What does absolute mean in physics?

[Antonio Lao]

In physics, when we say that something is absolute does this means that the something is perfect? Something is total? Something is a quantum? Something is a constant? Something is unchanging? Something is motionless? Something is eternal?

 

[jcsd]

When something is said to be absolute it usually means it remains the same under transformation.

 

[Antonio Lao]

jcsd,

I know of three basic transformations: translation, rotation and scaling. Do you mean all of these and some more that I don't know about?

 

[baffledMatt]

I'm not sure if 'absolute' means much without defining it in the current context. For instance, does "absolute temperature" relate in any way to "absolute value"?

Matt

 

[WWW]

I think that Symmetry is the main concept that is related to your questions.

If we want to get some useful information out of our explored system, we also need some invariant system (some law) which is related to the measured system.

But, in my opinion, any research must include also our own abilities to research as a legal part of any research.

 

[ahrkron]

I'm with baffledMatt. I think the concept of "absolute" needs a context to be properly understood. Absolute space and absolute time are other two examples that have little to do with "absolute temperature" and "absolute value".

 

[geistkiesel]

When something is said to be absolute it usually means it remains the same under transformation.

Your statement is clear enough , but does it include perturbations to the "absolute" during transformation yet completing the transformaion in an invariant state?

Thanks.