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Shapiro Effect

  1. Sep 10, 2009 #1
    Here is an excerpt from Wikipedia

    The Shapiro time delay effect, or gravitational time delay effect, is one of the four classic solar system tests of general relativity. Radar signals passing near a massive object take slightly longer to travel to a target and longer to return (as measured by the observer) than it would if the mass of the object were not present

    Disregarding GR predictions for a moment, how would you experimentally verify whether the delay was contributed by both the travel to and the return or solely by the return run?
  2. jcsd
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