Title basically. Why is a tire with no air at 0 psi if atmospheric pressure is at 14.7. Donee just not count that and the psi gauges compensate for it? Or is something else going on?
In: Mathematics
That’s a relative pressure. 0 psi just means there’s 0 pressure difference inside vs outside of the ball.
If we were to put the ball in a vacuum chamber and remove all the air, we would measure 14.7 psi inside the ball and it would appear to inflate
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