👉 In physics, an antihemisphere is a type of surface that is opposite to a magnetic field. This means that it is located in front of a magnetic field and has no current flowing through it. The antihemispheres are often used in magnetometers to measure the strength of magnetic fields. They can also be found in other areas of nature, such as in the Earth's magnetosphere, where they create a shield around the planet that protects it from external magnetic fields.
