News tagged with humidity

Global warming's humidity could put lives in danger

(HealthDay)—You may have heard the expression: It's not the heat, it's the humidity. Researchers seem to agree, and are now warning that humidity is likely to increase the threat to human health from climate change-related ...

Dec 27, 2017
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Heat, humidity, and heart disease

It's no secret that high temperatures or extreme humidity can negatively impact one's physical health, particularly those afflicted with cardiovascular disease. Previous literature has even suggested that cardiovascular disease ...

Dec 11, 2017
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Be alert to the deadly danger of heatwaves

With Queensland and other parts of Australia experiencing unseasonal heatwave conditions, a QUT health expert has warned people to stay cool and well hydrated and check on family and friends, particularly infants, those who ...

Sep 28, 2017
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Athletic performance plummets without water

Scientists from the University of Stirling have discovered that dehydrated cricket players suffer impaired motor skills that significantly reduce their performance on the field.

Aug 03, 2016
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Humidity

Humidity is a term for the amount of water vapor in the air, and can refer to any one of several measurements of humidity. Formally, humid air is not "moist air" but a mixture of water vapor and other constituents of air, and humidity is defined in terms of the water content of this mixture, called the Absolute humidity. In everyday usage, it commonly refers to relative humidity, expressed as a percent in weather forecasts and on household humidistats; it is so called because it measures the current absolute humidity relative to the maximum. Specific humidity is a ratio of the water vapor content of the mixture to the total air content (on a mass basis). The water vapor content of the mixture can be measured either as mass per volume or as a partial pressure, depending on the usage.

In meteorology, humidity indicates the likelihood of precipitation, dew, or fog. High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.

This text uses material from Wikipedia, licensed under CC BY-SA

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