How to make your own lightbulb

For most of us, a light-bulb is something we buy, a piece of technology beyond our casual understanding.


This video shows how to make an emergency light-bulb with a piece of lead (from a pencil) and a power source.


If you’re looking for a project for your next school fair, this could be it. Variables to experiement with include the thickness of the lead and the size of the power source you use. You may find after making your own, you find it easier to understand the science behind light bulbs available on the market today.


Watch video.



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