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2. Streamlight - Wikipedia

   en.wikipedia.org/wiki/Streamlight

   Streamlight is a company located in Eagleville, Pennsylvania, United States, that manufactures flashlights powered by various rechargeable and disposable batteries. [ 2 ] Their product line features hand-held and weapon-mountable lights [ 3 ] as well as a right angle light used by firefighters on their turnout gear . [ 4 ]

3. Mechanically powered flashlight - Wikipedia

   en.wikipedia.org/.../Mechanically_powered_flashlight

   These flashlights can also be distinguished by the technique used to store the energy: a spring, [1] a flywheel, a battery or a capacitor. Since they are always ready for use, mechanically powered flashlights are often kept as emergency lights in case of power outages or other emergencies. They are also kept at vacation homes, cabins, and other ...

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. highline.huffingtonpost.com

   highline.huffingtonpost.com/miracleindustry/...

   Created Date: 1/13/2010 4:29:06 PM

6. Tactical light - Wikipedia

   en.wikipedia.org/wiki/Tactical_light

   A tactical light mounted to the bottom rail of a rifle Tactical light and a target in a low-light environment. A tactical light or weapon light is a flashlight used in conjunction with a firearm to aid low-light target identification, allowing the user to simultaneously aim a weapon and illuminate the target. Tactical lights can be handheld or ...

7. Solar-powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_flashlight

   A solar flashlight with built-in radio. Solar powered flashlights (American English) or solar powered torches (British English) are flashlights powered by solar energy stored in rechargeable batteries. Most of these flashlights use light-emitting diodes lamps [1] [2] since they have lower energy consumption compared to incandescent light bulbs. [3]

8. Guide number - Wikipedia

   en.wikipedia.org/wiki/Guide_number

   Thus, a camera with a fastest shutter speed of 1 / 400 th of a second (one that began exposures 18.75 ms after a bulb was fired with M sync triggering), and which was set to 1 / 25 th of a second, would close its shutter 59 ms after triggering a flashbulb (18.75 ms + 40 ms = 58.75 ms) and would achieve the maximum rated guide number from the No ...

9. Flash (photography) - Wikipedia

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

   t0.1 is the length of time the light intensity is above 0.1 (10%) of the peak intensity; t0.5 is the length of time the light intensity is above 0.5 (50%) of the peak intensity; For example, a single flash event might have a t0.5 value of 1 ⁄ 1200 and t0.1 of 1 ⁄ 450. These values determine the ability of a flash to "freeze" moving subjects ...