Theories and Experiments The goal of physics is to develop theories based on experiments a theory is aguess, expressed mathematically, about how a system works The theory makes predictions about how a system should work Experiments check the theories predictions Every theory is a work in progressTheories and Experiments ◼ The goal of physics is to develop theories based on experiments ◼ A theory is a “guess,” expressed mathematically, about how a system works ◼ The theory makes predictions about how a system should work ◼ Experiments check the theories’ predictions ◼ Every theory is a work in progress