Crossword clues for hydrometer
The Collaborative International Dictionary
Hydrometer \Hy*drom"e*ter\, n. [Hydro-, 1 + -meter: cf. F. hydrom[`e]tre.]
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(Physics) An instrument for determining the specific gravities of liquids, and thence the strength spirituous liquors, saline solutions, etc.
Note: It is usually made of glass with a graduated stem, and indicates the specific gravity of a liquid by the depth to which it sinks in it, the zero of the scale marking the depth to which it sinks in pure water. Extra weights are sometimes used to adapt the scale to liquids of different densities.
An instrument, variously constructed, used for measuring the velocity or discharge of water, as in rivers, from reservoirs, etc., and called by various specific names according to its construction or use, as tachometer, rheometer, hydrometer, pendulum, etc.; a current gauge.
Douglas Harper's Etymology Dictionary
Wiktionary
alt. An instrument that floats in a liquid and measures its specific gravity on a scale. n. An instrument that floats in a liquid and measures its specific gravity on a scale.
WordNet
n. a measuring instrument for determining the specific gravity of a liquid or solid [syn: gravimeter]
Wikipedia
A hydrometer is an instrument that measures the specific gravity ( relative density) of liquids—the ratio of the density of the liquid to the density of water.
A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to specific gravity. Hydrometers usually contain a scale inside the stem, so that the person using it can read specific gravity. A variety of scales exist for different contexts.
Hydrometers are calibrated for different uses, such as a lactometer for measuring the density (creaminess) of milk, a saccharometer for measuring the density of sugar in a liquid, or an alcoholometer for measuring higher levels of alcohol in spirits.
Usage examples of "hydrometer".
It was always beneficial, he felt, for an expedenced engineer to immerse himself in the plebeian from time to time, to work with a fluid-state hydrometer in- stead of giving orders.
By adding more urine to the vial, I finally got the hydrometer to bob up and down.
The temperature is taken, and the hydrometer is immersed in the fluid.
The mark on the hydrometer stem, level with the surface of the liquid, is read off.
Harry saw Bunsen burners, hydrometer jars, spiral tubes of glass, all leading to a metal cylinder that projected from a heavy wall bracket.
Sprinkling a greenish powder into a tall hydrometer jar, The Shadow filled it with water and poured the zircons into it.
Its closing was drowned by the fierce hisses that came from the hydrometer jars.
On top of the cabinet was a rack of test tubes, several beakers and a hydrometer jar.
Thrusting a stack of papers along the top of the cabinet, Harry deliberately knocked over the hydrometer jar, which he could barely see in the semidarkness.
They measure the percentage now with hydrometers, not gunpowder and fire.
Computerized temperature controllers and hydrometers, automated bottling systems, the works.
Time after time he tested it with hydrometers and narrow strips of litmus paper.
They measure the percentage now with hydrometers, not gunpowder and fire.