Earth’s magnetic field is constantly moving and changing, protecting Earth’s atmosphere from harmful solar winds. Magnetometer stations throughout the world are used to measure temporary changes in Earth’s magnetic field which can affect compasses and navigation systems. Your smartphone also contains a magnetometer which allows your phone to act like a compass but can also be used to measure magnetic fields. Using the CrowdMag app, you can explore the magnetic field around you, whether its affected by Earth’s magnetic field, iron-rich bedrock, or power lines nearby. 

Start your exploration into Geomagnetism with CEEE videos, classroom lessons, lab activities, and more. 

If you have any questions, please email ceee@colorado.edu.