A heat sink is a device designed to dissipate heat away from electronic components, such as computer processors or LED lights. It typically consists of a metal, like aluminum or copper, with a large surface area to enhance heat transfer. By absorbing and spreading out the heat, heat sinks help maintain optimal operating temperatures, preventing damage and ensuring efficient performance. Heat sinks work by conducting heat away from the source and releasing it into the surrounding air. They often feature fins or other structures to increase airflow, which aids in cooling. Properly designed heat sinks are essential for the longevity and reliability of many electronic devices.