Copyright © 2019
by
The Goodheart-Willcox Company, Inc.
Previous editions copyright 2012, 2008, 2004, 2000, 1996, 1992
Previously published and copyrighted as Technology & Engineering by
The Goodheart-Willcox Company, Inc.
All rights reserved. No part of this work may be reproduced, stored, or transmitted in
any form or by any electronic or mechanical means, including information storage and
retrieval systems, without the prior written permission of
The Goodheart-Willcox Company, Inc.
Manufactured in the United States of America.
ISBN 978-1-63126-886-1
1 2 3 4 5 6 7 8 9 – 19 – 22 21 20 19 18 17
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Front cover images: RAGMA IMAGES/Shutterstock.com (left); LALS STOCK/Shutterstock.com (center);
asharkyu/Shutterstock.com (right); Lena Serditova/Shutterstock.com (background)
Section 1 image: Photobank/Shutterstock.com; Section 2 image: Blazej Lyjak/Shutterstock.com; Section 3 image: asharkyu/
Shutterstock.com; Section 4 image: cozyta/Shutterstock.com; Section 5 image: Scharfsinn/Shutterstock.com