Boyle's Law |

Boyle's Law, proposed by Robert Boyle in 1662, states that for a closed isothermal (constant temperature) system, the product of the pressure ( Equivalently, the product at two different states must be the same, |

McLeod Gages |

Suppose that initial pressure and volume in a McLeod Gage are given by,
P_{1} = P_{i}
where Suppose that the final compressed pressure and volume are given by, P_{2} = P_{gage}
According to Boyle's law, we have, For a typical manometer, . The unknown pressure h,
Furthermore, the volume of the reservoir is usually much larger than the tube, V » A·(h_{0}-h)This allows us to drop the area term, resulting in a simple quadratic function for the pressure, |