BULB (invent)

                                                      BULB                          

Its is a device that produce light by heating a metal filament joule effeet,specifically tumgsten, to put it in the red-white, whit electric,current.

Whit existing technology, currently they are considered in efficent since the 85 electricity consuming transforms it into heat and only the 15 reaming in light. The merit of having created the incadescent lamp,light bulb, correspond to the Americem ,inventor Thomas alva Edison in 1879 al though currently it is knomn that in fact it had alveads evised years earlie and Edison to improved it and made it knom to in the case of the light bulb, Edison demostrated hom it worked before 3,000 people at park in 1879 and kept it on for 48 hours so that everyone could see its utility. Three years later  he opened in New york the first power satation in the streets. The first street that had the honour to be illuminated was wall street, in Manhattan.