Overview:
The discovery of how the density of several elements affects sound, what is needed for sound to be present, and how sound works. The pitch of a person's voice compared to that of a musical instrument is discussed, along with how changing the speed of sound affects the pitch of the voice, and how the pitch can be changed.
Release Date : 1999-09-26
Genre : -
Duration : 30 menit
Rating : ⭐ 0/10 (0 votes)
Actors : Michael Kinney, Chris Robinson