Light and sound have been studied for a long time. With that knowledge, people have created such important things as telescopes, microscopes, cameras, telephones, radio, television, tape recorders, lasers, compact discs, and MP3 players.
ISBN-13: 9780756543068
Availability: 
Temporarily out of stock
Published: March 2013
Reading Level: Upper Primary, Lower Secondary
Pages: 40
Format: Hardback
Publisher: Capstone
Product Category: Reference / Reference: Biography
