The reciprocal motion of the valve train .
ok actually i am looking for the answer also but this is what i have got so far,you can understand cylindrical rotor in comparison to Salient pole machines. In cylindrical rotor, as it rotates, the air gap between the rotor and stator doesnt change due to its cylindrical shape, but for salient pole machine, due to its shap, the air gap changes as it rotates, due to those dents(laminations) and since air gap is fixed for cylindrical rotor,the magnetic path reluctance is independent in respect to its position to magnetic poles
a movement that rotates in a circle
movement of Foucault pendulums and the Coriolis effect on air movement
Scientists were able to prove that the Sun rotates by observing the movement of sun spots over time.
Because of the movement of the stars and other observable stellar object's.
Venus rotates on its axis the opposite direction that it orbits, the opposite of most planets in the solar system. (Note that Uranus rotates on its side.)
The Earth rotates about on a fixed plane that is respect to its vertical axis around the sun.
The Earth rotates about on a fixed plane that is respect to its vertical axis around the sun.
stabilizes, raises, retracts, and rotates scapula; adducts scapula and elevates /depresses scapula stabilizes, raises, retracts, and rotates scapula; adducts scapula and elevates /depresses scapula
A rotation is a movement of an object in a circular motion. A two-dimensional object rotates around a center (or point) of rotation. A three-dimensional object rotates around a line called an axis.
The earth "rotates" on its axis. At the same time it "revolves" about the Sun. Very three-dimensional.
the movement of the Earth that is responsible for day and night is rotation its axis