electric current

"Copper was one of the first metals humans learned to work with, and now it's an important component of electronic technology. This . . . text explores the ins and outs of this . . . element. As well as wires, people use copper to make jewelry, cookware, and statues. The Statue of Liberty sports her iconic green color thanks to copper. The metal is even needed by the human body"--Provided by publisher.

Have you ever wondered where the electricity powering your home or school comes from? What about how that electricity travels? In any device that uses electricity, inside is a small path through which that electricity travels, known as a circuit. Whether we see them in these devices or not, circuits are constantly at work. But how do circuits work? How were they invented? Explore the key concepts that make up a circuit, including the power source, conducting path, and load, and learn how circuits power devices of all sizes, from computers to the lights in your home to satellites in outer space!.