A Repetition of the Trouton-Noble Ether Drift Experiment
Carl T. Chase · Physical Review · 1926
Experimental reasons are given showing that previous failures of this experiment to detect motion of the earth in the ether have not been conclusive. The experiment has been repeated with apparatus free from the sources of error described and sufficiently sensitive to detect a motion in the ether of 4 km/sec. No such motion was found.