FTP, name the scientist who, along with D.C. Miller, helped to develop the interferometer and, thereby, disprove the existence of the luminiferous ether in an eponymous experiment with A.A. Michelson.
Though this man already had a less famous gig as a professor of medicine at Cleveland Medical College, he also became a Congregationalist minister late in his career.  During the 1870s, he made the first accurate measurements of the stoichiometry of the reaction of hydrogen and oxygen and, after building an eudiometer to measure the amount of oxygen in air, he showed that, under certain conditions, cold air results from downward movement of air. FTP, name the scientist who, along with D.C. Miller, helped to develop the interferometer and, thereby, disprove the existence of the luminiferous ether in an eponymous experiment with A.A. Michelson.
Though this man already had a less famous gig as a professor of medicine at Cleveland Medical College, he also became a Congregationalist minister late in his career.  
Edward Williams Morley