The solar motor has a permanent field magnet fixed inside. A permanent magnet does not require an electricity supply and the field direction does not change. The spinning motion of electrons in the atoms of the magnet (in this case a ceramic material) creates a magnetic field.
[pdf] Passive fire protection methods help contain fires, slow fire spread, and protect critical areas in case of a container fire. Fireproof Wall Panels – Install fire-resistant drywall or cement board to create fireproof barriers.
[pdf] 
