specific humidity definition
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- In the sauna-like conditions of high temperature and humidity, the mass of water vapor in the may actually exceed the mass of dry air as is depicted by the humidity ratio. However, since specific humidity is the ratio of the mass of water to the mass of the moist air sample, it can never exceed 1.0. By Definition:
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Relative humidity Please help improve it by rewriting it in an encyclopedic style. (September 2012) (Learn how and when to remove this template message) Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest. It requires less water vapour to attain high relative humidity at low temperatures; more water vapour is required to attain high relative humidity in warm or hot air.
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specific heat Medical Definition of specific heat. 1: the ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree. 2: the heat in calories required to raise the temperature of one gram of a substance one degree Celsius.
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- Specific gravity definition, the ratio of the density of any substance to the density of some other substance taken as standard, water being the standard for liquids and solids, and hydrogen or air being the standard for gases.
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specific viscosity specific viscosity. noun. 1. (physics) a measure of the resistance to flow of a fluid, expressed as the ratio of the absolute viscosity of the fluid to that of a reference fluid (usually water in the case of liquids) Discover our greatest slideshows.
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- 5 ATMO 1300 Absolute Humidity • Absolute Humidity – The density of water vapor (mass of water vapor in a volume of air).• Dependencies: Volume of the air• Not widely used. ATMO 1300 Specific Humidity • Specific Humidity-The mass of water vapor per unit mass of air. • Dependencies: Atmospheric pressure• Units: grams per kilogram (g/kg)• Widely used – q=specific humidity, m v =mass of water vapor, m d =mass of dry air(v d)v vm mmm q m= = +.
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specific gravity specific gravity. n. (General Physics) the ratio of the density of a substance to that of water. See relative density. specif′ic grav′ity. n. the ratio of the density of any substance to the density of a standard substance, water being the standard for liquids and solids.
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What Is Humidity And How Does It Affect Life On Earth? Relative humidity refers to the air-water mixture and is expressed as the ratio of the partial pressure of the water vapor in the mixture to the equilibrium vapor pressure of water at a specific temperature over a flat surface of pure water.
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What Is Humidity? Relative humidity is the ratio of the current absolute humidity to the highest possible absolute humidity, which will depend upon the current air temperature. Relative humidity is the term weather forecasters use most often. A relative humidity of 100% means that the air can't hold any more water vapor.
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Relative humidity The relative humidity of an air-water mixture is defined as the ratio of the partial pressure of water vapor in the mixture to the equilibrium vapor pressure of water at a given temperature:Relative humidity is normally expressed as a percentage; a higher percentage means that the air-water mixture is more humid.y comparison, a relative humidity between 40% and 60% is considered healthy and comfortable in comfort-controlled environments (ASHRAE Standard 55 - see thermal comfort). Water vapor is a lighter gas than other gaseous components of air at the same temperature, so humid air will tend to rise by natural convection.
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RELATIVE HUMIDITY 1. the ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature; expressed as a percentage. Familiarity information: RELATIVE HUMIDITY used as a noun is very rare.
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Psychrometrics 1 Relative humidity (RH) is the ratio of the mole fraction of water vapor to the mole fraction of saturated moist air at the same temperature and pressure. 2  RH is dimensionless, and is usually expressed as a percentage.pecific humidity is defined as the proportion of the mass of water vapor per unit mass of the moist air sample (dry air plus the water vapor); it is closely related to humidity ratio and always lower in value.
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- Relative humidity is a percentage of water vapour per area at a specific temperature. Relative humidity is calculated at all times of the year, but the humidex is usually only given in the warmer months from May to September. Relative humidity can be calculated using various methods and instruments.
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What is Relative Humidity? Relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold. For instance, if the relativ Home
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General Chemistry/Print version specific gravity definition. The mass of a substance, given as a multiple of the mass of the same volume of a standard substance (usually water). The specific gravity of aluminum is 2.70; hence, a cubic foot of aluminum weighs 2.70 times as much as a cubic foot of water. Word of the Day.
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The Humidity Deception Relative humidity is the ratio of water vapor in the air compared to the amount of water vapor the same air at the same temperature holds when it is saturated. Hence if the amount of water vapor in the air remains constant and the temperature falls the relative humidity rises.
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Air Masses, Temperature, and Humidity The amount of water vapor that the air can hold at a certain temperature, relative to the capacity of the air for the water vapor. The capacity of the air increases as the temperature gets hotter. The relative humidity is written as a percent.
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What is the difference between humidity and relative humidity? Humidity refers to the amount of water vapor in the air. The more water vapor in the air, the more humid the weather becomes.
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- Relative Humidity. A dimensionless ratio, expressed in percent, of the amount of atmospheric moisture present relative to the amount that would be present if the air were saturated. Since the latter amount is dependent on temperature, relative humidity is a function of both moisture content and temperature. As such, relative humidity by itself does not directly indicate the actual amount of atmospheric moisture present. See dew point.
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Relative Relative Humidity Relative Relative Humidity. RELATIVE HUMIDITY is a measure of the amount of water in the air. Relative Humidity is measured on a relative scale rather than a linear scale (like measurements of temperature and distance) for example. Although this may make Relative Humidity a little harder to understand, its role in plant health is extremely important.
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- (1) Humidity is a measure of the amount of water vapor in the air. One way to represent humidity is the mixing ratio, defined as the mass of water vapor mixed with each unit mass of air. We usually express mixing ratio as the number of grams of water vapor in each kilogram of air.
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Converting Specific Humidity to Relative Humidity Relative humidity (abbreviated RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at the same temperature. Relative humidity depends on temperature and the pressure of the system of interest.
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Definitions &Translations Humidity. Humidity is the amount of water vapor in the air. Water vapor is the gas phase of water and is invisible. Humidity indicates the likelihood of precipitation, dew, or fog. Higher humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin.
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Difference Between Humidity and Relative Humidity Humidity may be absolute or relative. Absolute humidity is the amount of water vapor in a unit volume of air which is expressed in kilograms per cubic meter. It does not change according to the temperature of the air.When there is a high amount of water vapor in the air, absolute humidity will also be high.ummary: 1.Humidity is the amount of water vapor in the atmosphere while relative humidity is one type of humidity. 2.Humidity is the water content of the mixture of water vapor and other elements found in the air while relative humidity is the percentage of water vapor in the air at a given temperature.
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- Relative Humidity – The amount of water vapor in a given volume of air divided by the amount of air in that volume is called humidity. It depends on the temperature as higher temperature can increase the rate of evaporation and thus the amount of water vapor in the air.
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What is relative humidity and how does it affect how I feel outside? Humidity can be measured in several ways, but relative humidity is the most common. In order to understand relative humidity, it is helpful to first understand absolute humidity. Absolute humidity is the mass of water vapor divided by the mass of dry air in a volume of air at a given temperature. The hotter the air is, the more water it can contain.