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Let us examine how a manometer is used to measure pressure. The difference in the height of the two columns is due to the fact that p1 is greater than p2. Materials and Specifications A manometer with only one side open to the atmosphere is an ideal device for measuring gauge pressures. Which of the following correctly relates the pressure of the The pressure in the left limb is due to (a) the column of measuring fluid (e.g. University Physics I - Mechanics, Sound, Oscillations, and Waves (OpenStax), { "14.01:_Prelude_to_Fluid_Mechanics" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14.02:_Fluids_Density_and_Pressure_(Part_1)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14.03:_Fluids_Density_and_Pressure_(Part_2)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14.04:_Measuring_Pressure" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14.05:_Pascal\'s_Principle_and_Hydraulics" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14.06:_Archimedes_Principle_and_Buoyancy" : 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https://phys.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fphys.libretexts.org%2FBookshelves%2FUniversity_Physics%2FBook%253A_University_Physics_(OpenStax)%2FBook%253A_University_Physics_I_-_Mechanics_Sound_Oscillations_and_Waves_(OpenStax)%2F14%253A_Fluid_Mechanics%2F14.04%253A_Measuring_Pressure, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), Example \(\PageIndex{1}\): Fluid Heights in an Open U-Tube, 14.3: Fluids, Density, and Pressure (Part 2), source@https://openstax.org/details/books/university-physics-volume-1, English unit: pounds per square inch ( lb/in.2 or psi), $$\begin{split} 1\; atm & = 760\; mm\; Hg \\ & = 1.013 \times 10^{5}\; Pa \\ & = 14.7\; psi \\ & = 29.9\; inches\; of\; Hg \\ & = 1013\; mb \end{split}$$, Define gauge pressure and absolute pressure, Explain various methods for measuring pressure, Understand the working of open-tube barometers, Describe in detail how manometers and barometers operate.