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SHRI Group Stages of Evolution of light. Invention of Halogen Bulbs, Year 1956 A halogen bulb has a filament made of Tungst… | Bulb, Light bulb, Incandescent lamp
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Who really invented the light bulb? | BBC Science Focus Magazine
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How Incandescent Light Bulbs Work — 1000Bulbs.com Blog
How light bulb is made - material, manufacture, history, used, parts, components, structure, industry, machine
SunWeb: To Make a Light Bulb
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