First and second order terms in pressure measurement

[can12345]

Hello everyone,
What does it means first and second order of pressure measurement value? Whats the main difference?

 

[berkeman]

Hello everyone,
What does it means first and second order of pressure measurement value? Whats the main difference?

Why don't you tell us what you think first? What have you read so far to try to figure this out? What is the context of the question? Is this for schoolwork?

 

[can12345]

They are all mixed there ;) maybe try to open an homework page only for mechanical engineering ;)

 

[berkeman]

They are all mixed there ;) maybe try to open an homework page only for mechanical engineering ;)

Say which what? What does that have to do with your question in Post #1 above?