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.
A sieve can be a strainer. It usually has a handle & wire mesh. Sieving is when you pass flour & other things through the strainer to add air or get lumps out. Therefore, a sieve & strainer can be the same item but used for different purposes. Approximately. However many times a sieve is used to strain something and/or to pulverize and strain something. For instance in cooking, a sieve has many very fine and small holes.