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An LED flashlight may contain different LEDs for white and colored light, selectable by the user for different purposes. Colored LED flashlights are used for signalling, special inspection tasks, forensic examination, or to track the blood trail of wounded game animals. A flashlight may have a red LED intended to preserve dark adaptation of vision.
Then when the light is turned on (by releasing a mechanical brake), the spring unwinds, turning a generator to provide power to run the light. The purpose of this design, originally invented for use in the developing world, was to improve its reliability and useful lifetime by avoiding or reducing reliance on a battery.
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 mounted to the weapon with the light beam parallel to the bore.
Nesbit highspeed flashlight apparatus. A 1910 brochure for the Nesbit High Speed Flashlight Apparatus says, "Raise up the movable plunger and spread the powder also over the bottom of the plunger chamber, under the head of plunger. Insert the electronic squib well into the hole for same, as shown by Fig. 7.
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Britain's bimble: Walking without purpose In contrast to the structured social nature of the passeggiata, the British concept of a "bimble" embraces a more free-form approach to walking.
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