The search for gravity waves began in earnest in the early 1960’s. American scientist Joseph Weber built two gravity waves antennas consisting of large cylinders of pure aluminum. To these he attached highly sensitive vibration detectors; he hoped they would register any gravity waves passing through the antennas. In 1969 Weber announced that he was recording one gravity wave daily. But other researchers were unable to confirm or duplicate his results. Nevertheless, the Weber method is still applied in the search for gravity waves today.