1. I have heard that if you take 4 batteries and 2 non-coated wires, and run the wires + to -, with current flowing in opposing directions, with the wires in close proximity, that a magnetic field will be created between the 2 wires. Is this true? 2. Since photons have no charge, is there any interaction between magnetic waves and photons? 3. If you were to take a piece of magnetic shielding of sufficient length and wrap it around the circumference of one end of a cylindrical magnet, since the N/S fields would no longer be able to "close the loop", what would happen to the fields?