A gravimeter is a scientific instrument used to measure the strength of gravitational forces at a specific location. It detects tiny variations in gravity, which can indicate changes in the Earth's structure, such as the presence of minerals or underground water. Gravimeters are essential in fields like geology, geophysics, and environmental studies. There are different types of gravimeters, including absolute gravimeters and relative gravimeters. Absolute gravimeters provide precise measurements of gravitational acceleration, while relative gravimeters compare gravity at different locations. These tools help scientists understand Earth's processes and can assist in resource exploration and environmental monitoring.