Spin

The virtual photons transfer their spinning or corkscrewing energy to the channels that they pass through.

If they pass through electrons, then they make the electrons spin. These then release that energy upon hitting resistance such as the filament in a light bulb. This converts the electron spin into photon spin and heat particles.

Therefore, a light bulb is an example of virtual photon energy transfering into electron spin transferring into photon spin or light.

Virtual photons that go into metals do not make the molecules of the magnet spin.

But when they go through electrons, they make the electron spin. This is because the electron is independent unlike molecules which are fixed with other molecules.

The spin number is the ratio of virtual photons needed to rotate the electron or free particle.

1/2 spin means 2 virtual photons are needed to achieve 1 particle 360 degree rotation.