Factory Physics[1] is a book written by Wallace Hopp and Mark Spearman, which introduces a science of operations for manufacturing management.
According to the book's preface, Factory Physics is "a systematic description of the underlying behavior of manufacturing systems.
It describes a new approach to manufacturing management based on the laws of Factory Physics science.
There are very specific practical, mathematical relationships that enable one to describe and control the performance of flows and stocks.
The book states that, in the presence of variability, there are only three buffers available to synchronize demand and transformation with lowest cost and highest service level: The book states that its approach enables practical, predictive understanding of flows and stocks and how to best use the three levers to optimally synchronize demand and transformation.