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Delta Faucet Company is a division owned by Masco, which was founded in Detroit in 1929 by Armenian immigrant Alex Manoogian. In 1952, an eager inventor brought Manoogian his latest invention, a one-handled faucet that mixed both hot and cold water with a ball-valve. Unfortunately it leaked, but Manoogian was intrigued by the idea of utilizing ...
Butler–Volmer equation. In electrochemistry, the Butler–Volmer equation (named after John Alfred Valentine Butler [ 1] and Max Volmer ), also known as Erdey-Grúz –Volmer equation, is one of the most fundamental relationships in electrochemical kinetics. It describes how the electrical current through an electrode depends on the voltage ...
Continuum mechanics. In nonideal fluid dynamics, the Hagen–Poiseuille equation, also known as the Hagen–Poiseuille law, Poiseuille law or Poiseuille equation, is a physical law that gives the pressure drop in an incompressible and Newtonian fluid in laminar flow flowing through a long cylindrical pipe of constant cross section.
A faucet aerator can be classified on the basis of its flow rate and the type of water stream (aerated, non-aerated, spray) it produces. In general, standard-sized aerators are available with female (M22x1) or male threading (M24x1). Bathtub spouts often have a bigger diameter with a male M28x1 thread. The United States uses different thread ...
Heat equation. Animated plot of the evolution of the temperature in a square metal plate as predicted by the heat equation. The height and redness indicate the temperature at each point. The initial state has a uniformly hot hoof-shaped region (red) surrounded by uniformly cold region (yellow). As time passes the heat diffuses into the cold region.
Darcy–Weisbach equation. In fluid dynamics, the Darcy–Weisbach equation is an empirical equation that relates the head loss, or pressure loss, due to friction along a given length of pipe to the average velocity of the fluid flow for an incompressible fluid. The equation is named after Henry Darcy and Julius Weisbach.
In mathematics, the Volterra integral equations are a special type of integral equations. [ 1] They are divided into two groups referred to as the first and the second kind. A linear Volterra equation of the first kind is. where f is a given function and x is an unknown function to be solved for. A linear Volterra equation of the second kind is.
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