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Why does your throat feel very dry when you sleep in an air-conditioned room?
Because the process of refrigerating ("conditioning") air not only reduces its temperature, but also reduces its relative humidity, so the air in the bedroom is relatively dry air, and your pipes dry out from breathing it all night.
Why is it more comfortable to exercise on a day when the relative humidity?
I assume you meant to say "is low" at the end of your question. In order to answer this. I need to explain a couple things. As humans, we sweat to cool down. The way this works, is as the sweat evaporates off our skin, it draws heat away from the body. In high humidity, evaporation is slower, and therefore we cool down more slowly. (in warm temperatures) So in low humidity, our bodies are better able to regulate excess heat, and keep us cooler. Also, humid air is harder for our lungs to process oxygen out of, so we get less oxygen with each breath in higher humidity.
How does the relative density bottle works?
A small bottle or flask used to measure the specific gravities of liquids; the bottle is weighed when it is filled with the liquid whose specific gravity is to be determined, when filled with a reference liquid, and when empty. Also known as density bottle; relative-density bottle.
Which microscope part regulates the amount of light that reaches the objective lens?
The diaphragm regulates the amount of light that reaches the objective lens. It is also called the iris.
What is the loudness of sound also known as?
The loudness of sound is also known as volume.
Relationship between evaporation and relative humidity?
The higher the relative humidity is the lower rate of evaporation.
Does transpiration effect dew on grass?
Absolutely. Air which is close to the ground cools overnight. While the air is cooling, the relative humidity is increasing until it reaches the dew point and water is released. Transpiration can also cause the dew point to be reached by increasing the relative humidity. This is why there is much more dew on the grass than on pavement.
Why is temperature countable but humidity is not?
The word humidity does have a plural, humidities, but the state of "being humid" itself is uncountable. What we actually measure as humidity is the relative humidity, comparing it to the maximum possible at that pressure and temperature. Referring to these measurements as "relative humidities" would not be grammatically incorrect, but you could also use the singular just as well. ("We're going to compare the relative humidity in Texas and Oklahoma.")
What tools do you use to measure precipitation and humidity?
A small inexpensive instrument for measuring humidity is called a Hygrometer (sometimes they are also called relative humidity indicator or humidity sensor). These instruments measure humidity.
The term dew point means?
This is the temperature at which small spheres of dew will form on a smooth surface. As such it is a measure of relative humidity. It is also used as a measure of the goodness of desiccant materials such as P2O5, and CaSO4. i.e. the lowest relative humidity to which this material will dehydrate.
Do water puddles evaporate faster on days when the humidity is high or low?
Low, this is because the relative humidity is also lower. The relative humidity is how much water vapor is in the aircompared to how much it can hold, if it is lower, it can hols more so wet things dry faster.
How can relative humidity increase diffusion rate?
Relative humidity increases when the amount of moisture air can hold increases. The increase can be caused by the introduction of more moist air, OR a temperature drop of the air/moisture mixture without a loss of moisture. Colder air will hold less moisture than warm air; as the temperature goes down the amount of moisture relative to what the air can hold increases.
Does steam make humidity rise or lower?
In general, steam is water so you're adding water to the air and raising the humidity. The small caveat is that steam is also going to heat the air, so it can hold more moisture. By adding moisture you increase the numerator of the relative humidity term, and by raising the heat you increase the denominator. In the end, the moisture would win and the relative humidity would increase.
How do climates vary base on elevation?
The greater the elevation, the cooler the climate will tend to be. Also relative humidity tends to drop as elevation increases.
How much relative humidity would decrease when temperature rises?
Relative humidity is a ratio between the partial pressure of water vapor and the saturation pressure of water vapor at the current temperature and pressure. If the temperature and pressure change, then the relative humidity will change also. You are correct that higher temperatures allow the atmosphere to hold more water. That means that the saturation pressure of water vapor has increased while the current vapor pressure has remained the same, causing the relative humidity to drop. We think of humidity as how hot and sticky it is outside. The closer the water vapor pressure is to its saturation point, the more hot and sticky we feel. We associate humidity with heat since that is when we are uncomfortable, but rain is caused by the relative humidity rising to 100% because the humid air cooled to the point that the saturation pressure dipped below the current vapor pressure (or other pressure changes, or a combination of both). You can learn more at the link below. I hope this helps.
What unit of measurement measures humidity?
Water vapor in the air is absolute humidity. The ratio of the absolute humidity to the maximum absolute humidity for that temperature and pressure is called the "relative humidity." Absolute humidity is very frequently expressed in terms of grains per pound of air, ppm, or vapour pressure. Relative humidity is usually expressed as a percent.Relative humidity, expressed as a percentage from 0% to 100%, is the amount of moisture in air divided by the total possible amount of moisture in air. Unfortunately, the total possible amount changes when the temperature changes, so the relative humidity can change without adding or removing any water.Another measure is dew point, which is the temperature at which water would condense. It doesn't change with temperature.The lowest measured relative humidity in Phoenix, AZ, USA, is 2%--pretty dry. Sometimes the dew point is below 0 degrees, also pretty dry. (Celsius or Fahrenheit? Both!)
Why does relative humidity increase at night?
because land heats up and cools down very fast so at night when the sun is not there the land starts to cool down quickly and the excess of heat is sent back by long wave radiation
