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.
1 a damper which closes off an air duct automatically in the event of fire so as to restrict the passage of fire and smoke. ( historical, archaic, mining) a mine worker who detects and clears a mineshaft of firedamp by intentionally burning or blowing it up.