A pointer star in the constellation Ursa Major, with an apparent magnitude of 2.4. See more at Dubhe.
noun 1. a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.
noun, Chemistry. 1. . noun, Chemistry. 1. a white, crystalline, water-soluble, strongly acrid, highly poisonous solid, HgCl 2 , prepared by sublimation of chlorine with mercury, and used chiefly as an antiseptic. noun 1. a white poisonous soluble crystalline substance used as a pesticide, antiseptic, and preservative for wood. Formula: HgCl2 Systematic name mercury(II) chloride […]
- Mercury chloride
noun 1. See mercurous chloride, mercuric chloride
- Mercury delay line
storage, history An archaic first-in first-out fixed time period data storage device using acoustic transducers to transmit data as waves in a trough or tube of mercury. EDSAC (Cambridge) and UNIVAC I used delay lines. (2002-06-12)