Visual Sound

Here is a great link to a visual way of understanding sound.  Sound is, in fact, a mechanical longitudinal wave of energy.

We sonographers take for granted that the transducer we place upon the patient is doing "something", but many of us do not understand the physical principles involved.  I will post a link to give us all a visual reference to what happens when a sound is created.  Enjoy.

Thanks Fluke Corp, and Nag on the Lake, and Gerard.

http://www.youtube.com/watch?v=W4s2UwKm7dc&feature=youtu.be