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Physics
Under Pressure
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Fluid pressure
What to observe
Turn the atmosphere off to isolate pressure from the fluid column. The pointed tip is the sensing location; a probe inside a wall has no reading.
Using the tools
Drag the gauge or pointed tip to measure. Arrow keys move, Page Up/Down move further; Home/End move up/down.
Drag a faucet handle to open it; release to close. Tap to dispense or drain a small amount.
Model notes
- The fluid is uniform and incompressible; turbulence and viscosity are not modeled.
- Air pressure varies linearly over a small height range and scales with gravity.
- The loaded chamber uses a width ratio and illustrative damping, not a full fluid-dynamics solver.
- The gauge range adapts to atmosphere, density and gravity; read the precise value in the numeric display.