Translation Tay Du Ky
The first incandescent light bulb, was stranded for a carbon rod immersed in a glass ampoule which was done in a vacuum. Under these conditions the filament incandescent light produced when it was crossed by the current and did not burn because of the lack of oxygen. The coal to emit light over a large heat generated. Edison as a material for the wire experienced over time chips of wood, celluloid, coconut fibers, cork, string and even hair beard. Ultimately, the problem still remains the same, the amount of electricity consumed by a light bulb turns on the heat and 85% in only 15% into light.
The first incandescent light bulb, was stranded for a carbon rod immersed in a glass ampoule which was done in a vacuum. Under these conditions the filament incandescent light produced when it was crossed by the current and did not burn because of the lack of oxygen. The coal to emit light over a large heat generated. Edison as a material for the wire experienced over time chips of wood, celluloid, coconut fibers, cork, string and even hair beard. Ultimately, the problem still remains the same, the amount of electricity consumed by a light bulb turns on the heat and 85% in only 15% into light. 
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