Why Can't I Hear That?: Pitch and Frequency (Raintree Perspectives: Exploring Sound)
By Unknown Author.
Description
This series about sound covers how sounds are made, how we hear sounds, and how and why sounds vary in pitch, frequency and volume. Every book is packed with interesting, easy-to-understand examples and hands-on, fun experiments with sound. - from Amzon
ISBN(s)
1406274488, 9781406274486
