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  2. Manning formula - Wikipedia

    en.wikipedia.org/wiki/Manning_formula

    Units of n are often omitted, however n is not dimensionless, having dimension of T/L 1/3 and units of s/m 1/3. R h is the hydraulic radius (L; ft, m); S is the stream slope or hydraulic gradient, the linear hydraulic head loss loss (dimension of L/L, units of m/m or ft/ft); it is the same as the channel bed slope when the water depth is ...

  3. Effective medium approximations - Wikipedia

    en.wikipedia.org/wiki/Effective_medium...

    There are many different effective medium approximations, [5] each of them being more or less accurate in distinct conditions. Nevertheless, they all assume that the macroscopic system is homogeneous and, typical of all mean field theories, they fail to predict the properties of a multiphase medium close to the percolation threshold due to the absence of long-range correlations or critical ...

  4. Electrical conduit - Wikipedia

    en.wikipedia.org/wiki/Electrical_conduit

    EMT is available in trade sizes 1/2" through 4", and 10′ and 20′ lengths. Some manufacturers also produce EMT in a range of colors for easy system identification. Aluminum conduit, similar to galvanized steel conduit, is a rigid tube, generally used in commercial and industrial applications where a higher resistance to corrosion is needed.

  5. ITU model for indoor attenuation - Wikipedia

    en.wikipedia.org/wiki/ITU_Model_for_Indoor...

    The ITU indoor propagation model, also known as ITU model for indoor attenuation, is a radio propagation model that estimates the path loss inside a room or a closed area inside a building delimited by walls of any form. Suitable for appliances designed for indoor use, this model approximates the total path loss an indoor link may experience.

  6. Motion control - Wikipedia

    en.wikipedia.org/wiki/Motion_control

    Motion control systems are extensively used in a variety of fields for automation purposes, including precision engineering, micromanufacturing, biotechnology, and nanotechnology. [1] The main components involved typically include a motion controller , an energy amplifier, and one or more prime movers or actuators .

  7. Internal model (motor control) - Wikipedia

    en.wikipedia.org/wiki/Internal_model_(motor_control)

    The internal model principle was first articulated in 1976 by B. A. Francis and W. M. Wonham [1] as an explicit formulation of the Conant and Ashby good regulator theorem. [2] It stands in contrast to classical control, in that the classical feedback loop fails to explicitly model the controlled system (although the classical controller may ...

  8. INRS-EMT - Wikipedia

    en.wikipedia.org/wiki/INRS-EMT

    The Énergie, Matériaux et Télécommunications (EMT, Energy, Materials and Telecommunications) is part of the INRS research university in Quebec. The center has two separate locations: Montreal (Place Bonaventure) and Varennes. The center focuses its research activities in domains such as telecommunication networks, wireless communications ...

  9. Tesla valve - Wikipedia

    en.wikipedia.org/wiki/Tesla_valve

    A Tesla valve, called a valvular conduit by its inventor, is a fixed-geometry passive check valve. It allows a fluid to flow preferentially in one direction, without moving parts. The device is named after Nikola Tesla , who was awarded U.S. patent 1,329,559 in 1920 for its invention.