Homonym: insulators (Barrier)
Insulators are materials that do not conduct electricity or heat well. They are used to prevent the flow of electric current or to keep heat from escaping. Common examples of insulators include rubber, glass, and plastic. These materials are essential in electrical wiring and appliances to ensure safety and efficiency.
In addition to electrical applications, insulators are also important in thermal management. For instance, foam and fiberglass are used in building insulation to keep homes warm in winter and cool in summer. By reducing heat transfer, insulators help save energy and maintain comfortable living conditions.