What is the dewpoint temperature?

What is the dewpoint temperature?

What is the dewpoint temperature? Dew on evergreens, by Michael Theberge at NOAA Think of a morning when you walked on a grass lawn or through a field. Did your shoes get wet? If yes, that is because the grass… More »

Where does the dew on blades of grass come from?

Where does the dew on blades of grass come from?

Where does the dew on blades of grass come from? As fall begins, we have lots of mornings with dew on the grass. To explain this, we start with the fact that air contains water in the gas phase, called… More »

What makes it feel “muggy”?

What makes it feel "muggy”?

Summer days are referred to as “muggy” when they are very warm and humid. The word “muggy” is believed to come from the Middle English “mugen” which means drizzle. It may also arise from the fact that on such a day, a cold mug becomes covered with a film of liquid water when exposed to humid air.
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