gravimeter

A gravimeter is a sensitive instrument that measures variations in the Earth's gravity at different locations. These variations occur due to factors like changes in underground density, elevation, or material composition. By detecting tiny differences in gravitational pull, gravimeters help scientists study geological structures, monitor volcanic activity, and assist in resource exploration. They operate by detecting the slight acceleration or force experienced by a mass within the device, translating these measurements into data about the Earth's interior and surface features.