QUICK a.
grass. -- Quick match. See under Match. -- Quick vein (Mining), a vein of ore which is productive, not barren. -- Quick vinegar, vinegar made by allowing a weak solution of alcohol to trickle slowly over shavings or other porous material. -- Quick water, quicksilver water. -- Quick with child, pregnant with a liv…
RADIUM n.
ration of the atom. This breaking up occurs in at least seven stages; the successive main products have been studied and are called radium emanation or exradio, radium A, radium B, radium C, etc. (The emanation is a heavy gas, the later products are solids.) These products are regarded as unstable elements, each with a…
REACTION n.
, or electricity, resulting in a chemical change in one or more of these agents, with the production of new compounds or the manifestation of distinctive characters. See Blowpipe reaction, Flame reaction, under Blowpipe, and Flame.