MadSci Network: Physics

Subject: Followup to 1210359712.Ph,Re freefalling frames as inertial

Date: Sun May 18 11:18:33 2008
Posted by Ray
Grade level: grad (non-science) School: No school entered.
City: Largo State/Province: FL Country: USA
Area of science: Physics
ID: 1211134713.Ph

Thanks to Jim Guinn for timely informative 
answer to 1210359712.Ph ! Please, an additional 
clarification re "free falling frames" 
qualifying as "inertial ref frames" for SR 
purpose & deeming the laws of Physics same in 
all inertial frames.

We say SR holds on Earth because Earth is in 
free fall (around sun) & "a free falling frame 
is inertial."

It would seem that the Int'l Space Station is 
similarly in free fall (around Earth) & can be 
considered an inertial frame.

However,an Earth born person & an ISS born 
person-each dropping a ball-will witness 
different results, that might_appear_to 
indicate "different" laws of physics at work.

Please expound on the 2 free falling inertial 
frames (Earth & ISS) & how to tell the laws of 
physics are the same although they may appear 
different in a particular isolated frame.

Thanks again to all for your time!

Re: Followup to 1210359712.Ph,Re freefalling frames as inertial

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