In general, the discriminant is an algebraic expression that gives. information about the roots of a polynomial. In the case of a quadratic equation the discriminant is the part of. the quadratic equation that is under the radical sign.
How to Select Dampers and Louvers. Dampers and louvers are used to control the flow of air in a process system or enclosed area. Dampers are usually motorized or manually-adjustable for flow control. Louvers are often fixed for a constant flow rate.
A damper is a device that deadens, restrains, or depresses. Damper may refer to: 1  Dashpot, a type of hydraulic or mechanical damper, 2  Shock absorber (British or technical use: damper), a mechanical device designed to dissipate kinetic energy. 3  In electronics, a kind of diode, intended to absorb energy peaks, normally generated by inductive circuitry.