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2. Baton (law enforcement) - Wikipedia

   en.wikipedia.org/wiki/Baton_(law_enforcement)

   A baton (also truncheon, nightstick, billy club, billystick, cosh, lathi, or simply stick) is a roughly cylindrical club made of wood, rubber, plastic, or metal. It is carried as a compliance tool and defensive weapon [ 1 ] by law-enforcement officers , correctional staff , security guards and military personnel .

3. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   There is a German national regulation for vehicle bulbs, now superseded by international ECE regulations. Bulbs according to the old German regulation are still manufactured. The German regulation is contained in §22a, Subsection 1, No. 18 of the Straßenverkehrs-Zulassungs-Ordnung (StVZO, Road Traffic Approval Regulation).

4. Mechanically powered flashlight - Wikipedia

   en.wikipedia.org/.../Mechanically_powered_flashlight

   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 ...

5. 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.

6. Guide number - Wikipedia

   en.wikipedia.org/wiki/Guide_number

   Cameras with focal-plane shutters—even if they had PC connectors with X, F, M, or S-sync delays ("xenon sync" with zero delay and flashbulbs with peak delays of 5, 20, and 30 ms)—could not be used at speeds that attenuated guide numbers with most types of flashbulbs because their light curves were characterized by rapid rise and fall rates; the second shutter curtain would begin wiping ...

7. Maglite - Wikipedia

   en.wikipedia.org/wiki/Maglite

   1988: One AAA cell battery (Maglite Solitaire) Mag Instrument's key chain flashlight. 2006: Maglite LED Flashlight and Upgrade Module: 3-watt Luxeon III LED from Lumileds. [2] 2006: Mini Maglite LED 2AA. 2008: MagCharger: Upgraded Nickel/Metal Hydride battery pack increases charge time and second generation Halogen bulb increases light output.

8. SureFire - Wikipedia

   en.wikipedia.org/wiki/SureFire

   A more notable product is the SureFire M6 Guardian, a flashlight with a 250 or 500 lumen beam from a xenon bulb. [14] Fifteen M6 flashlights were used to illuminate Stonehenge for the June 2008 cover photo of National Geographic magazine. [15]

9. Flash (photography) - Wikipedia

   en.wikipedia.org/wiki/Flash_(photography)

   For example, if the guide number is 100, and the shutter traverse time is 5 ms (a shutter speed of 1/200s), and the shutter speed is set to 1 ⁄ 2000 s (0.5 ms), the guide number reduces by a factor of √ 0.5 / 5, or about 3.16, so the resultant guide number at this speed would be about 32.