What is the mist cooling?
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Mist cooling is simply introducing an atomized spray of water into an airstream to cool the air.   As the water droplets vaporize and dissolve in the air, they remove heat energy from the air, leaving the air slightly cooler.\n\nThese systems are most effective in dry heat climates, where the relative humidity is low.  The water can evaporate much more quickly, removing more heat.\n\nThe lowest temperature that can be conceivably reached (provided that the system were 100% efficient) is the dewpoint temperature, also known as the wet-bulb temperature.  If the air were cooled to this temperature, its relative humidity would be 100% and it would be at maximum moisture saturation.  So, in most cases, these coolers can only reduce temperatures to 60 or 70 degrees under normal conditions, unless you're in a desert or other arid region.\n\nMost mist coolers are smaller, portable systems that use a common fan with several nozzles in front of it that produce a very fine mist spray of water.\n\nSmaller systems are also available for cooling milling work in tooling manufacturing.  These systems typically have an additive in the water supply to reduce the oxidation effects of the water.
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The most plausible answer is 3.\n\n- As air expands, it does cool.\n- Cooler air is able to hold less water, so is saturated far quicker.\n- When air is saturated, water droplets will condense out of the air on many available surfaces, including on lenses.
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Evaporative humidifier. A fan blows air through a moistened filter or wick, increasing the humidity in the air.
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Drops of liquid that form on your skin when you're hot. It's a synonim of Sweat and Perspiration
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Go walk around in some fog. Fog is a cloud. Basically you feel moisture.
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The cooling system,works like a cars ,except there is no radiator. The water is pulled from the lake or ocean into the water pump,flows through all the water ports in the block and head,then go out . it is kind of a cycle ,in and out.
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Condensation. As the air moves over the wings of the plane, the moisture in the air collects on the wing. It is pulled to the wingtips where it then is blown off, and condenses into small lines of "cloud"
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You mean the dew point, right? That is the temperature at which the air will become saturated with water and dew will begin to form as the air cools. As air cools below the dew point you can get fog, frost, clouds, rain, or snow.
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get a cooling pad, it's a base you put your laptop on with fans in it that keeps it cool.  You can get them anywhere, and they're relatively decent priced.  I got one at the local computer store for $40
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A desert cooler takes advantage of very low relative humidity to acheive its cooling properties.   Rather than relying upon a refrigerant system (i.e. Freon) with a compressor to circulate the refrigerant, a desert cooler uses evaporation of water to remove heat.  With a low relative humidity, water can evaporate quite rapidly, taking a lot of heat energy along with it.  \n\nThere are a variety of different techniques to exchange and remove heat from the air.  One that is used in less arid climates is called a swamp cooler, in which water is pumped from a pond, through a heat exchanger and then back through a fountain in the pond.  The fountain aids in the evaporative process, helping to keep water cooler.  \n\nWhile a desert cooling system may not be able to develop as cold of temperatures as a refrigerant-based system, it still can effectively reduce the air temperature, and do so using less electricity since a compressor is not required to run.
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Because of all the water that gathers on the tray that supports the a/c mechanism. As air is cooled, water condenses from the air and drips down to the bottom where it gathers. Microbes that like cool moist environments will grow there. These microbes can then be introduced into the air and blown into the room.
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Evaporation is a natural cooling process for the human body.  As something on the skin evaporates, it draws the heat away from that site.  The faster something evaporates, the more heat it draws away, and the greater the sensation of being cold.  And alcohol evaporates very fast even at normal temperatures, therefor, it removes large amounts of heat.
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Certainly.  RH is the amount of water vapor in the air divided by the maximum amount possible (before condensation occurs) given the temperature.  The maximum possible increases with increasing temperature, so if you heat air in a closed container the RH decreases, and if you cool it enough the RH increases until reaching 100%, when condensation begins.
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A parcel of unsaturated air that rises in the atmosphere will cool by 1C per 100 m.\n\nSo if your parcel is 30C at the surface, it will be 20C at 1000 m.  However, if the water vapor in the air condenses before it has reached 1000 m, the answer would be different (and the answer would depend on the humidity of the air).
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On body regulates it's heat through persperation.  It's not as much the temperature that makes it feel hot as the humidity.  The higher the humidity the less moisture evaporated from the skin thus reducing the cooling effect.
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The air's ability to hold water is a factor of temperature.  That's why humidity is referred to as "Relative Humidity" (its relative to the temperature).  So as the air cools at night, it has less ability to hold water.  What may have been 60% humidity during the day, may end up causing rain during the night.
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No, an air conditioner will cool the room.  An air conditioner de-humidifies by passing moist warm air through a cold surface.  Water condenses and drips out.  The warm air is also cooled and sent back into the room.  The only way the air can be de-humidified is by being cooled.\n\nIf you're lucky to live in an area where you need to de-humidify in the winter, why not just buy a dehumidifier.  It will actually heat a room.