If A Tree Falls Does It Make A Sound?

[devonin]

Originally Posted by arelik

Quoted from Wikipedia, the 'sound' article. http://en.wikipedia.org/wiki/Sound
"By sound, we commonly mean the vibrations that travel through air and can be heard by humans. However, scientists and engineers use a wider definition of sound that includes low and high frequency vibrations in air that cannot be heard by humans, and vibrations that travel through all forms of matter, gases, liquids, solids, and plasmas."

The scientific definition of sound shows that a "receiver" is not required for it to exist.

Actually that definition says nothing of the sort. It says "Things can be sounds that are not able to be heard by humans" That says nothing about sound with no reciever. It says something about sound with no -human- reciever.