What is absolute pressure?
Understand the Problem
The question is asking for the concept or definition of absolute pressure, which is a fundamental concept in physics and engineering relating to the pressure of a fluid measured relative to a perfect vacuum.
Answer
Pressure measured relative to a perfect vacuum.
Absolute pressure is the pressure measured relative to a perfect vacuum, using absolute zero pressure as the reference point.
Answer for screen readers
Absolute pressure is the pressure measured relative to a perfect vacuum, using absolute zero pressure as the reference point.
More Information
Absolute pressure readings provide a true measure independent of atmospheric conditions, which is crucial for processes that operate under varying conditions.
Tips
A common mistake is confusing absolute pressure with gauge pressure, which incorporates atmospheric pressure as a reference.
Sources
- What is absolute pressure? - Setra Systems - setra.com
- Gauge pressure & absolute pressure: Differences - WIKA blog - blog.wika.com
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