Convert Technical atmosphere to Pressure Barye

The Technical Atmosphere (symbol: at) is a unit of pressure that is not part of the International System of Units (SI) but is still used in some contexts, particularly in engineering. It represents the pressure exerted by a 1-kilogram force over an area of 1 square centimeter.

1. Defined Value:

   • 1 technical atmosphere (at) is defined as 98,066.5 pascals (Pa), which is equivalent to 98.0665 kilopascals (kPa) or approximately 0.9678 Standard Atmospheres (atm).

2. Basis of Definition:

   • The technical atmosphere is based on the idea of the force exerted by gravity on a mass of 1 kilogram over a specific area. Specifically, it considers a standard gravitational acceleration of 9.80665 meters per second squared (m/s²).

3. Usage:

   • The technical atmosphere is sometimes used in engineering fields, particularly in Europe, for expressing pressures in contexts like hydraulics, pneumatics, and other areas involving mechanical forces.
   • Although less common today, it might still be encountered in older documents, manuals, or in industries where legacy systems or traditional units are in use.

4. Comparison with Other Units:

   • The technical atmosphere is slightly less than the Pressure Standard Atmosphere (1 atm), which is 101,325 pascals. This means that 1 at is about 96.78% of 1 atm.
   • It’s important to note the distinction between the technical atmosphere and the standard atmosphere, as they represent slightly different pressure values.

5. Historical Context:

   • The technical atmosphere was more commonly used before the widespread adoption of the SI unit system, which uses the pascal (Pa) as the standard unit for pressure. As such, its use has declined in favor of SI units, but it remains relevant in certain specialized contexts.

In summary, the Technical Atmosphere (at) is a unit of pressure defined as the pressure exerted by a 1-kilogram force over an area of 1 square centimeter. Although not an SI unit, it has been used historically in engineering and is still encountered in some specialized applications.

Pressure Barye is a unit of measurement used to quantify pressure in the centimeter-gram-second (CGS) system of units.

Pressure is the amount of force applied over a specific area. Imagine pushing on a surface with your hand; the harder you push, the more pressure you're applying. The concept of pressure is crucial in many fields, like physics, engineering, and meteorology, as it helps us understand how forces are distributed in different situations, such as in fluids or gases.

Barye (Ba) is a specific unit for measuring pressure within the CGS system. It is defined as the pressure exerted when a force of one dyne is applied to an area of one square centimeter. Here's a breakdown:

• Dyne: A dyne is a very small unit of force in the CGS system. It is the force needed to accelerate a mass of one gram by one centimeter per second squared.
• Square Centimeter: This is a unit of area equal to the area of a square with sides that are each one centimeter long.

So, when you apply a force of one dyne over an area of one square centimeter, you create a pressure of one barye.

To put it into perspective, one barye is a very small amount of pressure. In the more commonly used International System of Units (SI), one barye is equal to 0.1 pascals (Pa). A pascal is the SI unit of pressure, where one pascal equals one newton of force per square meter.

In summary, Pressure Barye is a way of measuring how much force is being applied per unit area, specifically using the CGS system, where one barye is the pressure produced by one dyne of force over one square centimeter.