enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Solar-powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_flashlight

   Solar powered flashlights can be used in remote locations where it is impossible to find any source of electricity except for solar power. [4] A built-in solar cell array in a hand-held product has a very small capacity. The light output and run time of the solar flashlight are limited by the amount of energy that can be absorbed in a day.

3. Mechanically powered flashlight - Wikipedia

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

   A dyno torch, dynamo torch, or squeeze flashlight is a flashlight or pocket torch which generates energy via a flywheel. 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 ...

4. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   A set of modern LED flashlights. A flashlight or electric torch (Commonwealth English), usually shortened to torch, is a portable hand-held electric lamp.Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.

5. Solar lamp - Wikipedia

   en.wikipedia.org/wiki/Solar_lamp

   A garden solar lamp A child in Zambia studying by the light of a lamp charged by solar power during the day. A solar lamp, also known as a solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter.

6. Long-range optical communication - Wikipedia

   en.wikipedia.org/wiki/Long-range_optical...

   Long-range optical communication or free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking over long distances. "Free space" means air, outer space, vacuum, or something similar.

7. Rechargeable battery - Wikipedia

   en.wikipedia.org/wiki/Rechargeable_battery

   Devices which use rechargeable batteries include automobile starters, portable consumer devices, light vehicles (such as motorized wheelchairs, golf carts, electric bicycles, and electric forklifts), road vehicles (cars, vans, trucks, motorbikes), trains, small airplanes, tools, uninterruptible power supplies, and battery storage power stations.