Crossword clues for hygrometer
The Collaborative International Dictionary
Hygrometer \Hy*grom"e*ter\, n. [Gr. ? wet, moist + -meter: cf. F. hygrom[`e]tre.] (Physics) An instrument for measuring the degree of moisture of the atmosphere.
Daniell's hygrometer, a form of hygrometer consisting of a bent glass tube terminating in two bulbs, the one covered with muslin, the other of black glass, and containing ether and a thermometer. Ether being poured on the muslin, the black ball, cooled by the evaporation of the ether within, is soon covered with dew; at this moment, the inclosed thermometer gives the dew-point, and this, compared with the reading of one in the air, determines the humidity.
Douglas Harper's Etymology Dictionary
1660s, from French hygromètre, from Greek hygro- (see hygro-) + -meter. Related: Hygrometry; hygrometric.
Wiktionary
n. (context meteorology English) An instrument that measures the humidity of the air or other gases, especially the relative humidity.
WordNet
n. measuring instrument for measuring the relative humidity of the atmosphere
Wikipedia
A hygrometer is an instrument used for measuring the moisture content in the atmosphere. Humidity measurement instruments usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed. By calibration and calculation, these measured quantities can lead to a measurement of humidity. Modern electronic devices use temperature of condensation (the dew point), or changes in electrical capacitance or resistance to measure humidity differences. The first crude hygrometer was invented by Leonardo da Vinci in 1480 and a more modern version was created by polymath Johann Heinrich Lambert in 1755.
Usage examples of "hygrometer".
Jack, looking up from his precious hygrometer, cyanograph and the rest, grasped the situation at once.
In the instrument-screen we had a thermograph, hygrometer, and thermometers.
A thermometer, a hygrometer, and the other thermograph were placed in a screen on high posts, and with louvred sides, which stood at a distance of fifteen yards to the south-west of the house.
The light alloy panel came free to reveal a large compartment and give access for adjustments to the barometer, thermometer, hygrometer and the motors.
The measurement tools of meteorologythe barometer, thermometer, hygrometer, and anemometercould produce some Kelvinian numbers of current ambient surface conditions.
He would also wear a small pouch containing instruments for scientific measurement, including a digital thermometer, a hygrometer for measuring humidity, and a manometer for measuring atmospheric pressure.
Two wet-and-dry bulb hygrometers are used to determine the moisture in the air.
Vickery marched out to the scattered experimental stations, nets of thermocouples stretched from shadow to sunlight, anemometers, hygrometers, and a varied array of automated atmospheric analysis stations.
Sitting there he heard a crash and a confused tumbling, and when he came out he found that Stephen had fallen off the chair from which he was trying to catch a spider under the skylight and had not only flung sea-water all over his records but had broken an improbable number of instruments - hygrometers, seven different kinds of thermometer, Crompton's device for measuring specific gravity: practically everything made of glass.