 Trouton–Rankine experiment

The Trouton-Rankine experiment is a physics experiment that was designed to test the theory of electromagnetism and the rigidity of materials, specifically within the context of the ether theory that was prevalent before the advent of Einstein's theory of relativity. Conducted by Frederick Trouton and his assistant John A. Rankine in the early 20th century, the experiment aimed to measure the torque exerted on a charged, rotating disk in an electric field.