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What does 25 percent realtive humidty in the air mean?
It means that the air at the current temperature has 25% of the maximum moisture available at that temperature before becoming saturated. Relative hunmidity is relative to the amount of moisture the air can hold at temperature. It is relative because at higher temperature the air can hold more moisture. So at say 90F and 25% relative humidity there is much more moisture than at 70F and 25% relative humidity.
What does it mean when humidity is 100 percent?
This is called relative humidity. It is the ratio between the actual humidity, and the humidity for saturated air - that is, the maximum amount of water air can hold. This saturation point is dependent on temperature.
If the air temperature is 75 degrees Fahrenheit what is the temperature on the Kelvin scale?
297 Kelvins
Why is the term a cubic meter of air unsatisfactory?
Because it doesn't say neither the temperature, the pressure or the humidity of the air. You need to know both the temperature, the pressure and the humidity of the air to say anything about the mass of one cubic meter of air.
How long does it take for cold water to freeze?
It all depends on the temperature of the air that it is in contact with, the air has to be at least 0 degrees Celsius so you cannot work out how quickly it will freeze without knowing the air temperature ;)
Is there a minimum temperature people can work in?
The minimum temperature in which people can work depends on how warmly dressed they are and what the humidity and air movement conditions are.
What is insolation temperature Lag?
Insolation refers to the amount of solar radiation received on a particular surface. Insolation temperature lag refers to the delay between the peak solar radiation and the peak temperature on a surface, as heat absorption and release processes take time to reach equilibrium. This lag can vary depending on factors like the material of the surface and its thermal properties.
Is air saturated when the dew point temperature and the air temperature coincide?
Yes, when the dew point temperature and the air temperature coincide, the air is saturated. This is because the air has reached its maximum humidity at that temperature, leading to condensation or dew forming.
What are the kinds of thermometer used to measure air temperature?
The instrument usually used to measure air temperature is the maximum minimum thermometer. It consists of a U shaped tube with bulbs at each end and mercury at the bottom. Air heats or cools the bulbs causing the air inside to expand or contract, therefore pushing or pulling the mercury upwards or downwards.
What is the temperature at which air reaches saturation?
The temperature at which air reaches saturation is called the dew point temperature. At this temperature, the air is holding the maximum amount of water vapor it can hold at that specific temperature, leading to condensation or saturation.
The rating T130 on a transformers label?
I think this refers to the continuous temperature rating, which is the maximum rated winding temperature allowed for a maximum ambient air temperature of 40deg C.
What color has the maximum and minimum speed in air?
In air, red has the longest wavelength and therefore the lowest frequency, corresponding to the minimum speed. Violet has the shortest wavelength and highest frequency, corresponding to the maximum speed.
What instrument measures changes in temperature?
Temperatures are measured by instruments called thermometers.The instrument usually used to measure air temperature is the maximum-minimum thermometer. It consists of a U shaped tube with bulbs at each end and mercury at the bottom. Air heats or cools the bulbs causing the air inside to expand or contract, therefore pushing or pulling the mercury upwards or downwards.There are 3 types of thermometer: minimum thermometer, maximum thermometer,and the "Six's thermometer" -- these record the temperatures over a period of time.it says in my book that a thermometer measures air temperature
What is the vapor present in the air at a given temperature compared to the maximum amount that the air could hold at that temperature is called?
In the context of water vapour, it is "relative humidity".
What is the amount of water vapor the air IS holding compared to the amount of water vapor that the air CAN hold at that temperature?
Relative humidity expresses the amount of water vapor present in the air as a percentage of the maximum amount of water vapor the air can hold at that temperature. For example, if the relative humidity is 50%, it means the air is holding half of the maximum water vapor it can hold at that temperature.
Air that holds the maximum amount of water at a given temperature is said to be what?
Relative Humidity.
What three things needed to form dew?
High air humidity, low temperature and absence of sunshine during night with minimum air velocity are needed to form dew. These things are very common during autumn and spring seasons causing maximum dew formation.
