A linear actuator is a device that creates motion in a straight line, as opposed to rotational motion. It converts energy, often electrical, into linear movement, making it useful in various applications such as robotics, manufacturing, and automation. Linear actuators can be powered by different sources, including electric motors, hydraulic systems, or pneumatic systems. These devices are commonly used in machinery and equipment to control the position of components. For example, they can adjust the height of a table, open and close valves, or move robotic arms. Their precise control and reliability make them essential in modern technology.