Homeostasis

Homeostasis (from the Greek ὅμοιος - similar, equal and στάσις - immobility, standing; synonym homeostasis) in physiology - the body’s ability to maintain the constancy of the internal environment and the stability of basic physiological functions through coordinated adaptive reactions aimed at maintaining the dynamic constancy of the composition of the internal environment and themes most physiological functions of the body. Homeostasis is maintained due to the counteraction of various regulatory mechanisms to the influences of the external and internal environment.

The homeostat in the compass, the automatic magnetizing needle (not on the navigation one, simply) not only repeats the movement of the magnet from west to east behind the Sun, it also takes into account changes in course when the aircraft changes course and draws the correct compass. Gravitometers are meters of directional movement. The action is based on electromagnetic effect. A conventional compass has a perpendicularly placed magnetic needle, which rotates synchronously around an axis parallel to the north-south direction.