Ilja, you must agree with my scenario then. Is your answer true or false?<div><br></div><div>Tom.<br>
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----Original Message----<br>From: ilja.schmelzer@googlemail.com<br>Date: 05/11/2016 18:00<br>To: <physics@tuks.nl><br>Subj: [Physics] About the equivalence principle<br><br>> When watching a piece of lead and a piece of wood fall, they appear to fall in<br>> exactly the same manner. They do not. The lead actually falls faster, but the<br>> difference in acceleration is so minute that it cannot easily be measured, and<br>> can be ignored for all practical purposes.<br><br>Fine. But this is not an error in GR. Because it is well-known that<br>in the usual formulation you have used the Equivalence Principle is<br>only an approximation. It applies only as far as the Earth can be<br>approximated by a constant gravitational field. And, as well, only as<br>far as this field is not disturbed by the test particles considered.<br>So, if you have a mass of the size of the Earth, it attracts the Earth<br>itself too and distorts the issue.<br><br>_______________________________________________<br>Physics mailing list<br>Physics@tuks.nl<br>http://mail.tuks.nl/cgi-bin/mailman/listinfo/physics<br><br><br>
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