re: Omaha Humidity Thickness

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The reason has to do with the weight of gaseous molecules in the air. As air becomes more humid, it holds more water molecules. That gaseous water vapor is really light, and it displaces heavier gases like nitrogen and oxygen.

By kicking out those heavy gases, the air density goes down. Air density is a measure of molecules in a given amount of space. If air has higher density, it’s harder for the ball to go through it. There’s more drag.

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