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Guru
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Einstein Tested to 0.05% Accuracy

09/14/2006 8:45 AM

By analyzing the data from the only dual pulsar discovered so far, scientists from the Particle Physics & Astronomy Research Council have confirmed Einstein's theory of general relativity to an incredible 0.05% level.

Says a EurekAlert article: "Though all the independent tests available in the double pulsar system agree with Einstein's theory, the one that gives the most precise result is the time delay, known as the Shapiro Delay, which the signals suffer as they pass through the curved space-time surrounding the two neutron stars. It is close to 90 millionths of a second and the ratio of the observed and predicted values is 1.0001 +/- 0.0005 - a precision of 0.05%."

If you want a better idea of what this Shapiro Delay is all about, have a look at Tests of Relativity.

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