What is the axis of rotation?
The axis of rotation is a term used in many fields of engineering, mathematics and sciences. It is used to describe the type of movement for objects existing in three -dimensional (3D) space. It is an imaginary direct line drawn by a 3D object around which the object can rotate or spin. Rotation models are used for theoretical and practical applications.
rotation around the axis can only occur in three -dimensional space, which means that the object has length, width and depth. Objects in two -dimensional (2D) space can rotate, but rotation is around the point - either inner or outer - on a flat plane, not on the axis. The image cannot actually rotate around the axis because it does not exist in all three dimensions - it has length and width, but no depth. If a 2D object is mapped on the graph, it can be "turned" around X or Y axis, but it simply turns or turns the picture. The picture is flat and at some point it would disappear if it was spinning through full -body around one axis.
On the other hand, the 3D object can rotate around the axis, but cannot rotate around the inner point. This would cause the object to rotate in many ways simultaneously, along each line that intersects this point and to tear it apart. Thus, the 3D object can turn around only one line or axis. If the 3D object is around the outer point, it is referred to as a revolution, not rotation. For example, the Earth turns on the inner axis and spins around the sun.
objects existing within 3D space may have more than one internal axis of rotation, but cannot rotate around two such axes. For example, if the country has a new axis of rotation, which is perpendicular to its original axis, it cannot spin in opposite directions on both axes simultaneously. When trying to shoot in both directions, it finds a balancing point between them and create a third axis of rotation along this line.
objects that cannot perform full rotation or rotation can still be considered to be rotating around oSy. Ankles and knees, as well as mechanical parts and many other objects, can perform a limited rotation around the inner line. Because these are 3D objects, they are referred to as the axis of rotation, although the rotation itself is limited.