The detonators were small wire filaments, sufficiently thin that the arriving current exploded each.
In this type of gauge, a wire filament is heated by running current through it.
An incandescent provides light by forcing electric power through a thin wire filament until it glows brightly.
Incandescent bulbs illuminate by passing electricity through a wire filament, but some 90 percent of the energy is converted to heat rather than light.
These are quite similar to the typical glow-plug engine that runs on a mixture of methanol-based fuels with a hot wire filament to provide ignition.
It manufactured the thin, delicate wire filament for all types of electric bulbs.
He was ready to take advantage of the rare "earth element" that went into the making of thin wire filaments.
That would in turn send an electrical current through, and heat, a thin wire filament, similar to those in lightbulbs.
Inside the box, concealed beneath a transparent cover, were a mass of tiny wire filaments.
The mock firecracker's explosion is triggered by a wire filament connected to the electronic device.