Originally Posted by lyndonashmore

Not a problem Grey,
I trust that you do accept that the momentum of a photon is in the direction in which it is traveling?
Ah! You do. I trust that you also accept that the light is transverse and that the electric field causes the electron to oscillate up and down. Since this is accepted Physics I trust that you do.
Now, if you remember, I nailed the other two electrons down for simplicity. When your T/V aerial picks up radio signals the electrons move up and down either individually or in 'bulk' depending upon your view point. Where is momentum conserved here? Same thing.