When an object vibrates due to a generating force there are a number of ways that the motion of the vibration can pass through the material. Here is a list of the various ways a material can vibrate. This page is eventually planned to have visual examples of the ways the vibrations propagate through the materials as well as breakdowns to the relevant modes.  

===Transverse Vibration===
The most common form of vibration in string instruments, occurs when a string is plucked, struck, or bowed. This is also the primary form of vibration on drums and bar percussion instruments.


===Lateral Vibration===
A perpendicular vibration pattern to that found on Transverse Vibration, this pattern typically vibrates perpendicular to the shortest end of a vibrating object and is difficult to maintain and will often decay to transverse vibration or torsional vibration.


===Longitudinal Vibration===
Fundamental behavior of such instruments as the [[Long-String Instrument]] and [[Cristal Baschet]], rarely the playing technique on string instruments or [[lamellophone]]s also sometimes used on metal and glass tines. Paradoxically this is also the primary way sound vibrates inside of tubular wind instruments in the form of standing waves.


===Torsional Vibration===
A pattern of vibration defined by the circular rotation of an object, with both vibrating sides rotating counter to one another.\\
Here is a visual example of torsional vibration of a free bar drawn by Jeff La Favre((http://www.lafavre.us/tuning-marimba.htm)) \\
{{http://www.lafavre.us/first-torsional-composite.gif}} \\

===Radial Vibration===
A vibration pattern displayed by the expansion and contraction of an object.
