Iron is magnetic so the liquid iron causes Earth to have a magnetic field. The needle of a compass is a small magnet that can turn. It turns around until its own magnetic field lines up with the ...
Some of the most sensitive methods of measuring magnetic fields use interactions of resonant light with atomic vapour. Recent developments in this vibrant field have led to improvements in ...
The sun's magnetic field last flipped toward the end of 2013. What causes this switch in polarity, and is it dangerous for anything on Earth? Let's take a deep dive into the phenomenon of the sun ...