Therblig
Therblig is a term coined by Frank and Lillian Gilbreth, pioneers of industrial engineering, to describe the smallest unit of work that cannot be broken down into smaller, distinct motions. The term is derived from the Greek words "ther" meaning "to do" and "blig" meaning "a unit." Therbligs are fundamental to time and motion studies, which aim to analyze and improve the efficiency of work processes.
The Gilbreths identified five basic therbligs: inspection, transportation, manipulation, assembly, and delay. Each therblig represents a
Therbligs are used in various applications, including ergonomic analysis, process improvement, and workplace design. They help