Today i read a news about light bulb:The largest light bulb in the world can be found atop the Thomas Edison Memorial Tower in Edison, USA. Built in 1937, the light bulb weighs a staggering eight tons. The tower is situated in the spot where Thomas Edison developed his brand of the light bulb. American mythology claims that Edison invented the light bulb when in actual fact it was Sir Joseph Swan of England.~ it is very interesting! I am considering the light bulb is LED or not!
