Cyclic tensile responses. Hysteresis

Magic lives in curves not in angles (Mason Cooley) 

People prefer curves. Why curves Well, sharp contours might convey a sense of threat Ban M. Neta, M. - Psychological Science, 2006). They are associated with negative emotions, whereas curved contours are linked with positive reactions, as symbols of continuity... 

Hysteresis is a concept that has become involved in a lot of intellecmal fields, from economy to philosophy or from history to science from the economic hysteresis describing the physics of unemployment, to hysteresis in hand-eye coordination, or from hysteresis of brain-mind duality to engineering hysteresis used to determine the different routes taken by systems when they change in two directions. 

All of these (so various) fields have a common feature to determine different modifications taken by systems when they change in two directions. 

Hysteresis occurs in many fields of science. Hysteresis is observed in various substances and physical processes. Magnetic hysteresis occurs when a permeable material like soft iron is magnetized by being subjected to an external magnetic field. Thermal hysteresis occurs when the value of a given property of a body depends not only on the body s temperature but also on whether the temperature is rising or falling. 

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