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Density of air - Wikipedia, the free encyclopedia
The density of air , ρ (Greek: rho) (air density), is the mass per unit volume of Earth's atmosphere, and is a useful value in aeronautics and other sciences. Air density decreases with increasing a...
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Humidity - Wikipedia, the free encyclopedia
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USATODAY.com Latest News ... Compared to the differences made by temperature and air pressure, humidity has a small effect on the air's density. But, humid air is lighter than dry air at the same temperature and pressure.
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Compared to the differences made by temperature and air pressure, humidity has a small effect on the air's density. But, humid air is lighter than dry air at the same temperature and pressure. (Related item: Understanding air density...
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Humidity and air density Most people who haven't studied physics or chemistry find it hard to believe that humid air is lighter, or less dense, than dry air. How many times have you heard someone tell you to add more gear on a hot humid day because it is harder to push the kart through the hot humid air.
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The density of humid air may be calculated as a mixture of ideal gases. In this case, the partial pressure of water vapor is known as the vapor pressure. Using this method, error in the density calculation is less than 0.2% in the range of −10 °C to 50 °C. The density of humid air is found by:
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An isochoric apparatus and a densimeter with a magnetic suspension coupling were used to measure the density of dry air at (10, 30, 75, and 120) kgm-3. The results are compared with the Zittau database (Kretzschmar, H.-J., et al. ... Property Data Base for Humid Air, version 2.0; 2004) and the work of Lemmon et al. (Lemmon, E.
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