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Manometer :: Manometer (n.) An instrument for measuring the tension or elastic force of gases, steam, etc., constructed usually on the principle of allowing the gas to exert its elastic force in raising a column of mercury in an open tube, or in compressing a portion of air or other gas in a closed tube with mercury or other liquid intervening, or in bending a metallic or other spring so as to set in motion an index; a pressure gauge. See Pressure, and Illust. of Air pump..

Elongation :: Elongation (n.) The angular distance of a planet from the sun; as, the elongation of Venus or Mercury..

Talaria :: Talaria (n. pl.) Small wings or winged shoes represented as fastened to the ankles, -- chiefly used as an attribute of Mercury..

Alloy :: Alloy (v. t.) Any combination or compound of metals fused together; a mixture of metals; for example, brass, which is an alloy of copper and zinc. But when mercury is one of the metals, the compound is called an amalgam..

Quicksilvering :: Quicksilvering (n.) The mercury and foil on the back of a looking-glass.

Hydrostatics :: Hydrostatics (n.) The branch of science which relates to the pressure and equilibrium of nonelastic fluids, as water, mercury, etc.; the principles of statics applied to water and other liquids..

Calomel :: Calomel (n.) Mild chloride of mercury, Hg2Cl2, a heavy, white or yellowish white substance, insoluble and tasteless, much used in medicine as a mercurial and purgative; mercurous chloride. It occurs native as the mineral horn quicksilver..

Ohm :: Ohm (n.) The standard unit in the measure of electrical resistance, being the resistance of a circuit in which a potential difference of one volt produces a current of one ampere. As defined by the International Electrical Congress in 1893, and by United States Statute, it is a resistance substantially equal to 109 units of resistance of the C.G.S. system of electro-magnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the tempera

Liquefacient :: Liquefacient (n.) An agent, as mercury, iodine, etc., which promotes the liquefying processes of the system, and increases the secretions..

Oleate :: Oleate (n.) A salt of oleic acid. Some oleates, as the oleate of mercury, are used in medicine by way of inunction..

Cathetometer :: Cathetometer (n.) An instrument for the accurate measurement of small differences of height; esp. of the differences in the height of the upper surfaces of two columns of mercury or other fluid, or of the same column at different times. It consists of a telescopic leveling apparatus (d), which slides up or down a perpendicular metallic standard very finely graduated (bb). The telescope is raised or depressed in order to sight the objects or surfaces, and the differences in vertical height are th

Fall :: Fall (v. t.) To Descend, either suddenly or gradually; particularly, to descend by the force of gravity; to drop; to sink; as, the apple falls; the tide falls; the mercury falls in the barometer..

Water Barometer :: Water barometer () A barometer in which the changes of atmospheric pressure are indicated by the motion of a column of water instead of mercury. It requires a column of water about thirty-three feet in height.

Mercury :: Mercury (n.) A Latin god of commerce and gain; -- treated by the poets as identical with the Greek Hermes, messenger of the gods, conductor of souls to the lower world, and god of eloquence..

Mercurial :: Mercurial (a.) Of or pertaining to, or containing, mercury; as, mercurial preparations, barometer. See Mercury, 2..

Mercury :: Mercury (n.) Sprightly or mercurial quality; spirit; mutability; fickleness.

Rise :: Rise (v.) To reach a higher level by increase of quantity or bulk; to swell; as, a river rises in its bed; the mercury rises in the thermometer..

Mercurial :: Mercurial (n.) A preparation containing mercury.

Crith :: Crith (n.) The unit for estimating the weight of a/riform substances; -- the weight of a liter of hydrogen at 0/ centigrade, and with a tension of 76 centimeters of mercury. It is 0.0896 of a gram, or 1.38274 grains..

Patio :: Patio (n.) A paved yard or floor where ores are cleaned and sorted, or where ore, salt, mercury, etc., are trampled by horses, to effect intermixture and amalgamation..

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