A Newtonian inertial frame is one where objects obey Newton's first law.(adsbygoogle = window.adsbygoogle || []).push({});

Schutz (A first course in general relativity) says an inertial frame cannot be constructed in a gravitational field because it's then impossible to synchronize the frame's clocks? For the same reason an inertial frame cannot be accelerating.

Wikepedia defines an inertial frame as one "that describes time homogeneously and space homogeneously, isotropically, and in a time-independent manner."

I'm getting very confused about all these, undoubtedly correct, descriptions of inertial frames. Which are the chickens and which are the eggs?

Can anyone explain, simply, (1) what's the difference and (2) why there needs to be a difference between a Newtonian inertial frame and an inertial frame in special relativity.

Thank you

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# Why so many definitions of an inertial frame?

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