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.
Velour is a fabric which is somewhat similar to velvet. It has thick and soft nap which gives it a luxurious touch. Velour is a knit which changes the properties of this fabric. Velour can be used as upholstery, clothing, cloth diapers and pillowcases.