noun
- the magnetic field of the Earth and the study of its properties and effects
Usage: scientific/technical term; uncountable
Examples
- Geomagnetism plays a crucial role in protecting Earth from solar wind.
- Scientists study geomagnetism to understand magnetic storms and auroras.
- The compass works because of geomagnetism, which aligns the needle toward the magnetic poles.
- Changes in geomagnetism can affect satellite communications and power grids.
- Geomagnetism has been used for navigation by humans and animals for centuries.
- Research in geomagnetism helps predict geomagnetic disturbances.