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A researcher identified with James G. Williams and Slava G. Turyshev on their 2012 lunar laser ranging study. Their analysis tests the equivalence principle by fitting precise Earth–Moon distance measurements to a model of the lunar orbit and checking whether different analysis choices change the inferred result.^[ref]

By James G. Williams, Slava G. Turyshev, Dale Boggs.

Publication information: arxiv.org/abs/1203.2150

Published in Classical and Quantum Gravity.

Online text: arxiv.org/pdf/1203.2150

Cited passages: §§2–3, pp. 3–6: pulse timing, normal points, model and figure 1; §4, pp. 7–8: consistency checks and radiation/thermal effects.

A physicist working on experimental tests of gravity. His joint work with James G. Williams and Dale Boggs uses lunar laser ranging to compare the ratios of gravitational mass to inertial mass for Earth and the Moon. The comparison probes the equivalence principle using bodies with different compositions and gravitational binding energies.^[ref]