>>11549957alternating electric field creates a magnetic field
alternating magnetic field creates an alternating electric field
etc.
you get a electromagnetic field whose value is like a wave
turns out you can snip out the waves at regular intervals and get a packet of a wave which is called a photon
it's that whole c = lambda/h story i think
if you mean visible light, it's just a photon with certain values for lambda that ur eye evolved to see :)
