Sweaty Cups: Why Condensation Forms
, by Kims Korner, 1 min reading time
To avoid a watered down beverage and a messy wet cup, throw on a cup sleeve & voila! Problem solved. In addition to keeping the mess at bay, your ice won't melt nearly as quick, so your drink won't get watered down. win win
Have you ever poured a cold drink into a cup on a hot day, only to find beads of water forming on the outside of the cup? This phenomenon, known as condensation, is a common occurrence that many of us have experienced.
To avoid a watered down beverage and a messy wet cup, throw on a cup sleeve & voila! Problem solved. In addition to keeping the mess at bay, your ice won't melt nearly as quick, so your drink won't get watered down. win win
Have you ever wondered why this happens?
Condensation on the outside of a cup occurs when the air around the cup is cooler than the temperature of the drink inside. When you pour a cold beverage into a glass, the cold temperature of the drink causes the air around the cup to cool down as well. As the air cools, it loses its ability to hold moisture, leading to the water vapor in the air condensing into liquid water on the surface of the cup.
This process is similar to how dew forms on grass in the early morning or how fog appears on a bathroom mirror after a hot shower. The difference in temperature between the cold drink and the warm air causes water vapor in the air to change from a gaseous state to a liquid state, resulting in the formation of water droplets on the outside of the cup.
So, the next time you see your cup sweating on a hot day, remember that it's simply a result of the science of condensation at work. It's a fascinating reminder of the way in which temperature and humidity interact to create the world around us.
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