joseph Swann.