They caught the last hints of daylight and glowed like electric filament.
Alternatively the source material is placed in a crucible, which is radiatively heated by an electric filament, or the source material may be hung from the filament itself (filament evaporation).
LEDs are members of a new family of solid-state lighting technologies that eschew traditional means of illumination, such as electric filaments or plasma discharge, in favor of electronics.
The present light uses a single 1000-watt electric filament, the light from which is magnified by a factor of one thousand by the lens, and spins once every 40 seconds producing a flash every 10 seconds.
The electron biprism consists of a fine, positively charged electric filament (represented as a dot in the figure) bracketed by two plate electrodes at ground potential.
And still he went on inhaling, breathing with something that was beyond breath, feeling the scar on his arm grow hotter and hotter until it was like an electric filament buried in his flesh.
It defines "motor vehicle headlamps which function as main-beam and/or dippedbeam headlamps and to incandescent electric filament lamps for such headlamps."
But this new thing wasn't his heart, or at least Ralph didn't think it was; it felt as if an electric filament had been embedded in the flesh of his forearm.
This is an expensive suite, and it shows, it's got central heating, electric lights-incandescent filaments, lots of them, dim enough you can look right at them-and silk curtains.
Suddenly the lights go out and the sky is full of descending electric filaments that resemble a storm of Tinkerbells, only more lethal.