I am still wondering the mechanism of magnetism, such as why and how a current induces a magnetic field? How exactly current flows in copper wire?

I think every atom is made of positive charged nucleus surrounded by negative charged enertron crust with electron skin.

Each atom has a positive electric field and a negative electric field, those field strength are balanced at atom radius, so the atom is electrically neutral.

If for some reason, the nucleus is off center a bit, the atom becomes magnetically polarized, it becomes a dipole. 

North pole attracts south pole because the two poles are electrically opposite, the force is same electric force in nature. 

That's why magnetic monopoles can never be found. They don't exist, just like gravitron.

All things in nature are ruled by force, all things have exact cause/mechanism. 

There is no spooky action at distance, beside gravity, em force, and light.

What is quantum entanglement? They can see particles spinning up and down? See photons spin also?

I love big eyed scientists. Do you?