Waves and the earth

This book is aimed at anyone seeking to understand the technologies involved in the exploration and study of the Earth using electromagnetic or sound waves. It sets out to give simple and clear expia-nations of the progress made using concepts that appear simple at first sight, but which are used in highly sophisticated ways. The book also examines the various techniques employed in exploring both the infinitely big and the infinitely small. It will help give ail of us an insight into a subject that has long been a source of fascination for mankind as a whole.