...
| Wiki Markup |
|---|
_Gravitational Mass_, which appears in the Law of [Gravitationgravitation (universal)], has been shown to be proportional to _Inertial Mass_ to better than one part per trillion. \[See Eotvos experiment, http://en.wikipedia.org/wiki/E%C3%B6tv%C3%B6s_experiment, much more accurately performed at the University of Washington - _Physical Review Letters 100, 041101 (2008)_.\] This equality is assumed by the _Principle of Equivalence_ and is a cornerstone of Einstein's theory of _General Relativity_. This theory indicates that all forms of energy have mass via the relationship E=mc2. |
...