1. All physical effects tend to contribute unsteady and non linear behavior. 2. The equation itself is a fourth order non linear differential equation. 3. This is caused by the non linear distortion that happens in the ear. 4. The gameplay is non linear , with the player left to explore the large world. 5. This made editing using a non linear editing system problematic. 6. Prony estimation is used extensively in signal processing and finite element modelling of non linear materials. 7. I believe this is a non linear problem but do not know the reason for this. 8. Many other interesting theories are non linear , like for example Navier Stokes equations of fluid dynamics. 9. :My guess would be due to non linear gain due to the amplifier element being not ideal. 10. Second, although the resistance scale was non linear , the scale remained correct over the full deflection range.