How Do Light Bulbs Work? | Earth Science

James May explains one of the most important inventions to modern lift: the lightbulb.
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Here at BBC Earth Science we answer all your curious questions about science in the world around you. If there’s a question you have that we haven’t yet answered or an experiment you’d like us to try let us know in the comments on any of our videos and it could be answered by one of our Earth Science experts.
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