View source for Einstein?s Requirement for Weak Gravity versus Einstein?s Covariance Principle

{{Infobox paper
| title = Einstein?s Requirement for Weak Gravity versus Einstein?s Covariance Principle
| author = [[Chung Y Lo]]
| keywords = [[Weak Gravity]], [[Covariance Principle]]
| published = 2008
| journal = [[None]]
}}

==Abstract==

Due to Einstein?s ?covariance principle?, Einstein?s requirement for weak gravity has not been universally accepted although many believe in both his requirement and principle. For example, <span lang="EN-GB">Bondi, Pirani, &amp; Robinson rejected </span>Einstein?s requirement since they <span lang="EN-GB">considered</span> their unbounded metric <span lang="EN-GB">as a weak wave. However,</span> validity of this ?wave? actually has not been established since the related metric for no gravity clearly violates the principle of causality. Some theorists rejected Einstein?s requirement for being coordinate-dependent because they do not understand that it is based on the principle of causality. However, based on Einstein?s equivalence principle and related Einstein-Minkowski condition, such a coordinate-dependence is solved. Validity of this principle and condition are illustrated with the metric of Einstein?s rotating disk. Concurrently, Einstein?s requirement is proven valid. Moreover, invalidity of Einstein?s ?covariance principle? is illustrated with a counter example.

[[Category:Scientific Paper|einstein s requirement weak gravity versus einstein s covariance principle]]

[[Category:Gravity|einstein s requirement weak gravity versus einstein s covariance principle]]