Relative humidity seems to be a tough concept for my freshman to wrap their brains around, so I produced a "pencast" that they can use to reinforce my classroom explanation.
CLICK HERE to watch and listen to the 10-minute presentation titled "Relative Humidity I". Make sure your volume is on, select full screen, and then "Hide Preview" (lower right). When finished, you can print a copy of the notes. Select "Download as PDF". In the sequel, titled
Relative Humidity II I explain dry indoor air (winter), psychrometers, and the heat index. I made the pencasts with a Livescribe "Echo" (smart pen). They are great for students who missed class or need a concept explained a second time. Cartoon courtesy of Phillip Martin.
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