|says that for every action there is an equal and opposite reaction|
|law saying if there is no external force acting on a system the total momentum remains constant|
the impurities of silver separated from the one in the process of melting (Prov. 25:4; 26:23; Ps. 119:119). It is also used to denote the base metal itself, probably before it is smelted, in Isa. 1:22, 25.