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→verification of time dilation: acceleration of gravity was measured to a precision of 7 parts per billion
At the end of the "Time Dilation" sub-section, I propose adding the following paragraph:
At the end of the "Time Dilation" sub-section, I propose adding the following paragraph:
Since the 1960’s, the time-shifting effects predicted by general relativity have been tested by comparing clocks placed at different elevations in the earth’s gravitation field. The most recent measurements indicate that gravity’s effect on time is predictable to 7 parts per billion.<ref> 1 </ref> In this work, Holger Mueller and colleagues shot cesium atoms in an arc through a vacuum chamber. Using a laser they were able to bump some of the atoms to a slightly higher path. Then, they measured a small, but significant phase difference between the atoms in the two different arcs. These measurements provide strong support for Einstein’s theory of general relativity.
Since the 1960’s, the time-shifting effects predicted by general relativity have been tested by comparing clocks placed at different elevations in the earth’s gravitation field. The most recent measurements indicate that gravity’s effect on time is predictable to 7 parts per billion.<ref> 1 </ref> In this work, Holger Mueller and colleagues shot cesium atoms in an arc through a vacuum chamber. Using a laser they were able to bump some of the atoms to a slightly higher path. Then, they measured a small, but significant phase difference between the atoms in the two different arcs. These measurements provide strong support for Einstein’s theory of general relativity.
: It appears to me that you have misstated the result. Your wording is similar to the news story here [http://www.nature.com/news/2010/170210/full/463862a.html], but the actual article here [http://www.nature.com/nature/journal/v400/n6747/full/400849a0.html] says that the acceleration of gravity was measured to a precision of 7 parts per billion. [[User:RSchlafly|RSchlafly]] 12:34, 6 May 2010 (EDT)
==References==
==References==