electric insulators and insulation

Looks at electrical conductors and insulators, examining what they are and how they are used.

Did you know that electric current can be controlled? Have you ever wondered how that might be done? Transistors can act as amplifiers, taking in a small current and sending out a larger one, or as switches, turning electric current on and off. But how do these different transistors work? How are they used in our electronic devices? Discover the history of how transistors were developed, explore how different types of transistors can play different roles in various types of electronics, and learn where transistors may be taking technology in the future!.

Did you know that trees, buildings, and even people can act as conductors for electricity? Or have you ever wondered why we're warned not to go outside during a thunderstorm? Scientists, engineers, and electricians use conductors in their work and research, but conductors are also found in many of the devices and tools we use every day. But how does electricity travel through a conductor? Why are some materials better conductors than others? Discover how a conductor works, as well as what makes a good insulator, and explore how different types of conductors work in modern technology!.

Have you ever wondered how the lights in your alarm clock work? Or have you ever considered how that tiny red light in your TV remote control can send a signal that helps you find your favorite show? What these and countless other bright devices have in common is a light-emitting diode, or LED. But how does an LED work? How is it different from other lightbulbs? Explore the key concepts that make up an LED, including semiconductors, electrons, color, and more, as well as learning how LEDs are used in electronics, to light homes, and even to grow food for astronauts!.

Explains what electrical conductors and insulators are and discusses the scientific concepts behind their use.

Explains how heat and electricity pass through conductors and are stopped by insulators, and provides color photos of everyday examples. Also includes a glossary and further reading list.

Explains how heat and electricity pass through conductors and are stopped by insulators; provides color photos of everyday examples; and includes a glossary and further reading list.

Examines the electrical properties of different materials, and explores how conductors and insulators work.

Introduces children to the concepts of circuits and conductors, explaining how they work and presenting simple experiments to help children understand their basic functions.