"Control of magnetic effects, then, in the sun and the Ringworld floor."
Hindmost, do you get anything in the way of magnetic effects?
We've recorded all possible magnetic effects from three different angles.
In those cases, atoms and the material made up of them will show weak magnetic effects.
I personally do not think it does because only a moving electric current can cause a magnetic effect.
All the little magnetic effects help each other, making a big magnet.
Given appropriate conducting surfaces, this rotation could set up enormous magnetic effects.
In nearby space the magnetic effects would have been deadly.
This would have insulated it from all magnetic effects or any form of pulse detection.
At any rate, there were pronounced magnetic effects about Glow, as the invaders had experienced.