Why did thomas edison envent the lightbulb?
Before Edison there was oil lamps and candles. Both of these were a cause of fires that burned down cites. Electricity was believed to be able to create light in the fact that a spark produced light as much the same way as a lightening bolt. It took 1000 attempt to come up with a filament that did not burn up and it was the idea of removing the air from the filament to produce the light which was enclosed in a glass bulb. Edison made light via the carbon rod or electric arc which was used in the motion picture business that was the main focal point of his interests. Edison invention was the product of necessity for his motion picture business.
