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Showing posts from June, 2022

History of Electric Light Bulb: Incandescent lamps, Gas discharge lamp (Fluorescent, CFL) and Led lamps

Electric Light Bulb: Incandescent Lamps, Gas discharge Lamp (Fluorescent, CFL) and Led Lamps           Electric light bulb is one of the greatest invention that truly illuminated human's life.  Though Thomas Edison is credited as the inventor of the electric light bulb as he could manage to develop and manipulate the entire requirements, other eminent  researchers should be honoured for their contributions.   Original carbon-filament bulb from Thomas Edison's  shop in Menlo Park Thomas Edison’s Signature     The history of electric light bulb dates back to 1761 when Ebenezer Kinnersley demonstrated heating a wire to incandescence (means light producing). Next  breakthrough was in 1802, when Sir Humphry Davy could produce incandescent light by passing current through a strip of platinum (taking advantage of its high melting point and inertness for which  it will not react with atmospheric gases), but the light was not bright enough nor did it last long enough. The high cost o