How Do Blinking Lights Work?
Lights Are Electric Circuits Regardless of their additional functions, lights are essentially a simple electrical circuit. When exposed to a power source, electricity flows from the power source through a length of wire, through the light bulb, and back to the electrical ground. As current flows through the light bulb, it traverses a special section of wire known as a filament; the filament is resistant to electrical flow, and the resistance to the electrical current causes it to both glow and produce heat. Depending on the type of light and its application, the flow of electricity may be controlled with an electrical switch capable of breaking the circuit to interrupt the flow of electricity; when the circuit is broken and electricity stops, the light bulb no longer illuminates. Bimetallic Strips To make lights blink, manufacturers use a special type of filament known as a bimetallic strip. Like normal filaments, bimetallic strips are resistant to electricity and glow as electricity p
