Build A Working Light Bulb From Pencil Lead

Via Youtube

There is a home science experiment that is easy and safe to do. It does not require much in the way of parts or tools and can be completed in about an hour or so. Learning about science and electricity in this way is one of the best ways to form a clear understanding.

To make this homemade light bulb you will need some wires, two alligator clips, a clean glass jar without the lid, some electrical tape and mechanical pencil lead. Youi can experiment with different lead types and diameters to see how it effects the light produced.

 

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