Oscillation vs Vibration
In the world of physics of sound and movement the terms oscillation and vibration occupy an important place. Both oscillation and vibration are seen in our daily life and sometimes they are beneficial and at times detrimental. Oscillation of a body is generally in a to and fro manner but vibration can be in all directions. Oscillation is a definite distance covered by the movement about its equilibrium position, vibration is referred to the physical change brought about due to movement of the body. Oscillation can be seen in the swinging of a pendulum clock and vibration in the plucking of guitar string.
What is Oscillation?
Oscillation is the movement of a body from its resting place to the maximum distance it can cover on one side to the maximum distance on the other side and back to its resting place. The maximum distance that the body covers on either side of its resting place is equal from its resting place and is called the amplitude or maximum displacement. The resting point of the body is known as its equilibrium state. Oscillation has a definite time period which means the body takes a definite time to complete one oscillation and will remain same for all oscillations if there is no outer force working on the system. It is known as periodic movement and time taken to complete one oscillation is its frequency.
What is Vibration?
身体的振动是身体在平均位置上的运动，可以是线性，圆形，周期性或非周期性的。当将外力施加到身体上时相反的一侧和这种现象一直持续到摩擦耗尽所有能量以停止。当原子在平均位置停止时，原子的这种运动会导致人体的振动和振动停止。振动的应用用于通过拔出字符串演奏的所有乐器。扬声器由于振动的隔膜而起作用，由于耳鼓的振动，我们听到了声音。引起噪音的振动对我们可能非常有害。机械振动会导致机械零件的快速磨损。
Difference between oscillation and vibration • Oscillation is the definite displacement of a body in terms of distance or time where as vibration is the movement brought about in a body due to oscillation. • Oscillation takes place in physical, biological systems and often in our society but vibrations is associated with mechanical systems only. • Oscillation of a body dissipates energy due to friction which slows it down and ultimately ends the movement but it can be converted to a continuous one by applying external force. Vibrations tend to end after the dissipation of all the energy of the atoms. • Oscillation of a body is used to study the nature of movement and calculations of different energy levels during movement but vibration has a varied range of applications in the industry. • Oscillation is about a single body where as vibration is the result of collective oscillation of atoms. |
Really This article cleared my confusion between oscillation and vibration
in vibration center of mass is at rest while particles of the system are making to and fro motion in oscillation the center mass of the system is making to and fro motion
I don’t find that quite gets it.
Oscillation is uni-nodal, Vibration is multi-nodal.
In a clock pendulum the movement is centred on the point of attachment, so it’s uni-modal.
When you strike a guitar string, the vibration will occur along the whole length, having amplitude peaks at various spots (nodes) spaced along the string. At the lowest possible frequency there will be two nodes, one at each end.
不是那么好，但是很好
两个（看似）类似现象之间的分化非常明显。
Thank you.
TG