What is “wet bulb temperature” and why does it matter?
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Lots of good answers already, but I thought I’d share some info on “wet bulb”
~30 years ago, it was common for classrooms to have one of these on the wall:
https://www.instrumentchoice.com.au/Labelled%20Sling%20Psychrometer.jpg
The wick was kept supplied with water. Students would record both values, and you could look up an XY table, and the crossing point shows the relative humidity of those two temperatures.
In general, the further apart those two temps (dry vs wet), the lower the humidity.
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