Depending on your year/make/model, you could have a malfunctioning IAC valve, or vacuum leak, stuck accelerator cable/linkage, or possibly drive-by-wire issues if your car is equipped with the last one... This Site Might Help You. When my car is in park it revs to 2 rpms. When I put my car into park the rpms are still revving at 1 to 2. And sometimes I hear it happening and notice the arrow going up.
Biomechanics is the study of the structures and materials of human, plant, and animal life and the effect of external stimuli upon these systems. The field is a cutting-edge science, but it has ancient roots.
bionics - application of biological principles to the study and design of engineering systems (especially electronic systems) bioengineering, ergonomics, biotechnology - the branch of engineering science in which biological science is used to study the relation between workers and their environments.