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  2. Scale model - Wikipedia

    en.wikipedia.org/wiki/Scale_model

    This is further complicated by the fact some scales use several different gauges; for example, HO scale uses 16.5 mm as the standard gauge of 4 ft 8 + 1 ⁄ 2 in (1,435 mm), 12 mm to represent 1,000 mm (3 ft 3 + 3 ⁄ 8 in) gauge (HOm), and 3 ft 6 in (1,067 mm) (HOn3-1/2), and 9 mm to represent a prototype gauge of 2 ft (610 mm).

  3. Electricity - Wikipedia

    en.wikipedia.org/wiki/Electricity

    Electric utilities measure power using electricity meters, which keep a running total of the electric energy delivered to a customer. Unlike fossil fuels , electricity is a low entropy form of energy and can be converted into motion or many other forms of energy with high efficiency.

  4. List of electrical phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_electrical_phenomena

    Electric shock — Physiological reaction of a biological organism to the passage of electric current through its body. Ferranti effect — A rise in the amplitude of the AC voltage at the receiving end of a transmission line , compared with the sending-end voltage, due to the capacitance between the conductors, when the receiving end is open ...

  5. List of films featuring miniature people - Wikipedia

    en.wikipedia.org/wiki/List_of_films_featuring...

    The US comedy film, set in suburbia, features kids who accidentally shrink themselves with an inventor's experimental shrink ray to be a quarter-inch tall and must survive the indoors and the outdoors on a different scale. [15] [11] [4] [17] [3] [9] [12] [2] [8] [1] [5] Honey, We Shrunk Ourselves: 1997

  6. Length contraction - Wikipedia

    en.wikipedia.org/wiki/Length_contraction

    Using this method, the definition of simultaneity is crucial for measuring the length of moving objects. Another method is to use a clock indicating its proper time T 0 {\displaystyle T_{0}} , which is traveling from one endpoint of the rod to the other in time T {\displaystyle T} as measured by clocks in the rod's rest frame.

  7. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    The electric field sends the electron to the p-type material, and the hole to the n-type material. If an external current path is provided, electrical energy will be available to do work. The electron flow provides the current, and the cell's electric field creates the voltage. With both current and voltage the silicon cell has power.

  8. Energy transformation - Wikipedia

    en.wikipedia.org/wiki/Energy_transformation

    Fire is an example of energy transformation Energy transformation using Energy Systems Language. Energy transformation, also known as energy conversion, is the process of changing energy from one form to another. [1] In physics, energy is a quantity that provides the capacity to perform work (e.g. lifting an object) or provides heat.

  9. Electrical device - Wikipedia

    en.wikipedia.org/wiki/Electrical_device

    To better differentiate between both classes, electric devices that emphasize physical work are also called electromechanical. Mechatronics accentuates the intersection of both fields. Together, electronic and electric devices, their development, maintenance, and power supply comprise the subject of electrical engineering.

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