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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 than they would if the mass of the object were not present. The time delay is caused by time dilation ...
Meyer Schapiro (23 September 1904 – 3 March 1996) was a Lithuanian-born American art historian known for developing new art historical methodologies that incorporated an interdisciplinary approach to the study of works of art. An expert on early Christian, Medieval, and Modern art, Schapiro explored art historical periods and movements with a ...