"Radium" wrote in message
oups.com...
Hi:

Green light has a wavelength of about 510 nm. Is it possible to
generate green light using an AC electric current that has frequency
high enough to have a wavelength of 510 nm? Has this ever been done
before?

AFAIK, an AC current generates electromagnetic waves of the same
frequency of the current. In USA, electric power generators radiate 60
Hz photons.

go the other way, use a large 1 Hz generator to generate a Giant Fat 1Hz
Photon