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Wind Speed and Wind Pressure
The Golden Gate is a very breezy place, the only gap in the coast range for hundreds of miles. Cool, dense, high pressure air over the cold ocean pushes its way into the Bay and California’s interior, while the land heats up and the air over it becomes warmer, less dense, and lower in pressure. This exhibit allows the visitor to feel how much harder it is to push with a force equivalent to a wind of various speeds.
When wind pressure pushes on the Golden Gate Bridge, the Bridge must push back with enough force to stand up and remain stable.
When the wind blows twice as fast, the pressure is not twice as great - it is four times as great.
Wind pressure, in this case the wind force spread over 1 square foot (1/10 meter square), increases as the square of the wind speed.
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