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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.
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.
The company used Seoul Semiconductor and Cree XR-E LEDs in flashlights introduced in 2007. [11] [12] More recently, flashlights with a strobe function, used for signalling or to disorientate were introduced. [13] A more notable product is the SureFire M6 Guardian, a flashlight with a 250 or 500 lumen beam from a xenon bulb. [14]
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 ...
The Kel-Lite was a highly-durable, weather- and shock-resistant flashlight (UK: torch), made of heavy 6061-T6 aluminium. According to company founder Donald Keller, a Los Angeles County Deputy Sheriff, he began working on the concept in 1964 as he was tired of the lack of durability of the generically available, cheap metal flashlights of the day; the prototype was largely designed by 1968. [1]
That’s not an issue for pocket flashlights. If you need one often, a flashlight isn’t much good if you can’t keep it nearby and easily accessible. That’s not an issue for pocket flashlights.
1900 Frederick Baldwin patents a carbide lamp for use on bicycles. [12] The invention builds on acetylene lamps from the 1890s. 1901 Peter Cooper Hewitt creates the first commercial mercury-vapor lamp.
Maglite flashlights have been known to be used as a ready substitute for a baton. In 2004, the Los Angeles Police Commission moved to use smaller flashlights, with Alan Skobin, the commission vice-president, stating that "This policy makes clear flashlights are for illumination and discourages their use as an impact tool.