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A hygrometer is an instrument which measures the humidity of air or some other gas: that is, how much water vapor it contains. [ 1 ] Humidity measurement instruments usually rely on measurements of some other quantities such as temperature, pressure, mass, and mechanical or electrical changes in a substance as moisture is absorbed.
Humidity measurement is one of the more challenging technical problems in basic physics, mainly because small microclimate variations from place to place make it nearly impossible to maintain a consistent RH throughout the environmental chamber used for calibrating the devices. Two thermometers can be compared by immersing them in an insulated ...
Thermo-hygrograph. A thermo-hygrograph or hygrothermograph is a chart recorder that measures and records both temperature and humidity (or dew point). Similar devices that record only one parameter are a thermograph for temperature and hygrograph for humidity. Thermographs where the variations are recorded using photography were described by ...
According to the CDC, other techniques that may help reduce the symptoms of motion sickness include: Staying hydrated and limiting caffeine and alcohol. Avoiding smoking. Getting enough sleep ...
A bimetallic coil from a thermostat reacts to the heat from a lighter, by uncoiling and then coiling back up when the lighter is removed. A bimetallic strip or bimetal strip is a strip that consists of two strips of different metals which expand at different rates as they are heated. They are used to convert a temperature change into mechanical ...
Ashton Jeanty ran for 259 yards and four touchdowns, Matt Lauter had four catches for 96 yards and two scores and No. 25 Boise State surged past Washington State 45-24 on Saturday night. Playing ...
Just look at the Daily Hiss Crew! This is a group of raccoons and cats from Maine who all found a friend (and chef) in one generous resident. She feeds them all from the comfort of her porch, and ...
The wet-bulb temperature is the lowest temperature that may be achieved by evaporative cooling of a water-wetted, ventilated surface.. By contrast, the dew point is the temperature to which the ambient air must be cooled to reach 100% relative humidity assuming there is no further evaporation into the air; it is the temperature where condensation (dew) and clouds would form.