Don’t try this at home!
I talked about the interesting structure of graphite (aka pencil lead) in our latest video:
But I didn’t have time to touch on one of the fascinating side effects of this structure - graphite’s conductivity. A single, two-dimensional sheet of graphite (known as graphene) is the most conductive material we know about. Diamond is among the least conductive materials we know about.
Impure graphite - like the stuff we find in pencils - is somewhere in between. It’s more conductive than sea water and less conductive than steel. As free electrons flow through it, it lights up like a filament and puts out a lot of heat.
Some risk-taking YouTubers (MausolfB Education and ElectroBoom) demonstrated this property so you don’t have to.
Diamond photo credit: Macroscopic Solutions, Graphite photo credit: DerHexer
(via chemistry-official)
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