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結果 : what material is a bulb made of
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How Do Light Bulbs Work? | Earth Science

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Graphene light bulb made of 'wonder material' - BBC News

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Light Bulb Filament Without glass | Science experiment

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||Why is the filament of an electric bulb made of tungsten?

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How to make a light bulb Experiment (homemade light bulb)

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How the gas mantle made lamps 10X brighter

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Philippines: Plastic Bottles go Solar | Global 3000

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Electric circuit made with bulb , wire , battery and pin #shorts

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Power a Light Bulb with Mud! DIY Science Battery

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LED Bulb Manufacturing Process - LED bulb business

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LED bulb PBT housing making by Powerjet high precision injection molding machines

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Touching mercury

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How to Make Table Lamp at Home । Easy And Simple । 2019

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Simple Science Experiments | Glowing Bulb From Salt Water #shorts #viral #trending #experiment

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LED BULB Manufacturing Process // How to make Led Bulb in hindi

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How to make a practical rechargeable lamp

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Why Tungsten Metal is used for filament of an electric bulb ? Electric Current Class 10 Science

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Ocean in a Light Bulb. Lighthouse Diorama / RESIN ART

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