QUADRANT n.
etc., consisting commonly of a graduated arc of 90º, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction. Gunner's quadrant, an instrument consisting of a graduated limb, with a plumb line or spirit level, and a…
QUANTUM n.
ed] (Law), a count in an action grounded on a promise that the defendant would pay to the plaintiff for his service as much as he should deserve. -- Quantum sufficit (, or Quantum suff. Etym: [L., as much suffices] (Med.), a sufficient quantity. -- Quantum valebat ( Etym: [L., as much at it was worth] (Law), a count…
RADIUM n.
external conditions.The radioactivity of radium is therefore an atomic property, and is explained as result from a disintegration 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. (…