What is the dew point?
What happens if the temperature drops below the dew point?
Why do eyeglasses collect moisture when going from cold outside air into a warm room?
How is the dew point determined?
Condensation occurs when the temperature rises above the dew point.
People wearing eyeglasses may experience moisture collecting on their glasses when moving from a warm room to cold outside air.
The dew point is the temperature at which air becomes saturated.
The principle of determining the dew point involves cooling a vessel until water vapor begins to condense on its surface.
Test your knowledge of dew point and condensation with this quick quiz. See if you can identify the temperature at which condensation occurs and understand why your glasses fog up when you enter a warm room from the cold outdoors.
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