Dry bulb temperature - The actual air temperature as measured by a sling psychrometer.
Dry bulb temperature
The shade temperature (degrees Celsius) registered by a mercury-in-glass thermometer exposed in a white louvered box called a "Stevenson Screen" which is raised on legs one metre above the ground.
Dry line ...
Picture of a "Sling Psychrometer" used to measure the wet and dry bulb temperature for determining the relative humidity.
"Relative Humidity"
What is Relative Humidity and how do we obtain it?
Delta T is calculated by subtracting the wet bulb temperature from the dry bulb temperature. When applying pesticides, Delta T should ideally be between 2 and 8, and not greater than 10.
Since evaporation requires heat, the thermometer will cool to a lower temperature than a thermometer with a dry bulb at the same time and place. Wet bulb temperatures can be used along with the dry bulb temperature to calculate dew point or relative ...
 See also: Humidity, Temperature, Weather, Meteor, Water
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