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  2. Log splitter - Wikipedia

    en.wikipedia.org/wiki/Log_splitter

    A woman using a gasoline-powered log splitter to split firewood. A log splitter is a piece of machinery or equipment used for splitting firewood from softwood or hardwood logs that have been pre-cut into sections (rounds), usually by chainsaw or on a saw bench. Many log splitters consist of a hydraulic pump or electric motor which then powers a ...

  3. Split-rail fence - Wikipedia

    en.wikipedia.org/wiki/Split-rail_fence

    Simple split-rail fence Log fence with double posts (photo taken in 1938). A split-rail fence, log fence, or buck-and-rail fence (also historically known as a Virginia, zigzag, worm, snake or snake-rail fence due to its meandering layout) is a type of fence constructed in the United States and Canada, and is made out of timber logs, usually split lengthwise into rails and typically used for ...

  4. Electric fence - Wikipedia

    en.wikipedia.org/wiki/Electric_fence

    In 1962, another New Zealand inventor, Doug Phillips, invented the non-shortable electric fence based on capacitor discharge. [16] [17] This significantly increased the range an electric fence could be used from a few hundred metres to 35 km (~20 miles), and reduced the cost of fencing by more than 80%. [18]

  5. Power dividers and directional couplers - Wikipedia

    en.wikipedia.org/wiki/Power_dividers_and...

    These two junctions split power equally, but because of the different field configurations at the junction, the electric fields at the output arms are in phase for the H-plane tee and are 180° out of phase for the E-plane tee. The combination of these two tees to form a hybrid tee is known as the magic tee. The magic tee is a four-port ...

  6. Flow splitter - Wikipedia

    en.wikipedia.org/wiki/Flow_splitter

    A flow splitter, in hydraulic engineering, is any device designed to break up the flow of water or nappe over a dam wall or weir.Flow splitters are used to reduce the likelihood of nappe vibration that might cause the failure of a dam wall by aerating the water flow.

  7. Energy efficiency in transport - Wikipedia

    en.wikipedia.org/wiki/Energy_efficiency_in_transport

    Electric kick scooters, part of a scooter-sharing system, in San Jose, California. Electric kick scooters, such as those used by scooter-sharing systems like Bird or Lime, typically have a maximum range of under 30 km (19 mi) and are commonly limited to a maximum speed of 25 km/h (15.5 mph). [26]

  8. Joule thief - Wikipedia

    en.wikipedia.org/wiki/Joule_thief

    Joule thief with regulated output voltage Example of a joule thief circuit driving an LED. The coil consists of a standard ferrite toroid core with two windings of 20 turns each using 0.15 mm (0.006 inch) diameter wire (38 swg) (34-35 AWG). The circuit can utilize an input voltage down to about 0.35 V and can run for weeks using a 1.5 V LR6/AA.

  9. Electrical injury - Wikipedia

    en.wikipedia.org/wiki/Electrical_injury

    An electrical injury (electric injury) or electrical shock (electric shock) is damage sustained to the skin or internal organs on direct contact with an electric current. [ 2 ] [ 3 ] The injury depends on the density of the current , tissue resistance and duration of contact. [ 4 ]

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