That Huge 2024 Solar Storm Didn’t Just Light Up the Skies—It Reshaped Space Near Earth
A NASA satellite that suddenly reappeared after going silent gets credit for the remarkable discovery—a pair of temporary ...
BBC1y
Induced and permanent magnetism
it produces its own magnetic field the magnetic field cannot be turned on and off - it is there all the time Bar magnets and horseshoe magnets are examples of permanent magnets. The iron filings ...
BBC4y
Magnetic fields - CCEA Electromagnets
An iron core makes a temporary electromagnet. It loses its magnetism as soon as the switch is opened and the current is switched off. A steel core makes a more permanent magnet. It does not lose ...
EURACTIV2y
Energy-Saving Rare Earth Magnets: political leadership needed
Rare earth permanent magnets offer the most energy-efficient solution for EV motors, reducing battery size by 10-30% per given range and alleviating the already strained gap between supply and ...