The 1903 Trouton–Noble (TN) experiment, which sought a torque on a charged capacitor, is often regarded as the electrostatic equivalent of the Michelson–Morley experiment, inasmuch as it was supposed to have detected ether drift, and it yielded a null result. The present experiment was designed to be the electrostatic equivalent of the Michelson–Gale experiment, which was performed to detect the rotational velocity of the earth and which yielded a nonnull result. The present experiment is 105times as sensitive as the original TN experiment, but yields a null result nonetheless. Although the TN experiment is often regarded as crucial, a footnote in the original paper reveals the conjectural nature of the theory.