A, mechanical rotation:
Fan: The fan generates airflow through the rotation of blades.
Windmill: Windmills are driven by wind to generate electricity or for decoration.
Automobile engine: the rotation of the piston and crankshaft in the engine generates power to drive the car.
Second, the celestial movement:
Earth rotation: the earth rotates around its own axis, forming a day and night alternation.
Planetary revolution: The planet revolves around a star (such as the sun) and rotates periodically along an elliptical orbit.
Third, dance movements:
Rotating dance steps: In ballet, modern dance and other dances, there are many rotating movements, such as the dancer's spiral turn and twist.
Twist: In dance or gymnastics, the human body can rotate in different ways, such as rollover and forward roll.
Fourth, sports:
Gymnastics: Gymnasts often perform amazing spinning movements, such as tumbling in the air and trampoline.
Skating: In figure skating or speed skating, athletes rotate in various ways, such as spinning, jumping and turning.
V. Physics and Mathematics:
Angular momentum: when an object rotates, angular momentum will change, and angular momentum is one of the physical quantities that describe the rotating motion.
Rotation matrix: In linear algebra, a matrix can represent rotation and transformation in space.
Six, rotation in biology:
Rotating growth of plants: stems, leaves and other parts of plants often rotate around the axis.
Rotational movement of animals: Animals sometimes perform rotational movements, such as turning over and turning their legs.
Rotation is a very common and diverse form of movement, which is widely used and manifested in nature, human activities and various scientific and artistic fields. These rotating movements in different fields show rich forms and uses, which bring colorful experiences and cognition to our life and knowledge world.