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Headlamp attached to a helmet. A headlamp, headlight, or head torch is a light source affixed to the head typically for outdoor activities at night or in dark conditions such as caving, orienteering, hiking, skiing, backpacking, camping, mountaineering or mountain biking.
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.
The term "blowtorch" is commonly misused as a name for any metalworking torch, but properly describes the pressurized liquid fuel torches that predate the common use of pressurized fuel gas cylinders. Torches are available in a vast range of size and output power. The term "blowtorch" applies to the obsolescent style of smaller liquid fuel torches.
A burning torch, discarded on the road in the wake of the Lewes Bonfire Night celebrations. A torch is a stick with combustible material at one end which can be used as a light source or to set something on fire. [1] Torches have been used throughout history, and are still used in processions, symbolic and religious events, and in juggling ...
A propane torch is a tool normally used for the application of flame or heat which uses propane, a hydrocarbon gas, for its fuel and ambient air as its combustion medium. Propane is one of a group of by-products of the natural gas and petroleum industries known as liquefied petroleum gas (LPG).
A butane torch is a tool which creates an intensely hot flame using a fuel mixture of LPGs typically including some percentage of butane, a flammable gas. Consumer air butane torches are often claimed to develop flame temperatures up to approximately 1,430 °C (2,610 °F).
Without the arc, an oxyhydrogen torch can only reach 2800 °C. [2] This is the third-hottest flame after dicyanoacetylene at 4987 °C and cyanogen at 4525 °C. An acetylene torch merely reaches 3300 °C. This device may be called an atomic hydrogen torch, nascent hydrogen torch or Langmuir torch. The process was also known as arc-atom welding.
Torch Lake is a lake in the Northern Lower Peninsula of the U.S. state of Michigan. At 19 miles (31 km) long, is Michigan's longest inland lake, and at approximately 29.3 mi 2 (76 km 2 ), it is Michigan's second largest inland lake, after Houghton Lake .
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