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2. Emergency light - Wikipedia

   en.wikipedia.org/wiki/Emergency_light

   An emergency light is a battery-backed lighting device that switches on ... requires some sort of a battery or generator system that could provide electricity to the ...

3. Emergency power system - Wikipedia

   en.wikipedia.org/wiki/Emergency_power_system

   Once the transfer switch is switched and the generator starts, the building's emergency power comes back on (after going off when normal power was lost). Unlike emergency lights , emergency lighting is not a type of light fixture; it is a pattern of the building's normal lights that provides a path of lights to allow for safe exit, or lights up ...

4. Mechanically powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Mechanically_powered...

   The user repeatedly squeezes a handle to spin a flywheel inside the flashlight, attached to a small generator/dynamo, supplying electric current to an incandescent bulb or light-emitting diode. The flashlight must be pumped continuously during use, with the flywheel turning the generator between squeezes to keep the light going continuously.

5. Carbide lamp - Wikipedia

   en.wikipedia.org/wiki/Carbide_lamp

   These type of lights were used until reliable batteries and dynamos became available, and manufacturers switched to electric lights. Acetylene lamps were also used on riverboats for night navigation. The National Museum of Australia has a lamp made in about 1910 that was used on board PS Enterprise , a paddle steamer which has been restored to ...

6. Light and air unit - Wikipedia

   en.wikipedia.org/wiki/Light_and_air_unit

   Units are also equipped with diesel generators, which supply electricity to power portable lights and overall scene illumination equipment. [4] This is usually done via a roof-mounted telescoping light bank. Units may typically supply electrical power in an emergency to a shelter, base camp, or medical facility. [citation needed]

7. Thermal power station - Wikipedia

   en.wikipedia.org/wiki/Thermal_power_station

   A central battery system consisting of lead–acid cell units is provided to supply emergency electric power, when needed, to essential items such as the power station's control systems, communication systems, generator hydrogen seal system, turbine lube oil pumps, and emergency lighting. This is essential for a safe, damage-free shutdown of ...