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.
Craftsman 10 in. Buffer/Polisher. This Craftsman 10 in. Buffer/Polisher has a 1.1 AMP permanent magnet motor to help you achieve professional-level car care results. The buffer/polisher has a counter-weight system to mimic a hand-polishing motion and reduce vibration fatigue.