Related Experiment Video
Updated: Mar 10, 2026
09:49
Measurement of the Pressure-volume Curve in Mouse Lungs
Published on: January 27, 2015
19.6K
Measuring pressure
1Marketing director, Support Systems International, Charleston, South Carolina, USA.
Journal of Wound Care
|December 7, 2016
Summary
This guide explains pressure measurement units and types. Understanding pressure is crucial in various scientific and engineering applications.
Area of Science:
- Physics
- Engineering
- Metrology
Background:
- Pressure is a fundamental physical quantity.
- Accurate measurement and understanding of pressure are vital across numerous disciplines.
- Various units and classifications exist for pressure, which can cause confusion.
Purpose of the Study:
- To provide a comprehensive overview of pressure units.
- To clarify the different types of pressure measurements.
- To serve as a foundational resource for those working with pressure data.
Main Methods:
- Literature review of established metrology standards.
- Compilation and explanation of common pressure units (e.g., Pascal, psi, bar).
- Categorization of pressure types (e.g., absolute, gauge, differential).
Main Results:
- Detailed definitions and conversions for key pressure units.
- Clear distinctions between absolute, gauge, and differential pressure.
- Identification of common applications for each pressure type.
Conclusions:
- Standardized understanding of pressure units enhances data consistency.
- Knowledge of pressure types allows for appropriate measurement selection.
- This guide facilitates accurate communication and application of pressure principles.
Related Concept Videos
01:16Measurement of Fluid Pressure
1.4K
Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
1.4K
02:57Definition and Measurement of Pressure: Atmospheric Pressure, Barometer, and Manometer
44.7K
Gas pressure is caused by force exerted by gas molecules colliding with the surfaces of objects. Although the force of each collision is very small, any surface of an appreciable area experiences a large number of collisions in a short time, which can result in high pressure.
44.7K
01:20Pressure Gauges
6.0K
Most pressure gauges, like those on scuba tanks, are calibrated to read zero at atmospheric pressure. Readings from such gauges are called the gauge pressure, which is the pressure relative to atmospheric pressure. When the pressure inside the tank exceeds atmospheric pressure, the gauge reports a positive value. Some gauges are designed to measure negative pressure. For example, many physics experiments must take place in a vacuum chamber, a rigid chamber from which some of the air is pumped...
6.0K
01:17Measurement of Blood Pressure
3.7K
Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
3.7K
01:11Pressure Variation in a Fluid at Rest
940
In a fluid at rest, the pressure at any point beneath the fluid surface depends solely on the depth, not on the container's shape or size. This principle, known as hydrostatic pressure, arises because, in stationary fluids, there is no acceleration, meaning the forces within the fluid balance out. Only vertical forces, caused by the weight of the fluid above, contribute to pressure changes with depth.
When measuring pressure at two different levels within the fluid, the difference in...
When measuring pressure at two different levels within the fluid, the difference in...
940
01:14Pressure of Fluids
22.4K
There are many examples of pressure in fluids in everyday life, such as in relation to blood (high or low blood pressure) and in relation to weather (high- and low-pressure weather systems). A given force can have a significantly different effect, depending on the area over which the force is exerted. For instance, a force applied to an area of 1 mm2 has a pressure that is 100 times greater than the same force applied to an area of 1 cm2. That's why a sharp needle is able to poke through...
22.4K