flashlight

A flashlight (more often called a torch outside North America) is a portable hand-held electric light. Usually, the source of the light is a small incandescent light bulb or light-emitting diode (LED). A typical flashlight consists of a light bulb mounted in a reflector, a transparent cover (sometimes combined with a lens) to protect the light source and reflector, a battery, and a switch. These are supported and protected by a case.
The invention of the dry cell and miniature incandescent electric light bulbs made the first battery-powered flashlights possible around 1899. Today flashlights use mostly incandescent lamps or light-emitting diodes and run on disposable or rechargeable batteries. Some are powered by the user turning a crank or shaking the lamp, and some have solar panels to recharge a battery.
In addition to the general-purpose hand-held flashlight, many forms have been adapted for special uses. Head or helmet-mounted flashlights designed for miners and campers leave the hands free. Some flashlights can be used underwater or in flammable atmospheres.

View More On Wikipedia.org

    Recent Content Tagged With flashlight

  1. gun.deals
  2. gun.deals
  3. gun.deals
  4. gun.deals
  5. gun.deals
  6. Kruejl
  7. gun.deals
  8. gun.deals
  9. gun.deals
  10. gun.deals
  11. gun.deals
  12. gun.deals
  13. gun.deals
  14. gun.deals
  15. gun.deals
  16. gun.deals
  17. gun.deals
  18. gun.deals
  19. gun.deals
  20. gun.deals