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 beam rotates once every 40 seconds, producing a flash every 10 seconds. The present light uses a single 1000-watt electric filament.
The present light uses a single 1000-watt electric filament. The beam rotates once every 40 seconds, producing a flash every 10 seconds.
The present light uses a single 1000-watt electric filament. The beam rotates once every 40 seconds, producing a flash every 10 seconds.