Graphite is black. A color that it also owes to its conduction electrons. These, in fact, interact with the photons that strike the material. They absorb their energy and thus make the graphite opaque. © Daniel Schwen, Wikipedia, CC by-sa 2.5
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Graphite is black. A color that it also owes to its conduction electrons. These, in fact, interact with the photons that strike the material. They absorb their energy and thus make the graphite opaque. © Daniel Schwen, Wikipedia, CC by-sa 2.5