Earth itself is a giant magnet. Its outer core is composed of flowing liquid iron-nickel alloy, acting like a "geo-generator" that continuously generates and maintains a magnetic field that surrounds the entire planet. This invisible magnetic field protects us from harmful cosmic rays such as the solar wind and provides a navigational "compass" for many creatures, such as migratory birds and sea turtles. The geomagnetic field is not static; its strength and direction change slowly over time, and its polarity can even reverse. Understanding and perceiving the geomagnetic field is key to understanding the internal dynamics of our planet and its relationship with life and technology. Our "Experience Geomagnetism" exhibit, on a delicate 1400*1400*1600mm operating platform, transforms this grand and mysterious geophysical phenomenon into a hands-on, intuitive experience. At the heart of the exhibit is a highly sensitive geomagnetic sensor and a sophisticated signal processing system. When
