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.
Fasteners are the smallest part of a structure. Bolts and screws are the most commonly used as fasteners for joining of materials. In this article, we will discuss the differences between bolt and screw. Difference Between Bolt And Screw: 1. Bolt has an external thread at the lower end.