Hystereis
- The phenomenon of the difference between the measured value and the true value depending upon whether the true value is increasing or decreasing
- The graph of true value versus displayed value will have two lines: one for the true value increasing and one for it decreasing
- Causes of hysteresis may include loss of energy as friction or heat with stretching and relaxing of materials (e.g. in pressure transducers) or residual charge in electrical components