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i need to know how a hygrometer works

2006-10-20 10:10:18 · 2 answers · asked by kay17gurl 1 in Science & Mathematics Weather

2 answers

Hygrometer

Any instrument for measuring the humidity, or water vapour content, of a gas (usually air). A wet and dry bulb hygrometer consists of two vertical thermometers, with one of the bulbs covered in absorbent cloth dipped into water. As the water evaporates, the bulb cools, producing a temperature difference between the two thermometers. The amount of evaporation, and hence cooling of the wet bulb, depends on the relative humidity of the air.

Other hygrometers work on the basis of a length of natural fibre, such as hair or a fine strand of gut, changing with variations in humidity. In a dew-point hygrometer, a polished metal mirror gradually cools until a fine mist of water (dew) forms on it. This gives a measure of the dew point, from which the air's relative humidity can be calculated.


Learn how to make your own Hygrometer at this site

http://www.apluschilddev.com/headstart/services/projects/a_home_made_hygrometer.htm

2006-10-20 10:32:29 · answer #1 · answered by Anonymous · 0 1

A hygrometer measures the moisture content of a gas. One kind is called a sling psychrometer, and consists of two thermometers mounted on a board that pivots from a handle. The user swings the board around, getting a lot of air to pass over the two themometers, one of which has a bulb that is kept wet with a water-soaked wick. This bulb will be cooler than the other one because of evaporation of the water. A chart is then consulted to translate the two temperatures into relative humidity. See the ref.

2006-10-20 10:34:53 · answer #2 · answered by kirchwey 7 · 2 0

Scientists often use to describe the relative humidity in the air how much water vapor. Simply put, that is, imagine the air
Regents Shun electronic hygrometer KXS823D icon
Regents Shun electronic hygrometer KXS823D icon
Is a towel. If you spilled a glass of water, you can use a towel to absorb water. But in fact towel can actually absorb more water than a cup. Perhaps he can absorb five to ten cups of water. Part of the water and some amount of water vapor in the water vapor in the air is to have, and therefore the relative humidity is a percentage. When the relative humidity of one hundred percent, the air is saturated. Like a wet towel to do the same, the air can no longer take water. When the relative humidity of one hundred percent and the air is saturated, evaporation and deposition in the state of equilibrium. Evaporation increases the number of instructions to reach equilibrium again as the water precipitates.
Called for water vapor in the air humidity. Because water vapor molecules so they can not be seen in the small and Humidity creative people have developed methods to measure the amount of water vapor

2014-09-03 19:41:36 · answer #3 · answered by Anonymous · 0 0

What Is A Hygrometer

2016-09-29 00:51:38 · answer #4 · answered by ? 4 · 0 0

Negitive, and positive

2016-03-18 22:16:18 · answer #5 · answered by Anonymous · 0 0

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