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.
Key differences between affordable wicker and expensive wicker: 1  The Target rocker is machine-woven with weather-resistant resin, but is on a rattan frame. The rattan frame is likely to deteriorate long before the resin weaving. 2  The Gloster rocker features a tight hand woven resin. The frame is welded, powder coated aluminum.