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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 ...
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.
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 .
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 ...
Liquid-fueled torches are pressurized by a piston hand pump, while gas torches are self-pressurized by the fuel evaporation. 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.
The intentional ignition of fires is a common firefighting tactic. A burnout (also called a firing operation, firing out or a back burn) is a smaller fire ignited along a control line ahead of the main fire.
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 hydrogen and oxygen torch is used to work quartz as requires higher temperatures than other types of glass. Quartz is resistant to extreme temperature variations and chemical corrosion, making it especially useful in scientific applications. Quartz has recently gained popularity in artistic glass work but is only available a few limited colors.