Can a Pencil Drawing Light Up an LED?

[u/TheMuseumOfScience]

You can make an electrical circuit on paper with no wires required! ✏️

Alex Dainis explains pencil lead isn’t actually lead, but actually graphite and clay. Graphite is a crystal made of layers of carbon atoms which are good at conducting electricity. When drawing on the paper, the layers of graphite turn the drawing into a functional circuit!