1
$\begingroup$

Soft question here, but I was wondering just what exactly free parameters are? I have a murky understanding on the concept but I would much appreciate someone shedding some light on the matter. Is Newton's gravitational constant $G$ a free parameter of that theory? What exactly are the requirements for a parameter to be considered a free parameter?

$\endgroup$
3
$\begingroup$

Free parameters are not predefined but must be estimated by theory or experimentally. Or it can be a parameter used in fitting a dataset with an expression. The free parameters are varied to get a good fit to the data.

G in Newton's gravitational equation is a free parameter and has been measured but not with high accuracy.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.