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“hygrometer”
hygrometer
1. A measuring instrument for measuring the relative humidity of the atmosphere.
2. Any of several instruments that measure atmospheric humidity.
2. Any of several instruments that measure atmospheric humidity.
The most common type of hygrometer consists of two, side-by-side mercury or electronic thermometers, one of which has a dry bulb, and one of which has a bulb wrapped with a wet cotton or linen wick.
As water evaporates from the wet bulb, it absorbs heat from the thermometer, driving down its temperature reading.
The difference in temperature between the two thermometers is then used to calculate the relative humidity.
Other hygrometers make use of the temperatures at which dew forms and disappears to calculate the relative humidity.
This entry is located in the following units:
hygro-, hygr- +
(page 2)
meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre
(page 19)
Word Entries containing the term:
“hygrometer”
absorption hygrometer
An apparatus used to measure atmospheric humidity, using a drying agent to absorb and then to weigh the amount of water vapor in a known quantity of air.
This entry is located in the following unit:
sorb-, sorpt- +
(page 3)
electric hygrometer
1. An electrical instrument that measures the humidity of the atmosphere.
2. A tool for indicating by electrical means the humidity of the ambient atmosphere.
2. A tool for indicating by electrical means the humidity of the ambient atmosphere.
It is usually based on the relation between the electric conductance of a film of hygroscopic material and its moisture content.
This entry is located in the following unit:
electro-, electr-, electri-
(page 10)