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The definition tag is used in situations where the question is either about how some term or concept is defined or where the validity of an answer depends on a subtle definition of some term or concept used in the question.

1 vote
3 answers
182 views

A reversible transformation, but there is finite temperature heat transfer?

$dS =\delta Q_{rev} /T$ is the thermodynamic definition of entropy. …
SimoBartz's user avatar
  • 1,978
1 vote
0 answers
206 views

What are normal modes?

In normal modes analysis the differential equations of the system are Fourier transformed and the Fourier monochromatics are found. I think these monochromatics are usually called normal modes of the …
SimoBartz's user avatar
  • 1,978
3 votes
2 answers
2k views

In which sense equations of motion are covariant?

On the other hand there are some equations that are said to be covariant but doesn't respect this definition. …
SimoBartz's user avatar
  • 1,978