TY - BOOK AU - Erik Gregersen (editor) TI - The Britannica guide to sound and light SN - 9781615303007 (hb) U1 - 534 PY - 2011/// CY - New York PB - Britannica Educational Publishing KW - Sound-popular works KW - Light-popular works KW - Electromagnetic radiation KW - Physics KW - Acoustics KW - Sound KW - Light KW - FEAS N1 - Includes glossary, bibliographical references and index ER -