Dublin Core
Title
Phonograph
Subject
Physics, Engineering
Description
The phonograph is used to describe the concept of waves and sound travel. This example makes concepts clearer for kids. Depictions of how waves can travel through space and be utilized makes their properties more clear than words can describe.
Creator
Ray Stannard Baker
Source
The Boy's Book of Inventions
Publisher
Doubleday & McClure Co.
Date
1899