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Lightbulbs

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轉寄 列印
第1級人氣樹(0)
人氣指樹
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How does a lightbulb work?Press a button. Flip a switch. And - like magic - light fills a room. It''s all thanks to the humble lightbulb. This book introduces readers (Ages 6-7) to the simple science of the lightbulb. And it explains how science has continued to improve upon the little glass bulb that so brightens our world.

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