A robotic arm is a mechanical device that can move and manipulate objects or tools in a precise manner, similar to how a human arm moves. It typically consists of an articulating arm with joints that allow for a wide range of motion, controlled by motors and computer software. Robotic arms are commonly used in industries such as manufacturing, assembly line work, and packaging, where they can perform repetitive tasks quickly and efficiently without the need for human intervention. They may also be used in other fields such as medicine or space exploration, to carry out delicate operations that require precision and accuracy.