The longitudinal axis of an airplane is an imaginary line running lengthwise from nose to tail. Movement around the longitudinal axis is referred to as "roll" and is controlled by the ailerons. Movement about the longitudinal axis results in a banked attitude of the aircraft (where one wing is higher than the other) and, combined with rudder input causes the aircraft to turn.
Rotation
The crankshaft is an internal component of the engine that converts an up and down movement of the pistons to a rotational movement of the the crankshaft. This is provided to the powertrain for movement. The bottom of the pistons are attached to the crankshaft with main bearings.
longitudinal vibration
No, pronation is not a movement around the longitudinal axis. Pronation refers to the inward rotation of the forearm or foot. Rotation around the longitudinal axis would involve spinning or twisting along the length of the body.
Longitudinal waves have movement that is parallel to the direction of the wave. In these waves, the particles of the medium vibrate back and forth in the same direction that the wave is traveling. Sound waves are an example of longitudinal waves.
It is sound waves
rotation
The circular muscle layer prevents food from traveling backward and the longitudinal layer shortens the tract. By Ah Mok
Rotation is the movement around a longitudinal axis.
No, it is totally unrelated to that.
The movement of energy through substances in longitudinal waves is characterized by the vibration of particles in the same direction as the wave's propagation. This results in a series of compressions and rarefactions in the medium. Sound waves are a common example of longitudinal waves.