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  2. Code of Points (gymnastics) - Wikipedia

    en.wikipedia.org/wiki/Code_of_Points_(gymnastics)

    The Code of Points is a rulebook that defines the scoring system for each level of competition in gymnastics. There is not a universal international Code of Points , and every oversight organization — such as the FIG [ 1 ] ( Fédération Internationale de Gymnastique ), NCAA Gymnastics, and most national gymnastics federations — designs and ...

  3. ROYGBIV - Wikipedia

    en.wikipedia.org/wiki/ROYGBIV

    Isaac Newton's color sequence (red, orange, yellow, green, blue, indigo, violet) is kept alive today by several popular mnemonics.One is simply the nonsense word roygbiv, which is an acronym for the seven colors. [5]

  4. Voltage-controlled resistor - Wikipedia

    en.wikipedia.org/wiki/Voltage-controlled_resistor

    A fundamental limitation of voltage-controlled resistors is that input signal must be kept below the linearization voltage (approximately the point when the JFET enters saturation). If the linearization voltage is exceeded, the voltage control resistor value will change both with the level of the input voltage signal and the gate-to-source voltage.

  5. Field-effect transistor - Wikipedia

    en.wikipedia.org/wiki/Field-effect_transistor

    Julius Edgar Lilienfeld, who proposed the concept of a field-effect transistor in 1925.. The concept of a field-effect transistor (FET) was first patented by the Austro-Hungarian born physicist Julius Edgar Lilienfeld in 1925 [1] and by Oskar Heil in 1934, but they were unable to build a working practical semiconducting device based on the concept.

  6. Three-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Three-phase_electric_power

    Three-phase transformer with four-wire output for 208Y/120 volt service: one wire for neutral, others for A, B and C phases. Three-phase electric power (abbreviated 3ϕ [1]) is a common type of alternating current (AC) used in electricity generation, transmission, and distribution. [2]

  7. Force-sensing resistor - Wikipedia

    en.wikipedia.org/wiki/Force-Sensing_Resistor

    The technology of force-sensing resistors was invented and patented in 1977 by Franklin Eventoff. In 1985 Eventoff founded Interlink Electronics, [2] a company based on his force-sensing-resistor (FSR). In 1987, Eventoff received the prestigious International IR 100 award for developing the FSR.

  8. Bridge circuit - Wikipedia

    en.wikipedia.org/wiki/Bridge_circuit

    It is constructed from four resistors, two of known values R 1 and R 3 (see diagram), one whose resistance is to be determined R x, and one which is variable and calibrated R 2. Two opposite vertices are connected to a source of electric current, such as a battery, and a galvanometer is connected across the other two vertices. The variable ...

  9. Electrical resistance and conductance - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistance_and...

    It is the derivative of the voltage with respect to the current; the slope of the current–voltage curve at a point =. If the current–voltage curve is non- monotonic (with peaks and troughs), the curve has a negative slope in some regions—so in these regions the device has negative differential resistance .