From:
Very nice, watching electrons move!
From:
Very nice, watching electrons move!
Science Daily doesn't seem to know much about the science being talked about.
If an electron is to move from a low energy state in graphene to a higher energy state, it just has to get the extra energy.
Crossing the "forbidden" energy levels between the low and higher energy states isn't impossible, but you can't do it by making tiny incremental changes in the electron's energy, Bashing it was a high energy photon has always worked fine.
Einstein's 1905 paper spelled out what was going on.
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