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An electrostatic pinwheel, or corona spinner, attached to a small Wimshurst machine (electrostatic generator) is shown stationary and rotating. Ion wind, ionic wind, corona wind or electric wind is the airflow of charged particles induced by electrostatic forces linked to corona discharge arising at the tips of some sharp conductors (such as points or blades) subjected to high voltage relative ...
A mechanically powered flashlight (UK: mechanically powered torch) is a flashlight that is powered by electricity generated by the muscle power of the user, so it does not need replacement of batteries, or recharging from an electrical source. There are several types which use different operating mechanisms.
Wind exerts a force on a positively charged particle in the direction of the positive electrode. Its potential energy increases as the wind works against the electric field. [4] Ion wind generators use the force of the wind to move charged particles, typically water, against the force of an electric field.
An emergency kit, disaster bag, bug-out bag (BOB), [4] [5] [6] also known as a 72-hour kit, [7] GOOD bag (get out of Dodge), [8] [9] personal emergency relocation kit (PERK), go-bag, survival backpack, or quick run bag (QRB) [10] [11] is a portable kit containing items that would help a person to survive for 72 hours [12] during an escape or ...
Minecraft mods are generally provided free of charge as a hobby. Modders that do make money generate it through revenue sharing on ads on download sites and crowdfunding. This income has allowed some developers to work full time and even open small game studios dedicated to mods or modding platforms. [5]
An induction generator draws reactive excitation current from an external source. Induction generators have an AC rotor and cannot bootstrap using residual magnetization to black start a de-energized distribution system as synchronous machines do. Power factor correcting capacitors can be added externally to neutralize a constant amount of the ...
An engine-generator is the combination of an electrical generator and an engine (prime mover) mounted together to form a single piece of self-contained equipment. The engines used are usually piston engines, but gas turbines can also be used, and there are even hybrid diesel-gas units, called dual-fuel units.
According to the team that created the device, the vibrations from the heart muscles would be enough to allow the generator to power a pacemaker. [2] This would eliminate the need to replace the batteries surgically. In 2012 a group at Northwestern University developed a vibration-powered generator out of polymer in the form of a spring.