A new series of experiments is described, involving two gravitational wave detectors spaced about 2 km. A number of coincident events have been observed, with extremely small probability that they are statistical. It is clear that on rare occasions these instruments respond to a common external excitation which may be gravitational radiation.
- Received 4 April 1968
- Published in the issue dated 3 June 1968
© 1968 The American Physical Society